Synergistic Toughening and Strengthening of PBAT/TPS Blends by Microcrystalline Cellulose-Hyperbranched Polyester Grafting Derivative

IF 5 3区工程技术 Q2 ENGINEERING, ENVIRONMENTAL

Journal of Polymers and the Environment Pub Date : 2025-05-15 DOI:10.1007/s10924-025-03585-6

Shuyi Zhou, Yujuan Jin, Maolin Guo, Huafeng Tian, Yunxuan Weng

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Abstract

To enhance the compatibility of the PBAT/TPS blends, a kind of microcrystalline cellulose-hyperbranched polyester grafting derivative (MCC-HBP) was synthesized to strengthen the interfacial interaction. The results indicated that when the content of MCC-HBP was 0.8 phr, the hydrogen bonding fraction of PBAT/TPS/MCC-HBP blends reached its peak at 0.41, indicating the strongest interaction between PBAT and TPS. Thermal analysis revealed that the addition of MCC-HBP shifted the crystallinity-crystallization time curve of the blend to the right, suggesting that the hydrogen bonding among MCC-HBP, PBAT, and TPS inhibited the movement of polymer chains, thereby suppressing crystal growth in PBAT. Furthermore, at 0.8 phr MCC-HBP content, the PBAT/TPS/MCC-HBP blends exhibited the widest melt processing window and the best thermal stability. The mechanical properties of PBAT/TPS blends were improved most significantly by 0.8 phr of MCC-HBP, with a 27.99% increase in tensile strength, a 23.09% increase in elongation at break, and a 40.51% increase in tensile toughness.

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微晶纤维素-超支化聚酯接枝衍生物对PBAT/TPS共混物的增韧强化研究

为了提高PBAT/TPS共混物的相容性，合成了一种微晶纤维素-超支化聚酯接枝衍生物（MCC-HBP），以增强界面相互作用。结果表明，当MCC-HBP的含量为0.8 phr时，PBAT/TPS/MCC-HBP共混物的氢键分数在0.41处达到峰值，表明PBAT与TPS的相互作用最强。热分析表明，MCC-HBP的加入使共混物的结晶-结晶时间曲线向右移动，表明MCC-HBP、PBAT和TPS之间的氢键作用抑制了聚合物链的移动，从而抑制了PBAT中的晶体生长。此外，当MCC-HBP含量为0.8 phr时，PBAT/TPS/MCC-HBP共混物的熔体加工窗口最宽，热稳定性最好。当添加0.8 phr的MCC-HBP时，PBAT/TPS共混物的力学性能得到显著改善，拉伸强度提高27.99%，断裂伸长率提高23.09%，拉伸韧性提高40.51%。

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来源期刊

Journal of Polymers and the Environment 工程技术-高分子科学

CiteScore

9.50

自引率

7.50%

发文量

297

审稿时长

9 months

期刊介绍： The Journal of Polymers and the Environment fills the need for an international forum in this diverse and rapidly expanding field. The journal serves a crucial role for the publication of information from a wide range of disciplines and is a central outlet for the publication of high-quality peer-reviewed original papers, review articles and short communications. The journal is intentionally interdisciplinary in regard to contributions and covers the following subjects - polymers, environmentally degradable polymers, and degradation pathways: biological, photochemical, oxidative and hydrolytic; new environmental materials: derived by chemical and biosynthetic routes; environmental blends and composites; developments in processing and reactive processing of environmental polymers; characterization of environmental materials: mechanical, physical, thermal, rheological, morphological, and others; recyclable polymers and plastics recycling environmental testing: in-laboratory simulations, outdoor exposures, and standardization of methodologies; environmental fate: end products and intermediates of biodegradation; microbiology and enzymology of polymer biodegradation; solid-waste management and public legislation specific to environmental polymers; and other related topics.