Thermal analysis of natural rubber Hevea brasiliensis latex
2000
Hamdan S. | Hashim D. M. A. | Muhamad M. | Hassan J.
Thermal analysis of the natural rubber Hevea brasiliensis latex (NRL) with different moisture content was characterised using differential scanning calorimeter. The analysis was done between -100°C to 150°C. The thermal characteristics investigated are the glass transition temperature Tg, the boiling point of free-water Tf and bound-water Tb. Results showed that Tg for both dried concentrated rubber latex and dried NRL are similar, i.e. -56.84°C, and-56.57°C, respectively while Tg for diluted NRL was not detected. The existence of moisture shifted the Tf in diluted NRL towards a higher temperature which was similar to the thermogram of de-ionised water.
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Эту запись предоставил Universiti Putra Malaysia