JPH05124122A - Adsorbing fiber - Google Patents

Adsorbing fiber

Info

Publication number
JPH05124122A
JPH05124122A JP3286717A JP28671791A JPH05124122A JP H05124122 A JPH05124122 A JP H05124122A JP 3286717 A JP3286717 A JP 3286717A JP 28671791 A JP28671791 A JP 28671791A JP H05124122 A JPH05124122 A JP H05124122A
Authority
JP
Japan
Prior art keywords
fiber
paraffin wax
fibers
polyolefin resin
polypropylene
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP3286717A
Other languages
Japanese (ja)
Other versions
JP3246755B2 (en
Inventor
Isamu Takahashi
勇 高橋
Shigeki Hayashi
茂樹 林
Yoshio Iida
祥夫 飯田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ube Exsymo Co Ltd
Original Assignee
Ube Nitto Kasei Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ube Nitto Kasei Co Ltd filed Critical Ube Nitto Kasei Co Ltd
Priority to JP28671791A priority Critical patent/JP3246755B2/en
Priority to EP19920900894 priority patent/EP0565720A4/en
Priority to PCT/JP1991/001690 priority patent/WO1993009277A1/en
Priority to US07/852,259 priority patent/US5480712A/en
Publication of JPH05124122A publication Critical patent/JPH05124122A/en
Application granted granted Critical
Publication of JP3246755B2 publication Critical patent/JP3246755B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Molding Of Porous Articles (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Artificial Filaments (AREA)

Abstract

PURPOSE:To provide porous adsorbing fibers, which can easily be machined by a normal textile machine and can adsorb a large quantity of substances to be adsorbed rapidly. CONSTITUTION:Porous fibers adsorbing and removing substances dispersed or dissolved in a liquid are used as adsorbing fibers, and the fibers are composed of a fiber body consisting of a polyolefin resin and a large number of pores. The pores are formed in such a manner that the polyolefin resin and paraffin wax are mixed, melt-spun, oriented and thermally treated, and paraffin wax is removed. Polyethylene and polypropylene are preferable as the polyolefin resin, and high-density polyethylene having a melt index of 0.3-20g/ten min is favorable on polyethylene and polypropylene having density of approximately 0.90 or more and a melt flow rate value within a range of 0.5-9.0g/ten min on polypropylene.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、液体中に分散ないしは
溶存されている物質を吸着除去する繊維に関するもので
ある。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fiber for adsorbing and removing a substance dispersed or dissolved in a liquid.

【0002】[0002]

【従来の技術】近年、世界規模での地球環境の保全の必
要性が注目を集めている。環境保全の必要性は、大気だ
けでなく水質においても重要な課題であり、水質汚濁防
止に関する廃水処理も重視されている。このような観点
から、従来より、廃水中に含まれている染料や界面活性
剤の除去が行われている。このような廃水処理技術とし
ては、凝集沈殿処理法や活性汚泥処理法が良く知られて
いる。また、特開昭58−219940号公報には、中
空多孔質繊維を利用した吸着材が開示されている。しか
しながら、これらの廃水処理法および吸着材には、以下
に説明する技術的課題が指摘されていた。
2. Description of the Related Art In recent years, the need for global environmental protection has been attracting attention. The necessity of environmental protection is an important issue not only in the atmosphere but also in water quality, and wastewater treatment for water pollution prevention is also emphasized. From such a point of view, conventionally, dyes and surfactants contained in wastewater have been removed. As such a wastewater treatment technique, a coagulation sedimentation treatment method and an activated sludge treatment method are well known. Further, Japanese Patent Application Laid-Open No. 58-2193940 discloses an adsorbent using hollow porous fibers. However, the technical problems described below have been pointed out in these wastewater treatment methods and adsorbents.

