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Journal of Applied Sciences and Environmental Management
World Bank assisted National Agricultural Research Project (NARP) - University of Port Harcourt
ISSN: 1119-8362
Vol. 9, No. 1, 2005, pp. 75-78
Bioline Code: ja05013
Full paper language: English
Document type: Research Article
Document available free of charge

Journal of Applied Sciences and Environmental Management, Vol. 9, No. 1, 2005, pp. 75-78

 en Caladium bicolor check for this species in other resources and Wild Dioscorea dumetorum check for this species in other resources Starches As Dual Purpose Polymer Additive
SAVIOUR A. UMOREN

Abstract

Increased elastic modulus and ultimate tensile strength of low density polyethylene has been achieved by incorporating Caladium bicolor check for this species in other resources (ornamental cocoyam) and wild Dioscorea dumetorum check for this species in other resources (sweet yam) starches into low density polyethylene using a standard hot-melt compounding technique. Some mechanical properties of compression moulded dumb bell shaped films of low density polyethylene containing up to a maximum of 20 wt % of each starch is reported. Increased density of the composite with time after being buried for a total of 12 weeks in composting environment is an evidence of the degradation of LDPE which may be linked to an initial breakdown of starch by microorganism in the soil which probably give rise to diffusion of unsaturated lipids into the porous polymer resulting in degradation by auto-oxidation. @JASEM

 
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