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Ecofriendly poly(vinyl alcohol) and coconut shell powder composite films: Physico‐mechanical, thermal properties, and swelling studies
Author(s) -
Ramaraj B.,
Poomalai P.
Publication year - 2006
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.23913
Subject(s) - materials science , vinyl alcohol , swelling , composite material , differential scanning calorimetry , ultimate tensile strength , sunflower oil , composite number , chemical engineering , polymer , chemistry , physics , thermodynamics , biochemistry , engineering
Poly(vinyl alcohol) (PVA) composites with 10, 20, 33, and 50 wt % of coconut shell (CCS) powder were prepared by aqueous mixing. The solution was casted as films and tested for physicomechanical properties such as tensile, tear, burst strengths, density, moisture content, moisture vapor transmission rate, moisture analysis; solubility resistance in water, 5% acetic acid, 50% ethanol, sunflower oil; swelling characteristics in 50% ethanol, sunflower oil; and thermal characteristics by differential scanning calorimetry. The PVA/CCS powder composite films show enhancement in elastic modulus, degradability, solubility resistance in water, 5% acetic acid, 50% ethanol, and moisture resistance. However, the introduction of CCS powder varies the tensile strength and affects percentage of elongation, tear and burst strengths, moisture content, density, and swelling capacity. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 102: 3862–3867, 2006