CN105237973A - Polylactic acid-bacterial cellulose composite material and preparation method thereof - Google Patents
Polylactic acid-bacterial cellulose composite material and preparation method thereof Download PDFInfo
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- CN105237973A CN105237973A CN201510640988.2A CN201510640988A CN105237973A CN 105237973 A CN105237973 A CN 105237973A CN 201510640988 A CN201510640988 A CN 201510640988A CN 105237973 A CN105237973 A CN 105237973A
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Abstract
The invention provides a polylactic acid-bacterial cellulose composite material and a preparation method thereof. The composite material comprises polylactic acid, bacterial cellulose, graphene, 2-methacryloyloxyethyl phosphorylcholine, proanthocyanidins, polyethylene glycol, calcium chloride, a lubricant and an assistant. The preparation method comprises the following steps: drying polylactic acid; carrying out ultrafine crushing on the dried polylactic acid, the bacterial cellulose and graphene, and putting the crushed material in ethanol to prepare a dispersion solution; and carrying out room temperature volatilization on the dispersion solution to remove ethanol, uniformly mixing the ethanol removed dispersion with residual raw materials, adding the obtained mixture to a co-rotating twin-screw provided extruder, carrying out extrusion granulation, granulating through a pelleter, and drying until the mass is constant. Compared with polylactic acid-graphene composite materials, the polylactic acid-bacterial cellulose composite material prepared in the invention has the advantages of excellent mechanical performances, high tensile strength and bending strength, substantial reduction of the water absorption rate, and suitableness for processing application.
Description
Technical field
The present invention relates to technical field of biological material, be specifically related to a kind of poly(lactic acid)-bacteria cellulose medical composite material and preparation method thereof.
Background technology
Along with the increase of fossil fuel resource and plastics aftertreatment pressure, research and development Biodegradable polymer material becomes the focus of polymer educational circles research.Poly(lactic acid) a kind ofly has good mechanical property, biological degradability, biocompatibility and environment friendly, and it is raw material sources natural reproducible resources widely, becomes the optimal selection of research and development.But, because poly(lactic acid) fragility is large and expensive, limit its application development.It is a kind of technological method having the exploitation biodegradable material of future by poly(lactic acid) and cellulose blending.But due to the hydrophobicity of poly(lactic acid) and starch and cellulosic water-absorbent, be that thermodynamics is inconsistent between two components, cause the water ratio limit power between component poor.
Summary of the invention
Goal of the invention: the invention provides a kind of poly(lactic acid)-bacteria cellulose medical composite material and preparation method thereof, each component of this medical composite material is fully compatible, has both possessed good mechanical property, possesses again lower water-intake rate.
Technical scheme of the present invention:
A kind of poly(lactic acid)-bacteria cellulose medical composite material, by weight, comprise following component: poly(lactic acid) 36 ~ 46 parts, bacteria cellulose 34 ~ 50 parts, Graphene 6 ~ 12 parts, 2-methacryloxyethyl Phosphorylcholine 0.1 ~ 10 part, pycnogenols 2 ~ 5 parts, polyoxyethylene glycol 2 ~ 5 parts, 0.2 ~ 0.8 part, calcium chloride, lubricant 1 ~ 4 part and auxiliary agent 1 ~ 3 part.
Preferably, by weight, comprise following component: poly(lactic acid) 40 ~ 42 parts, bacteria cellulose 40 ~ 44 parts, Graphene 8 ~ 10 parts, 2-methacryloxyethyl Phosphorylcholine 5 ~ 7 parts, pycnogenols 3 ~ 4 parts, polyoxyethylene glycol 3 ~ 4 parts, 0.4 ~ 0.6 part, calcium chloride, lubricant 2 ~ 3 parts and auxiliary agent 2 ~ 3 parts.
