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The Effect of Crystallinity on Chain Mobility and Free Volume in the Amorphous Regions of a Miscible Polycarbonate/polyester Blend by M. D. Zipper; G. P. Simon; P. Cherry; A. J. Hill is a Materials Science article available to read on EtoBox.

What is The Effect of Crystallinity on Chain Mobility and Free Volume in the Amorphous Regions of a Miscible Polycarbonate/polyester Blend about?

## Abstract Homopolymers and blends of polycarbonate/ThermX have been investigated by differential scanning calorimetry, dynamic mechanical analysis, density measurements, and positron annihilation lifetime spectroscopy. The study focuses on the chain mobility and free volume in the amorphous miscible regions of the blends and how this mobility and free volume are affected by increasing crystallinity. It is proposed that judicious annealing, which results in increasing crystallinity (while avoiding ageing or transesterification), induces a constraint on the amorphous region leading to an increase in __T~g~__ and coalescence of free volume sites. © 1994 John Wiley & Sons, Inc.

Who reads The Effect of Crystallinity on Chain Mobility and Free Volume in the Amorphous Regions of a Miscible Polycarbonate/polyester Blend?

Author

M. D. Zipper; G. P. Simon; P. Cherry; A. J. Hill

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0887-6266)

Published

1994

Language

EN

Field

Materials Science (Physical Sciences)