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Biodegradable low density polyethylene (LDPE)/starch packaging films

Rasit Ali, Roshafima and Wan Abdul Rahman , Wan Aizan (2007) Biodegradable low density polyethylene (LDPE)/starch packaging films. In: The International Conference on Advancement of Materials and Nanotechnology 2007,, 29 May-1 Jun 2007, Bayview Hotel, Langkawi. (Submitted)

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In this study, sago starch was physically blended with LDPE via two-roll mill to produces LDPE/sago starch (SS) biodegradable films. Glycerol was added to the blends as a plasticizer to increase the compatibility of sago starch and LDPE, which also subsequently reduced the brittleness of the film. Melt flow index of the blends was measured to determine the rheological properties and the viability of the blends to undergo blow film process. Mechanical and morphology studies of LDPE/SS biofilms have been done by tensile testing machine and microscopy respectively. Exposure of LDPE/SS biofilms to the fungi environment was done to analyse the biodegradability of the blends. Results showed, melt flow index of LDPE/SS biofilm decreased as the content of the starch increased. The mechanical properties such as tensile strength and elongation also decreased as the starch content increased. However, biodegradability of the films increased as the starch content increased as it can be seen by fungi growth on the surface of LDPE/SS biofilms.

Item Type:Conference or Workshop Item (Speech)
Uncontrolled Keywords:Biodegradable films, low-density polyethylene, plastic packaging, sago starch, two-roll mill blending
Subjects:T Technology > TP Chemical technology
Divisions:Chemical and Natural Resources Engineering (Formerly known)
ID Code:3577
Deposited By: Dr Abdul Razak Rahmat
Deposited On:12 Jun 2007 01:36
Last Modified:01 Jun 2010 03:10

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