期刊
KOREAN JOURNAL OF CHEMICAL ENGINEERING
卷 32, 期 7, 页码 1434-1439出版社
KOREAN INSTITUTE CHEMICAL ENGINEERS
DOI: 10.1007/s11814-014-0313-y
关键词
Hydrogel; Nanocomposite; Hectorite; Microemulsion Polymerization
资金
- PetroChina Innovation Foundation, China [2012D-5006-0212]
- Sichuan Provincial Science & Technology Pillar Program, China [2013GZ0149, 2014GZX0010]
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, China [SKLGP2012K004]
- Sichuan youth science and technology innovation research team funding scheme, China [2013TD0005]
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.
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