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Title: Injection molded composites from kenaf and recycled plastic

Author: Chow, Poo.; Bajwa, Dilpreet S.; Lu, Wen-da.; Youngquist, John A.; Stark, Nicole M.; Li, Qiang.; English, Brent.;

Date: 1998

Source: [Proceedings of 1st annual American Kenaf Society Meeting, San Antonio, TX. S.l. : s.n, 1998?].:p. 38-42.

Publication Series: Miscellaneous Publication

Description: Kenaf-based thermoplastic composites were developed and evaluated in this study. The kenaf stems were collected from farms in central Illinois. The kenaf fibers were blended with commercial virgin plastic or polypropylene and with recycled plastics or low-cost polyethylene in form of post-consumer film wastes and shrink wraps. Investigations on the fiber properties and chemical compositions of kenaf stems showed that they can be viably utilized as substitute for wood flour fillers. Manufacturing tests conducted at the U.S. Forest Products Laboratory showed that kenaf stems can be used as filler in virgin plastics to yield impact properties similar to wood-filled composites. Ultimate mechanical and dimensional stability test conducted at the University of Illinois showed that virgin plastics filled with 40% kenaf fibers are the most promising blends. The flexural properties of the resulting products were higher or within the range of extruded and injection molded grades that use commercial resins and wood flours. The deficiency of the kenaf-based composites was the low tensile strength which suggests that they should not be utilized in systems requiring high tensile property. This study had met most of its initial goals of discovering commercial uses of kenaf fibers in Illinois. Kenaf stems fibers are very feasible alternatives to wood fibers and could be utilized to reduce the cost of producing traditional thermoplastic composites. Recyclable and environmental-friendly products could be produced from kenaf fibers with potential used in industries like the container and the automotive industry.

Keywords: Composite boards, Thermoplastics, Recycling, Kenaf, Fibers, Polypropylenes, Molded products, Polyethylene, Illinois

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Chow, Poo.; Bajwa, Dilpreet S.; Lu, Wen-da.; Youngquist, John A.; Stark, Nicole M.; Li, Qiang.; English, Brent. 1998. Injection molded composites from kenaf and recycled plastic. [Proceedings of 1st annual American Kenaf Society Meeting, San Antonio, TX. S.l. : s.n, 1998?].:p. 38-42.

 


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