Stabilization, Aggregation, and Gelation of Microsphere Induced by Thermosensitive Microgel

doi:10.1021/ma301747s

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	Stabilization, Aggregation, and Gelation of Microsphere Induced by Thermosensitive Microgel
	Zhao, Chuanzhuang; Yuan, Guangcui; Han, Charles C.
刊名	MACROMOLECULES
	2012-12-11
卷号	45 期号:23 页码:9468-9474
ISSN号	0024-9297
DOI	10.1021/ma301747s
英文摘要	Poly(N-isopropylacrylamide) (PNIPAM) microgels are adsorbable to the surface of polystyrene (PS) microspheres in the experimental temperature range (25-40 degrees C) and can induce aggregation of microspheres through the bridging mechanism. The bridging mechanism proceeds in two elementary steps: the first is an adsorption (negligible desorption relatively) of free microgel to one microsphere surface, and the next is a reversible connection of the adsorbed microgel to another microsphere surface. The surface coverage is found as an important factor in triggering the stabilization, aggregation, and gelation of the mixtures. And most importantly, the nonnegligible dynamic disconnection of a bridge is the essential prerequisite for structure or state transition. For mixtures with the same concentration of microsphere, depending on the concentration of microgel, various transitions can be induced by changing temperature, including the transition from a weaker gel and from a depletion gel to a bridging gel. gel to a stronger gel, from a fluid to a bridging
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000312122600027
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/49229]
专题	中国科学院化学研究所
通讯作者	Yuan, Guangcui
作者单位	Chinese Acad Sci, State Key Lab Polymer Phys & Chem, Joint Lab Polymer Sci & Mat, Beijing Natl Lab Mol Sci,Inst Chem, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Chuanzhuang,Yuan, Guangcui,Han, Charles C.. Stabilization, Aggregation, and Gelation of Microsphere Induced by Thermosensitive Microgel[J]. MACROMOLECULES,2012,45(23):9468-9474.
APA	Zhao, Chuanzhuang,Yuan, Guangcui,&Han, Charles C..(2012).Stabilization, Aggregation, and Gelation of Microsphere Induced by Thermosensitive Microgel.MACROMOLECULES,45(23),9468-9474.
MLA	Zhao, Chuanzhuang,et al."Stabilization, Aggregation, and Gelation of Microsphere Induced by Thermosensitive Microgel".MACROMOLECULES 45.23(2012):9468-9474.