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Self‐healing hydrogel of poly(vinyl alcohol)/graphite oxide with p H ‐sensitive and enhanced thermal properties
Author(s) -
Wang Sui,
Zhang Zheng,
Chen Bing,
Shao Jia,
Guo Zhiyong
Publication year - 2018
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.46143
Subject(s) - vinyl alcohol , self healing hydrogels , self healing , materials science , thermal stability , graphite oxide , swelling , chemical engineering , rheology , polymer chemistry , graphite , composite material , polymer , medicine , alternative medicine , pathology , engineering
Supramolecular hydrogel is a fascinating polymeric material composed of three‐dimensional noncovalent networks with many outstanding properties, especially reversible relevant performances. A self‐healing supramolecular hydrogel of poly(vinyl alcohol)/graphite oxide, with reversible pH responsiveness and good thermal stability, was prepared. The morphology, functional group changes, swelling performance, thermal stability, rheological performance, and self‐healing property of the PVA/GO hydrogel were investigated. A probable mechanism between the components and potential applications were also examined in our study. The experimental results show that the PVA/GO hydrogel was not only self‐healable without external stimulus or addition of any healing agents, but also pH sensitive and with good thermal stability. Green ingredients (PVA and GO) and a simple synthesis method (a freezing/thawing treatment) may pose little threat to the environment and also promote the production of such hydrogels. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018 , 135 , 46143.