材料科学
复合材料
抗弯强度
木质素
热变形温度
弯曲模量
挤压
艾氏冲击强度试验
扫描电子显微镜
造型(装饰)
填料(材料)
极限抗拉强度
化学
有机化学
作者
Saswata Sahoo,Manjusri Misra,Amar K. Mohanty
摘要
Abstract Composites were prepared from poly(butylene succinate) (PBS), lignin, and switchgrass using extrusion followed by injection molding techniques. The effects of the fillers (lignin and switchgrass) and polymeric methylene diphenyl diisocyanate (PMDI) compatibilizer on the physicomechanical and thermal properties of the composites were investigated. Use of hybrid filler (1 : 1 lignin : switchgrass) resulted in slight improvement in the flexural strength of the composites. Incorporation of 1% PMDI into the hybrid filler reinforced composites significantly enhanced properties compared with the neat PBS which accounts for improvements in the flexural strength, flexural modulus, and heat deflection temperature (HDT) by nearly 165%, 375%, and by 24°C respectively. Lignin exhibited some effects on the thermal properties of composites. However, switchgrass demonstrated a minor effect on the thermal behavior of the composites compared with the lignin. An improved interface was observed from the scanning electron microscopy (SEM) of the compatibilized hybrid composites. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013
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