【0003】[0003]

【発明が解決しようとする課題】すなわち、上述した凝
集沈殿法や活性汚泥法は、設備コストが非常に高くつく
ため、大規模な事業所でしか適用されていないのが実情
であり、家庭排水や実験室などの少量の廃水処理には有
効な方法ではなかった。また、上述した処理方法では、
例えば、非イオン系界面活性剤は、凝集沈殿処理では除
去することが困難であり、さらに、ベンゼン環を持つノ
ニルフェノールなどは、微生物処理でもその除去が困難
であるとされており、これらの処理について有効な方法
の開発が望まれている。
That is, the coagulation-sedimentation method and the activated sludge method described above are very expensive to install, and are therefore only applied to large-scale business establishments. It was not an effective method for treating a small amount of wastewater in a laboratory or a laboratory. In addition, in the processing method described above,
For example, nonionic surfactants are difficult to remove by coagulation-sedimentation treatment, and nonylphenol having a benzene ring is said to be difficult to remove even by microbial treatment. The development of effective methods is desired.

【0004】一方、上記公報に示されている吸着材で
は、上記した有機物質を吸着することができるものの、
繊維としては外径が太いため、布帛状に加工することが
困難なため、繊維を束ねた形状のフィルターにしか利用
されておらず、多様な形状に加工できることや吸着速度
を早めることなどで改善が望まれていた。
On the other hand, although the adsorbent disclosed in the above publication can adsorb the above-mentioned organic substances,
Since the fiber has a large outer diameter, it is difficult to process it into a fabric, so it is used only for filters with a bundle of fibers, and it can be processed into various shapes and improved by adsorbing speed etc. Was desired.

【0005】本発明は、このような従来の問題点に鑑み
てなされたものであり、その目的とするところは、凝集
沈殿法や活性汚泥法で除去が困難であった液体中の物質
を容易に吸着除去することができるとともに、通常の繊
維機械でも容易に加工でき、被吸着物質を迅速かつ大量
に吸着できる多孔質吸着繊維を提供することにある。
The present invention has been made in view of such conventional problems, and an object thereof is to easily remove a substance in a liquid which is difficult to remove by the coagulation sedimentation method or the activated sludge method. Another object of the present invention is to provide a porous adsorptive fiber that can be adsorbed and removed by the above method, can be easily processed by a normal textile machine, and can adsorb a substance to be adsorbed quickly and in large quantities.

【0006】[0006]

【課題を解決するための手段】上記目的を達成するため
に、本発明は、液体中に分散ないしは溶存されている物
質を吸着除去する多孔質繊維であって、この繊維は、ポ
リオレフィン樹脂からなる繊維本体と、前記ポリオレフ
ィン樹脂とパラフィンワックスとを混合し、溶融紡糸し
て、延伸,熱処理後に前記パラフィンワックスを除去す
ることにより形成される多数の細孔とからなることを特
徴とする。
In order to achieve the above object, the present invention is a porous fiber for adsorbing and removing a substance dispersed or dissolved in a liquid, the fiber being made of a polyolefin resin. It is characterized by comprising a fiber main body and a large number of fine pores formed by mixing the polyolefin resin and paraffin wax, melt-spinning, and stretching and heat treatment to remove the paraffin wax.

【0007】上記吸着繊維の製造方法としては、所定量
のポリオレフィン樹脂とパラフィンワックスとを溶融下
で混合し、この混合物を所定のドラフト率下で溶融紡糸
して未延伸繊維を得、次いで、この未延伸繊維を加熱下
で所定の倍率で延伸して、熱処理を施した後に、前記パ
ラフィンワックスを除去して多孔質繊維とする。
As a method for producing the above-mentioned adsorbent fiber, a predetermined amount of a polyolefin resin and paraffin wax are mixed under melting, and this mixture is melt-spun under a predetermined draft ratio to obtain an unstretched fiber. The unstretched fiber is stretched under heating at a predetermined ratio and subjected to heat treatment, and then the paraffin wax is removed to obtain a porous fiber.

