Colorless and Transparent Polyimide Microporous Film with Excellent Physicochemical Property
4,4′-(4,4′-isopropylidenediphenoxy)bis(phthalic anhydride) (BPADA) as a dianhydride and bis(3-aminophenyl) sulfone (APS) and bis(3-amino-4-hydroxyphenyl) sulfone (APS-OH) as diamines were used to synthesize two types of poly(amic acid) (PAA). Varying amounts (0–5.0 wt%) of water-soluble poly(vinyl a...
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doaj-aac3f0e33fb74c999cc6f001048bd7372021-04-15T23:05:17ZengMDPI AGPolymers2073-43602021-04-01131298129810.3390/polym13081298Colorless and Transparent Polyimide Microporous Film with Excellent Physicochemical PropertyJong Won Kim0Seon Ju Lee1Moon Young Choi2Jin-Hae Chang3Department of Polymer Science and Engineering, Kumoh National Institute of Technology, Gumi 39177, KoreaGraduate School of Carbon Convergence Engineering, Jeonju University, Jeonju 55069, KoreaGraduate School of Carbon Convergence Engineering, Jeonju University, Jeonju 55069, KoreaDepartment of Polymer Science and Engineering, Kumoh National Institute of Technology, Gumi 39177, Korea4,4′-(4,4′-isopropylidenediphenoxy)bis(phthalic anhydride) (BPADA) as a dianhydride and bis(3-aminophenyl) sulfone (APS) and bis(3-amino-4-hydroxyphenyl) sulfone (APS-OH) as diamines were used to synthesize two types of poly(amic acid) (PAA). Varying amounts (0–5.0 wt%) of water-soluble poly(vinyl alcohol) (PVA) were mixed with PAA, and the resulting blend was heat-treated at different stages to obtain the colorless and transparent polyimide (CPI) blend films. The synthesized blended film completely removed water-soluble PVA in water. The possibility as a porous membrane according to the pore size varied according to the amount of PVA was investigated. The dispersibility and compatibility of CPI containing APS-OH monomer were higher than those of the APS monomer. This could be attributed to the hydrogen-bonding interactions between the CPI main chains and PVA. Scanning electron microscopy was conducted to characterize the material. The results revealed that the pore size of the CPI blend film increased as the PVA concentration increased. It was confirmed that uniform pores of μm-size were observed in CPI. The thermal stabilities, morphologies, optical properties, and solubilities of two CPIs obtained using APS and APS-OH monomers were investigated and their properties were compared with each other.https://www.mdpi.com/2073-4360/13/8/1298colorless and transparent polyimidepoly(vinyl alcohol)blendmicroporous filmphysicochemical property |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Jong Won Kim Seon Ju Lee Moon Young Choi Jin-Hae Chang |
spellingShingle |
Jong Won Kim Seon Ju Lee Moon Young Choi Jin-Hae Chang Colorless and Transparent Polyimide Microporous Film with Excellent Physicochemical Property Polymers colorless and transparent polyimide poly(vinyl alcohol) blend microporous film physicochemical property |
author_facet |
Jong Won Kim Seon Ju Lee Moon Young Choi Jin-Hae Chang |
author_sort |
Jong Won Kim |
title |
Colorless and Transparent Polyimide Microporous Film with Excellent Physicochemical Property |
title_short |
Colorless and Transparent Polyimide Microporous Film with Excellent Physicochemical Property |
title_full |
Colorless and Transparent Polyimide Microporous Film with Excellent Physicochemical Property |
title_fullStr |
Colorless and Transparent Polyimide Microporous Film with Excellent Physicochemical Property |
title_full_unstemmed |
Colorless and Transparent Polyimide Microporous Film with Excellent Physicochemical Property |
title_sort |
colorless and transparent polyimide microporous film with excellent physicochemical property |
publisher |
MDPI AG |
series |
Polymers |
issn |
2073-4360 |
publishDate |
2021-04-01 |
description |
4,4′-(4,4′-isopropylidenediphenoxy)bis(phthalic anhydride) (BPADA) as a dianhydride and bis(3-aminophenyl) sulfone (APS) and bis(3-amino-4-hydroxyphenyl) sulfone (APS-OH) as diamines were used to synthesize two types of poly(amic acid) (PAA). Varying amounts (0–5.0 wt%) of water-soluble poly(vinyl alcohol) (PVA) were mixed with PAA, and the resulting blend was heat-treated at different stages to obtain the colorless and transparent polyimide (CPI) blend films. The synthesized blended film completely removed water-soluble PVA in water. The possibility as a porous membrane according to the pore size varied according to the amount of PVA was investigated. The dispersibility and compatibility of CPI containing APS-OH monomer were higher than those of the APS monomer. This could be attributed to the hydrogen-bonding interactions between the CPI main chains and PVA. Scanning electron microscopy was conducted to characterize the material. The results revealed that the pore size of the CPI blend film increased as the PVA concentration increased. It was confirmed that uniform pores of μm-size were observed in CPI. The thermal stabilities, morphologies, optical properties, and solubilities of two CPIs obtained using APS and APS-OH monomers were investigated and their properties were compared with each other. |
topic |
colorless and transparent polyimide poly(vinyl alcohol) blend microporous film physicochemical property |
url |
https://www.mdpi.com/2073-4360/13/8/1298 |
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