CN106009050A - Nata aerogel blending-modified Pulullan grafted pineapple cellulose packaging film and preparation method thereof - Google Patents
Nata aerogel blending-modified Pulullan grafted pineapple cellulose packaging film and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a Nata aerogel blending-modified Pulullan grafted pineapple cellulose packaging film which is prepared from the following components in parts by weight: pineapple leaf fibers, composite cellulase, 3.3 to 3.5 parts of magnesium oxide nanoparticles, citric acid, Nata aerogel, Pullullan, ultrafine chitosan, oxidized polyethlene wax, maleic anhydride, pueraria starches, garlic essence, stearic acid, polyethylene glycol and a proper amount of deionized water. The pineapple cellulose packaging film is prepared by preparing a homogeneous film solution by performing ultrasonic assisted emulsification and shearing on Nata aerogel blending-modified Pulullan and a nano pineapple leaf cellulose solution as well as other components, so that the film is uniform in texture, and has a good three-dimensional grid structure and breathability, and application of pineapple cellulose and Pulullan in the field of packaging film materials is realized; by the adoption of the nano pineapple leaf cellulose solution, the prepared cellulose film is high in breathability and good in spatial structure.
Description
Technical field
The present invention relates to arghan packaging film technical field, particularly relate to a kind of Nata aeroge blending and modifying pulullan polysaccharide grafting pina fibre packaging film and preparation method thereof.
Background technology
With cellulose as raw material, the different macromolecule member material of processability plays an important role in medical science, biology and food medicine and other fields, has become as the focus of current research.China often produces substantial amounts of Fructus Ananadis comosi per year, and arghan has the health-care effecies such as antibacterial, smelly eliminating, utilizes arghan to prepare macromolecule member material and has huge development prospect.The fiber macromolecular alignment of arghan crystallization song is neat, regular, and the polyhydroxy structure of fiber molecule and strong hydrogen bonding effect make its cleanliness factor and the degree of orientation higher, and chemical reactivity is low, thus causes its application to be restricted.Wei Xiaoyi, Yang Qin etc. " agriculture in south journal ", 2016, 47(1): 101-106 " arghan element film preparation process optimization " utilizes emulsifying cut mode to make arghan element be dissolved in ionic liquid to improve the chemical reactivity of arghan, realize the preparation of cellulose membrane, specific practice is: be ground into cotton shape with Universalpulverizer after first being dried by arghan element, alkali processes and acid treatment realizes its purification process respectively, then it is being placed in together with ionic liquid in mulser, carry out shear treatment, the cellulose ionic liquid homogeneous phase solution of film is prepared in acquisition, afterwards homogeneous phase solution is layered on the carrier scribbling politef, through casting solution (glycerol, ethanol) etc. soak drying and forming-film；This process technique improves the chemical reaction activity of arghan element, improve the homogeneous of coating solution, but operate and employ substantial amounts of acidizer and alkali inorganic agent, adds somewhat to pollute, add arghan element film preparation cost, the cellulose membrane function singleness simultaneously prepared.Nano-cellulose has the excellent properties such as high-crystallinity, high intensity, high-specific surface area, environmental friendliness and low cost, its molecular structure also exists substantial amounts of-OH, intermolecular and intramolecular hydrogen bond it is easily formed with other natural macromoleculars when being blended, during for making membrane material, the membrane structure that can make the formation of intermingling material is more stable.Micro-nano bubble refers to diameter bubble between micron bubble (bubble of a diameter of 10-50um in water body) and nano bubble (a diameter of bubble less than 200nm in water body), there is big specific surface area, can in water body the time of staying long, and micro-nano bubble is when shrinking, substantial amounts of hydroxyl radical free radical can be produced, these substantial amounts of hydroxyl radical free radicals can attract the hydrogen bond in arghan element to a certain extent, play equivalent acidifying alkalization and destroy the effect that hydrogen bond is identical, the nanorize promoting arghan is improved its chemical reaction activity there is certain facilitation.Pulullan polysaccharide is the polymer substance of colorless and odorless odorless, there is edibility and biodegradability, there is good film property, the thin film made has good gas barrier property and water preventing ability, but containing substantial amounts of hydrophilic radical on pulullan polysaccharide strand, the fibrous membrane prepared can be combined with other fibrous material, but these fibrous membranes chance water is instant, limits its application on some packaging films；
The fibrous membrane that arghan based on modified pulullan polysaccharide and high chemical reactivity combines comprehensive utilization and abundant packaging film kind to improving pineapple leaves is significant.
