文献类型：期刊文献

英文题名：Experimental and simulation studies of water molecule diffusion in polyvinyl butyral and its effect on thermal, insulating and mechanical properties

作者：Wang, Huihui[1];Sun, Li[1];Zeng, Zuoxiang[1];Xue, Weilan[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, POB 368,130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2025

卷号：704

外文期刊名：COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS

收录：;EI(收录号：20243917108547);WOS:【SCI-EXPANDED(收录号:WOS:001328256500001)】；

基金：Supporting Information 1, Specific steps for PVB preparation; Sup-porting Information 2, Specific steps of the PVB film characterization methodology; Supporting Information 3, Water absorption of PVB film.

语种：英文

外文关键词：PVB; Water absorption; Molecular dynamics simulation; Plasticizers; Mechanical property

摘要：Water ingress can significantly affect the performance and long-term reliability of polyvinyl butyral (PVB) films. To predict the lifespan of PVB, the water absorption kinetics of pure PVB films and plasticized PVB films were studied. It was found that the Fick's model could fit the experimental data well, and the addition of plasticizer decreased the water absorption of PVB films. The binding process of pure PVB and plasticized PVB with water molecules was simulated using molecular dynamics, and the results showed that the simulation results were consistent with the experimental results. The effect of water molecules on the hydrogen bonding state of PVB was analyzed using FTIR, which showed that the wavelength of -OH in the PVB increased continuously with the decrease of its water content. In addition, it was found that the addition of water molecules significantly diminished the thermal, insulating and mechanical properties of PVB films.