Accession Number : ADA133069
Title : Homopolymer-Induced Microphase Separation of a Homogeneous Diblock Copolymer.
Descriptive Note : Technical rept.,
Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF CHEMICAL ENGINEERING
Personal Author(s) : Cohen,Robert E ; Torradas,Jose M
PDF Url : ADA133069
Report Date : 29 Aug 1983
Pagination or Media Count : 14
Abstract : Binary polymer blends were prepared from a homogeneous diblock copolymer (1,2 polybutadiene-1,4 polybutadiene) and either of the corresponding homopolymers. Using dynamic mechanical testing and transmission electron microscopy it was shown that the 1,4B homopolymer and the copolymer form homogeneous blends; however, addition of 1,2B homopolymer induces a heterogeneous morphology when present in sufficient proportions. The nature of this homopolymer-induced microphase separation is compared to predictions of a recent theory.
Descriptors : *Polymers, *Synthesis(Chemistry), Morphology, Homogeneity, Polybutadiene, Block copolymers, Binary compounds, Preparation, Separation
Subject Categories : Polymer Chemistry
Distribution Statement : APPROVED FOR PUBLIC RELEASE