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Preparation and Rheological Characterization of Long Chain Branching Polyglycolide

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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 rheology, 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 CO2 foaming can be carried out successfully.

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Data Availability Statement

The data that support the findings of this study are available on request from the corresponding authors. The data are not publicly available due to privacy or ethical restrictions.

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Authors and Affiliations

  1. Beijing University of Chemical Technology, Beijing, 100029, China

    Wei-Lin Liu

  2. SINOPEC (Beijing) Research Institute of Chemical Industry Co., Ltd., Beijing, 100013, China

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

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  2. Ming-Fu Lyu
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Correspondence to Jian-Ye Liu or Shi-Jun Zhang.

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Liu, WL., Lyu, MF., Zhang, HY. et al. Preparation and Rheological Characterization of Long Chain Branching Polyglycolide. Chin J Polym Sci (2024). https://doi.org/10.1007/s10118-024-3118-4

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  • DOI: https://doi.org/10.1007/s10118-024-3118-4

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