Freezing-Tolerant Hydrogel Composed of Sulfonated Chitosan and Poly(vinyl alcohol) Featuring Excellent Stretchability and High Proton Conduction

2022 ◽  
Author(s):  
Qiao Qiao ◽  
Zhi-Rong Feng ◽  
Ya-Ru Kong ◽  
Yu-Ping Wu ◽  
Xiao-Ming Ren
Keyword(s):  
Vinyl Alcohol ◽  
Proton Conduction ◽  
Poly Vinyl Alcohol ◽  
High Proton

Proton conduction in new polymer hydrogel films consisting of crosslinking partially phosphorylated poly(vinyl alcohol)s

1999 ◽  
Vol 1 (11) ◽  
pp. 2749-2753 ◽  
Author(s):  
Masahiro Suzuki ◽  
Takahide Yoshida ◽  
Satoshi Kobayashi ◽  
Toshiki Koyama ◽  
Mutsumi Kimura ◽  
...  
Keyword(s):  
Vinyl Alcohol ◽  
Proton Conduction ◽  
Poly Vinyl Alcohol ◽  
Polymer Hydrogel ◽  
Hydrogel Films

Sulfonated poly (arylene ether sulfone)-graft-sulfonated poly (vinyl alcohol) proton exchange membranes: Improved proton selectivity

2020 ◽  
pp. 095400832096816
Author(s):  
Hailin Yu ◽  
Yinghan Wang
Keyword(s):  
Vinyl Alcohol ◽  
Substitution Reaction ◽  
Proton Exchange Membranes ◽  
Proton Exchange ◽  
Methanol Permeability ◽  
Poly Vinyl Alcohol ◽  
H Nmr ◽  
Arylene Ether ◽  
High Proton ◽  
Sulfonated Poly

Aldehyde terminated sulfonated poly (arylene ether sulfone) (SPAES-CHO) is prepared by a series of nucleophilic substitution reaction based on SPAES in this paper. Novel SPAES-graft-SPVA (SPAES-g-SPVA) membranes are fabricated by acetal reaction between SPAES-CHO and different amounts of sulfonated poly (vinyl alcohol) (SPVA). The 1H-NMR and FTIR indicate the successful preparation of SPAES-CHO and SPAES-g-SPVA membranes. With the introduction of SPVA, the SPAES-g-SPVA membranes have much lower methanol permeability than pure SPAES membrane and Nafion117 membrane. The methanol permeability coefficients of the SPAES-g-SPVA membranes decrease from 3.41 × 10−7 cm2 s−1 to 1.67 × 10−7 cm2 s−1 with the increase of SPVA content. And the proton conductivity of all the membranes is higher than 15 mS cm−1 at 25°C. Moreover, SPAES-g-SPVA membranes exhibit high proton selectivity. Especially, SPAES-g-SPVA-30% membrane has the highest proton selectivity, which is nearly five times higher than Nafion117.

High modulus poly (vinyl alcohol) fibers by zone drawing

1986 ◽  
Vol 1 (6) ◽  
pp. 861-869 ◽  
Author(s):  
Paul D. Garrett ◽  
David T. Grubb
Keyword(s):  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
High Modulus

BIODEGRADATION BEHAVIOR OF POLY(VINYL ALCOHOL) - WOOD COMPOSITES

2019 ◽  
Vol 18 (1) ◽  
pp. 125-136 ◽  
Author(s):  
Luiza Jecu ◽  
Iuliana Raut ◽  
Elena Grosu ◽  
Mariana Calin ◽  
Violeta Purcar ◽  
...  
Keyword(s):  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Wood Composites
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