Accession Number : AD0683671

Title :   CHARACTERIZATION OF POLY(DIMETHYL SILOXANE)-POLYCARBONATE BLOCK COPOLYMERS.

Descriptive Note : Technical rept.,

Corporate Author : PRINCETON UNIV N J FRICK CHEMICAL LAB

Personal Author(s) : Narkis,M. ; Tobolsky,Arthur V.

Report Date : JAN 1969

Pagination or Media Count : 21

Abstract : Shear modulus-temperature curves and swelling behavior of poly(dimethyl siloxane)-bisphenol-A polycarbonate block copolymers were studied. Two glass transitions corresponding to the silicone and polycarbonate phases are found. The dependence of one phase transition on the presence of the second phase is discussed. A correlation of the shear modulus between the two glass transitions and the swelling ratio of the rubbery phase is suggested. (Author)

Descriptors :   (*SHEAR STRESSES, *POLYMERS), (*SILOXANES, POLYMERS), (*CARBONATES, POLYMERS), PHASE STUDIES, SOLUBILITY, POLYESTER PLASTICS, SILICONE PLASTICS

Subject Categories : Plastics

Distribution Statement : APPROVED FOR PUBLIC RELEASE