摘要
采用熔融机械共混技术制备了聚羟基脂肪酸酯(PHA)/氧化石墨烯(GO)复合材料,通过拉伸性能测试、差示扫描量热分析、X射线衍射和扫描电子显微镜表征等手段,系统研究了GO对PHA基体材料力学性能、热性能、结晶行为和微观形貌的影响。结果表明,适量GO(0.04%)的引入可显著提高PHA的拉伸强度和断裂伸长率。PHA/GO复合材料的结晶度均随GO含量的增加而提高,说明GO能够促进PHA的结晶。GO在PHA基体中分散良好,与PHA基体具有良好的相容性。综上所述,GO是一种理想的PHA基体增强增韧改性剂。
In this study,poly(hydroxyalkanoate)(PHA)/graphene oxide(GO)composites were prepared through melt blending,and the effect of GO on the mechanical properties,thermal properties,crystallization behavior,and microstructure of the composites was systematically investigated by tensile testing,differential scanning calorimetry,X⁃ray diffraction,and scanning electron microscopy.The results indicated that introducing an appropriate amount of GO(0.04 wt%)could improve the tensile strength and elongation at break of PHA significantly.The crystallinity of the PHA/GO composites increased with an increase in the GO content,indicating that GO could promote the crystallization of PHA.SEM observation demonstrated that GO was well dispersed in the PHA matrix and exhibited good compatibility with PHA.In summary,GO can act as an ideal modifier to reinforce and toughen PHA.
作者
吴俊峰
杨慎宇
WU Junfeng;YANG Shenyu(Huanghe S&T University,Zhengzhou,China)
出处
《中国塑料》
CAS
CSCD
北大核心
2024年第10期43-47,共5页
China Plastics
基金
河南省高等学校精品在线开放课程项目(ZLG202104)
河南省专创融合特色示范课程项目(ZLG202305)。
关键词
聚羟基脂肪酸酯
氧化石墨烯
增强
增韧
共混
poly(hydroxyalkanoate)
graphene oxide
reinforcement
toughening
blending
