Hydrophobically associated hydrogels based on acrylamide and anionic surface active monomer with high mechanical strength

	Hydrophobically associated hydrogels based on acrylamide and anionic surface active monomer with high mechanical strength
	Li WB ; An HY ; Tan Y ; Lu CG ; Liu C ; Li PC ; Xu K ; Wang PX
刊名	soft matter
	2012
卷号	8 期号:18 页码:5078-5086
关键词	TRIBLOCK COPOLYMER GELS NETWORK STRUCTURE MODIFIED POLYELECTROLYTES NANOCOMPOSITE HYDROGELS SWELLING PROPERTIES PHASE-BEHAVIOR CROSS-LINKING PH SENSORS POLYACRYLAMIDE DEGRADATION
ISSN号	1744-683x
通讯作者	tan y
中文摘要	in this work, a physically cross-linked hydrogel (ha gels) with high mechanical strength is synthesized via micellar copolymerization of acrylamide (aam) and an anionic surface active monomer (surfmer), sodium 9 or 10-acrylamidostearic acid (naaas) without any adscititious surfactant or chemical cross-linkers. sem and dls characterizations indicate that the surfmer formed multi-micellar aggregates with 80-90 nm diameters above its critical micelle concentration, and serve as a crosslinked-center to endow the obtained hydrogel a robust three-dimensional architecture. compared with the chemically cross-linked hydrogel, ha gels exhibit unusual swelling-deswelling behavior in water and a pulsatile swelling-deswelling behavior is exhibited with alternating ph changes from 5 to 10 because the presence of carboxyl in the surfmer, demonstrating a smart characteristic of the hydrogel. moreover, the presence of the surfmer greatly improve the mechanical properties of ha gels. a hydrogel containing 20% (mol/mol) surfmer shows a compression strength of 22.50 mpa at a strain of 90% and can be elongated to 13 times its original length. furthermore, the ha gels show a significant hysteresis recovery after large deformation, underlying a serious energy-dissipation mechanism. this uncommon swelling behavior and mechanical properties of the ha gels result from its special characteristic of cross-linked units. a self-healing ability is expected for this physical hydrogel in future applications in biotechnology.
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000302636700030
公开日期	2013-06-30
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/48595]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Li WB,An HY,Tan Y,et al. Hydrophobically associated hydrogels based on acrylamide and anionic surface active monomer with high mechanical strength[J]. soft matter,2012,8(18):5078-5086.
APA	Li WB.,An HY.,Tan Y.,Lu CG.,Liu C.,...&Wang PX.(2012).Hydrophobically associated hydrogels based on acrylamide and anionic surface active monomer with high mechanical strength.soft matter,8(18),5078-5086.
MLA	Li WB,et al."Hydrophobically associated hydrogels based on acrylamide and anionic surface active monomer with high mechanical strength".soft matter 8.18(2012):5078-5086.