摘要
通过溶液浇铸法制备了聚乙二醇/纤维素纳米微纤(PEG/CNFs)复合相变储能材料,采用差示扫描量热仪(DSC)研究了CNFs含量对该PEG/CNFs复合材料中PEG结晶行为的影响,并利用Jeziorny、Ozawa和Mo模型对DSC结果进行了非等温结晶动力学分析。结果表明:加入CNFs后,复合材料中PEG的半结晶时间(t1/2)与Avrami指数(n)下降,表明CNFs充当了PEG的成核剂;另外,CNFs含量的增加抑制了PEG晶体的生长,PEG的结晶焓(ΔHPEG)显著下降。
Polyethylene glycol/cellulose nanofibrils（PEG/CNFs） phase change energy storage composites were prepared by solution casting method.The effect of CNFs content on crystallization behavior of PEG in the PEG/CNFs composites were investigated by differential scanning calorimetry（DSC）.Jeziorny,Ozawa and Mo models were used to analyze the nonisothermal crystallization process.The results show that the half crystallization time（t1/2） and the Avrami index（n） of PEG decrease by adding CNFs,this means that the CNFs act as nucleating agent; moreover,the crystallization enthalpy of PEG（ΔHPEG） decreases with the increasing CNFs content obviously.
出处
《塑料科技》
CAS
北大核心
2014年第10期35-40,共6页
Plastics Science and Technology
基金
浙江农林大学生物质资源化利用研究中心预研项目(2013SWZ02-2)
关键词
聚乙二醇
纤维素纳米微纤
非等温结晶动力学
储能材料
Polyethylene glycol
Cellulose nanofibrils
Nonisothermal crystallization kinetics
Energy storage materials
