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Rheologica Acta

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01-01-2014 | Original Contribution

The structure and properties of long-chain branching poly(trimethylene terephthalate)

Authors: Jun Chen, Wei Wei, Qingrong Qian, Liren Xiao, Xinping Liu, Jing Xu, Baoquan Huang, Qinghua Chen

Published in: Rheologica Acta | Issue 1/2014

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Abstract

A multifunctional epoxide chain extender (ADR4370S) was used to increase the molecular weight of poly(trimethylene terephthalate) (PTT). And the effects of ADR4370S content on the molecular structure, melt viscosity, and rheological properties of PTT were studied. It is found that a star-type topological structure is formed in PTT by introduction of ADR4370S, and the balance torque, intrinsic viscosity, and molecular weight are increased by increasing ADR4370S dosage. The rheological measurement results show that the elastic modulus, complex viscosity, and shear thinning behavior of long-chain branching PTT are increased with the concentration of ADR4370S. The presence of broadened relaxation time spectrum and a long relaxation time mode for the PTT with 1.50 wt% ADR4370S demonstrate that the cross-linking reaction occurs, and the gel forms in the PTT system.

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Title: The structure and properties of long-chain branching poly(trimethylene terephthalate)
Authors: Jun Chen
Wei Wei
Qingrong Qian
Liren Xiao
Xinping Liu
Jing Xu
Baoquan Huang
Qinghua Chen
Publication date: 01-01-2014
Publisher: Springer Berlin Heidelberg
Published in: Rheologica Acta / Issue 1/2014
Print ISSN: 0035-4511
Electronic ISSN: 1435-1528
DOI: https://doi.org/10.1007/s00397-013-0737-z

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