Summary of the invention
The object of the invention is contemplated to make up the defect of prior art, it is provided that a kind of Nata aeroge blending and modifying pulullan polysaccharide grafting pina fibre packaging film and preparation method thereof.
The present invention is achieved by the following technical solutions:
A kind of Nata aeroge blending and modifying pulullan polysaccharide grafting pina fibre packaging film, including following parts by weight of component: arghan 135-140, compound cellulase 6.5-7, nano oxidized magnesium particle 3.3-3.5, citric acid 4.5-5, Nata aeroge 8-9, pulullan polysaccharide 21-22, ultra micro chitosan 12-13, OPE 5-6, maleic anhydride 3-4, Radix Puerariae starch 16-18, Bulbus Allii quintessence oil 4-5, stearic acid 3-4, Polyethylene Glycol 2-3, appropriate water, appropriate deionized water.
A kind of Nata aeroge blending and modifying pulullan polysaccharide grafting pina fibre packaging film preparation method, comprises the following steps:
(1), cotton shape is become by pulverization process 30min in Universalpulverizer after being dried by arghan, slurry is obtained afterwards standby with the water mixing and stirring of citric acid and gross weight 4 times, slurry is heated to 60 DEG C, and it is continuously added into compound cellulase mix and blend enzymolysis 40min, after 100 DEG C of enzyme denaturing 5min, vacuum filtration is also washed, obtain purification arghan, purification arghan will add nano oxidized magnesium particle and the deionized water of gross weight 10 times, high pressure homogenize machinery through 700bar processes 30min again, strength supersound process 50min under 1400W power, obtain uniform mixed liquor, using this uniform mixed liquor of intermittent steam blasting procedure explosion treatment 5 times, 10min every time, obtain nanorize arghan cellulose solution standby；
(2), the deionized water mixed high-voltage homogenizing of ultra micro chitosan, Nata aeroge and gross weight 2-3 times is processed 20min, 30min is reacted 100 DEG C of heated and stirred, then ultra micro chitosan graft Nata aeroge it is spray-dried to obtain, the deionized water of ultra micro chitosan graft Nata aeroge, pulullan polysaccharide and gross weight 0.5 times is mixed, react 20min 100 DEG C of heated and stirred, obtain Nata aeroge blending and modifying pulullan polysaccharide standby；
(3) 100 DEG C of heated and stirred 20min after, the deionized water of nanorize arghan cellulose solution, Nata aeroge blending and modifying pulullan polysaccharide, OPE, maleic anhydride, Radix Puerariae starch, Bulbus Allii quintessence oil, stearic acid, Polyethylene Glycol and gross weight 4 times being mixed, it is then placed in the mulser with intense ultrasonic wave carrying out ultrasonic assistant emulsifying shear treatment 40min, then microwave treatment 5min of 350W is carried out, obtain homogeneous membrane solution for standby, wherein ultrasonic power 1000W, emulsifying shear rate 15000r/min；
(4), by homogeneous membrane solution with pouring in mould, then carry out deaeration process through supersound process 16-18min, then at 50-55 DEG C, humidity be 55-60% calorstat in be dried 3-4h, to obtain final product.