Preferred, by weight, comprise following component: poly(lactic acid) 41 parts, bacteria cellulose 42 parts, Graphene 9 parts, 2-methacryloxyethyl Phosphorylcholine 6 parts, pycnogenols 3 parts, polyoxyethylene glycol 3 parts, 0.5 part, calcium chloride, lubricant 2 parts and auxiliary agent 2 parts.
Described lubricant is calcium stearate.
Described auxiliary agent is wilkinite, mica, kaolin, one or more mixture talcous.
A preparation method for poly(lactic acid)-bacteria cellulose medical composite material, comprises the steps:
(1) poly(lactic acid) is placed in the drying in oven of 50 ~ 60 DEG C to constant mass, for subsequent use;
(2) by step (1) dried poly(lactic acid) and bacteria cellulose, Graphene micronizing, mixing, put into ethanol, rapid stirring makes dispersion liquid;
(3) by after the dispersion liquid room temperature of step (2) volatilization removing ethanol; mix with surplus stock; join extruding pelletization in parallel dual-screw compounding extrusion machine; each section of temperature of forcing machine is set to 100 DEG C, Ith district, 145 DEG C, IIth district, 165 DEG C, IIIth district, 155 DEG C, IVth district, 145 DEG C, district; screw speed is 400 ~ 450r/min; feed rate is about 12 ~ 15g/min; water cooling; obtained poly(lactic acid)-bacteria cellulose medical composite material batten; and after through dicing machine granulation, be finally placed in 50 ~ 60 DEG C of drying in oven to constant mass.
Beneficial effect:
Poly(lactic acid) prepared by the present invention-bacteria cellulose medical composite material, relative to poly(lactic acid)-graphene composite material good mechanical performance, had both had higher tensile strength and flexural strength, also significantly lower in water-intake rate simultaneously, be more suitable for processed and applied.
Embodiment
Below the specific embodiment of the present invention is described in detail.
Embodiment 1
A kind of poly(lactic acid)-bacteria cellulose medical composite material, by weight, comprise following component: poly(lactic acid) 36 parts, bacteria cellulose 34 parts, Graphene 6 parts, 2-methacryloxyethyl Phosphorylcholine 0.1 part, pycnogenols 2 parts, polyoxyethylene glycol 2 parts, 0.2 part, calcium chloride, calcium stearate 1 part and wilkinite 1 part.
Preparation method, comprises the steps:
(1) poly(lactic acid) is placed in the drying in oven of 50 DEG C to constant mass, for subsequent use;
(2) by step (1) dried poly(lactic acid) and bacteria cellulose, Graphene micronizing, mixing, put into ethanol, rapid stirring makes dispersion liquid;
(3) step (2) dried poly(lactic acid) and all the other raw materials are mixed; join extruding pelletization in parallel dual-screw compounding extrusion machine; each section of temperature of forcing machine is set to 100 DEG C, Ith district, 145 DEG C, IIth district, 165 DEG C, IIIth district, 155 DEG C, IVth district, 145 DEG C, district; screw speed is 400r/min; feed rate is about 15g/min; water cooling; obtained poly(lactic acid)-bacteria cellulose medical composite material batten; and after through dicing machine granulation, be finally placed in 50 DEG C of drying in oven to constant mass.
Embodiment 2
A kind of poly(lactic acid)-bacteria cellulose medical composite material, by weight, comprise following component: poly(lactic acid) 40 parts, bacteria cellulose 40 parts, Graphene 8 parts, 2-methacryloxyethyl Phosphorylcholine 5 parts, pycnogenols 3 parts, polyoxyethylene glycol 3 parts, 0.4 part, calcium chloride, calcium stearate 2 parts and 2 parts, mica.
