Biodegradable aliphatic–aromatic polyester with antibacterial property
Biodegradable aliphatic–aromatic polyester with antibacterial property
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DOI：
10.1002/pen.24347
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发表时间：
2016-10
影响因子：
3.2
通讯作者：
Hui Wang;M. Langner;S. Agarwal
中科院分区：
文献类型：
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作者：
Hui Wang;M. Langner;S. Agarwal
在不牺牲其可堆肥性、热稳定性和机械性能的前提下，将快速抗菌性能引入芳香族聚酯。采用双螺杆挤出机将抗菌剂聚（双胍）盐酸盐（PHMG）与聚（己二酸丁二酯-共-对苯二甲酸酯）（PBAT，也称为Ecoflex）以不同的量熔融混合。通过核磁共振、凝胶渗透色谱、扫描电子显微镜和能量色散X射线光谱分析证实了非反应性共混和均匀混合。研究了抗菌剂对堆肥性能、力学性能和热稳定性的影响。PHMG的存在略微改变了Ecoflex的降解曲线，保持了几乎相同的降解程度。根据PHMG的量，抗菌PBAT显示出高的热稳定性（降解开始于约330°C）、17-20 MPa的断裂应力、89-127 MPa的模量和大于700%的断裂伸长率。抗菌活性与生物降解性的结合使这种材料成为包括包装在内的许多不同应用的非常有趣的候选者。Polym.工程科学，2016.© 2016塑料工程师协会
Fast acting antibacterial property was introduced to aliphatic–aromatic polyester in the present work without sacrificing its compostability, thermal stability, and mechanical properties. Antibacterial poly(hexamethylene guanidine) hydrochloride (PHMG) was melt mixed with poly(butyleneadipate-co-terephthalate) (PBAT, also called Ecoflex) using a twin-screw extruder in different amounts. The non-reactive blending and uniform mixing was confirmed by nuclear magnetic resonance, gel permeation chromatography, scanning electron microscopy, and energy-dispersive X-Ray spectroscopy analysis. The influence of antibacterial agent on compostability, mechanical properties, and thermal stability was studied. The presence of PHMG changed slightly the degradation profile of Ecoflex retaining the extent of degradation almost the same. The antibacterial PBAT showed high thermal stability (degradation starts around 330°C), stress at break 17–20 MPa, modulus 89–127 MPa, and elongation at break more than 700% depending upon the amount of PHMG. The combination of antibacterial activity with biodegradability makes this material a very interesting candidate for many different applications including packaging. POLYM. ENG. SCI., 2016. © 2016 Society of Plastics Engineers