【0008】本発明に使用できるポリオレフィン樹脂と
しては、ポリエチレン,ポリプロピレンが好適であり、
ポリエチレンの場合は、メルトインデックス(MI)が
0.3〜20g/10分の高密度ポリエチレンが推奨さ
れる。また、ポリプロピレンとしては、密度が概ね0.
90以上のものであって、ASTM D1238に準じ
た測定方法によるメルトフローレート(MFR)値は、
0.5〜9.0 g/10分の範囲が好ましい。
Polyethylene and polypropylene are suitable as the polyolefin resin usable in the present invention.
In the case of polyethylene, high density polyethylene having a melt index (MI) of 0.3 to 20 g / 10 min is recommended. Further, as polypropylene, the density is about 0.
90 or more, and the melt flow rate (MFR) value by the measuring method according to ASTM D1238 is
The range of 0.5 to 9.0 g / 10 minutes is preferable.

【0009】MIないしはMFRが上記範囲を外れる
と、パラフィンワックスと混合した後における溶融紡糸
時の溶融粘度が不適性となり紡糸の際に問題が生じる。
本発明に使用するパラフィンワックスは、飽和脂肪族炭
化水素化合物を主体とするものであって、溶媒による易
溶出性の点から融点が概ね50〜70℃程度のものが好
ましい。
If the MI or MFR is out of the above range, the melt viscosity at the time of melt spinning after mixing with paraffin wax becomes unsuitable, and problems occur during spinning.
The paraffin wax used in the present invention is mainly composed of a saturated aliphatic hydrocarbon compound and preferably has a melting point of about 50 to 70 ° C. from the viewpoint of easy elution with a solvent.

【0010】上記ポリオレフィン樹脂とパラフィンワッ
クスとを、ポリオレフィン樹脂100重量部に対してパ
ラフィンワックス30〜300重量部の割合で溶融して
混合し溶融紡糸用の原料とすることにより好適な結果が
得られる。溶融紡糸温度は上記混合原料の溶融粘度に応
じて決められる。溶融紡糸機は、ポリオレフィン樹脂と
パラフィンワックスとの混合混練を促進するため、スク
リュウ式押出機を使用することが望ましい。溶融紡糸時
のドラフト、すなわち未延伸繊維の巻取速度と紡糸ノズ
ルからの吐出線速度との比は、400以下にすることが
望ましい。
Suitable results can be obtained by melting and mixing the above-mentioned polyolefin resin and paraffin wax at a ratio of 30 to 300 parts by weight of paraffin wax to 100 parts by weight of polyolefin resin to prepare a raw material for melt spinning. .. The melt spinning temperature is determined according to the melt viscosity of the mixed raw material. The melt spinning machine preferably uses a screw type extruder in order to promote mixing and kneading of the polyolefin resin and the paraffin wax. It is desirable that the draft during melt spinning, that is, the ratio of the winding speed of the undrawn fiber to the linear velocity of the discharge from the spinning nozzle is 400 or less.

【0011】ドラフトが400を越えるとポリプロピレ
ン結晶のサイズが小さくなり、最終的に得られる多孔質
繊維の細孔径が小さくなりすぎて空隙率も低くなる。上
述の条件で得られた未延伸繊維は、引き続いて延伸され
るが、延伸条件は60〜120℃の範囲で歪速度、すな
わち、供給ローラー速度をGF (m/分)、延伸側ロー
ラー速度をGT (m/分)、これらのローラー間の距離
をL(m)とするときに次式で定義される値が400%
/分以下であることが望ましい。
When the draft exceeds 400, the size of the polypropylene crystal becomes small, and the pore diameter of the finally obtained porous fiber becomes too small, resulting in a low porosity. The unstretched fibers obtained under the above conditions are subsequently stretched. The stretching conditions are strain rate in the range of 60 to 120 ° C., that is, the supply roller speed is GF (m / min) and the stretching side roller speed is GT (m / min), when the distance between these rollers is L (m), the value defined by the following formula is 400%
It is preferably less than or equal to / minute.

