Water flux through blends from waste materials: Cellulose acetate (from sugar cane bagasse) with polystyrene (from plastic cups)

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 solven...

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Bibliographic Details
Published in:Journal of applied polymer science 2005-04, Vol.96 (2), p.516-522
Main Authors: Filho, Guimes Rodrigues, da Silva, Ricardo Chagas, da Silva Meireles, Carla, de Assunção, Rosana Maria Nascimento, Otaguro, Harumi
Format: Article
Language:English
Subjects:
amorphous
Applied sciences
blends
cellulose acetate
Exact sciences and technology
membranes
Polymer industry, paints, wood
polystyrene
Technology of polymers
Waste treatment
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Summary: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
ISSN:0021-8995
1097-4628
DOI:10.1002/app.21474