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Method for preparing environmental protective ecological type surface active agent based on starch

A surfactant and starch-based technology, applied in the field of preparation of starch-based surfactants, can solve problems such as product separation, purification difficulties, high product prices, complex products, etc., and achieve good surface activity, wide application, and wide application foreground effect

Inactive Publication Date: 2009-01-21
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problem of the commonly used starch-based surfactants based on starch alkyl glycosides is that the product is complex, and the separation, purification and refining of the product are difficult, and the purification and refining lead to a higher price of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] Example 1: First, 30 grams of cornstarch, 270 grams of deionized water and 0.3 grams of α-amylase were mixed and heated to 50° C., and kept for 1.5 hours for degradation reaction to obtain a degraded starch solution; then the degraded starch solution was heated to At 70°C, add 60 grams of vinyl monomer mixture solution consisting of 15 grams of butyl acrylate, 15 grams of acrylic acid and 30 grams of polyethylene glycol monoacrylate dropwise, and add dropwise an aqueous ammonium persulfate solution with a mass fraction of 10%. 50 grams, control the dropping time to be 40 minutes, continue the heat preservation reaction for 1 hour after the feeding is completed, and add a mass fraction of 30% sodium hydroxide solution to adjust the pH of the system to 6.5.

Embodiment 2

[0009] Example 2: First, 30 grams of cornstarch, 270 grams of deionized water and 0.3 grams of α-amylase were mixed and heated to 51° C., and kept for 1.4 hours for degradation reaction to obtain a degraded starch solution; then the degraded starch solution was heated to At 72°C, add 60 grams of vinyl monomer mixture solution consisting of 15 grams of butyl acrylate, 15 grams of acrylic acid and 30 grams of polyethylene glycol monoacrylate dropwise, and add dropwise an aqueous ammonium persulfate solution with a mass fraction of 10%. 50 grams, the control dropwise addition time is 52 minutes, and after the addition of the feed, continue the insulation reaction for 1.3 hours, then add a mass fraction of 30% sodium hydroxide solution to adjust the pH value of the system to 6.8.

Embodiment 3

[0010] Example 3: First, 30 grams of cornstarch, 270 grams of deionized water and 0.3 grams of α-amylase were mixed and heated to 52 ° C, and the degradation reaction was carried out at an insulation temperature of 1.3 hours to obtain a degraded starch solution; then the degraded starch solution was heated to At 74°C, add 60 grams of vinyl monomer mixture solution consisting of 15 grams of butyl acrylate, 15 grams of acrylic acid and 30 grams of polyethylene glycol monoacrylate dropwise, and add dropwise an aqueous ammonium persulfate solution with a mass fraction of 10%. 50 grams, the control dropwise addition time is 44 minutes, and after the addition of the feed, continue the insulation reaction for 1.5 hours, then add a mass fraction of 30% sodium hydroxide solution to adjust the pH value of the system to 6.6.

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PUM

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Abstract

The invention relates to a preparation method of a starch base environmental protection ecotype surface active agent. It uses enzyme to depredate the corn flour in water, then carries on copolymerization with crylic acid, butyl acrylate, and carbowax macrogol polyethylene glycol polyglycol single acrylic ester under the initiator action. Obtain starch base environmental protection ecotype surface active agent by adjusting pH value of sodium hydroxide solution. The invention carries on copolymerization with crylic acid, butyl acrylate and starch. Introduce lipophilic butyl ester, the water affinity carboxyl group and certain length polyglycol ether segment to obtain both lipophilic and water affinity structure. The starch base surface active agent obtained is mixed type surface active agent including anion and the non-ionic, which can be used in papermaking, textile printing, and leather processing and so on. The invention has particular preparation techniques. The starch base surface active agent obtained has good dispersion performance and emulsibility, which can be depredated pollution-freely and has environmental protection characteristic.

Description

technical field [0001] The invention relates to a preparation method of a polymer surfactant, in particular to a preparation method of a starch-based surfactant. Background technique [0002] Surfactant is a kind of chemical auxiliary commonly used in industrial and agricultural production and daily life. The extensive use of surfactants has caused a lot of environmental and water pollution. Therefore, in recent years, environmentally friendly surfactants have become a research hotspot. Environmentally friendly surfactants have great market demand and economic benefits. Starch-based surfactants are a class of biodegradable and environmentally friendly surfactants. In addition to good surface activity, they also have the characteristics of mild performance and low irritation. Therefore, they can be widely used in detergents, cosmetics, etc. , oral hygiene products and other daily consumer products (Shi Yuyu, Su Yi, Review of Synthesis Methods of Green Surfactant Alkyl Glycos...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01F17/52C09K23/52
Inventor 吕生华刘岗
Owner SHAANXI UNIV OF SCI & TECH
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