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Journal of Composite Materials, Vol. 42, No. 6, 593-601 (2008)
DOI: 10.1177/0021998307086197
© 2008 SAGE Publications

Flexural Properties of Ridge Gourd/ Phenolic Composites and Glass/Ridge Gourd/Phenolic Hybrid Composites

A. Varada Rajulu

Department of Polymer Science and Technology Sri Krishnadevaraya University, Anantapur-515003, India, arajulu{at}rediffmail.com

R. Rama Devi

Department of Polymer Science and Technology Sri Krishnadevaraya University, Anantapur-515003, India

Ridge gourd/phenolic and glass/ridge gourd/phenolic hybrid composites were prepared using resol resin PF-108 as the matrix and the bilayered vegetable fabric ridge gourd as the reinforcement without and with alkali treatment and glass fabric as a co-reinforcement. The natural bilayer fabric of ridge gourd vegetable belonging to the Cucurbitaceae family was treated with 2% aqueous NaOH solution. The flexural strength and modulus of untreated and alkali treated ridge gourd fabric reinforced resol type (PF-108) composites and glass, ridge gourd fabric reinforced resol type (PF-108) hybrid composites in the absence and presence of two coupling agents were also determined.

Key Words: ridge gourd • luffa acutangula • resol resin • glass fabric • hybrid composites • flexural properties • coupling agent.


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