期刊
POLYMER
卷 119, 期 -, 页码 212-223出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2017.04.009
关键词
Cocontinuity; Filled polymer blends; Pendular aggregates; Phase inversion; Rheology
资金
- National Science Foundation (NSF-CBET grant) [0932901, 1336311]
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [1435461, 1434674] Funding Source: National Science Foundation
- Div Of Chem, Bioeng, Env, & Transp Sys
- Directorate For Engineering [1336311] Funding Source: National Science Foundation
We explore the effects of adding silica particles to blends of two immiscible polymers, polyisobutylene (PIB) and polyethylene oxide (PEO) across a wide range of compositions, and particle loadings of up to 30 vol %. The silica particles have strong affinity for PEO, and hence, if there is sufficient PEO to fully engulf the particles, a combined phase of particles-in-PEO is formed. We construct a composition morphology map which reveals two microstructures that are qualitatively different from those seen in particle-free polymer blends: one in which particles are bonded together by small menisci of PEO, and the other in which a highly-filled particles-in-PEO phase percolates throughout the sample. Particles widen the composition range over which co-continuous structures appear. Overall we find that particles affect the morphology greatly when the polymer preferred by the particles (PEO) is in a minority, but only modestly when the preferred polymer is in a majority. (C) 2017 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据