材料科学
极限抗拉强度
复合材料
聚丁二酸丁二醇酯
结晶度
差示扫描量热法
纳米复合材料
纳米颗粒
热力学
物理
纳米技术
作者
Kantima Chaochanchaikul,Chuntip Sakulkhaemaruethai
标识
DOI:10.1177/87560879231151711
摘要
How nanoparticle type and content affect polybutylene succinate (PBS) properties were investigated by varying nanoclay and calcium carbonate nanoparticles (nanoCaCO 3 ) from 0 to 15 wt%. PBS/nanoparticle composites were prepared by compounding with a co-rotating twin-screw extruder and forming them with a compression molding machine. Their mechanical properties, filler dispersion, crystallinity, and permeability were evaluated using tensile testing, energy dispersive X-ray analysis, transmission electron microscopy, differential scanning calorimetry, X-ray diffraction, and water vapor and gas permeability measurements. The results showed that adding nanoclay and nanoCaCO 3 enhanced the PBS stiffness. In comparison to neat PBS, the highest tensile moduli were 46% higher at 15 wt% nanoclay and 30% higher at 15 wt% nanoCaCO 3 . The ultimate tensile strength (UTS) for the PBS/nanoclay composites tended to decrease as the nanoclay content increased. Nanoclay dispersion was poor in composites containing more than 5 wt% nanoclay. Surface treating the nanoCaCO 3 particles with a fatty acid resulted in similar UTS values and reduced the elongation at break to 15% from 225% for the neat PBS. The decrease in ductility resulted from PBS chain scission. The nanoclay and nanoCaCO 3 at low content enhanced the PBS crystallization. The nanoplatelet-shaped nanoclay led to greater agglomeration than the cubic-shaped nanoCaCO 3 , but the nanoclay was more effective than the nanoCaCO 3 . The water vapor barrier properties improved with the added nanoclay, with about a 52% reduction in water vapor permeability as compared to neat PBS. The water vapor and oxygen barrier properties of nanoclay were more effective than the nanoCaCO 3 .
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