Degradable high-barrier composite material and preparation method thereof
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A composite material and high-barrier technology, which is applied in the field of high-barrier composite materials and its preparation, can solve the problems of non-degradable waste, consumption of petroleum resources, and pollution discharge.
Inactive Publication Date: 2018-07-17
CHANGDE JINDE NEW MATERIAL TECH CO LTD
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For half a century, chemically synthesized plastic products have been widely used in food packaging and fresh-keeping fields precisely because of their rich sources, light weight, beautiful products, convenient processing, hygiene, low price, and stable properties. Non-biodegradable and non-completely renewable; consume more petroleum resources: discharge s
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Embodiment 1
[0026] A degradable high-barrier composite material and a preparation method thereof, the composite material comprising the following steps:
[0027] (1) Preparation of the solution:
[0028] Tapioca starch solution: Dissolve 6.0 grams of tapioca starch in 100ml of distilled water, keep stirring in a water bath at 80°C for 30 minutes, and obtain a tapioca starch solution;
[0029] Polyvinyl alcohol solution: Dissolve 9.0 grams of polyvinyl alcohol in 100ml of distilled water, maintain it in a water bath at 95°C and stir for 30 minutes to obtain a polyvinyl alcohol solution;
[0030] Chitosan solution: Dissolve 3.0 grams of chitosan in 100 ml of 5% acetic acid solution, and ultrasonically disperse in an ultrasonic cleaner for 30 minutes to obtain a chitosan solution.
[0032] Add the above polyvinyl alcohol solution and chitosan solution into the tapioca starch solution, and add 10mL a...
Embodiment 2
[0034] A degradable high-barrier composite material and a preparation method thereof, the composite material comprising the following steps:
[0035] (1) Preparation of the solution:
[0036] Tapioca starch solution: Dissolve 6.0 grams of tapioca starch in 100ml of distilled water, keep stirring in a water bath at 80°C for 30 minutes, and obtain a tapioca starch solution;
[0037] Polyvinyl alcohol solution: Dissolve 9.0 grams of polyvinyl alcohol in 100ml of distilled water, maintain it in a water bath at 95°C and stir for 30 minutes to obtain a polyvinyl alcohol solution;
[0038] Chitosan solution: Dissolve 3.0 grams of chitosan in 100 ml of 5% acetic acid solution, and ultrasonically disperse in an ultrasonic cleaner for 30 minutes to obtain a chitosan solution.
[0040] Add the above polyvinyl alcohol solution and chitosan solution into the tapioca starch solution, and add 10mL a...
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Abstract
The invention discloses a degradable high-barrier composite material and a preparation method thereof. The preparation method of the composite material comprises the following steps: dissolving 6.0 gof tapioca starch in 100 ml of distilled water, and keeping in a water bath at 80 DEG C for stirring in for 30 min to obtain a tapioca starch solution; dissolving 9.0 g of polyvinyl alcohol in 100 mlof distilled water, and keeping in a water bath at 95 DEG C for stirring for 30 min to obtain a polyvinyl alcohol solution; dissolving 3.0 g of chitosan in 100 ml of a 5% acetic acid solution, and ultrasonically dispersing in an ultrasonic cleaner for 30 min to obtain a chitosan solution; adding the polyvinyl alcohol solution and the chitosan solution to the tapioca starch solution, adding 10mL ofan absolute ethanol solution for defoaming treatment, adjusting the pH of the solution to 4.0, stirring in a water bath at 90 DEG C for 30 min, adding a certain amount of plasticizer and cross-linking agent, after the stirring reaction is finished, performing vaccum degassing on a film solution, and finishing the vaccum degassing until no bubble is produced in the solution to obtain a tapioca starch/polyvinyl alcohol/chitosan thin composite material. The high barrier composite material has the advantages of good barrier property, degradability and the like, and is an ideal composite material.
Description
technical field [0001] The invention belongs to the technical field of barrier composite material synthesis, and in particular relates to a degradable high barrier composite material and a preparation method thereof. Background technique [0002] Environment, population and resources are the three main problems restricting the sustainable development of our country in the 21st century. Saving resources and protecting the environment have become the basic strategies for countries all over the world to achieve sustainable development. For half a century, chemically synthesized plastic products have been widely used in food packaging and fresh-keeping fields precisely because of their rich sources, light weight, beautiful products, convenient processing, hygiene, low price, and stable properties. Non-biodegradable and non-completely renewable; consume more petroleum resources: discharge serious pollution to the environment during the whole life cycle of production, transportat...
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