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Preparation method of cellulose-based super absorbent resin having yellowing inhibiting function

A technology of water-absorbent resin and cellulose, which is applied in the field of biomass material preparation, can solve unseen problems, achieve the effects of inhibiting yellowing, prolonging storage time and performance, important applications and economic value

Inactive Publication Date: 2014-04-30
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Up to now, there has been no related technology to use textile waste as a cellulose source to prepare cellulose-based superabsorbent resin with the function of inhibiting yellowing.

Method used

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  • Preparation method of cellulose-based super absorbent resin having yellowing inhibiting function

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 1) Add the waste cotton yarn into the mixed solution of sodium hydroxide and urea that was precooled at 4°C for 30 min. The concentration of sodium hydroxide is 6 wt%, the concentration of urea is 14 wt%, and the mass ratio of waste cotton yarn to waste cotton yarn is 20:1, and stir evenly , freeze at -20°C for 1 h, and mechanically stir to obtain a uniform and transparent waste cotton yarn cellulose solution;

[0017] 2) The waste cotton yarn cellulose solution obtained in step 1) was passed through nitrogen for 20 min, and an initiator was added at 40 °C for 10 min, and the mass ratio of ammonium persulfate to waste cotton yarn was 0.4:1. Add a stabilizer, the mass ratio of 2,6-di-tert-butyl-4-methylphenol to waste cotton yarn is 0.005:1, the mass ratio of ultraviolet absorber UV-9 to waste cotton yarn is 0.001:1, and the mass ratio of acrylamide to waste cotton yarn The ratio is 1:1; the mass ratio of acrylic acid to waste cotton yarn is 1:1, and the mass ratio of so...

Embodiment 2

[0019] 1) Add cotton linters to a mixed solution of sodium hydroxide and urea that was precooled at 4°C for 30 min. The concentration of sodium hydroxide was 6 wt%, the concentration of urea was 14 wt%, and the mass ratio of cotton linters was 30:1. Stir evenly, freeze at -20°C for 2 h, and stir mechanically to obtain a uniform and transparent linter cellulose solution;

[0020] 2) The cotton linter cellulose solution obtained in step 1) was passed through nitrogen for 20 minutes, and an initiator was added at 50°C for 15 minutes of initiation. The mass ratio of ammonium persulfate to cotton linters was 0.3:1. Add a stabilizer, the mass ratio of 2,6-di-tert-butyl-4-methylphenol to cotton linters is 0.02:1, the mass ratio of ultraviolet absorber UV-9 to cotton linters is 0.005:1, and the mass ratio of acrylamide to cotton linters The mass ratio of linters is 2:1; the mass ratio of acrylic acid to cotton linters is 3:1, the mass ratio of sodium hydroxide to acrylic acid is neutr...

Embodiment 3

[0022] 1) Add cotton linters to the mixed solution of sodium hydroxide and urea precooled at 4°C for 30 min. The concentration of sodium hydroxide is 6 wt%, the concentration of urea is 14 wt%, and the mass ratio of cotton linters is 40:1. Stir evenly, freeze at -20°C for 1.5 h, and mechanically stir to obtain a uniform and transparent linter cellulose solution;

[0023] 2) The cotton linter cellulose solution obtained in step 1) was passed through nitrogen for 20 min, and an initiator was added at 60 °C for 5 min, and the mass ratio of ammonium persulfate to cotton linters was 0.5:1. Add a stabilizer, the mass ratio of 2,6-di-tert-butyl-4-methylphenol to cotton linters is 0.05:1, the mass ratio of ultraviolet absorber UV-9 to cotton linters is 0.01:1, and the mass ratio of acrylamide to cotton linters The mass ratio of linters is 3:1; the mass ratio of acrylic acid to cotton linters is 6:1, the mass ratio of sodium hydroxide to acrylic acid is neutralized with sodium hydroxid...

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Abstract

The invention discloses a preparation method of cellulose-based super absorbent resin having a yellowing inhibiting function. The method is characterized by comprising the following steps: fully dissolving textile waste; adding an initiator and a stabilizer; grafting and copolymerizing with a propenyl monomer to prepare to cellulose-based super absorbent resin having the yellowing inhibiting function. The method is easy, rapid and efficient, and is particularly suitable for preparing the cellulose-base super absorbent resin by using the textile waste. A stabilizer is added during preparation of the cellulose-base super absorbent resin from the textile waste, so that the cellulose-base super absorbent resin has the yellowing inhibiting function, the storage time of the cellulose-based super absorbent resin made of the textile waste is prolonged, and the application performance is improved. The cellulose-based super absorbent resin is suitable for storing for a long time, is attractive and practical, and has important application and economic values.

Description

technical field [0001] The invention relates to a preparation method of a cellulose-based superabsorbent resin, in particular to a preparation method of a cellulose-based superabsorbent resin with the function of inhibiting yellowing, and belongs to the technical field of biomass material preparation. Background technique [0002] Superabsorbent resin is a new type of functional material, which can absorb and retain hundreds to thousands of times its own mass of water. It has high water absorption and high water retention characteristics, and can still have good water retention performance under pressure. Because of its repeated water absorption capacity of water absorption-release-reabsorption and safe and non-toxic performance, it has been widely used in physiological hygiene, medical treatment and food packaging in recent years, and plays an important role in the national economy and people's daily life. Role. [0003] In order to respond to the requirements of national ...

Claims

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Application Information

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IPC IPC(8): C08F251/02
Inventor 姚菊明俞叶丽刘虹奕张勇
Owner ZHEJIANG SCI-TECH UNIV
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