Influence of crosslinker amount on swelling and gel properties of hectorite/poly(acrylamide/itaconic acid) nanocomposite hydrogels

被引：6

作者：

Wan, Tao ^{[1
,2
]}

Cheng, Wenzhong ^{[1
]}

Zhou, Zhiling ^{[1
]}

Xu, Min ^{[1
]}

Zou, Chuzhang ^{[1
]}

Li, Ruixiang ^{[1
]}

机构：

[1] Chengdu Univ Technol, Sichuan Higher Educ Inst, Mineral Resources Chem Key Lab, Chengdu 610059, Sichuan, Peoples R China

[2] Chengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm Pro, Chengdu 610059, Sichuan, Peoples R China

来源：

KOREAN JOURNAL OF CHEMICAL ENGINEERING | 2015年 / 32卷 / 07期

关键词：

Hydrogel; Nanocomposite; Hectorite; Microemulsion Polymerization; WATER SUPERABSORBENT; MECHANICAL-PROPERTIES; CLAY;

D O I：

10.1007/s11814-014-0313-y

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A new hectorite/poly(acrylamide/itaconic acid) nanocomposite hydrogel was synthesized by inverse microemulsion polymerization. The effects of crosslinker amount on water absorbency and salt absorbency, swellability, pH-sensitivity, gel strength, temperature-and shear-resistance were investigated. Water and salt absorbencies, pH-sensitivity and swellability decreased, while gel strength and temperature-and shear-resistance increased with increasing crosslinker amount. Nanocomposite hydrogels had good thermal stability with onset decomposing temperature of 252 A degrees C. The as-synthesized hydrogel particles were regular and spherical-like and had an average particle size of 43 nm in the range of 30-65 nm. Hectorite clay platelets were exfoliated and transformed into amorphous structure.

引用

页码：1434 / 1439

页数：6

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