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Effects of freezing conditions on the morphology and mechanical properties of clay and polymer/clay aerogels
Author(s) -
Wang Yuxin,
Gawryla Matthew D.,
Schiraldi David A.
Publication year - 2013
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.39143
Subject(s) - materials science , polymer , microstructure , aerogel , vinyl alcohol , composite material , morphology (biology) , compressive strength , chemical engineering , geology , paleontology , engineering
Clay aerogels and poly(vinyl alcohol)/clay aerogels were prepared via an environmental friendly freeze‐drying process. Both mechanical properties and microstructures of the clay aerogels and polymer/clay aerogels were correlated to the freezing conditions. The compressive moduli of these materials increased as the freezing temperature used to produce the aerogels was decreased. Scanning electron microscopic observations suggest that the morphological variations of clay aerogels can be explained by the mechanism of ice templating that produced these structures. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013