Crystallization and melting of Poly(4-hydroxybutyrate) characterized by fast scanning calorimetry

Xiangyan Yang; Runyu Zhou; Zixiao Xu; Jing Deng; Chuyue Wei; Jiahui Luo; Haoqi Luo; Lijia Zou; Yang Wu; Xin Ao; Shuaishuai Yuan; Weihua Zhou

Polymer Testing (Nov 2024)

Crystallization and melting of Poly(4-hydroxybutyrate) characterized by fast scanning calorimetry

Xiangyan Yang,
Runyu Zhou,
Zixiao Xu,
Jing Deng,
Chuyue Wei,
Jiahui Luo,
Haoqi Luo,
Lijia Zou,
Yang Wu,
Xin Ao,
Shuaishuai Yuan,
Weihua Zhou

Affiliations

Xiangyan Yang: Jiangxi Province Key Laboratory of Lithium-ion Battery Materials and Application (2024SSY05202), Department of Polymer Materials and Engineering, School of Physics and Materials Science, Nanchang University, Nanchang, 330031, China
Runyu Zhou: Jiangxi Province Key Laboratory of Lithium-ion Battery Materials and Application (2024SSY05202), Department of Polymer Materials and Engineering, School of Physics and Materials Science, Nanchang University, Nanchang, 330031, China
Zixiao Xu: Jiangxi Province Key Laboratory of Lithium-ion Battery Materials and Application (2024SSY05202), Department of Polymer Materials and Engineering, School of Physics and Materials Science, Nanchang University, Nanchang, 330031, China
Jing Deng: Jiangxi Province Key Laboratory of Lithium-ion Battery Materials and Application (2024SSY05202), Department of Polymer Materials and Engineering, School of Physics and Materials Science, Nanchang University, Nanchang, 330031, China
Chuyue Wei: Jiangxi Province Key Laboratory of Lithium-ion Battery Materials and Application (2024SSY05202), Department of Polymer Materials and Engineering, School of Physics and Materials Science, Nanchang University, Nanchang, 330031, China
Jiahui Luo: Jiangxi Province Key Laboratory of Lithium-ion Battery Materials and Application (2024SSY05202), Department of Polymer Materials and Engineering, School of Physics and Materials Science, Nanchang University, Nanchang, 330031, China
Haoqi Luo: Jiangxi Province Key Laboratory of Lithium-ion Battery Materials and Application (2024SSY05202), Department of Polymer Materials and Engineering, School of Physics and Materials Science, Nanchang University, Nanchang, 330031, China
Lijia Zou: Jiangxi Province Key Laboratory of Lithium-ion Battery Materials and Application (2024SSY05202), Department of Polymer Materials and Engineering, School of Physics and Materials Science, Nanchang University, Nanchang, 330031, China
Yang Wu: Jiangxi Province Key Laboratory of Lithium-ion Battery Materials and Application (2024SSY05202), Department of Polymer Materials and Engineering, School of Physics and Materials Science, Nanchang University, Nanchang, 330031, China
Xin Ao: Jiangxi Province Key Laboratory of Lithium-ion Battery Materials and Application (2024SSY05202), Department of Polymer Materials and Engineering, School of Physics and Materials Science, Nanchang University, Nanchang, 330031, China; Corresponding author.
Shuaishuai Yuan: Key Lab of Biobased Polymer Materials of Shandong Provincial Education Department, College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China; Corresponding author.
Weihua Zhou: Jiangxi Province Key Laboratory of Lithium-ion Battery Materials and Application (2024SSY05202), Department of Polymer Materials and Engineering, School of Physics and Materials Science, Nanchang University, Nanchang, 330031, China; Corresponding author.

Journal volume & issue: Vol. 140
p. 108597

Abstract

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Poly (4-hydroxybutyrate) (P4HB) is a marine biodegradable polyester with promising applications. Unfortunately, the crystallization and melting behavior of P4HB has not been systematically studied, due to the rapid crystallization near room temperature. In particular, the characterization of crystallization and melting of P4HB by fast scanning calorimetry (FSC) has not been reported previously. In this article, the common differential scanning calorimeter (DSC), polarized optical microscopy (POM), atomic force microscopy (AFM) and FSC were performed to investigate the crystallization and melting behavior of P4HB. The results indicated that melt crystallization facilitated the formation of fragmented crystals rather than complete spherulites. Furthermore, the P4HB exhibited a broad crystallization temperature range from −19 °C to 49 °C, and the crystallization and melting of P4HB was notably affected by the temperature, in addition to the heating or cooling rates. The higher crystallization temperature and lower cooling rates facilitated the formation of well-developed crystals. Remarkably, the P4HB is found to be unable to crystallize at heating or cooling rates exceeding 6 K/s. Moreover, double melting peaks could be discerned at moderate isothermal crystallization temperature exhibiting faster crystallization rate. The findings will provide theoretical guidance on how to optimize the processing parameters in modulating the crystallization of P4HB.

Published in Polymer Testing

ISSN: 0142-9418 (Print); 1873-2348 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Technology: Chemical technology: Polymers and polymer manufacture
Website: https://www.journals.elsevier.com/polymer-testing

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