Preparation method, comprises the steps:
(1) poly(lactic acid) is placed in the drying in oven of 50 DEG C to constant mass, for subsequent use;
(2) by step (1) dried poly(lactic acid) and bacteria cellulose, Graphene micronizing, mixing, put into ethanol, rapid stirring makes dispersion liquid;
(3) step (1) dried poly(lactic acid) and all the other raw materials are mixed by step (2); join extruding pelletization in parallel dual-screw compounding extrusion machine; each section of temperature of forcing machine is set to 100 DEG C, Ith district, 145 DEG C, IIth district, 165 DEG C, IIIth district, 155 DEG C, IVth district, 145 DEG C, district; screw speed is 410r/min; feed rate is about 14g/min; water cooling; obtained poly(lactic acid)-bacteria cellulose medical composite material batten; and after through dicing machine granulation, be finally placed in 50 DEG C of drying in oven to constant mass.
Embodiment 3
A kind of poly(lactic acid)-bacteria cellulose medical composite material, by weight, comprise following component: poly(lactic acid) 41 parts, bacteria cellulose 42 parts, Graphene 9 parts, 2-methacryloxyethyl Phosphorylcholine 6 parts, pycnogenols 3 parts, polyoxyethylene glycol 3 parts, 0.5 part, calcium chloride, calcium stearate 2 parts and kaolin 2 parts.
Preparation method, comprises the steps:
(1) poly(lactic acid) is placed in the drying in oven of 55 DEG C to constant mass, for subsequent use;
(2) by step (1) dried poly(lactic acid) and bacteria cellulose, Graphene micronizing, mixing, put into ethanol, rapid stirring makes dispersion liquid;
(3) step (1) dried poly(lactic acid) and all the other raw materials are mixed by step (2); join extruding pelletization in parallel dual-screw compounding extrusion machine; each section of temperature of forcing machine is set to 100 DEG C, Ith district, 145 DEG C, IIth district, 165 DEG C, IIIth district, 155 DEG C, IVth district, 145 DEG C, district; screw speed is 420r/min; feed rate is about 13g/min; water cooling; obtained poly(lactic acid)-bacteria cellulose medical composite material batten; and after through dicing machine granulation, be finally placed in 55 DEG C of drying in oven to constant mass.
Embodiment 4
A kind of poly(lactic acid)-bacteria cellulose medical composite material, by weight, comprise following component: poly(lactic acid) 42 parts, bacteria cellulose 44 parts, Graphene 10 parts, 2-methacryloxyethyl Phosphorylcholine 7 parts, pycnogenols 4 parts, polyoxyethylene glycol 4 parts, 0.6 part, calcium chloride, calcium stearate 3 parts and talcum powder 3 parts.
Preparation method, comprises the steps:
(1) poly(lactic acid) is placed in the drying in oven of 55 DEG C to constant mass, for subsequent use;
(2) by step (1) dried poly(lactic acid) and bacteria cellulose, Graphene micronizing, mixing, put into ethanol, rapid stirring makes dispersion liquid;
(3) step (1) dried poly(lactic acid) and all the other raw materials are mixed by step (2); join extruding pelletization in parallel dual-screw compounding extrusion machine; each section of temperature of forcing machine is set to 100 DEG C, Ith district, 145 DEG C, IIth district, 165 DEG C, IIIth district, 155 DEG C, IVth district, 145 DEG C, district; screw speed is 430r/min; feed rate is about 12g/min; water cooling; obtained poly(lactic acid)-bacteria cellulose medical composite material batten; and after through dicing machine granulation, be finally placed in 55 DEG C of drying in oven to constant mass.
Embodiment 5
A kind of poly(lactic acid)-bacteria cellulose medical composite material, by weight, comprise following component: poly(lactic acid) 46 parts, bacteria cellulose 50 parts, Graphene 12 parts, 2-methacryloxyethyl Phosphorylcholine 10 parts, pycnogenols 5 parts, polyoxyethylene glycol 5 parts, 0.8 part, calcium chloride, calcium stearate 4 parts and talcum powder 3 parts.
