期刊
CARBOHYDRATE POLYMERS
卷 50, 期 4, 页码 429-434出版社
ELSEVIER SCI LTD
DOI: 10.1016/S0144-8617(02)00123-6
关键词
potato starch; recovered vegetable oil; esterification
The main components ( 90%) in recovered vegetable oil (RVO) are esters of higher carboxylic acids and glycerol (triglycerides) which consist of three fatty acids: oleic (C18: 1, Z), palmitic (C16:0) and linoleic (C18:2, Z) in the ratio 2.8:1.4:1. RVO may provide a low cost new supply of unsaturated fatty acid chlorides. Modification of potato starch using the mixture of fatty acid chlorides derived from RVO and using acid chlorides of the two major pure component acids has been performed. Films were prepared from the starch esters and mechanical properties tested. Commercially available potato starch, modified to DS-value 1.5 with RVO-derived acyl chlorides, was thermoplastic with a maximum tensile strength of 1.4 MPa and an elongation at break of 54%. (C) 2002 Elsevier Science Ltd. All rights reserved.
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