Evaluation of Gamma Radiation on NR/PHBV Blends

Abstract:

Natural rubber (NR) was compounded with polyhydroxybutyrate-co-hydroxyvalerate (PHBV) to improve mechanical properties for making a composite to be used in packaging applications. Gamma radiation technique was used to improve adhesion properties between these materials. The results showed that gamma radiation could induce cross-linking between NR and PHBV. The SEM micrograph illustrated the radiated NR/PHBV blends with gamma dose 5 kGy, 10 kGy and 15 kGy presenting a good adhesion at the blend interface. The investigation by FTIR, showing the appearance of small peaks at 2950 and 2997 cm-1 related to CH3 asymmetric stretching, also confirmed the cross-linking after the exposure of the NR/PHBV blend to gamma radiation. Also, the tensile results supported cross-linking between NR and PHBV. The elongation at break of NR/PHBV blend decreased when increasing dosage of gamma ray from 0 kGy to 15 kGy.

• Periodical: Applied Mechanics and Materials (Volumes 300-301)
• Pages: 1325-1329
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.300-301.1325
• Online since: February 2013
• Authors: Maneewong Chutamas, Jackapon Sunthornvarabhas, Klana Rong Sriroth
• Keywords: Adhesion, Blend, Crosslink, Gamma Radiation, Natural Rubber (NR), Polyhydroxybutyrate-co-Hydroxyvalerate

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