The invention have the advantage that
nullThe present invention use the pulullan polysaccharide of Nata aeroge blending and modifying pulullan polysaccharide blending and modifying combine nanorize arghan cellulose solution and other compositions through ultrasonic assistant emulsifying shear preparation homogeneous membrane solution prepare pina fibre element film，Film is homogeneous，There is good three-dimensional net structure and breathability，Achieve the application at packaging film Material Field of pina fibre element and pulullan polysaccharide，The cellulose membrane of preparation is because using nanorize pina fibre cellulose solution，There is good breathability and spatial structure，The Nata aeroge used is the aeroge with three-dimensional porous structure and excellent toughness prepared for raw material by technology such as Bill's lyophilizations with Nata，Nata is with coconut juice as raw material，A kind of cellulose aquagel by acetobacter fermentation，Have low in calories，Without cholesterol，Human body is had obvious physiological regulation and health care，There is retentiveness strong、Acidproof、Heat-resisting，Can dissolve under the high temperature conditions，There is good processability，By the ultra micro chitosan graft Nata aeroge blending and modifying to pulullan polysaccharide，Reduce chance water solubility properties，Improve film forming ability and stretch-proof energy；The Radix Puerariae starch that adds, Bulbus Allii quintessence oil, it is possible to increase filming performance, strengthen its antibiotic effect；For the problem that arghan chemical reaction activity is low, have employed enzyme purification, highly active nano oxidized magnesium particle additional high pressure homogenizing, strong supersound process and intermittent steam blasting procedure explosion treatment successively, achieve purification and the nanorize of arghan, lay a good foundation for preparing high performance arghan film；For the homogeneous problem of coating solution, using strong supersound process to coordinate the mode that emulsifying is sheared, strong supersound process improves the content of micro-nano bubble in coating solution, helps lend some impetus to the dissolving of each material, improves the homogeneous of membrane material solution.
Detailed description of the invention
A kind of Nata aeroge blending and modifying pulullan polysaccharide grafting pina fibre packaging film, including following parts by weight of component: arghan 135, compound cellulase 6.5, nano oxidized magnesium particle 3.3, citric acid 4.5, Nata aeroge 8, pulullan polysaccharide 21, ultra micro chitosan 12, OPE 5, maleic anhydride 3, Radix Puerariae starch 16, Bulbus Allii quintessence oil 4, stearic acid 3, Polyethylene Glycol 2, appropriate water, appropriate deionized water.
A kind of Nata aeroge blending and modifying pulullan polysaccharide grafting pina fibre packaging film preparation method, comprises the following steps:
(1), cotton shape is become by pulverization process 30min in Universalpulverizer after being dried by arghan, slurry is obtained afterwards standby with the water mixing and stirring of citric acid and gross weight 4 times, slurry is heated to 60 DEG C, and it is continuously added into compound cellulase mix and blend enzymolysis 40min, after 100 DEG C of enzyme denaturing 5min, vacuum filtration is also washed, obtain purification arghan, purification arghan will add nano oxidized magnesium particle and the deionized water of gross weight 10 times, high pressure homogenize machinery through 700bar processes 30min again, strength supersound process 50min under 1400W power, obtain uniform mixed liquor, using this uniform mixed liquor of intermittent steam blasting procedure explosion treatment 5 times, 10min every time, obtain nanorize arghan cellulose solution standby；
(2), the deionized water mixed high-voltage homogenizing of ultra micro chitosan, Nata aeroge and gross weight 2 times is processed 20min, 30min is reacted 100 DEG C of heated and stirred, then ultra micro chitosan graft Nata aeroge it is spray-dried to obtain, the deionized water of ultra micro chitosan graft Nata aeroge, pulullan polysaccharide and gross weight 0.5 times is mixed, react 20min 100 DEG C of heated and stirred, obtain Nata aeroge blending and modifying pulullan polysaccharide standby；
(3) 100 DEG C of heated and stirred 20min after, the deionized water of nanorize arghan cellulose solution, Nata aeroge blending and modifying pulullan polysaccharide, OPE, maleic anhydride, Radix Puerariae starch, Bulbus Allii quintessence oil, stearic acid, Polyethylene Glycol and gross weight 4 times being mixed, it is then placed in the mulser with intense ultrasonic wave carrying out ultrasonic assistant emulsifying shear treatment 40min, then microwave treatment 5min of 350W is carried out, obtain homogeneous membrane solution for standby, wherein ultrasonic power 1000W, emulsifying shear rate 15000r/min；
(4), by homogeneous membrane solution with pouring in mould, then carry out deaeration process through supersound process 16min, then at 50 DEG C, humidity be 55% calorstat in be dried 3h, to obtain final product.
