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Surface free energy analysis of poly(vinyl alcohol) films having various molecular parameters
Author(s) -
Kim Joon Ho,
Shin Dong Soo,
Han Man Ho,
Kwon Oh Wook,
Lee Hyun Kyu,
Lee Se Geun,
Ghim Han Do,
Park Joo Min,
Han Sung Soo,
Noh Seok Kyun,
Lyoo Won Seok
Publication year - 2007
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.26010
Subject(s) - vinyl alcohol , saponification , tacticity , polymer chemistry , surface energy , materials science , vinyl acetate , contact angle , alcohol , chemical engineering , chemistry , polymer , organic chemistry , copolymer , composite material , engineering , polymerization
Abstract The molecular parameters of poly(vinyl alcohol) have enormous effects on its physical and chemical properties. Therefore, the surface characteristics of poly(vinyl alcohol) films are also determined by the molecular parameters. In this study, the dependence of the surface free energy on the molecular weight, degree of saponification, and stereoregularity of poly(vinyl alcohol) films has been evaluated with contact‐angle measurements. The surface free energy of poly(vinyl alcohol) films increases with decreases in the syndiotactic dyad content, molecular weight, and degree of saponification. The polar component of the surface energy is not affected by the deviation of the molecular weight and degree of saponification very much. However, it decreases with increases in the syndiotactic dyad content and ranges from 11.64 to 4.35 dyn/cm. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007