Journal
JOURNAL OF APPLIED POLYMER SCIENCE
Volume 102, Issue 2, Pages 1297-1302Publisher
JOHN WILEY & SONS INC
DOI: 10.1002/app.23522
Keywords
natural fabric; epoxy resin; polycarbonate; blend matrix; flexural properties; morphology; alkali treatment
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A uniaxial natural fabric of Hildegardia populifolia was treated with 5% sodium hydroxide solution for 1 h, and the resulting changes were analyzed by polarized and scanning electron microscopic techniques. The untreated and treated H. populfolia fabric was reinforced in epoxy and toughened with 10% polycarbonate. The variation of the flexural strength and flexural modulus with different fabric contents and fiber orienrations was studied. The effect of sodium hydroxide and a silane coupling agent on the flexural properties of the composite was also studied. It was observed that the flexural properties increased on alkali treatment and when the coupling agent was used. The morphology of the cryogenically fractured surfaces indicated good bonding between the matrix and the reinforcement when a coupling agent was used. (c) 2006 Wiley Periodicals, Inc.
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