NC State
BioResources
Yao, J., Lu, W., Rong, S., and Hu, Y. (2013). "Mechanical properties evaluation of coir toughened unsaturated polyester with different reinforced body forms," BioRes. 8(3), 3336-3346.

Abstract

Unsaturated polyester (UPE) composites reinforced with natural fiber as non-structural materials have been used in engineering.In this study, three different types of coir-reinforced UPE consisting of coir non-woven needle mat (CNM), coir mesh (CM), and coir rope (CR) were produced , and the mechanical properties, such as flexural strength (FS), tensile strength (TS), and impact toughness (IT), were investigated. With the exception of FS, CR-reinforced UPE composites exhibited better mechanical properties, mainly due to good directionality of the coir fibers. Dynamic mechanical analysis (DMA) was also carried out to analyze the composite performances under wide temperature ranges. All the tests confirmed the beneficial effect of coir on the UPE matrix, noting that composites with higher toughness perform better in most applications.
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