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Water flux through blends from waste materials: Cellulose acetate (from sugar cane bagasse) with polystyrene (from plastic cups)
Author(s) -
Filho Guimes Rodrigues,
da Silva Ricardo Chagas,
da Silva Meireles Carla,
de Assunção Rosana Maria Nascimento,
Otaguro Harumi
Publication year - 2005
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.21474
Subject(s) - materials science , cellulose acetate , crystallinity , differential scanning calorimetry , polystyrene , cellulose , chemical engineering , dichloromethane , nanofiltration , bagasse , fourier transform infrared spectroscopy , membrane , polymer blend , polymer chemistry , polymer , solvent , composite material , chemistry , organic chemistry , pulp and paper industry , copolymer , biochemistry , physics , engineering , thermodynamics
Abstract In the present work we blended cellulose acetate (taken from sugar cane bagasse) (CA) with polystyrene (taken from postconsumer plastic cups) (PS). The blends were produced in the following ratios (w/w) of the polymers: CA 50%/PS 50%, CA 90%/PS 10%, and CA 10%/PS 90%, using dichloromethane as solvent. The blends were characterized by Fourier transform infrared spectroscopy, differential scanning calorimetry, and wide‐angle X‐ray diffraction. The results show that the presence of polystyrene hinders the organization of regions responsible for the crystallinity originally existing in pure cellulose acetate. We also made measurements of water flux through blends, using the Payne cup technique. The flux properties were compared with those obtained for commercial membranes by Osmonix: nanofiltration (SG) and reverse osmosis (CG). The results show that the blend CA 90%/PS 10% presents water vapor flux comparable with that of commercial membranes for nanofiltration (SG). © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 96: 516–522, 2005