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Method for preparing corrugated-paper adhesive by using irradiation-microwave to esterify potato starch

A technology of potato starch and corrugated paper glue, which is applied in the field of corrugated paper, can solve the problems of nanocrystalline cellulose research that are rarely reported, and achieve the effect of improving performance and good dispersion

Active Publication Date: 2019-02-22
马鞍山市康辉纸箱纸品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many studies on starch modification at home and abroad, but there are few reports on nanocrystalline cellulose as an auxiliary agent for starch oxidation and crosslinking reactions.

Method used

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  • Method for preparing corrugated-paper adhesive by using irradiation-microwave to esterify potato starch

Examples

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Effect test

Embodiment 1

[0022] A method for preparing corrugated paper adhesive with irradiation-microwave esterified potato starch, is characterized in that, comprises the steps:

[0023] (1) Preparation of irradiation-microwave esterified potato starch:

[0024] Add deionized water to 80 parts of irradiated-microwave-treated potato starch at a ratio of 1:5, mechanically stir in a water bath at 30-35°C for 1 hour, add sodium hydroxide dropwise to control the pH to 8, and add 9 parts of esterifying agent dropwise, and react 1h, adjust the pH to 6 with hydrochloric acid, centrifuge, wash twice with ethanol solution and distilled water respectively, dry and pulverize through a 100-mesh sieve to obtain irradiation-microwave esterified potato starch;

[0025] (2) Surface modification of nanocrystalline cellulose:

[0026] Mix 3-methacryloyloxypropyltrimethoxysilane and ethanol to form a solution with a volume fraction of 8%, add hydrochloric acid dropwise to adjust the pH to 3, and perform a hydrolysis ...

Embodiment 2

[0034] A method for preparing corrugated paper adhesive with irradiation-microwave esterified potato starch, is characterized in that, comprises the steps:

[0035] (1) Preparation of irradiation-microwave esterified potato starch:

[0036] Add deionized water to 100 parts of irradiated-microwave-treated potato starch at a ratio of 1:5, mechanically stir in a water bath at 30-35°C for 2 hours, add sodium hydroxide dropwise to control the pH to 9, and add 12 parts of esterifying agent dropwise, and react 2h, adjust the pH to 7 with hydrochloric acid, centrifuge, wash with ethanol solution and distilled water 3 times respectively, dry and pulverize through a 100-mesh sieve to obtain irradiation-microwave esterified potato starch;

[0037] (2) Surface modification of nanocrystalline cellulose:

[0038] Mix 3-methacryloyloxypropyltrimethoxysilane and ethanol to form a solution with a volume fraction of 8%, add dropwise hydrochloric acid to adjust the pH to 4, carry out hydrolysis...

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Abstract

The invention discloses a method for preparing a corrugated-paper adhesive by using irradiation-microwave to esterify potato starch. The method comprises the following steps of: adding distilled waterinto the potato starch esterified by irradiation-microwave, adding modified nanocrystalline cellulose while stirring, then adding an oxidizing agent, after stirring and reacting in water bathing, adding aqueous sodium thiosulfate solution to end reaction, adding anhydrous sodium sulfate and a crosslinking agent, continuously carrying out constant-temperature water bathing, washing and filtering by using the distilled water in a vacuum pump, drying in a drying box, and grinding to the corrugated-paper adhesive. The method disclosed by the invention has the beneficial effects that 3-methacryloxypropyl trimethoxysilane is used as a surface treating agent of nanocrystalline cellulose particles, the modified nanocrystalline cellulose is used as reinforcing filler and is good in dispersion in starch matrix, so that the property of the adhesive can be obviously improved.

Description

technical field [0001] The invention belongs to the field of corrugated paper, and in particular relates to a method for preparing a corrugated paper adhesive by means of irradiation-microwave esterification of potato starch. Background technique [0002] As an important biomass resource, starch is widely used in many fields such as food, construction, medicine, papermaking and chemical industry, and plays an important role in the process of industrial development. However, natural starch cannot be directly used in many fields such as corrugated paper adhesives due to its shortcomings such as high viscosity of gelatinized liquid, easy retrogradation, and weak adhesion. Starch generally needs to undergo physical, chemical and biological modifications before use to meet the needs of industrial production. At present, there are many studies on starch modification at home and abroad, but there are few reports on the study of nanocrystalline cellulose as an auxiliary agent for s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J103/10C09J11/08
CPCC09J11/08C09J103/10C08L1/04
Inventor 李昌斌
Owner 马鞍山市康辉纸箱纸品有限公司
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