【0012】 歪速度(%/分)=(GT −GF )/L×100 歪速度が400%/分を越えると、得られる多孔質繊維
の細孔径が不均一となり孔の潰れた箇所がかなり発生す
る。延伸温度が上記の範囲を外れる場合、すなわち、6
0℃未満では、冷延伸となりパラフィンワックス抽出後
の収縮率が大きくなって空隙率が低下する。また、12
0℃を越えると、未延伸繊維が軟化しすぎるので有効な
延伸ができず繊維強度が低くなる。延伸倍率は、1.4
〜4.5倍の範囲とすることが好ましい。延伸倍率が
1.4倍未満では、空隙率が低くなり、4.5倍を越え
ると延伸により細孔が潰れた状態になる。
Strain rate (% / min) = (GT −GF) / L × 100 When the strain rate exceeds 400% / min, the pore diameter of the obtained porous fiber becomes non-uniform and the crushed locations of the pores are considerably large. Occur. When the stretching temperature is out of the above range, that is, 6
If the temperature is lower than 0 ° C., the film is cold-stretched and the shrinkage ratio after extraction of the paraffin wax is large and the porosity is reduced. Also, 12
If the temperature exceeds 0 ° C, the unstretched fibers are too soft, and effective stretching cannot be performed, resulting in low fiber strength. The draw ratio is 1.4
It is preferable to set the range to 4.5 times. If the stretching ratio is less than 1.4 times, the porosity becomes low, and if it exceeds 4.5 times, the pores are collapsed by the stretching.

【0013】上記延伸に引き続いて熱処理を施すが、こ
の熱処理は以降においてパラフィンワックスを溶剤によ
り抽出した後に、繊維が径方向及び軸方向に収縮して実
質的に空隙率を低下させるのを防ぐもので、熱処理温度
は上記延伸温度付近ないしそれ以上で行なうことが好ま
しい。パラフィンワックスの抽出はヘキサン、ヘプタン
等の炭化水素系溶剤で行なうことが、取扱い上、低毒性
などの点から好ましい。本発明の吸着繊維は、以上の製
造方法により、50デニール以下の太さにすることが望
ましい。
A heat treatment is carried out subsequent to the above-mentioned drawing, and this heat treatment prevents the fibers from shrinking in the radial direction and the axial direction to substantially reduce the porosity after the paraffin wax is extracted with a solvent. The heat treatment temperature is preferably around the drawing temperature or higher. Extraction of paraffin wax is preferably performed with a hydrocarbon solvent such as hexane or heptane from the viewpoint of handling and low toxicity. The adsorbent fiber of the present invention is preferably made to have a thickness of 50 denier or less by the above manufacturing method.

【0014】[0014]

【作用】本発明の吸着繊維では、ポリオレフィン樹脂と
パラフィンワックスとを溶融混合し、これを紡糸した未
延伸繊維を延伸し、熱処理を施した後にパラフィンワッ
クスを抽出除去している。未延伸繊維は、ポリオレフィ
ン樹脂(ポリエチレン,ポリプロピレン)の結晶間にパ
ラフィンワックスの層を充填した状態になっている。
In the adsorbent fiber of the present invention, the polyolefin resin and the paraffin wax are melt-mixed, the undrawn fiber spun from this is drawn, and the paraffin wax is extracted and removed after heat treatment. The unstretched fibers are in a state of being filled with a layer of paraffin wax between crystals of a polyolefin resin (polyethylene, polypropylene).

【0015】この未延伸繊維の熱延伸によって得られる
延伸繊維では、この結晶間が拡げられ、延伸繊維の熱処
理後にパラフィンワックスを抽出すると、押し拡げられ
た結晶間に比較的大きい細孔が数多く形成される。従っ
て得られた多孔質繊維は、非常に特殊な構造を有してい
る。
In the stretched fiber obtained by hot drawing of the unstretched fiber, the spaces between the crystals are expanded, and when the paraffin wax is extracted after the heat treatment of the expanded fiber, many relatively large pores are formed between the expanded crystals. To be done. The resulting porous fiber thus has a very special structure.

