THE EFFECT OF CROSSLINKERS ON SUPERABSORBENTS

SUN Minwei; ZHANG Jian; GAO Yanfang; XIE Xuming

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THE EFFECT OF CROSSLINKERS ON SUPERABSORBENTS

Research Article | 更新时间：2021-03-19

- THE EFFECT OF CROSSLINKERS ON SUPERABSORBENTS
- Acta Polymerica Sinica Issue 4, Pages: 595-599(2004)
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- Published：20 August 2004，
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SUN Minwei, ZHANG Jian, GAO Yanfang, XIE Xuming. THE EFFECT OF CROSSLINKERS ON SUPERABSORBENTS. [J]. Acta Polymerica Sinica (4):595-599(2004)
DOI：

SUN Minwei, ZHANG Jian, GAO Yanfang, XIE Xuming. THE EFFECT OF CROSSLINKERS ON SUPERABSORBENTS. [J]. Acta Polymerica Sinica (4):595-599(2004) DOI：

摘要

通过丙烯酰氯对聚乙二醇的封端反应合成了一系列分子量不同、结构类似的交联剂——聚乙二醇二丙烯酸酯 (PEGDA)

并用于聚丙烯酸高吸水性树脂的制备 .运用FTIR对PEGDA进行了分析 .吸水性能实验结果表明

交联剂的分子量越大

则高吸水性树脂的吸水倍率越高

吸水速率越大

而相对吸水速率降低 .同时

PEGDA与常用的交联剂N

N′-亚甲基双丙烯酰胺 (MBA)相比

前者制备的高吸水性树脂的吸水倍率远高于后者 ;线型可溶性聚合物及残留单体的含量

前者也低于后者.

Abstract

A series of crosslinkers(polyethylene glycol diacrylate

PEGDA) with different molecular weights were synthesized through end-capping of PEG by acryloyl chloride．The structures of the PEGDAs were characterized by FTIR．The water-absorbency of sodium polyacrylate crosslinked with PEGDAs was determined. In the experiments of water-swelling in deionized water

it was revealed that when the molecular weight of the crosslinker increased

the maximum of equilibrium water-absorbability of the synthesized superabsorbents was enhanced and the rate of water-swelling increased too

but the relative rate of water-swelling decreased．The relationship between the network structure of the superabsorbents and the water-absorbency was also discussed．Comparing PEGDA and MBA

the superabsorbents crosslinked with the former had much stronger water-absorbability

fewer residual monomers and less dissoluble linear polymers than the one crosslinked with the latter．

关键词

聚乙二醇二丙烯酸酯高吸水性树脂聚丙烯酸交联剂吸水倍率

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