Manufacturing and Characterization of High Impact Polystyrene (HIPS) Reinforced with Treated Sugarcane Bagasse

Kelly Cristina Coelho de Carvalho Benini; Herman Jacobus Voorwald; Maria Odila Hilá¡rio Cioffi

doi:10.6000/1929-5995.2017.06.01.1

Authors

Kelly Cristina Coelho de Carvalho Benini Fatigue and Aeronautical Materials Research Group, Department of Materials and Technology, UNESP - Univ. Estadual Paulista, 12516-410 Guaratinguetá, São Paulo, Brazil
Herman Jacobus Voorwald Fatigue and Aeronautical Materials Research Group, Department of Materials and Technology, UNESP - Univ. Estadual Paulista, 12516-410 Guaratinguetá, São Paulo, Brazil
Maria Odila Hilá¡rio Cioffi Fatigue and Aeronautical Materials Research Group, Department of Materials and Technology, UNESP - Univ. Estadual Paulista, 12516-410 Guaratinguetá, São Paulo, Brazil

DOI:

https://doi.org/10.6000/1929-5995.2017.06.01.1

Keywords:

High impact polystyrene, Mechanical properties, Thermal properties, Sugarcane Bagasse fibers.

Abstract

Natural fibers obtained from sugarcane bagasse were used as reinforcement for high impact polystyrene (HIPS) composites. Fibers were chemically treated with an alkaline solution and then bleached with sodium chlorite and acetic acid, in order to remove amorphous constituents and improve adhesion with polimeric matrix.The alkali-treated and bleached fibers over a range of 10-30 wt% were mixed with HIPS and placed in an injector chamber in order to obtain tensile and flexural test specimens. Chemical treatment effects on composites properties were evaluated through mechanical tests and thermal and microscopy analysis. Experimental results show that composites with 30 wt% of alkali-treated fibers present an improvement in the tensile strength (17%), tensile modulus (96%) and flexural modulus (34%) with a consequent decrease in the ductility and in the thermal properties in comparisson to pure HIPS. An huge increase of 191% in the flexural modulus for composites with 30 wt% of bleached fibers was obtained compared to pure HIPS.

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