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2013•Journal of Functional BiomaterialsOpen access

Effect of BF mass fraction on properties of BF reinforced polylactic acid composites

LI Xingon

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Abstract

Bamboo fiber reinforced polylactic acid composites was prepared by injection molding technology with polylactic acid and the bamboo fiber modified with 1.5% isocyanate(MDI)interfacial modifier.Effect of BF mass fraction on interface,mechanical property,water absorption and thermal property of composites were investigated.The results showed that tensile strength,impact strength,storage modulus and thermal stability of composites first increased and then decreased with increase of BF mass fraction,24h water absorption gradually increased,loss factor gradually increased.When BF mass fraction was 50%,tensile strength and impact strength of composites arrived the maximum of 63.2MPa and 11.6kJ/m2,respectively,composites presented the highest storage modulus and the best the thermal stability.

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What this paper is about

Bamboo fiber reinforced polylactic acid composites was prepared by injection molding technology with polylactic acid and the bamboo fiber modified with 1.5% isocyanate(MDI)interfacial modifier.Effect of BF mass fraction on interface,mechanical property,water absorption and thermal property of composites were investigated.The results showed that tensile strength,impact strength,storage modulus and thermal stability of composites first increased and then decreased with increase of BF mass fraction,24h water absorption gradually increased,loss factor gradually increased.When BF mass fraction was 50%,tensile strength and impact strength of composites arrived the maximum of 63.2MPa and 11.6kJ/m2,respectively,composites presented the highest storage modulus and the best the thermal stability.

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Available abstract

Bamboo fiber reinforced polylactic acid composites was prepared by injection molding technology with polylactic acid and the bamboo fiber modified with 1.5% isocyanate(MDI)interfacial modifier.Effect of BF mass fraction on interface,mechanical property,water absorption and thermal property of composites were investigated.The results showed that tensile strength,impact strength,storage modulus and thermal stability of composites first increased and then decreased with increase of BF mass fraction,24h water absorption gradually increased,loss factor gradually increased.When BF mass fraction was 50%,tensile strength and impact strength of composites arrived the maximum of 63.2MPa and 11.6kJ/m2,respectively,composites presented the highest storage modulus and the best the thermal stability.

Key concepts: Polylactic acid, Materials science, Composite material, Mass fraction, Ultimate tensile strength, Thermal stability, Absorption of water, Izod impact strength test

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