Temperature distribution in polymer film during thermally induced phase separation (TIPS): simulations and experimental observation

Thermally-induced phase separation (TIPS) was used to fabricate polyvinylidene fluoride (PVDF) films under different quenching conditions. Temperature gradient fields were in-situ formed inside the films through varying the TIPS quenching temperature, and an enthalpy transformation method (ETM) was...

Full description

Saved in:
Bibliographic Details
Published in:Journal of polymer research 2021-08, Vol.28 (8), Article 314
Main Authors: Yang, Bin, Wang, Shu-Qing, Chen, Qing-Ting, Ding, Meng-Ya, Yu, Yang-Nan, Pan, Yang, Xia, Ru, Ge, Qian-Qian, Miao, Ji-Bin, Qian, Jia-Sheng, Chen, Peng, Shi, You, Tu, You-Lei
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Cooling rate
Enthalpy
Industrial Chemistry/Chemical Engineering
Liquid phases
Morphology
Original Paper
Phase separation
Polymer films
Polymer Sciences
Polyvinylidene fluorides
Quenching
Temperature distribution
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Thermally-induced phase separation (TIPS) was used to fabricate polyvinylidene fluoride (PVDF) films under different quenching conditions. Temperature gradient fields were in-situ formed inside the films through varying the TIPS quenching temperature, and an enthalpy transformation method (ETM) was adopted to simulate the temperature gradient fields during the TIPS process. Our findings showed that there existed liquid–liquid phase separation (LLPS) even at higher PVDF concentration (e.g., above the monotectic point). The coexistence and competition between liquid–liquid and solid–liquid phase separations were significantly determined by the cooling rate, which helped to explain the formation mechanisms of hierarchical morphologies observed in the final TIPS films. The present work will be of substantial importance to further studies on an industrial tuning of the microstructure and performance of TIPS films through the operational parameter control.
ISSN:1022-9760
1572-8935
DOI:10.1007/s10965-021-02670-3