Dewetting kinetics of thin polymer bilayers: Role of under layer
文献类型：期刊论文
| 作者 | Xu L ; Bandyopadhyay D ; Shi TF ; An LJ ; Sharma A ; Joo SW |
| 刊名 | polymer
 |
| 出版日期 | 2011 |
| 卷号 | 52期号:19页码:4345-4354 |
| 关键词 | 2-LAYERED LIQUID-FILM NONLINEAR STABILITY ANALYSIS SOFT ELASTOMERIC LAYERS INTERFACE INSTABILITY SURFACTANT DYNAMICS MORPHOLOGY THICKNESS PATHWAYS |
| ISSN号 | 0032-3861 |
| 通讯作者 | sharma a |
| 中文摘要 | a combined experimental and computational study is presented to uncover the dewetting kinetics of the ps/pmma system by changing the film thickness of the pmma under layer. on the low m(w), pmma (m(w) = 15 kg/mol) layer, the dewetting velocity of ps film firstly rapidly decreases (regime i), and then becomes almost invariant (regime ii) with the increase of the film thickness of the liquid lower layer. experiments suggest that the transition from regime i to regime ii is correlative with the property of the solid substrates. the linear stability analysis of thin bilayers uncovers a bimodal behaviour of the instability under the experimental conditions and changeover of dominant mode of instability from one interface to the other is the major reason behind the switching of regimes. the nonlinear simulations closely mimic the experimental interfacial morphologies and suggest two different pathways of hole growth for regimes i and ii under experimental condition. the simulations also indicate that the rapid reduction in the dewetting velocity is because of the increased excursion or penetration of the upper layer into the lower layer near the three phase contact line as the viscous resistance at the more viscous pmma layer reduces with its increasing thickness. a qualitative match is thus found between the experimental and theoretical trends of the dewetting velocities. in addition, the experiments show that on a high m(w) pmma (m(w) = 365 kg/mol) layer, the kinetics of hole growth of the ps layer is not affected by the pmma layer thickness. (c) 2011 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:000294796300021 |
| 公开日期 | 2012-06-08 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/44376]  |
| 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 | Xu L,Bandyopadhyay D,Shi TF,et al. Dewetting kinetics of thin polymer bilayers: Role of under layer[J]. polymer,2011,52(19):4345-4354. |
| APA | Xu L,Bandyopadhyay D,Shi TF,An LJ,Sharma A,&Joo SW.(2011).Dewetting kinetics of thin polymer bilayers: Role of under layer.polymer,52(19),4345-4354. |
| MLA | Xu L,et al."Dewetting kinetics of thin polymer bilayers: Role of under layer".polymer 52.19(2011):4345-4354. |
入库方式： OAI收割
来源：长春应用化学研究所
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