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Poly(vinyl alcohol)‐clay and poly(ethylene oxide)‐clay blends prepared using water as solvent
Author(s) -
Ogata Nobuo,
Kawakage Sugio,
Ogihara Takashi
Publication year - 1997
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/(sici)1097-4628(19971017)66:3<573::aid-app19>3.0.co;2-w
Subject(s) - vinyl alcohol , ethylene oxide , materials science , solvent , polymer chemistry , poly ethylene , oxide , alcohol , chemical engineering , ethylene , composite material , organic chemistry , chemistry , copolymer , polymer , engineering , metallurgy , catalysis
Montmorillonite (MON) was solvent‐cast blended with poly(vinyl alcohol) (PVA) and poly(ethylene oxide) (PEO) using water as cosolvent. The structure and properties of the blend films have been investigated. From small‐ and wide‐angle X‐ray scattering measurements of the blends, the silicate layers of MON are found to be well dispersed individually in the PVA‐MON blends, while the silicate layers in PEO‐MON blends are found to exist in the form of a large clay tactoid. Furthermore, for both blends, it is found that the silicate layers are parallel to the film surface of the blends, and that preferred orientation of polymer crystallites is induced by the presence of MON. The effects of the MON content on the thermal behavior of the PVA‐ and PEO‐MON blends have been studied with a differential scanning calorimeter. Furthermore, the effects of geometry of the silicate layers on dynamic behavior of the blends have been studied. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 66: 573–581, 1997