Accession Number : ADA181602

Title :   A Research Project on the Emulsifying and Homogenizing Properties of Block Copolymers in Polymer Blends.

Descriptive Note : Final rept. 1 Jul 77-30 Apr 87,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF CHEMICAL ENGINEERING

Personal Author(s) : Cohen,Robert E

PDF Url : ADA181602

Report Date : 15 Jun 1987

Pagination or Media Count : 8

Abstract : Ten years of ONR sponsored research in this laboratory has led to a clear and unified view of the emulsifying or homogenizing role of diblock copolymers in blends of amorphous rubbery polymers. Recent work emphasized that a similar, but more complex set of phenomena may be useful in the manipulation of semicrystalline polymer blend morphologies and properties. The research focused on model polymers comprised of nonpolar hydrocarbon repeat units. The work built on strong capabilities for in-house synthesis of the required homopolymers and diblock copolymers and for molecular, morphological, and mechanical characterization of the selected polymers. Keywords: Block copolymers, Emulsions.

Descriptors :   *POLYMERS, *BLOCK COPOLYMERS, *EMULSIONS, AMORPHOUS MATERIALS, COPOLYMERS, HYDROCARBONS, MIXTURES, MODELS, POLARIZATION, RUBBER, SYNTHESIS, NAVAL RESEARCH, PHYSICAL PROPERTIES, MORPHOLOGY, VISCOELASTICITY, SYNTHESIS(CHEMISTRY), PHASE SHIFT, POLYPROPYLENE

Subject Categories : Polymer Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE