Hydrophobic starch-based nano biological latex as well as preparation method and application thereof

A hydrophobic, starch-based technology, used in coatings, paper coatings, textiles and papermaking, etc., can solve the problems of poor water resistance, paper gloss, poor water resistance and folding resistance, and achieve high solid content and high water resistance. The effect of low viscosity and low viscosity

Inactive Publication Date: 2018-12-11
NANXIONG MATERIAL PRODION BASE OF CHINESE ACADEMY OF SCI GUANGZHOU CHEM +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitation of the structure of starch itself, the existence of polyhydroxyl groups in the molecule makes it have a strong binding force with water molecules, resulting in poor water resistance of starch-based bio-latex, and the gloss and water resistance of paper coated with it. , poor folding resistance

Method used

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  • Hydrophobic starch-based nano biological latex as well as preparation method and application thereof
  • Hydrophobic starch-based nano biological latex as well as preparation method and application thereof
  • Hydrophobic starch-based nano biological latex as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] This example provides a hydrophobic starch-based nano-bio-emulsion and a preparation method thereof.

[0028] A kind of hydrophobic starch-based nano bio-emulsion, comprising following raw materials:

[0029]

[0030] The preparation method of the above-mentioned hydrophobic starch-based nano-biological latex: in a 500mL four-neck flask equipped with a stirrer, a thermometer, and a condenser tube, add 100g of absolute dry cornstarch, 120g of water and 5g of glycerin, stir under nitrogen protection, and heat up To 80°C, react for 0.5h to fully gelatinize the starch. Then cool down to 60°C, add 10g glycidyl methacrylate, 1g ammonium persulfate and 2g Tween 80, stir and heat up to 90°C, react for 2h; then cool down to 60°C, add 5g acrylic acid, 0.5g ammonium persulfate and 1g of Tween 80, and stirring to raise the temperature to 90°C, react for 2h, and finally cool down to room temperature, and filter to obtain the hydrophobic starch-based nano-bio-emulsion.

Embodiment 2

[0032] This example provides a hydrophobic starch-based nano-bio-emulsion and a preparation method thereof.

[0033] A kind of hydrophobic starch-based nano bio-emulsion, comprising following raw materials:

[0034]

[0035] The preparation method of the above-mentioned hydrophobic starch-based nano-biological latex: in a 500mL four-necked flask equipped with a stirrer, a thermometer, and a condenser tube, add 100g of absolute dry esterified cornstarch, 120g of water and 7g of polyethylene glycol, Stir under protection, raise the temperature to 85°C, and react at this temperature for 0.5h to fully gelatinize the starch. Then cool down to 60°C, add 20g cyclohexyl methacrylate, 2g potassium persulfate and 4g NP-10, stir and heat up to 90°C, react for 2h; then cool down to 60°C, add 5g methacrylic acid, 0.5g persulfate Potassium sulfate and 1g NP-10, stirred and heated up to 90°C, reacted for 2h, finally lowered to room temperature, filtered, and obtained hydrophobic starch-b...

Embodiment 3

[0037] This example provides a hydrophobic starch-based nano-bio-emulsion and a preparation method thereof.

[0038] A kind of hydrophobic starch-based nano bio-emulsion, comprising following raw materials:

[0039]

[0040] The preparation method of the above-mentioned hydrophobic starch-based nano-biological latex: in a 500mL four-neck flask equipped with a stirrer, a thermometer, and a condenser tube, add 100g of absolute dry tapioca starch, 110g of water and 3g of propylene glycol, stir under nitrogen protection, and heat up To 85°C, react for 0.5h to fully gelatinize the starch. Then cool down to 70°C, add 10g of isobornyl methacrylate, 1g of sodium persulfate and 2g of sodium dodecylsulfonate, stir and heat up to 90°C, react for 2.5h; then cool down to 60°C, add 5g of Acid, 0.5g sodium persulfate and 1g sodium dodecylsulfonate, and stirred to heat up to 100 ℃, reaction 2h. Finally, the temperature is lowered to normal temperature and filtered to obtain hydrophobic s...

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Abstract

The invention belongs to the technical field of papermaking light industry and particularly relates to a hydrophobic starch-based nano biological latex as well as a preparation method and an application thereof. The hydrophobic starch-based nano biological latex is prepared from the following raw materials in parts by weight: 20-100 parts of starch or starch derivatives, 2-50 parts of hydrophobicannular acrylate monomers, 2-50 parts of carboxylic acrylate monomers, 0.1-10 parts of an emulsifying agent, 0.1-10 parts of an initiator, 0.5-10 parts of a plasticizer and 20-200 parts of water. According to the method, a hydrophobic monomer are introduced into the starch, so that the water resistance of the biological latex is improved. The hydrophobic monomer has an annular structure and multiple alkyls and can better isolate hydroxy in the starch. In addition, by virtue of adding the plasticizer, the obtained biological latex has the characteristics of high solid content and low viscosityand is beneficial to a coating process. Compared with a traditional bio-surfactant latex, the biological latex prepared by the method has excellent gluing effect and can partially or completely substitute for petroleum-base butadiene-styrene latex in the paper manufacturing industry field.

Description

technical field [0001] The invention belongs to the technical field of papermaking light industry, and specifically relates to a hydrophobic starch-based nano-biological latex and its preparation method and application. Background technique [0002] In recent years, the depletion of petroleum resources has led to rising prices of products made of petroleum products. In addition, petroleum products will cause environmental pollution. Therefore, in many petroleum product industries, especially in the paper industry, more and more companies are committed to In pursuit of low-cost, renewable and pollution-free environmentally friendly adhesive raw materials to replace traditional petroleum cracking products, such as petroleum-based latex synthesized from butadiene and styrene as the main monomers. Starch is a very abundant organic compound in nature. It has a wide range of sources, low price, degradable, renewable and other remarkable characteristics. After relevant denaturation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F251/00C08F220/32C08F220/06C08F220/18C08F222/02D21H19/20
CPCD21H19/20C08F251/00C08F220/1806C08F220/1811C08F220/325
Inventor 胡继文郭玉玥林树东
Owner NANXIONG MATERIAL PRODION BASE OF CHINESE ACADEMY OF SCI GUANGZHOU CHEM
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