Preparation method, comprises the steps:
(1) poly(lactic acid) is placed in the drying in oven of 60 DEG C to constant mass, for subsequent use;
(2) by step (1) dried poly(lactic acid) and bacteria cellulose, Graphene micronizing, mixing, put into ethanol, rapid stirring makes dispersion liquid;
(3) step (1) dried poly(lactic acid) and all the other raw materials are mixed by step (2); join extruding pelletization in parallel dual-screw compounding extrusion machine; each section of temperature of forcing machine is set to 100 DEG C, Ith district, 145 DEG C, IIth district, 165 DEG C, IIIth district, 155 DEG C, IVth district, 145 DEG C, district; screw speed is 450r/min; feed rate is about 12g/min; water cooling; obtained poly(lactic acid)-bacteria cellulose medical composite material batten; and after through dicing machine granulation, be finally placed in 60 DEG C of drying in oven to constant mass.
Performance test:
Poly(lactic acid)/fir powder/the bamboo fiber composite material prepare embodiment 1 ~ 5 and poly(lactic acid) carry out Mechanics Performance Testing and water-intake rate measures, and the results are shown in Table 1.
Mechanic property test method: adopt the omnipotent mechanics machine of CMT-5504 type to test tensile property and bending property according to standard GB/T/T1040-92 and GB/T9341-2000.
Water-intake rate measures: by the requirement of GB1034-98, by the sample of 10mm × 10mm × 2mm size vacuum-drying 48h under 50 DEG C of conditions, weigh (being designated as m1), under room temperature (25 DEG C), sample is put into distilled water and soak 24h, then take out sample filter paper and wipe dry surface, again weigh (being designated as m2), calculate water-intake rate.Water-intake rate=(m2-m1)/m1 × 100%.
Table 1
As can be seen from Table 1, poly(lactic acid)/fir powder/bamboo fiber composite material prepared by the present invention has higher tensile strength and flexural strength relative to poly(lactic acid), and water-intake rate also reduces, and is more suitable for processed and applied.
Although embodiment of the present invention are open as above, but it is not restricted to listed in specification sheets and embodiment utilization, it can be applied to various applicable the field of the invention completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the present invention is not limited to specific details.
Claims (6)
1. poly(lactic acid)-bacteria cellulose medical composite material, it is characterized in that, by weight, comprise following component: poly(lactic acid) 36 ~ 46 parts, bacteria cellulose 34 ~ 50 parts, Graphene 6 ~ 12 parts, 2-methacryloxyethyl Phosphorylcholine 0.1 ~ 10 part, pycnogenols 2 ~ 5 parts, polyoxyethylene glycol 2 ~ 5 parts, 0.2 ~ 0.8 part, calcium chloride, lubricant 1 ~ 4 part and auxiliary agent 1 ~ 3 part.
2. a kind of poly(lactic acid)-bacteria cellulose medical composite material according to claim 1, it is characterized in that, by weight, comprise following component: poly(lactic acid) 40 ~ 42 parts, bacteria cellulose 40 ~ 44 parts, Graphene 8 ~ 10 parts, 2-methacryloxyethyl Phosphorylcholine 5 ~ 7 parts, pycnogenols 3 ~ 4 parts, polyoxyethylene glycol 3 ~ 4 parts, 0.4 ~ 0.6 part, calcium chloride, lubricant 2 ~ 3 parts and auxiliary agent 2 ~ 3 parts.
3. a kind of poly(lactic acid)-bacteria cellulose medical composite material according to claim 1, it is characterized in that, by weight, comprise following component: poly(lactic acid) 41 parts, bacteria cellulose 42 parts, Graphene 9 parts, 2-methacryloxyethyl Phosphorylcholine 6 parts, pycnogenols 3 parts, polyoxyethylene glycol 3 parts, 0.5 part, calcium chloride, lubricant 2 parts and auxiliary agent 2 parts.
4. a kind of poly(lactic acid)-bacteria cellulose medical composite material according to any one of claim 1 ~ 3, is characterized in that, described lubricant is calcium stearate.
