Composition Effect on Interplay between Phase Separation and Dewetting in PMMA/SAN Blend Ultrathin Films

	Composition Effect on Interplay between Phase Separation and Dewetting in PMMA/SAN Blend Ultrathin Films
	You JC ; Liao YG ; Men YF ; Shi TF ; An LJ ; Li XH
刊名	macromolecules
	2011
卷号	44 期号:13 页码:5318-5325
关键词	THIN LIQUID-FILMS X-RAY-SCATTERING POLYMER-BLEND SPINODAL DECOMPOSITION POLY(METHYL METHACRYLATE) PATTERN-FORMATION SURFACE POLYDISPERSITY DISPERSIONS CONFINEMENT
ISSN号	0024-9297
通讯作者	shi tf
中文摘要	using in situ atomic force microscopy (afm) and grazing incidence ultrasmall-angle x-ray scattering (giusax), the composition dependence of phase separation, dewetting, and interplay between them in blend [poly(methyl methacrylate) (pmma) and poly(styrene-ran-acrylonitrile) (san)] ultrathin films (similar to 1r(g), radius of gyration) on silicon oxide substrate was investigated. it was found that phase behaviors depended crucially on the composition in blend. first, dewetting morphologies in san50 and san70 were still under the control of u(q0)/e, which was introduced in our previous work [polymer 2009, 50, 4456] to distinguish different dewetting pathways. here, u(q0) and e described the initial amplitude of the surface undulation and original thickness of film, respectively; second, composition produced significant influences on its gradient in composition fluctuation, resulting in the accelerated (or suppressed) dewetting; last, this kind of acceleration or suppression affected the following interplay between phase separation and dewetting so much. using two samples of "dewetting/wetting-phase separation" and "wetting-dewetting/phase separation" with different components, we discussed the interplay mechanism of them in detail. in conclusion, our results indicate that dewetting, phase separation, and the following interplay between them are sensitive to composition in blend. furthermore, composition gradient plays an important role in them.
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000292417800032
公开日期	2012-06-08
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/44481]
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	You JC,Liao YG,Men YF,et al. Composition Effect on Interplay between Phase Separation and Dewetting in PMMA/SAN Blend Ultrathin Films[J]. macromolecules,2011,44(13):5318-5325.
APA	You JC,Liao YG,Men YF,Shi TF,An LJ,&Li XH.(2011).Composition Effect on Interplay between Phase Separation and Dewetting in PMMA/SAN Blend Ultrathin Films.macromolecules,44(13),5318-5325.
MLA	You JC,et al."Composition Effect on Interplay between Phase Separation and Dewetting in PMMA/SAN Blend Ultrathin Films".macromolecules 44.13(2011):5318-5325.