Ternary polymer blend with core-shell dispersed phases:: effect of the core-forming polymer on phase morphology and mechanical properties
Ternary polymer blend with core-shell dispersed phases:: effect of the core-forming polymer on phase morphology and mechanical properties
复制标题
DOI：
10.1016/s0032-3861(00)00057-4
复制
发表时间：
2000-06-01
期刊：
影响因子：
4.6
通讯作者：
Jérôme, R
中科院分区：
文献类型：
--
作者：
Luzinov, I;Pagnoulle, C;Jérôme, R
研究了由 PS（聚苯乙烯）、SBR（苯乙烯丁二烯橡胶）和不同聚烯烃（PO）组成的三元共混物的相形态和机械性能。 PS系统地形成基质，SBR和PO在分散相中结合。尽管使用了各种熔体粘度和刚度的PO，但二元（SBR/PO）分散相具有核壳结构，其中PO形成核。随着 PO 粘度的增加，核和包含它们的 SBR 域的平均尺寸也会增加。共混物的实验剪切储能模量与理论预测的比较表明，通过 SBR 壳从 PS 基体到 PO 核的应力传递取决于 SBR 包膜的模量。三元共混物的最终机械性能对 PO 芯材的刚度敏感。 (C) 2000 Elsevier Science Ltd. 保留所有权利。
Phase morphology and mechanical properties of ternary blends consisting of PS (polystyrene), SBR (styrene butadiene rubber) and different polyolefins (POs) have been studied. PS, systematically forms the matrix, SBR and PO being combined in the dispersed phase. Although POs of various melt viscosity and stiffness are used, the binary (SBR/PO) dispersed phase is of a core-shell structure, in which PO forms the core. Upon increasing the viscosity of PO, the average size of the cores and the SBR domains including them increases. Comparison of the experimental shear storage modulus of the blends with theoretical predictions indicates that the stress transfer from the PS matrix to the PO core through the SBR shell depends on the modulus of the SBR envelope. The ultimate mechanical properties of the ternary blends are sensitive to the stiffness of the PO core. (C) 2000 Elsevier Science Ltd. All rights reserved.