【0016】つまり、熱延伸によってラメラ晶がジグザ
グに変形し、その後これらの結晶間に形成されたパラフ
ィンワックスの層が抽出除去されるため、細孔は繊維断
面において広くなったり狭くなったりを繰り返しなが
ら、あたかもへちまの孔のような形態で表面から内部ま
で連なった細孔を形成している。このため、繊維径が細
くても空隙率が高く比表面積も大きな繊維が得られる。
That is, the lamellar crystal is transformed into zigzag by hot drawing, and the layer of paraffin wax formed between these crystals is then extracted and removed, so that the pores repeatedly widen or narrow in the fiber cross section. However, it forms pores that are continuous from the surface to the inside, as if they were pores of a hechima. Therefore, even if the fiber diameter is small, a fiber having a high porosity and a large specific surface area can be obtained.

【0017】被吸着物の吸着は、繊維の表面を液体がま
ず濡らし、その後繊維本体に形成されている細孔に液が
侵入して、細孔の内壁面に被吸着物が吸着保持されるメ
カニズムなので、見かけの表面積が大きくなると、吸着
速度が大きくなり、比容積が小さくなるので、一定容積
の吸着材では、より多くの被吸着物を吸着保持すること
が可能になる。
In the adsorption of the adsorbed substance, the liquid first wets the surface of the fiber, and then the liquid penetrates into the pores formed in the fiber body, and the adsorbed substance is adsorbed and held on the inner wall surface of the pore. Since this is a mechanism, when the apparent surface area becomes large, the adsorption rate becomes large and the specific volume becomes small, so that it becomes possible to adsorb and hold a larger amount of the substance to be adsorbed by the adsorbent having a constant volume.

【0018】[0018]

【実施例】以下、本発明の実施例について説明するが、
本発明はこれら実施例にのみ限定されるものではない。
なお、実施例中に示した物性値の測定方法を予め示して
おく。
EXAMPLES Examples of the present invention will be described below.
The invention is not limited to these examples.
The methods for measuring the physical properties shown in the examples will be shown in advance.

【0019】空隙率 繊維径から算出した直径デニール(D1)と重量から求
めた重量デニール(D2)とで次式により空隙率を算出
した。 D1=繊維の断面積(cm2 )×9×105 cm×密度
(g/cm3 ) D2=9000m当たりの繊維重量 空隙率(%)=(直径デニール−重量デニール)/直径
デニール×100 比表面積 JIS Z 8830に規定の窒素ガス吸着法により測
定した。
Porosity The porosity was calculated by the following equation using the diameter denier (D1) calculated from the fiber diameter and the weight denier (D2) calculated from the weight. D1 = fiber cross-sectional area (cm 2 ) × 9 × 10 5 cm × density (g / cm 3 ) D2 = fiber weight per 9000 m Porosity (%) = (diameter denier−weight denier) / diameter denier × 100 ratio Surface area: Measured by the nitrogen gas adsorption method specified in JIS Z 8830.

【0020】ノニルフェノールの吸着性能試験 1000ppmのノニルフェノール水溶液300ml
に、51mmにカットした繊維2gを入れ、所定時間経
過後の残存液中の濃度を分光光度計を用いて測定した。
また、各種の染料については、繊維をメタノールで親水
化した後、所定濃度の水溶液200mlに繊維2gを入
れ、所定時間経過後の残存溶液の濃度を分光光度計で測
定した。
Adsorption performance test of nonylphenol 300 ml of 1000 ppm nonylphenol aqueous solution
Then, 2 g of the fiber cut into 51 mm was put in and the concentration in the residual liquid after a predetermined time elapsed was measured using a spectrophotometer.
Regarding various dyes, the fiber was made hydrophilic with methanol, 2 g of the fiber was put into 200 ml of an aqueous solution having a predetermined concentration, and the concentration of the residual solution after a predetermined time elapsed was measured with a spectrophotometer.

