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A study of specific heat capacity functions of polyvinyl alcohol-cassava starch blends

Lee, Tin Sin and Wan Abdul Rahman, Wan Aizan and Rahmat, Abdul Razak and Morad, Noor Azian and Salleh, Mohd. Shahrul Nizam (2010) A study of specific heat capacity functions of polyvinyl alcohol-cassava starch blends. International Journal of Thermophysics, 31 (3). 525 - 534. ISSN 0195-928X (Print) 1572-9567 (Online)

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Official URL: https://link.springer.com/article/10.1007/s10765-0...


The specific heat capacity (C sp) of polyvinyl alcohol (PVOH) blends with cassava starch (CSS) was studied by the differential scanning calorimetry method. Specimens of PVOH-CSS blends: PPV37 (70mass% CSS) and PPV46 (60mass% CSS) were prepared by a melt blending method with glycerol added as a plasticizer. The results showed that the specific heat capacity of PPV37 and PPV46 at temperatures from 330 K to 530 K increased from (2.963 to 14.995) J ? g-1 ? K-1 and (2.517 to 14.727) J ? g-1 ? K-1, respectively. The specific heat capacity of PVOH-CSS depends on the amount of starch. The specific heat capacity of the specimens can be approximated by polynomial equations with a curve fitting regression >0.99For instance, the specific heat capacity (in J ? g-1 ? K-1) of PPV37 can be expressed by C sp = -17.824 + 0.063T and PPV46 by C sp = -18.047 + 0.0617", where T is the temperature (in K).

Item Type:Article
Uncontrolled Keywords:cassava starch, polyvinyl alcohol, specific heat capacity
Subjects:T Technology > TP Chemical technology
Divisions:Chemical and Natural Resources Engineering
ID Code:22830
Deposited By: Narimah Nawil
Deposited On:02 Sep 2017 08:20
Last Modified:21 Oct 2018 04:29

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