Accession Number : ADA142606

Title :   Characterization of Block Copolymers Based on Poly(3,3 -bis(ethoxymethyl)oxetane) and Other Novel Polyethers.

Descriptive Note : Semi-annual rept.,


Personal Author(s) : Hardenstine,K E ; Murphy,C J ; Jones,R B ; Sperling,L H ; Manser,G E

PDF Url : ADA142606

Report Date : 04 May 1984

Pagination or Media Count : 41

Abstract : The present study involves crystalline block copolymers based on poly(3,3-bis(ethoxymethyl)oxetane, polyBEMO, and random copolymers based on other either forming monomers. The objective of the work is to generate a block copolymer consisting of crystallizable polyether end blocks based on poly(BEMO) and an amorphous rubbery center block based on the polyether random copolymers. This paper will examine the interrelationships among glass and melting transition behavior, viscoelastic characteristics, tensile properties, and morphological features of these new block copolymers. The properties of the block copolymers will be compared with those of the homopolymer poly(BEMO).

Descriptors :   *Block copolymers, Polymers, Polyethers, X ray diffraction, Synthesis(Chemistry), Glass, Melting, Crystallization, Transition temperature, Mechanical properties, Spectroscopy, Tensile properties, Morphology, Reaction kinetics, Thermoplastic resins, Elastomers, Viscoelasticity, Chemical analysis, Crystals, Monomers, Oxetanes, Methyl radicals, Polystyrene, Polybutadiene, Isoprene

Subject Categories : Polymer Chemistry
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE