中国塑料2017，Vol.31Issue(8)：41-46,6.DOI:10.19491/j.issn.1001-9278.2017.08.007
聚乙烯醇/纳米石墨微片复合膜的制备与性能研究
Preparation and Performance of Poly(vinyl alcohol)/Graphite Nanoplatelet Composite Films
摘要
Abstract
In this work,graphite nanoplatelets (GNP) were prepared by the ultrasonic exfoliation of expanded graphite in distilled water,and then poly(vinyl alcohol) (PVA)/GNP composite films were prepared by a solution casting method using the mixture of PVA and GNP.The effects of GNP content and its dispersion in PVA matrix on the structure and properties of the composite films were investigated by means of scanning electron microscopy,resistivity tester and universal material tester.The results indicated that the graphite had been well exfoliated into GNP with a high.diameter-to-thickness ratio and also well dispersed in the matrix.The volume resistivity and water resistance of the composite films decreased continuously with an increase of GNP content,whereas their mechanical properties exhibited an increase at first and then tended to decrease.Most of all,the composite films containing 2 wt ％ GNP achieved the optimum performance.Its volume resistivity was reduced to 108 Ω · cm as an electrical percolation threshold and its tensile strength was improved to 7.34 MPa.Meanwhile,its water contact angle increased from 56.3 ° to 97.9 °,indicating better water resistance and hydrophilic properties in comparison with pure PVA.关键词
聚乙烯醇/纳米石墨微片/体积电阻率/力学性能/耐水性能Key words
poly(vinyl alcohol)/graphite nanoplatelet/volume resistivity/mechanical property/water resistance分类
化学化工引用本文复制引用
彭巧梅,雷晏琳,吴贺君,路萍,李伟..聚乙烯醇/纳米石墨微片复合膜的制备与性能研究[J].中国塑料,2017,31(8):41-46,6.基金项目
高分子材料工程国家重点实验室开放课题基金(sklpme2014-4-34) （sklpme2014-4-34）
国家级大学生创新创业训练计划项目(201610626005) （201610626005）
四川农业大学本科生科研兴趣培养项目(201504034) （201504034）
四川省教育厅自然科学类一般项目(16ZB0057) （16ZB0057）
