Journal
INDUSTRIAL CROPS AND PRODUCTS
Volume 33, Issue 1, Pages 35-41Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.indcrop.2010.08.007
Keywords
Biocomposites; Soyprotein; Plasticizers; Natural fibers
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Funding
- Agricultural Research Division at the University of Nebraska-Lincoln
- USDA [S1026]
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Soyprotein-jute fiber composites developed using water without any chemicals as the plasticizer show much better flexural and tensile properties than polypropylene-jute composites. Co-products of soybean processing such as soy oil, soyprotein concentrate and soy protein isolates are inexpensive, abundantly available and are renewable resources that have been extensively studied as potential matrix materials to develop biodegradable composites. However, previous attempts on developing soy-based composites have either chemically modified the co-products or used plasticizers such as glycerol. Chemical modifications make the composites expensive and less environmentally friendly and plasticizers decrease the properties of the composites. In this research, soyprotein composites reinforced with jute fibers have been developed using water without any chemicals as plasticizer. The effects of water on the thermal behavior of soyproteins and composite fabrication conditions on the flexural, tensile and acoustic properties of the composites have been studied. Soyprotein composites developed in this research have excellent flexural strength, tensile strength and tensile modulus, much higher than polypropylene (PP)-jute fiber composites. The soyprotein composites have better properties than the PP composites even at high relative humidity (90%). (C) 2010 Elsevier B.V. All rights reserved.
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