Functionalization of poly(butylene adipate-co-terephthalate) and its compatibilizing effect on PBAT/thermoplastic starch blends

IF 2.7 3区 化学 Q2 POLYMER SCIENCE Journal of Applied Polymer Science Pub Date : 2024-09-09 DOI:10.1002/app.56246
Guangxiang Zhang, Ke Yang, Songqi Zheng, Xiangyan Han, Yuexin Hu, Yuanyuan Han, Guiyan Zhao, Yulin Feng
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Abstract

Poly(butylene adipate-co-butylene terephthalate) (PBAT)/thermoplastic starch (TPS) blends were prepared by melt blending. However, the processability and practical application of PBAT/TPS blends are limited by their poor compatibility. To enhance the compatibility between PBAT and TPS, PBAT was functionalized by maleic anhydride (MA) to prepare PBAT-MA, and then it was employed as a compatibilizer for PBAT/PBAT-MA/TPS blends. The effects of PBAT-MA on the tensile properties, rheological properties, morphology, and dynamic mechanics of PBAT/PBAT-MA/TPS blends were studied in detail. Rheological results revealed that the interaction between PBAT-MA and TPS enhanced the segment entanglement ability and improved the compatibility of the blends, which enhanced the tensile properties of the blends. Compared with the PBAT/PBAT-MA/TPS (50/0/50) blend, the tensile strength of the PBAT/PBAT-MA/TPS (40/10/50) blend increased from 9.2 to 15.8 MPa, and the elongation at break increased from 326.9% to 1017.6%. The dynamic mechanical results showed that the Tg of PBAT and TPS were close to each other after the addition of PBAT-MA, which confirmed that the compatibility of the blend was improved. This study provides a feasible approach to preparing high-performance and cost-effective PBAT/PBAT-MA/TPS blends while expanding the application prospects of PBAT in the packaging industry and agricultural film.

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聚(己二酸丁二醇酯-共对苯二甲酸酯)的功能化及其对 PBAT/热塑性淀粉混合物的相容效果
聚(己二酸丁二醇酯-对苯二甲酸丁二醇酯)(PBAT)/热塑性淀粉(TPS)混合物是通过熔融混合制备的。然而,由于 PBAT/TPS 混合物的相容性较差,其加工性和实际应用受到了限制。为了提高 PBAT 与 TPS 的相容性,用马来酸酐(MA)对 PBAT 进行官能化,制备出 PBAT-MA,并将其用作 PBAT/PBAT-MA/TPS 共混物的相容剂。详细研究了 PBAT-MA 对 PBAT/PBAT-MA/TPS 共混物拉伸性能、流变性能、形态和动态力学的影响。流变学结果表明,PBAT-MA 与 TPS 之间的相互作用增强了段缠结能力,改善了共混物的相容性,从而提高了共混物的拉伸性能。与PBAT/PBAT-MA/TPS(50/0/50)共混物相比,PBAT/PBAT-MA/TPS(40/10/50)共混物的拉伸强度从9.2兆帕提高到15.8兆帕,断裂伸长率从326.9%提高到1017.6%。动态力学结果表明,添加 PBAT-MA 后,PBAT 和 TPS 的 Tg 相互接近,这证实了共混物的相容性得到了改善。这项研究为制备高性能、高性价比的 PBAT/PBAT-MA/TPS 共混物提供了一种可行的方法,同时也拓展了 PBAT 在包装行业和农用薄膜领域的应用前景。
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来源期刊
Journal of Applied Polymer Science
Journal of Applied Polymer Science 化学-高分子科学
CiteScore
5.70
自引率
10.00%
发文量
1280
审稿时长
2.7 months
期刊介绍: The Journal of Applied Polymer Science is the largest peer-reviewed publication in polymers, #3 by total citations, and features results with real-world impact on membranes, polysaccharides, and much more.
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