The effects of melt grafted maleated polybutylene succinate on the properties of poly(hydroxybutyrate-co-hydroxyhexanoate)/polybutylene succinate blends,Journal of Vinyl and Additive Technology

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The effects of melt grafted maleated polybutylene succinate on the properties of poly(hydroxybutyrate-co-hydroxyhexanoate)/polybutylene succinate blends
Journal of Vinyl and Additive Technology ( IF 3.8 ) Pub Date : 2021-05-03 , DOI: 10.1002/vnl.21828
Mohd Zharif Ahmad Thirmizir _{1,

2} , Zainal Arifin Mohd Ishak _{1,

2} , Razaina Mat Taib _{1,

2} , K. Sudesh Kumar C. Kanapathi Pillai ₃ , Muhamad Saifuddin Salim _{1,

2} , Aziz Hassan ₄ , Mohd Bashree Abu Bakar ₅

Affiliation

Poly(hydroxybutyrate-co-hydroxyhexanoate) (PHBHH)/poly(butylene succinate) (PBS) blends were prepared using a melt blending technique. A compatibilizer of maleated PBS (PBSgMA) was produced using reactive melt grafting by varying the maleic anhydride (MA) monomer concentration ranging from 3 to 10 parts per hundred resin (phr). Fourier-transform infrared (FTIR) spectroscopy and nuclear magnetic resonance (NMR) spectroscopy analyses confirmed the grafting reaction of the PBSgMA. The PBSgMA was incorporated in the 80PHBHH/20PBS and 50PHBHH/50PBS blends to investigate the effect of maleated compatibilizer on the tensile, flexural, drop weight impact, and water absorption properties of the blends with droplets dispersed and co-continuous morphology. The incorporation of PBSgMA increased the tensile and flexural strength of both the 80PHBHH/20PBS and 50PHBHH/50PBS blends, where the optimum properties achieved at 5 phr concentration of MA. The drop weight impact test results showed that uncompatibilized and compatibilized 50PHBHH/50PBS blends had higher critical strain energy release rate (G_c) than the neat PHBHH. However, blending and compatibilizing did not have a positive effect on the critical stress intensity factor (K_c) of the neat PHBHH. Scanning electron microscopy (SEM) confirmed the improvement of interfacial adhesion and PBS polymer dispersion in PHBHH/PBS blends when incorporated with 5PBSgMA. The water absorption test results demonstrated that compatibilized blends absorbed slightly more water than uncompatibilized blends due to the presence of hygroscopic carboxyl groups of the PBSgMA. However, water absorption effects were reversible and did not result in severe permanent damage to the blends.

中文翻译：

熔融接枝马来化聚丁二酸丁二醇酯对聚（羟基丁酸-共-羟基己酸酯）/聚丁二酸丁二醇酯共混物性能的影响

使用熔融共混技术制备聚（羟基丁酸酯-共-羟基己酸酯）（PHBHH）/聚（丁二酸丁二醇酯）（PBS）共混物。马来酸化 PBS (PBSgMA) 的增容剂是使用反应性熔体接枝通过改变马来酸酐 (MA) 单体浓度范围从 3 到 10 份/100 份树脂 (phr) 来生产的。傅里叶变换红外 (FTIR) 光谱和核磁共振 (NMR) 光谱分析证实了 PBSgMA 的接枝反应。将 PBSgMA 掺入 80PHBHH/20PBS 和 50PHBHH/50PBS 混合物中，以研究马来化增容剂对具有分散液滴和共连续形态的混合物的拉伸、弯曲、落锤冲击和吸水性能的影响。PBSgMA 的掺入增加了 80PHBHH/20PBS 和 50PHBHH/50PBS 混合物的拉伸和弯曲强度，其中在 5 份 MA 浓度下实现了最佳性能。落锤冲击试验结果表明，未增容和增容的 50PHBHH/50PBS 共混物具有更高的临界应变能释放率（G _c ) 比整洁的 PHBHH。然而，混合和增容对纯 PHBHH的临界应力强度因子 ( K _c )没有积极影响。扫描电子显微镜 (SEM) 证实，当与 5PBSgMA 结合时，PHBHH/PBS 混合物中的界面粘附力和 PBS 聚合物分散度得到改善。吸水测试结果表明，由于 PBSgMA 的吸湿性羧基的存在，相容的混合物比未相容的混合物吸收的水略多。然而，吸水效应是可逆的，不会对共混物造成严重的永久性损坏。

更新日期：2021-05-03

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