5. a kind of poly(lactic acid)-bacteria cellulose medical composite material according to any one of claim 1 ~ 3, is characterized in that, described auxiliary agent is wilkinite, mica, kaolin, one or more mixture talcous.
6. the preparation method of a kind of poly(lactic acid)-bacteria cellulose medical composite material according to claim 1, is characterized in that, comprise the steps:
(1) poly(lactic acid) is placed in the drying in oven of 50 ~ 60 DEG C to constant mass, for subsequent use;
(2) by step (1) dried poly(lactic acid) and bacteria cellulose, Graphene micronizing, mixing, put into ethanol, rapid stirring makes dispersion liquid;
(3) by after the dispersion liquid room temperature of step (2) volatilization removing ethanol; mix with surplus stock; join extruding pelletization in parallel dual-screw compounding extrusion machine; each section of temperature of forcing machine is set to 100 DEG C, Ith district, 145 DEG C, IIth district, 165 DEG C, IIIth district, 155 DEG C, IVth district, 145 DEG C, district; screw speed is 400 ~ 450r/min; feed rate is about 12 ~ 15g/min; water cooling; obtained poly(lactic acid)-bacteria cellulose medical composite material batten; and after through dicing machine granulation, be finally placed in 50 ~ 60 DEG C of drying in oven to constant mass.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106633923A (en) * | 2016-11-28 | 2017-05-10 | 天津志学科技有限公司 | Degradable medical composite novel material and preparation method thereof |
| CN106700585A (en) * | 2016-11-28 | 2017-05-24 | 天津旁耘科技有限公司 | Novel medical composite material and preparation method thereof |
| CN110804104A (en) * | 2019-10-30 | 2020-02-18 | 暨南大学 | Cell membrane bionic surface modified bacterial cellulose and preparation method and application thereof |
| CN113144279A (en) * | 2021-03-23 | 2021-07-23 | 中国科学院宁波材料技术与工程研究所 | Composite hydrogel for diabetic foot wound dressing, and preparation method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104725804A (en) * | 2015-03-31 | 2015-06-24 | 苏州维泰生物技术有限公司 | Polylactic acid-fir powder-bamboo fiber composite material and preparation method thereof |
| CN104725803A (en) * | 2015-03-31 | 2015-06-24 | 苏州维泰生物技术有限公司 | Polyhydroxyacetic acid-copper ammonia regenerated cellulose-polylactic acid composite material and preparation method thereof |
-
2015
- 2015-09-30 CN CN201510640988.2A patent/CN105237973A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104725804A (en) * | 2015-03-31 | 2015-06-24 | 苏州维泰生物技术有限公司 | Polylactic acid-fir powder-bamboo fiber composite material and preparation method thereof |
| CN104725803A (en) * | 2015-03-31 | 2015-06-24 | 苏州维泰生物技术有限公司 | Polyhydroxyacetic acid-copper ammonia regenerated cellulose-polylactic acid composite material and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 赵梓年等: "聚乳酸/细菌纤维素复合材料制备研究", 《塑料工业》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106633923A (en) * | 2016-11-28 | 2017-05-10 | 天津志学科技有限公司 | Degradable medical composite novel material and preparation method thereof |
| CN106700585A (en) * | 2016-11-28 | 2017-05-24 | 天津旁耘科技有限公司 | Novel medical composite material and preparation method thereof |
| CN110804104A (en) * | 2019-10-30 | 2020-02-18 | 暨南大学 | Cell membrane bionic surface modified bacterial cellulose and preparation method and application thereof |
| CN110804104B (en) * | 2019-10-30 | 2021-12-07 | 暨南大学 | Cell membrane bionic surface modified bacterial cellulose and preparation method and application thereof |
| CN113144279A (en) * | 2021-03-23 | 2021-07-23 | 中国科学院宁波材料技术与工程研究所 | Composite hydrogel for diabetic foot wound dressing, and preparation method and application thereof |
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