摘要
利用紫外辐照法在聚乙烯(PE)锂离子电池隔膜表面接枝上丙烯酸甲酯(MA)以改善隔膜的润湿性,研究了引发剂浓度、单体浓度和辐照时间对接枝率的影响,通过红外光谱、SEM观察和接触角测定等手段进行了表征分析。在纯MA单体溶液中,引发剂二苯甲酮(BP)浓度为0.02g/mL,辐照90s接枝率达到68.9%,接触角从原膜的46°降低到12°。
The ultraviolet irradiation method was used to graft methyl acrylate （MA） to Li-ion battery separator. It was found that the degree of grafting （DG） was influenced by initiator concentration, monomer concentration and irradiation time. The MA-graft-separator was analyzed by FT-IR, SEM and contact angle testing. With BP concentration of 0.02g/mL, pure MA monomer solution and irradiation time of 90s, DG was 68.9°, and the wetting ability improved obviously with the contact angle reduced to 12°from 46°.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2012年第1期112-115,共4页
Journal of Functional Materials
基金
国家高技术研究发展计划(863计划)资助项目(SQ2010AA0220844001)
国家自然科学基金资助项目(50703023)
上海市重大基础研究资助项目(08dj1400400)
关键词
紫外接枝
锂离子电池
隔膜
润湿性
接触角
UV grafting
Li-ion battery
separator
wetting ability
contact angle
