摘要
聚乙烯醇(PVA)薄膜因其高透明、良好的力学性能以及环保无污染的水溶液成膜过程,在柔性显示器件中具有潜在的应用前景。采用非接触电场诱导PVA溶液薄膜表面热扰动,使聚合物表面形貌发生改变。探讨电压对表面形貌、薄膜透光性、粗糙度、表面接触角以及力学性能的影响。利用原子力显微镜表征表面的形貌和粗糙度,紫外可见分光光度计(含积分球)测试薄膜的透光率,表面张力仪测试接触角,纳米压痕仪测试微米尺度模量,X射线衍射仪测试薄膜的结晶性。结果显示:在700 V的空间电场作用下,PVA表面粗糙度为1.486 nm,接触角116.5°,可见光透过率94.25%。而未施加电场的PVA薄膜上述指标分别为0.206 nm、70.4°和86.23%。此外,施加电场后薄膜的弹性模量与硬度以及结晶行为未发生变化。
Polyvinyl alcohol(PVA)thin film had potential application prospects in flexible display devices because of its high transparency,good mechanical properties and environmentally friendly and pollution-free aqueous solution film forming process.The non-contact electric field was used to induce thermal disturbance on the surface of the PVA solution film,which changed the surface morphology of the polymer.The effects of voltage on surface morphology,film light transmittance,roughness,surface contact angle and mechanical properties were discussed.Atomic force microscopy was used to characterize the morphology and roughness of the surface,ultraviolet-visible spectrophotometer(including integrating sphere)to test the light transmittance of the film,tensiometer to test the contact angle,nanoindentation to test the modulus of the film,and X-ray diffractometer to test the crystallinity of the film.The results show that under the action of a spatial electric field of 700 V,the surface roughness of PVA is 1.486 nm,the contact angle is 116.5°,and the visible light transmittance is 94.25%.The above indexes of PVA films without electric field are 0.206 nm,70.4°and 86.23%,respectively.In addition,the elastic modulus and hardness of the film and the crystallization behavior could not change after the application of the electric field.
作者
王金露
刘少琛
刘学清
刘继延
WANG Jinlu;LIU Shaochen;LIU Xueqing;LIU Jiyan(Key Laboratory of Optoelectronic Chemical Materials and Devices(Ministry of Education),Jianghan University,Institute of Optoelectronic Materials and Technology,Wuhan 430056,China)
出处
《塑料工业》
CAS
CSCD
北大核心
2023年第6期164-168,共5页
China Plastics Industry
基金
国家重点研发计划(No.2022YFB3603702)
国防科技重点实验室基金项目(6142204220609)。
关键词
聚乙烯醇
空间电场
表面粗化
透过率
疏水性
Polyvinyl Alcohol
Contactless Electric Field
Surface Coarsening
Transmittance
Hydrophobicity
作者简介
王金露,女,1992年生,在读硕士,从事功能化透明高分子材料研究。201140005171@stu.jhun.edu.cn;通信作者:刘学清,女,教授,主要从事光电功能高分子材料研究。liuxueqing2000@163.com。
