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A kind of preparation method of graft-modified β-cyclodextrin aromatic finishing agent

A kind of aromatic finishing agent, graft modification technology, applied in the direction of fiber treatment, textile and papermaking, plant fiber, etc., can solve the problem that β-cyclodextrin has no reactivity with fabric, β-cyclodextrin aromatic finishing agent retains fragrance Short time and other problems, to achieve good fragrance retention and enhance water solubility

Active Publication Date: 2016-07-13
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a preparation method of a grafted modified β-cyclodextrin aromatic finishing agent, which solves the problems of no reactivity between β-cyclodextrin and fabrics and short fragrance retention time of the β-cyclodextrin aromatic finishing agent. question

Method used

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  • A kind of preparation method of graft-modified β-cyclodextrin aromatic finishing agent

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preparation example Construction

[0021] A kind of preparation method of graft modified β-cyclodextrin fragrance finishing agent of the present invention, specifically comprises the following steps:

[0022] Step 1: Add β-cyclodextrin, acrylic acid and distilled water into the reactor according to the mass ratio of 1:0.2~1.4:4, mix evenly at 40~80℃, and then add dropwise at a concentration of 0.010mol within 20~30min / L~0.030mol / L potassium persulfate aqueous solution, the mass ratio of potassium persulfate to β-cyclodextrin is 1:20~40; after the dropwise addition, keep it warm for 40~150min, and purify the obtained product with absolute ethanol , after the precipitate is filtered, it is fully washed with acetone and dried in a vacuum oven at 45-50°C for 24-48 hours to obtain a β-cyclodextrin-g-polyacrylic acid graft polymer with a grafting rate of 7.301%-15.601%. ;

[0023] Step 2: Add the β-cyclodextrin-g-polyacrylic acid graft polymer obtained in step 1 and distilled water into the reactor according to the...

Embodiment 1

[0028] Add β-cyclodextrin, acrylic acid and distilled water in a mass ratio of 1:0.8:4 into a three-necked flask equipped with a stirrer, a condenser, and a feeding device, heat up to 40°C and mix evenly, and add dropwise within 30 minutes The concentration of potassium persulfate aqueous solution is 0.025mol / L, the mass ratio of potassium persulfate to β-cyclodextrin is 1:20, after the potassium persulfate aqueous solution is added dropwise, keep warm for 120min. After the reaction, precipitate and purify 3 times with absolute ethanol, then wash the precipitate fully with acetone, and dry the product in a vacuum oven at 50°C for 24 hours to obtain β-cyclodextrin-g-polyethylene with a grafting rate of 15.601%. Acrylic graft polymer;

[0029] Add the β-cyclodextrin-g-polyacrylic acid graft polymer and distilled water obtained in step 1 into a three-necked flask equipped with a stirrer, a condenser, and a feeding device according to a mass ratio of 1:11, dissolve at 50°C, and th...

Embodiment 2

[0031] Add β-cyclodextrin, acrylic acid and distilled water in a mass ratio of 1:0.8:4 into a three-necked flask equipped with a stirrer, a condenser, and a feeding device, heat up to 60°C and mix evenly, and add dropwise within 30 minutes The potassium persulfate aqueous solution with a concentration of 0.025mol / L was added, and the mass ratio of potassium persulfate to β-cyclodextrin was 1:20. After the potassium persulfate aqueous solution was added dropwise, the reaction was incubated for 40 minutes. After the reaction, precipitate and purify with absolute ethanol three times, then wash the precipitate fully with acetone, and dry the product in a vacuum oven at 45°C for 48 hours to obtain β-cyclodextrin-g-polyethylene with a grafting rate of 14.597%. Acrylic graft polymer;

[0032]Add the β-cyclodextrin-g-polyacrylic acid graft polymer and distilled water obtained in step 1 into a three-necked flask equipped with a stirrer, a condenser, and a feeding device according to a ...

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Abstract

The invention discloses a preparation method of a grafted modified β-cyclodextrin aromatic finishing agent. First, acrylic acid is used to graft and modify β-cyclodextrin to obtain β-cyclodextrin-g-polyacrylic acid grafted polymer, and then drop the essence solution into the β-cyclodextrin-g-polyacrylic acid graft polymer solution to react to obtain the grafted modified β-cyclodextrin aroma finishing agent. The invention discloses a method for preparing a grafted modified β-cyclodextrin aromatic finishing agent, which involves grafting and modifying β-cyclodextrin and acrylic acid, and carrying polycarboxylic acid on the β-cyclodextrin after grafting and modifying the acrylic acid Acid, which can undergo esterification reaction with the hydroxyl group in cellulose on cotton fabrics, thereby cross-linking cyclodextrin to cellulose fibers, improving the shortcoming of fragrance retention time on fabrics, achieving a slow release effect, and solving the problem of β ‑Cyclodextrin has no reactivity with fabrics, and β‑cyclodextrin aromatic finishing agent has a short fragrance retention time, which achieves a better fragrance retention effect.

Description

technical field [0001] The invention belongs to the technical field of preparation of dyeing and finishing auxiliaries, and in particular relates to a preparation method of a grafted modified β-cyclodextrin aroma finishing agent. Background technique [0002] In recent years, with the advancement of science and the improvement of people's living standards, more and more people began to advocate a natural and healthy lifestyle, people paid more attention to health, and reports on cyclodextrins gradually increased. Many aromatics have sedative, bactericidal, therapeutic and health care effects. There is a special aromalogy abroad to use a strict scientific method to study and explain the relationship between aroma and psychology. [0003] The early aroma finishing mainly adopts the method of adsorption, that is, putting textiles and scented plants together to make the aroma volatilize and penetrate into the pores of the fibers, or directly impregnate with a solution containin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M23/12D06M15/21C08F251/00C08F220/06D06M101/06
Inventor 周建华贺仁妍马建中王海龙褚苗
Owner SHAANXI UNIV OF SCI & TECH
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