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A Study of Specific Heat Capacity Functions of Polyvinyl Alcohol–Cassava Starch Blends

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Abstract

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 (70 mass% CSS) and PPV46 (60 mass% 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 > 0.992. For 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 + 0.061T, where T is the temperature (in K).

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Authors and Affiliations

  1. Department of Polymer Engineering, Faculty of Chemical and Natural Resources Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia

    Lee Tin Sin, W. A. W. A. Rahman, A. R. Rahmat & M. S. N. Salleh

  2. Department of Mechanical Engineering, College of Science and Technology, Universiti Teknologi Malaysia, International Campus, Jalan Semarak, 54100, Kuala Lumpur, Malaysia

    N. A. Morad

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  1. Lee Tin Sin
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  2. W. A. W. A. Rahman
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  3. A. R. Rahmat
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  4. N. A. Morad
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  5. M. S. N. Salleh
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Correspondence to Lee Tin Sin.

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Sin, L.T., Rahman, W.A.W.A., Rahmat, A.R. et al. A Study of Specific Heat Capacity Functions of Polyvinyl Alcohol–Cassava Starch Blends. Int J Thermophys 31, 525–534 (2010). https://doi.org/10.1007/s10765-010-0744-6

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  • DOI: https://doi.org/10.1007/s10765-010-0744-6

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