Takayama Tetsuo
Graduate School of Organic Materials Science, Yamagata University, Yonezawa 992-8510, Japan.
Materials (Basel). 2023 Feb 12;16(4):1536. doi: 10.3390/ma16041536.
Polycarbonate (PC), an engineering plastic, has excellent mechanical strength and toughness. Moreover, this transparent polymer material can be used in fields where materials require mechanical properties and transparency. Nevertheless, PC is known to have a high melt viscosity. Moreover, blending with polystyrene (PS), an inherently brittle material, has been used to adjust its melt viscosity. As a result, the PS makes PC/PS polymer blends more brittle than PC alone. As described herein, after attempting to achieve compatibility with inorganic particles, the results show that the dispersion of small amounts of inorganic clay and silica particles in PC/PS polymer blends maintained transparency while improving the impact strength to a level comparable to that of polycarbonate. Apparently, the inorganic particles promote the fine dispersion of PS. Moreover, the spherical morphology of the inorganic particles is more effective at compatibilizing the polymer blend because the inorganic particles can apply isotropic interaction forces.
聚碳酸酯（PC）是一种工程塑料，具有优异的机械强度和韧性。此外，这种透明聚合物材料可用于对材料的机械性能和透明度有要求的领域。然而，众所周知，PC具有较高的熔体粘度。此外，与本质上易碎的聚苯乙烯（PS）共混已被用于调节其熔体粘度。结果，PS使PC/PS聚合物共混物比单独的PC更易碎。如本文所述，在尝试与无机颗粒实现相容性之后，结果表明，少量无机粘土和二氧化硅颗粒在PC/PS聚合物共混物中的分散保持了透明度，同时将冲击强度提高到了与聚碳酸酯相当的水平。显然，无机颗粒促进了PS的精细分散。此外，无机颗粒的球形形态在使聚合物共混物相容方面更有效，因为无机颗粒可以施加各向同性的相互作用力。
