Rheological and crystallization behavior of linear and branched PBT

Document Type

Conference Proceeding

Publication Date

9-28-2007

Abstract

Rheological and thermal characteristics of PBT resins were investigated with potential applications in low density foaming. The branched PBT was produced by extrusion modification with a tri-functional modifier, whereas the linear PBT was processed under the same condition without the modifier. The presence of branched molecules resulted in increased elasticity and slower crystallization kinetics due to higher concentration of entanglements and/or increased interchain interactions. Degradation by processing for both resins produced shorter chains, and involved reduced shear viscosity and faster crystallization kinetics, in particular, at high temperature.

Identifier

34648817553 (Scopus)

ISBN

[1604232145, 9781604232141]

Publication Title

Annual Technical Conference ANTEC Conference Proceedings

First Page

1467

Last Page

1471

Volume

3

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