Jorda Maria, Montava-Jorda Sergi, Balart Rafael, Lascano Diego, Montanes Nestor, Quiles-Carrillo Luis
Technological Institute of Materials (ITM), Universitat Politècnica de València (UPV), Plaza Ferrándiz y Carbonell 1, 03801 Alcoy, Spain.
Department of Mechanical Engineering and Materials (DIMM), Universitat Politècnica de València (UPV), Plaza Ferrándiz y Carbonell 1, 03801 Alcoy, Spain.
Polymers (Basel). 2019 Aug 10;11(8):1331. doi: 10.3390/polym11081331.
This work shows the potential of binary blends composed of partially bio-based poly(ethyelene terephthalate) (bioPET) and fully bio-based poly(amide) 10,10 (bioPA1010). These blends are manufactured by extrusion and subsequent injection moulding and characterized in terms of mechanical, thermal and thermomechanical properties. To overcome or minimize the immiscibility, a glycidyl methacrylate copolymer, namely poly(styrene-ran-glycidyl methacrylate) (PS-GMA; Xibond™ 920) was used. The addition of 30 wt % bioPA provides increased renewable content up to 50 wt %, but the most interesting aspect is that bioPA contributes to improved toughness and other ductile properties such as elongation at yield. The morphology study revealed a typical immiscible droplet-like structure and the effectiveness of the PS-GMA copolymer was assessed by field emission scanning electron microcopy (FESEM) with a clear decrease in the droplet size due to compatibilization. It is possible to conclude that bioPA1010 can positively contribute to reduce the intrinsic stiffness of bioPET and, in addition, it increases the renewable content of the developed materials.
这项工作展示了由部分生物基聚对苯二甲酸乙二酯（生物PET）和全生物基聚酰胺10,10（生物PA1010）组成的二元共混物的潜力。这些共混物通过挤出和随后的注塑成型制造，并在机械、热和热机械性能方面进行了表征。为了克服或最小化不相容性，使用了一种甲基丙烯酸缩水甘油酯共聚物，即聚（苯乙烯-无规-甲基丙烯酸缩水甘油酯）（PS-GMA；西邦德™ 920）。添加30 wt%的生物PA可使可再生成分含量提高至50 wt%，但最有趣的是，生物PA有助于提高韧性和其他韧性性能，如屈服伸长率。形态学研究揭示了典型的不相容液滴状结构，并通过场发射扫描电子显微镜（FESEM）评估了PS-GMA共聚物的有效性，由于增容作用，液滴尺寸明显减小。可以得出结论，生物PA1010可以积极有助于降低生物PET的固有刚度，此外，它还增加了所开发材料的可再生成分含量。
