Journal
ADVANCED COMPOSITE MATERIALS
Volume 22, Issue 6, Pages 437-449Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/09243046.2013.843830
Keywords
electron beam irradiation; worm silk fibers; poly(butylene succinate); green composites; thermomechanical properties; mechanical properties
Categories
Funding
- Nuclear R and D program through the National Research Foundation - Ministry of Science, ICT and Future Planning, Korea [NRF-2012M2A2A6035747]
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The effect of electron beam treatment on the thermomechanical and flexural properties of chopped silk fiber-reinforced poly(butylene succinate) (PBS) green composites was studied for the first time in this work. The surface topological changes in worm silk fibers before and after the electron beam irradiation at various doses (5-100 kGy) were observed. Dynamic mechanical and flexural properties and thermal expansion behavior of neat PBS and silk/PBS green composites were investigated by means of dynamic mechanical analysis, three-point flexural test, and thermomechanical analysis. The irradiated silk/PBS composite result was compared with neat PBS and un-irradiated silk/PBS counterparts. It was concluded that use of electron beam irradiation at an appropriate dosage may contribute to an enhancement of the dynamic mechanical and flexural properties as well as to the thermodimensional stability of silk-based green composites. The result revealed that the property enhancement was most profound at the electron beam absorption dose of 20 kGy.
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