In situ investigation of formation kinetics of microporous structure in PVDF thin films prepared via thermally‐induced phase separation (TIPS): Effects of film thickness and polymer concentration
Bin Yang,
Yang‐nan Yu,
Yang Pan,
Shu‐qing Wang,
Xiang Xu,
Ying‐ying Wang,
Jia‐sheng Qian,
Ru Xia,
Peng Zhang,
You Shi,
You‐lei Tu
Affiliations
Bin Yang
College of Chemistry & Chemical Engineering Key Laboratory of Environment‐Friendly Polymeric Materials of Anhui Province Institute of High Performance Rubber Materials & Products Anhui University Hefei Anhui China
Yang‐nan Yu
College of Chemistry & Chemical Engineering Key Laboratory of Environment‐Friendly Polymeric Materials of Anhui Province Institute of High Performance Rubber Materials & Products Anhui University Hefei Anhui China
Yang Pan
College of Chemistry & Chemical Engineering Key Laboratory of Environment‐Friendly Polymeric Materials of Anhui Province Institute of High Performance Rubber Materials & Products Anhui University Hefei Anhui China
Shu‐qing Wang
College of Chemistry & Chemical Engineering Key Laboratory of Environment‐Friendly Polymeric Materials of Anhui Province Institute of High Performance Rubber Materials & Products Anhui University Hefei Anhui China
Xiang Xu
College of Chemistry & Chemical Engineering Key Laboratory of Environment‐Friendly Polymeric Materials of Anhui Province Institute of High Performance Rubber Materials & Products Anhui University Hefei Anhui China
Ying‐ying Wang
College of Chemistry & Chemical Engineering Key Laboratory of Environment‐Friendly Polymeric Materials of Anhui Province Institute of High Performance Rubber Materials & Products Anhui University Hefei Anhui China
Jia‐sheng Qian
College of Chemistry & Chemical Engineering Key Laboratory of Environment‐Friendly Polymeric Materials of Anhui Province Institute of High Performance Rubber Materials & Products Anhui University Hefei Anhui China
Ru Xia
College of Chemistry & Chemical Engineering Key Laboratory of Environment‐Friendly Polymeric Materials of Anhui Province Institute of High Performance Rubber Materials & Products Anhui University Hefei Anhui China
Peng Zhang
College of Chemistry & Chemical Engineering Key Laboratory of Environment‐Friendly Polymeric Materials of Anhui Province Institute of High Performance Rubber Materials & Products Anhui University Hefei Anhui China
You Shi
College of Polymer Science & Engineering State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu Sichuan China
You‐lei Tu
College of Polymer Science & Engineering State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu Sichuan China
Abstract In this research, series of PVDF microporous films with various polymer concentrations and thickness were prepared through thermally‐induced phase separation in air condition with diphenyl carbonate as the diluent. Effects of polymer concentration and film thickness on the formation kinetics of microporous structure of PVDF thin films were in situ investigated via TII technique. The instantaneous heat conduction inside the films during film formation was also evaluated. Two types of parameter models were adopted in order to disclose the time and location dependence of TIPS film solidification kinetics, respectively. Hierarchical microstructures, crystallization behavior and thermal properties of the TIPS films were also characterized by SEM, DSC, and TGA, respectively. The current study could supply an insight into the fabrication of PVDF microporous films with target microstructure and desirable performance.
