摘要
采用超声辅助动态分散装置制备石墨烯纳米片/聚乙二醇(GNPs/PEG)复配改性剂,通过熔融共混法制备一系列GNPs/PEG/聚乳酸(PLA)复合材料,在120℃下对样品进行不同时间的退火处理。利用广角X-射线衍射仪(WAXD)和偏光显微镜(POM)分析了复配改性剂GNPs/PEG及退火对PLA结晶行为的影响。结果表明,GNPs/PEG的添加未改变PLA的晶型,随着退火时间的增加,纯PLA结晶的完善程度会进一步提高,GNPs/PEG的添加有利于缩短退火时间;退火30min时,GNPs/PEG/PLA复合材料的晶体较为完善,继续延长退火时间对其晶体形貌几乎没有影响。
Graphene nanosheets(GNPs)/polyethylene glycol(PEG)compound modifier was prepared by ultrasonic assisted dynamic dispersion device,and a series of polylactic acid(PLA)/GNPs/PEG composites were prepared by melt blending,then the samples were annealed at 120℃ under different times.The effects of compounding modifier GNPs/PEG and annealing on crystallization behavior of PLA were analyzed by wide angle X-ray diffractometry(WAXD)and polarized light microscopy(POM).The results shown that the introduction of GNPs/PEG did not change the crystal form of PLA,and with increasing of annealing time,the perfect degree of pure PLA crystals was further improved.Meanwhile,after annealing 30 min,the crystals of PLA/GNPs/PEG were perfected,while the further extension of annealing time had almost no effect on the crystal.
作者
朱艳
张显勇
贾仕奎
王忠
付蕾
陈立贵
Zhu Yan;Zhang Xianyong;Jia Shikui;Wang Zhong;Fu Lei;Chen Ligui(School of Materials Science and Engineering,National&Local Joint Engineering Laboratory for Slag Comprehensive Utilization and Environmental Technology,Shaanxi University of Technology,Hanzhong 723000)
出处
《化工新型材料》
CAS
CSCD
北大核心
2021年第7期147-150,157,共5页
New Chemical Materials
基金
陕西省自然科学基础研究项目(2021JM-486)
国家自然科学基金项目(51703121)。
关键词
聚乳酸
石墨烯纳米片
聚乙二醇
退火
结晶行为
polylactic acid
graphene nanoplatelet
polyethylene glycol
anneal
crystallization behavior
