Preparation and Rheological Characterization of Long Chain Branching Polyglycolide

Wei-Lin Liu; Ming-Fu Lyu; Heng-Yuan Zhang; Jian-Ye Liu; Shi-Jun Zhang

doi:10.1007/s10118-024-3118-4

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Preparation and Rheological Characterization of Long Chain Branching Polyglycolide

RESEARCH ARTICLE | Updated：2024-08-06

- Preparation and Rheological Characterization of Long Chain Branching Polyglycolide
- Chinese Journal of Polymer Science Vol. 42, Issue 8, Pages: 1177-1184(2024)
- Affiliations：
  
  a.Beijing University of Chemical Technology, Beijing 100029, China
  b.SINOPEC (Beijing) Research Institute of Chemical Industry Co., Ltd., Beijing 100013, China
- Author bio：
  
  liujy.bjhy@sinopec.com (J.Y.L.)
  zhangsj.bjhy@sinopec.com (S.J.Z.)
- Funds：
- DOI：10.1007/s10118-024-3118-4
  CLC：
- Published：01 August 2024，
  
  Published Online：17 May 2024，
  
  Received：19 November 2023，
  
  Revised：25 March 2024，
  
  Accepted：29 March 2024
- Accepted：
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Liu, W. L.; Lyu, M. F.; Zhang, H. Y.; Liu, J. Y.; Zhang, S. J. Preparation and rheological characterization of long chain branching polyglycolide. Chinese J. Polym. Sci. 2024, 42, 1177–1184

Wei-Lin Liu, Ming-Fu Lyu, Heng-Yuan Zhang, et al. Preparation and Rheological Characterization of Long Chain Branching Polyglycolide. [J]. Chinese Journal of Polymer Science 42(8):1177-1184(2024)
Liu, W. L.; Lyu, M. F.; Zhang, H. Y.; Liu, J. Y.; Zhang, S. J. Preparation and rheological characterization of long chain branching polyglycolide. Chinese J. Polym. Sci. 2024, 42, 1177–1184 DOI： 10.1007/s10118-024-3118-4.

Wei-Lin Liu, Ming-Fu Lyu, Heng-Yuan Zhang, et al. Preparation and Rheological Characterization of Long Chain Branching Polyglycolide. [J]. Chinese Journal of Polymer Science 42(8):1177-1184(2024) DOI： 10.1007/s10118-024-3118-4.

摘要

In this work

long chain branching (LCB) PGA was prepared by two-step functional group reaction method and the structure of LCB was fully characterized by rheology. It is clear that the melt strength of the modified PGA has been greatly improved.

Abstract

The long chain branching (LCB) polyglycolide (PGA) was successfully prepared by the successive reactions of the terminal hydroxyl groups of PGA with triglycidyl isocyanurate (TGIC) and pyromellitic dianhydride (PMDA). The influence of LCB produced by functional group reaction on rheological and crystallization behavior was studied and discussed through linear rheol

ogy

uniaxial elongation and DSC (differential scanning calorimetry). The much higher viscosity and the more notable strain hardening behavior of modified PGA indicates the LCB with high degree of entanglements are created. The melt strength of PGA is finally improved greatly and can make sure that the supercritical CO

foaming can be carried out successfully.

关键词

Keywords

Polyglycolide (PGA)Long chain branching (LCB)Rheology

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