After tested, this packaging film impingement rate is 20.98kJ/m2, and anti-to stretch intensity be 30.15MPa, elongation at break 44.2%, the OTR oxygen transmission rate of film is reached for 3.51 × 10-5cm3/ (m2 d Pa), after soil buries 150d, its biological degradation rate reaches 95.4%, demonstrates excellent biological degradability.
Claims (2)
1. a Nata aeroge blending and modifying pulullan polysaccharide grafting pina fibre packaging film, it is characterized in that, including following parts by weight of component: arghan 135-140, compound cellulase 6.5-7, nano oxidized magnesium particle 3.3-3.5, citric acid 4.5-5, Nata aeroge 8-9, pulullan polysaccharide 21-22, ultra micro chitosan 12-13, OPE 5-6, maleic anhydride 3-4, Radix Puerariae starch 16-18, Bulbus Allii quintessence oil 4-5, stearic acid 3-4, Polyethylene Glycol 2-3, appropriate water, appropriate deionized water.
2. a Nata aeroge blending and modifying pulullan polysaccharide grafting pina fibre packaging film preparation method, it is characterised in that comprise the following steps:
(1), cotton shape is become by pulverization process 30min in Universalpulverizer after being dried by arghan, slurry is obtained afterwards standby with the water mixing and stirring of citric acid and gross weight 4 times, slurry is heated to 60 DEG C, and it is continuously added into compound cellulase mix and blend enzymolysis 40min, after 100 DEG C of enzyme denaturing 5min, vacuum filtration is also washed, obtain purification arghan, purification arghan will add nano oxidized magnesium particle and the deionized water of gross weight 10 times, high pressure homogenize machinery through 700bar processes 30min again, strength supersound process 50min under 1400W power, obtain uniform mixed liquor, using this uniform mixed liquor of intermittent steam blasting procedure explosion treatment 5 times, 10min every time, obtain nanorize arghan cellulose solution standby；
(2), the deionized water mixed high-voltage homogenizing of ultra micro chitosan, Nata aeroge and gross weight 2-3 times is processed 20min, 30min is reacted 100 DEG C of heated and stirred, then ultra micro chitosan graft Nata aeroge it is spray-dried to obtain, the deionized water of ultra micro chitosan graft Nata aeroge, pulullan polysaccharide and gross weight 0.5 times is mixed, react 20min 100 DEG C of heated and stirred, obtain Nata aeroge blending and modifying pulullan polysaccharide standby；
(3) 100 DEG C of heated and stirred 20min after, the deionized water of nanorize arghan cellulose solution, Nata aeroge blending and modifying pulullan polysaccharide, OPE, maleic anhydride, Radix Puerariae starch, Bulbus Allii quintessence oil, stearic acid, Polyethylene Glycol and gross weight 4 times being mixed, it is then placed in the mulser with intense ultrasonic wave carrying out ultrasonic assistant emulsifying shear treatment 40min, then microwave treatment 5min of 350W is carried out, obtain homogeneous membrane solution for standby, wherein ultrasonic power 1000W, emulsifying shear rate 15000r/min；
(4), by homogeneous membrane solution with pouring in mould, then carry out deaeration process through supersound process 16-18min, then at 50-55 DEG C, humidity be 55-60% calorstat in be dried 3-4h, to obtain final product.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113845993A (en) * | 2021-10-27 | 2021-12-28 | 李建坤 | Pineapple fruit vinegar and processing technology thereof |
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| CN103102419A (en) * | 2013-01-25 | 2013-05-15 | 浙江理工大学 | Method for preparing nano microcrystalline cellulose by hydrolyzing phyllostachys edulis fiber with cellulase |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113845993A (en) * | 2021-10-27 | 2021-12-28 | 李建坤 | Pineapple fruit vinegar and processing technology thereof |
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Application publication date: 20161012 |