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Compatibilization of PLA/PBAT blends by using Epoxy-POSS

机译：使用环氧树脂的PLA / PBAT混合物的相容化

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摘要

Poly(lactic acid) (PLA)/poly(butylene adipate-co-terephthalate) (PBAT) blends were compatibilized using epoxidized polyhedral oligomeric silsesquioxanes (Epoxy-POSS). Three different Epoxy-POSS types were utilized having mono-, tri-, and multi-epoxides per POSS cage. In order to understand the localization of Epoxy-POSS types, wetting coefficients were calculated from surface energy measurements. According to scanning electron microscopy (SEM) and transmission electron microscopy (TEM), it was observed that Epoxy-POSS types mostly located at the interface of PLA/PBAT phases. The compatibilization of PLA and PBAT was shown through the decrease in dispersed particles size and the shifts in glass transition temperatures of phases. Mechanical properties of PLA/PBAT improved in the presence of Epoxy-POSS types. The Izod impact strength and elongation in tensile test values were maximized when 0.5% monoepoxy-POSS was used as compatibilizer. The reactions between Epoxy-POSS and polymers were monitored by Fourier transform infrared (FTIR) analysis and rheology. (c) 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47217.
机译：使用环氧化多面体低聚倍半硅氧烷（环氧 - POSS），将聚（乳酸）/聚（丁二酸丁酸酯 - 共 - 对苯二甲酸酯）（PBAT）共同​​分化。使用三种不同的环氧树脂类型，具有每种笼子的单态，三苯和多环氧化物。为了了解环氧树脂类型的定位，从表面能量测量计算润湿系数。根据扫描电子显微镜（SEM）和透射电子显微镜（TEM），观察到环氧树脂类型主要位于PLA / PBAT阶段的界面。通过分散的颗粒尺寸的降低和相位的玻璃化转变温度的变化显示PLA和PBAT的相容化。 PLA / PBAT的机械性能在存在环氧树脂类型的情况下改善。当0.5％单己基 - 足以用作增容剂时，硫代冲击强度和拉伸试验值中的伸长率最大化。通过傅里叶变换红外（FTIR）分析和流变学监测环氧树脂和聚合物之间的反应。 （c）2018 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2019,136,47217。

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