【0021】見かけの表面積 繊維1g当たりの本体の表面積を次式により算出した。 見かけの表面積(m2 /g)={外径(m)+内径
(m)}×π×9000(m)÷D2 比容積 繊維1g当たりの容積を次式により算出した。 比容積(cc/g)={外径(cm)}2 ×π÷4×9
×105 (cm)÷D2 実施例1 MI値が5.5g/10分のHDPE(三井石油化学株
式会社製:ハイゼックス2200J)100重量部と、
パラフィンワックス(日本石油株式会社製:145°パ
ラフィン)100重量部とが機械的に混合された原料
を、スクリュウ径25mm、0.40mmφ×160ホ
ールのノズルを取り付け、145℃〜180℃に設定さ
れた溶融紡糸機に供給し、巻取速度V1が200m/m
inで、紡糸ドラフト率80で10デニールの未延伸繊
維を得た。
Apparent Surface Area The surface area of the main body per 1 g of fiber was calculated by the following formula. Apparent surface area (m 2 / g) = {outer diameter (m) + inner diameter (m)} × π × 9000 (m) ÷ D 2 specific volume The volume per 1 g of fiber was calculated by the following formula. Specific volume (cc / g) = {outer diameter (cm)} 2 × π ÷ 4 × 9
× 10 5 (cm) ÷ D2 Example 1 100 parts by weight of HDPE (Mitsui Petrochemical Co., Ltd .: Hi-Zex 2200J) having an MI value of 5.5 g / 10 min.
A raw material mechanically mixed with 100 parts by weight of paraffin wax (145 ° paraffin manufactured by Nippon Oil Co., Ltd.) was installed with a nozzle having a screw diameter of 25 mm and 0.40 mmφ × 160 holes and set at 145 ° C. to 180 ° C. And the winding speed V1 is 200 m / m.
In, 10 denier undrawn fiber was obtained at a spinning draft rate of 80.

【0022】得られた未延伸繊維からなるマルチフィラ
メントを12本集めローラー延伸機を用い、110℃の
雰囲気下で全延伸倍率3.0倍、歪速度40%/min
として延伸して巻き取った。引続き、この繊維を紙管に
巻いた状態で、110℃のオーブン中で1時間定長熱処
理し、さらに機械捲縮加工をして15個/インチの捲縮
を付与し、51mmにカットしてステープルファイバー
とした後、これらを室温のヘキサン中に浸漬してパラフ
ィンワックスを抽出した。
Twelve multifilaments consisting of the unstretched fibers obtained were collected and, using a roller stretching machine, in a 110 ° C. atmosphere, a total stretching ratio of 3.0 times and a strain rate of 40% / min.
Was stretched and wound up. Subsequently, in a state in which this fiber is wound around a paper tube, it is heat-treated for a fixed length in an oven at 110 ° C. for 1 hour, further mechanically crimped to give 15 crimps / inch, and cut into 51 mm. After forming staple fibers, these were immersed in hexane at room temperature to extract paraffin wax.

【0023】得られた多孔質吸着繊維は、中実のもので
あって、空隙率は45%、比表面積は39m2 /g、重
量デニールは2.3デニールであった。このポリエチレ
ン系多孔質吸着繊維について、非イオン系界面活性剤の
一種であるノニルフェノールに対する吸着性能試験を行
い、その結果を図1に示している。また、同吸着繊維の
各種の染料に対する吸着性能試験を行い、その結果を図
2に示している。
The obtained porous adsorbent fiber was solid and had a porosity of 45%, a specific surface area of 39 m 2 / g and a weight denier of 2.3 denier. This polyethylene-based porous adsorptive fiber was subjected to an adsorption performance test for nonylphenol, which is a type of nonionic surfactant, and the results are shown in FIG. Further, an adsorption performance test for various dyes of the same adsorption fiber was conducted, and the result is shown in FIG.

