生物可降解PBS聚酯合金的制备与性能调控

doi:10.11896/cldb.20090030

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Abstract Poly(butylene succinate) (PBS) has become a research hotspot in recent years due to its complete biodegradability, non-toxic and harmless advantages. However, its further application is limited due to the low crystallization rate and poor toughness. In this research, PBS was modified by chemical grafting and physical blending to improve its toughness without sacrificing the biodegradability. PBS polyester alloys with higher toughness were prepared by melt blending of poly(butylene adipate-co-terephthalate) (PBAT) and modified PBS with glycidyl methacrylate (GMA). The effects of PBAT content on mechanical properties, thermal properties, crystallization properties, microstructure and processability of PBS polyester alloys were studied in this research. The results showed that with the increase of PBAT content, the shear deformation behavior of polyester alloy under external force was more obvious, and the fracture behavior of the material changed from brittle fracture to ductile fracture. And the comprehensive performance of PBS polyester alloy was the best when the content of PBAT in alloy was 30% (mass fraction). With the increase of PBAT content in the polyester alloy, the crystallization enthalpy, melting enthalpy and crystallinity of alloy decreased, and when the content of PBAT in the alloy reached to 50%, the crystallinity of polyester alloy was the value of 29.51%, which was 39% lower than pure PBS, meanwhile the glass transition temperature of the alloy also decreased. The melt strength of the alloy was greatly improved by the introduction of PBAT; in other words, the processing performance of the alloy was enhanced obviously. It was evidently found that the addition of PBAT led to the better toughness of PBS polyester alloy. With the increase of PBAT content in the alloy, the notched impact strength increased gradually, the tensile strength decreased rapidly, and the elongation at break of alloy increased first and then decreased. The elongation at break was 687% when the content of PBAT was 30%, which was 136% higher than pure PBS; and the notched impact strength of the alloy was 397 J/m when content of PBAT was 50%, which was 892.5% higher than pure PBS. The grafted PBS-g-GMA and PBAT alloys were also compared with the non-grafted PBS/PBAT alloys, which showed that the compatibility between PBS-g-GMA and PBAT was improved after grafting.

Key words： poly(butylene succinate) poly(butylene adipate-co-terephthalate) polyester alloy biodegradable toughening modification processability

Published: 25 November 2021 Online: 2021-12-13

CLC number:

TQ323

Fund:

About author: Yingyong Jiangreceived his M.S. degree in June 2020 from Changchun University of Technology. He is now a doctoral student at School of Materials Science and Engineering of Changchun University of Technology. His main research direction is bio-based polymer materials.
Liang Renreceived his Ph.D. degree in June 2011 from Jilin University. He is currently an associate professor and doctoral supervisor in Changchun University of Technology, visiting scholar of Peking University. His research interests are strengthening and toughening of polymer materials, preparation and properties of organic and inorganic nano-hybrid materials, structural design and preparation of polymer matrix composites and bio-based polymer materials. He has published more than 20 articles in important journals at home and abroad and applied for more than 20 invention patents.
Mingyao Zhangreceived his Ph.D. degree in September 2003 in Northeast University. He is currently a professor and doctoral supervisor of Changchun University of technology, senior expert of Jilin Province, special professor of “Changbai Mountain Scholar” in Jilin Province. His research interests are preparation chemistry of micro and nano sized particles, high performance of general polymer materials and structural design and preparation of multiphase and multicomponent polymer materials. He has published more than 70 research papers and obtained more than 10 national invention patents.

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	JIANG Yingyong
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	SHUAI Jiaxin
	ZHANG Mingyao
	ZHANG Huixuan

Cite this article:

JIANG Yingyong,REN Liang,REN Zhong, et al. Preparation and Performance Control of Biodegradable PBS Polyester Alloy[J]. Materials Reports, 2021, 35(22): 22151-22159.

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http://www.mater-rep.com/EN/10.11896/cldb.20090030 OR http://www.mater-rep.com/EN/Y2021/V35/I22/22151

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