Tea polyphenol-acrylic acid series super absorbent resin and preparation method thereof

A super absorbent resin, acrylic technology, applied in the field of resin materials, can solve problems such as easy breeding of bacteria and lack of antibacterial properties, and achieve the effects of excellent water absorption, less residual monomers, and low production costs

Active Publication Date: 2014-02-19
HUAZHONG AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the conventional superabsorbent resin does not have antibacterial properties, and the resin is mostly used in a warm and humid environment, which is very easy to breed bacteria. Therefore, the antibacterial functional modification of superabsorbent resin is of great significance for its application in the field of medical and health care.

Method used

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  • Tea polyphenol-acrylic acid series super absorbent resin and preparation method thereof
  • Tea polyphenol-acrylic acid series super absorbent resin and preparation method thereof
  • Tea polyphenol-acrylic acid series super absorbent resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Accurately weigh 25.00g of NaOH and 100mL of distilled water to prepare a 25% NaOH solution, and neutralize it with 50g of acrylic acid in an ice-water bath and stirring. Weigh 0.01g of N,N'-methylenebisacrylamide, dissolve it in 20mL of distilled water to make an aqueous solution, add 20mL of N,N'-methylenebisacrylamide to the neutralized acrylic acid and its sodium salt solution aqueous solution, stirred for 5min, then added 0.07g K 2 S 2 o 8 Initiator, stirred until completely dissolved. Then add 10 mL of an aqueous solution in which 0.035 g of tea polyphenols is dissolved in the reaction system, stir and mix. The obtained mixed solution is placed in an oven, polymerized at 80°C for 2 hours, and the obtained transparent gel is cooled, sheared, and dried to obtain a granular superabsorbent resin with a water absorption rate of more than 950 times.

Embodiment 2

[0029] Accurately weigh 25.00g of NaOH and 100mL of distilled water to prepare a 25% NaOH solution, and neutralize it with 50g of acrylic acid in an ice-water bath and stirring. Weigh 0.025g of N,N'-methylenebisacrylamide, dissolve it in 30mL of distilled water to make an aqueous solution, add 30mL of N,N'-methylenebisacrylamide to the neutralized acrylic acid and its sodium salt aqueous solution aqueous solution, stirred for 10min, and then added 0.05g K 2 S 2 o 8 Initiator, stirred until completely dissolved. Then add 0.05 g of tea polyphenol powder into the reaction system, and stir until it dissolves. The obtained mixed solution is placed in an oven, and the gel is polymerized at 60°C for 5 hours. The obtained transparent gel is cooled, sheared, and dried to obtain a granular superabsorbent resin with a water absorption rate of more than 900 times.

Embodiment 3

[0031] Accurately weigh 25.00g of NaOH, measure 100mL of distilled water, prepare a 25% NaOH solution, and neutralize it with 50g of acrylic acid in an ice-water bath and stirring conditions. Weigh 0.05g N,N'-methylenebisacrylamide, dissolve it in 50mL distilled water to make an aqueous solution, add 50mL N,N'-methylenebisacrylamide to the solution of neutralized acrylic acid and its sodium salt aqueous solution, stirred for 5min, and then added 0.03g K 2 S 2 o 8 Initiator, stirred until completely dissolved. Then add 10 mL of an aqueous solution in which 0.025 g of tea polyphenols is dissolved in the reaction system, stir and mix. The obtained mixed solution is placed in an oven, and the gel is polymerized at 70°C for 3.5 hours. The obtained transparent gel is cooled, sheared, and dried to obtain a granular superabsorbent resin with a water absorption rate of more than 860 times.

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Abstract

The invention discloses a tea polyphenol-acrylic acid series super absorbent resin. Acrylic acid is neutralized with a NaOH solution firstly; then N,N'-methylene bisacrylamide is taken as a cross-linking agent, potassium persulfate is taken as an initiator, and the mixture has a polymerization reaction with tea polyphenols in water; and gel obtained after the reaction is cooled, cut and dried, so that the tea polyphenol-acrylic acid series super absorbent resin is formed. The tea polyphenol-acrylic acid series super absorbent resin is a brownish yellow particle, has few residual monomers and no visible impurities, has sufficient gel strength, and has excellent water absorption, water retention and antibacterial properties; the water absorption rate can reach more than 950 times; and the tea polyphenol-acrylic acid series super absorbent resin is applicable to hygiene care supplies such as baby diapers, women's sanitary towels and the like. A preparation method of the tea polyphenol-acrylic acid series super absorbent resin is simple, raw material resources are extensive, the production cost is low, the production efficiency is high, and the resin has remarkable advantages.

Description

technical field [0001] The invention belongs to the field of resin materials, and in particular relates to a tea polyphenol-acrylic acid superabsorbent resin and a preparation method thereof. Background technique [0002] Super Absorbent Resin (SAR for short) is a new type of functional polymer material widely researched and developed at home and abroad in recent years. high molecular weight polymer. Superabsorbent resin has excellent water absorption and water retention capacity, and can absorb water hundreds or even thousands of times its own weight, and the gel after water absorption has extremely strong water retention capacity, and has been widely used in health care products, agriculture, forestry and gardening Soil amendments, food preservation materials, textiles, etc. However, the conventional superabsorbent resin does not have antibacterial properties, and the resin is mostly used in a warm and humid environment, which is very easy to breed bacteria. Therefore, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/06C08F222/38C08F8/14
Inventor 杨晓萍丰珂珏苏维张继权张丹丹
Owner HUAZHONG AGRI UNIV
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