【0024】実施例2 MFR値が3g/10分のポリプロピレン(宇部興産株
式会社製:YK121)100重量部とパラフィンワッ
クス(日本石油株式会社製:145°パラフィン)10
0重量部とが機械的に混合された原料を、スクリュウ径
25mm、0.4mmφ×160ホールのノズルを取り
付け、170℃〜200℃に設定された溶融紡糸機に供
給し、巻取速度V1が200m/minで紡糸ドラフト
率80で10デニールの未延伸繊維を得た。
Example 2 100 parts by weight of polypropylene (YK121 manufactured by Ube Industries, Ltd.) having an MFR value of 3 g / 10 min and paraffin wax (145 ° paraffin manufactured by Nippon Oil Co., Ltd.) 10
The raw material mechanically mixed with 0 parts by weight was supplied to a melt spinning machine set at 170 ° C to 200 ° C with a screw diameter of 25 mm, a nozzle of 0.4 mmφ x 160 holes attached, and a winding speed V1. An undrawn fiber having a spinning draft of 80 and a denier of 10 denier was obtained at 200 m / min.

【0025】得られた未延伸繊維からなるマルチフィラ
メントを12本集めローラー延伸機を用い、110℃の
雰囲気下で全延伸倍率2.9倍、歪速度40%/min
として延伸して巻き取った。引続き、この繊維を紙管に
巻いた状態で、110℃のオーブン中で1時間定長熱処
理し、さらに機械捲縮加工をして15個/インチの捲縮
を付与し、51mmにカットしてステープルファイバー
とした後、これらを室温のヘキサン中に浸漬してパラフ
ィンワックスを抽出した。
Twelve multifilaments composed of the unstretched fibers obtained were collected and, using a roller stretching machine, in a 110 ° C. atmosphere, the total stretching ratio was 2.9 times and the strain rate was 40% / min.
Was stretched and wound up. Subsequently, in a state in which this fiber is wound around a paper tube, it is heat-treated for a fixed length in an oven at 110 ° C. for 1 hour, further mechanically crimped to give 15 crimps / inch, and cut into 51 mm. After forming staple fibers, these were immersed in hexane at room temperature to extract paraffin wax.

【0026】得られた多孔質吸着繊維は、中実のもので
あって、空隙率は25%、比表面積は55m2 /g、重
量デニールは2.9デニールであった。
The obtained porous adsorbent fiber was solid and had a porosity of 25%, a specific surface area of 55 m 2 / g and a weight denier of 2.9 denier.

【0027】このポリプロピレン系吸着繊維についても
実施例1と同様に非イオン系界面活性剤の一種であるノ
ニルフェノールに対する吸着性能試験を行い、その結果
を図1に示している。
This polypropylene-based adsorbent fiber was also subjected to an adsorption performance test for nonylphenol, which is a kind of nonionic surfactant, as in Example 1, and the results are shown in FIG.

【0028】比較例1 市販のポリエチレン系中空多孔質繊維(三菱レイヨン株
式会社製)である。
Comparative Example 1 A commercially available polyethylene hollow porous fiber (manufactured by Mitsubishi Rayon Co., Ltd.).

【0029】比較例2 市販のポリプロピレン系中空多孔質繊維(宇部興産株式
会社製)である。
Comparative Example 2 A commercially available polypropylene hollow porous fiber (manufactured by Ube Industries, Ltd.).

【0030】比較例3 通常の2デニールのポリプロピレン系単一繊維である。Comparative Example 3 A polypropylene single fiber of ordinary 2 denier.

【0031】図1に示した吸着性能試験の結果からも明
らかなように、本発明にかかる吸着繊維によれば、見か
けの表面積が大きく、比容積が小さいので、ノニルフェ
ノールの吸着速度が大きく、しかも、単位容積当たりの
吸着量も大きいことがわかる。また、本実施例の吸着繊
維によれば、各種の染料に対しても有効であることが図
2からわかる。
As is clear from the results of the adsorption performance test shown in FIG. 1, according to the adsorbent fiber of the present invention, the apparent surface area is large and the specific volume is small, so that the adsorption rate of nonylphenol is high and It can be seen that the adsorption amount per unit volume is also large. Further, it can be seen from FIG. 2 that the adsorbent fiber of this example is also effective for various dyes.

