A novel fabrication method of temperature-responsive poly(acrylamide) composite hydrogel with high mechanical strength

	A novel fabrication method of temperature-responsive poly(acrylamide) composite hydrogel with high mechanical strength
	Li PC ; Xu K ; Tan Y ; Lu CG ; Li YL ; Wang PX
刊名	polymer
	2013
卷号	54 期号:21 页码:5830-5838
关键词	CLAY NANOCOMPOSITE HYDROGELS DOUBLE-NETWORK HYDROGELS POLY(N-ISOPROPYLACRYLAMIDE) HYDROGELS SWELLING PROPERTIES HYBRID HYDROGELS BEHAVIOR GELS NANOSPHERES KINETICS
ISSN号	0032-3861
通讯作者	xu k
中文摘要	high strength, stimuli-responsive poly(acrylamide) composite hydrogels (paam ch gels) were prepared by grafting polymerization of acrylamide (aam) onto temperature-sensitive core-shell microgels. these microgels, composing of poly(n-isopropylacrylamide) as core and polyvinylamine (pvam) as shell, were used as both initiator and crosslinker to form a robust three-dimensional network via bonding the poly(acrylamide) (paam) backbone. the ch gels exhibited a remarkably rapid shrinking rate and transmittance switch in response to the environmental temperature change, which the conventional chemically cross-linking paam hydrogels (paam or) were short of. even compared to the bulk pnipaam hydrogels (pnipaam or) crosslinked with n,n'-methylenebisaciylamide (mba), the ch gels were featured with faster responsive rate, which could be attributed to the formation of interconnected water transportation channels between the microspheres and paam gel matrix due to the fast shrinking of microgels. moreover, the effects of microgel species and content on swelling and mechanical properties of ch gels were also systematically investigated. the results elaborated that the ch gels could be compressed almost 99% without breaking and completely recovered their original shape when the stress was removed. and the optimized compressive strength of ch gels could be up to 21.94 mpa. based on the analysis of ch gel mechanical properties, the influence of microsphere content on effective network chains density of ch gels was discussed through rheology measurements. finally, the essential reinforcement on mechanical properties was mainly contributed to the homogeneous microstructure of hydrogel network and the energy dissipation mechanism of microgels in gel matrix. (c) 2013 elsevier ltd. all rights reserved.
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000326204200046
公开日期	2014-04-15
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/49550]
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 PC,Xu K,Tan Y,et al. A novel fabrication method of temperature-responsive poly(acrylamide) composite hydrogel with high mechanical strength[J]. polymer,2013,54(21):5830-5838.
APA	Li PC,Xu K,Tan Y,Lu CG,Li YL,&Wang PX.(2013).A novel fabrication method of temperature-responsive poly(acrylamide) composite hydrogel with high mechanical strength.polymer,54(21),5830-5838.
MLA	Li PC,et al."A novel fabrication method of temperature-responsive poly(acrylamide) composite hydrogel with high mechanical strength".polymer 54.21(2013):5830-5838.