Journal
JOURNAL OF COMPOSITE MATERIALS
Volume 44, Issue 24, Pages 2875-2886Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/0021998310371536
Keywords
silane treatment; calcium alginate fiber; composite; interfacial properties; natural fiber
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Calcium alginate fibers were treated with vinyl triethoxy silane [H2C=CH-Si-(OC2H5)(3)] (5%, v/v) to reduce the strong hydrophilic nature of the fiber and also to improve the mechanical and interfacial properties of the calcium alginate fiber reinforced polypropylene (PP) composites (10 wt% fiber). The composites were fabricated by compression molding. The tensile strength, tensile modulus, bending strength, bending modulus, and impact strength of both the composite systems (PP/untreated calcium alginate fiber and PP/silane-treated calcium alginate fiber) were found to be 25 MPa, 1090 MPa, 36 MPa, 1480 MPa, and 17 kJ/m(2) and 31 MPa, 1510 MPa, 48 MPa, 2270 MPa, and 21 kJ/m(2), respectively. Degradation tests of composites were performed for 16 weeks in soil and it was found that the silane treated composites retained almost 84% of its original strength. The interfacial properties of the composite were investigated by using single fiber fragmentation test.
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