【0032】[0032]

【発明の効果】以上詳細に説明したように、本発明にか
かる吸着繊維によれば、凝集沈殿処理等で除去が難しか
った液体中の溶存ないしは分散物質の除去が容易になる
上に、従来の中空多孔質繊維に比べて、繊維径が小さい
ため、吸着速度が早くなるとともに、一定容量のカート
リッジなどに充填した場合、見かけの比重が従来の中空
多孔質繊維より大きくなるので、より多く充填でき、吸
着ライフの長期化が達成される。
As described above in detail, according to the adsorbent fiber of the present invention, it is possible to easily remove the dissolved or dispersed substance in the liquid, which is difficult to remove by the coagulation-precipitation treatment or the like. Since the fiber diameter is smaller than that of the hollow porous fiber, the adsorption speed is faster and the apparent specific gravity becomes larger than that of the conventional hollow porous fiber when it is packed in a cartridge of a certain capacity, etc. Longer adsorption life is achieved.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の実施例および比較例の物性値とノニル
フェノールに対する吸着性能試験の結果を示す図表であ
る。
FIG. 1 is a table showing the physical property values of Examples and Comparative Examples of the present invention and the results of adsorption performance tests for nonylphenol.

【図2】本発明の実施例で得られた吸着繊維の各種染料
に対する吸着性能試験の結果を示す図表である。
FIG. 2 is a table showing the results of an adsorption performance test for various dyes of the adsorption fibers obtained in the examples of the present invention.

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 液体中に分散ないしは溶存されている物
質を吸着除去する多孔質繊維であって、この繊維は、ポ
リオレフィン樹脂からなる繊維本体と、前記ポリオレフ
ィン樹脂とパラフィンワックスとを混合し、溶融紡糸し
て、延伸,熱処理後に前記パラフィンワックスを除去す
ることにより形成される多数の細孔とからなることを特
徴とする吸着繊維。
1. A porous fiber for adsorbing and removing a substance dispersed or dissolved in a liquid, the fiber being a fiber body made of a polyolefin resin, the polyolefin resin and paraffin wax being mixed and melted. An adsorbent fiber comprising a large number of pores formed by removing the paraffin wax after spinning, drawing and heat treatment.
JP28671791A 1991-10-31 1991-10-31 Adsorbed fiber Expired - Fee Related JP3246755B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP28671791A JP3246755B2 (en) 1991-10-31 1991-10-31 Adsorbed fiber
EP19920900894 EP0565720A4 (en) 1991-10-31 1991-12-04 Porous fiber and method of making thereof.
PCT/JP1991/001690 WO1993009277A1 (en) 1991-10-31 1991-12-04 Porous fiber and method of making thereof
US07/852,259 US5480712A (en) 1991-10-31 1991-12-04 Non-hollow adsorbent porous fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP28671791A JP3246755B2 (en) 1991-10-31 1991-10-31 Adsorbed fiber

Publications (2)

Publication Number Publication Date
JPH05124122A true JPH05124122A (en) 1993-05-21
JP3246755B2 JP3246755B2 (en) 2002-01-15

Family

ID=17708095

Family Applications (1)

Application Number Title Priority Date Filing Date
JP28671791A Expired - Fee Related JP3246755B2 (en) 1991-10-31 1991-10-31 Adsorbed fiber

Country Status (1)

Country Link
JP (1) JP3246755B2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59168116A (en) * 1983-03-10 1984-09-21 Mitsui Petrochem Ind Ltd Production of drawn polyethylene
JPH01168303A (en) * 1987-12-22 1989-07-03 Terumo Corp Porous hollow yarn membrane and its preparation and pump-oxygenator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59168116A (en) * 1983-03-10 1984-09-21 Mitsui Petrochem Ind Ltd Production of drawn polyethylene
JPH01168303A (en) * 1987-12-22 1989-07-03 Terumo Corp Porous hollow yarn membrane and its preparation and pump-oxygenator

Also Published As

Publication number Publication date
JP3246755B2 (en) 2002-01-15

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