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
收藏
页码：1434 / 1439
页数：6
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