Degradable biological starch film capable of being repeatedly used

A bio-starch, corn starch technology, applied in the application, plant protection, plant protection cover and other directions, can solve the problems that the comprehensive performance cannot reach the actual use, decrease, etc., to improve the quality and stability, the preparation process is simple, the increase water retention effect

Inactive Publication Date: 2016-11-16
MAANSHAN WUGU POULTRY IND SPECIALIZED COOP
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Problems solved by technology

[0003] In the article "Study on Hydrophobic Modified Starch/PVA Biodegradable Plastic Mulch Film", the author used corn starch as raw material, which was double-modified by carboxymethyl etherification and cross-linking. The molar ratio of starch is 1.85, the etherification time is 2.33h, and the concentration of ethanol is 84.65%. The dosage is 1.5%, and then get cross-linked carboxymethyl starch with strong thermoplasticity, and then use it to blend with PVA. Aft

Method used

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Embodiment Construction

[0014] A reusable biodegradable biostarch film, prepared from the following raw materials in parts by weight (kg): dry basis corn starch 64, ethanol 23, monochloroacetic acid 11, silicon dioxide 14, epichlorohydrin 0.08, Dimethylformamide 60, laminarin 3, glycerin 2, tributyl citrate 4, antioxidant 10100.2, polyvinyl alcohol 6, 85% ethanol solution, and deionized water.

[0015] Described a kind of reusable biodegradable biostarch film is prepared by the following specific steps:

[0016] (1) Mix dry corn starch and 6 times the amount of sodium hydroxide evenly, transfer to the reaction kettle to stir, the rotation speed is 80r / min, stir and react at 35°C for 30min, and mix the ethanol solution and monochloroacetic acid evenly , spray on the starch surface and continue to stir for 10 minutes. After the reaction, cool to room temperature, then wash the modified starch with 85% ethanol solution and add an appropriate amount of glacial acetic acid to adjust the pH to 7.0. Suction...

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Abstract

The invention discloses a degradable biological starch film capable of being repeatedly used. The degradable biological starch film is prepared from the following raw materials in parts by weight: 64 to 70 parts of dry basis corn starch, 23 to 26 parts of ethyl alcohol, 11 to 15 parts of monochloroacetic acid, 14 to 16 parts of silicon dioxide, 0.08 to 0.1 part of epoxy chloropropane, 60 to 80 parts of dimethylformamide, 3 to 4 parts of laminarin, 2 to 4 parts of glycerin, 4 to 6 parts of tributyl citrate, 0.2 to 0.3 part of antioxidants 1010, 6 to 8 parts of polyving akohol, a proper amount of 85-percent ethanol solution and a proper amount of deionized water. The prepared starch film has the full degradation performance; the environment pollution caused by conventional plastics can be avoided; no hard is caused on soil; green and environment-friendly effects are achieved; the preparation process is simple; the cost is low; the degradable biological starch film is worthy of being popularized.

Description

technical field [0001] The invention relates to the technical field of agricultural mulching films, in particular to a reusable and degradable biological starch film. Background technique [0002] At present, plastic film mulching technology has been widely promoted in agriculture, and has been applied to the planting of wheat, rice, corn, soybean, sorghum, cotton and other crops, and the effect of increasing production is obvious. It is neither corroded by microorganisms nor decomposed by itself. If things go on like this, it will inevitably bring pollution hazards that are difficult to solve for future generations. Therefore, research on degradable mulch has gradually attracted attention. Starch is an abundant renewable resource in nature. It is non-toxic, harmless, and completely biodegradable. However, its poor mechanical properties and waterproof properties limit its application. Its application is limited. Starch is a renewable resource, which not only has a wide r...

Claims

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Application Information

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IPC IPC(8): C08L3/08C08L5/00C08L29/04C08K13/02C08K3/36C08K5/053C08K5/11C08J5/18C08B31/12A01G13/02
CPCA01G13/0275C08B31/006C08B31/12C08J5/18C08J2303/08C08J2405/00C08L3/08C08L2201/06C08L2203/16C08L2205/03C08L5/00C08L29/04C08K13/02C08K3/36C08K5/053C08K5/11
Inventor 高绍彬
Owner MAANSHAN WUGU POULTRY IND SPECIALIZED COOP
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