PERCENT CRYSTALLINITY OF DEGRADABLE HDPE PLASTIC FILM

Supreya Trivijitkasem, Chorawut T.thenprasert, Thanate Sukkamat
*Department of Physics, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand;
e-mail address : palida_s@hotmail.com

         High density polyethylene, HDPE, commercial grade, mixed with dried starch of 0, 5%, 10% and 30% weight, were studied by differential scanning calorimetry (DSC). The sample was heated from 25 °C to 160 °C and then cooled down from 160 °C to 25 °C at a constant rate of 10 °C /min. The DTA data showed lower melting temperature, heat of fusion, heat capacity and crystallinity as the composition of dried starch was increased, but the crystallinity temperature was increased.

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Fig. (a) DSC heating and (b) DSC cooling curves of the specimens.

 
 
 

 

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