TY - JOUR
T1 - Measurement of glass transition temperature by mechanical (DMTA), thermal (DSC and MDSC), water diffusion and density methods
T2 - A comparison study
AU - Rahman, Mohammad Shafiur
AU - Al-Marhubi, Insaaf Mohd
AU - Al-Mahrouqi, Abdullah
N1 - Funding Information:
The project was supported by the Sultan Qaboos University, Sultanate of Oman.
PY - 2007/6/8
Y1 - 2007/6/8
N2 - Glass transition measured by DMTA from the change in slope in storage modulus was 55 °C, which was 10.5 °C lower than the value measured by tan δ peak. Initial glass transition measured by DSC, increased exponentially and reached a constant value of 55 °C at or higher heating rate of 30 °C/min. Transition temperature, measured by MDSC, remained constant up to heating rate 15 °C/min and then decreased. The glass transition values determined from reversible heat flow was 60 °C. The break in diffusivity and density (i.e. volume) was observed at 50 °C below the glass transition temperature measured by thermal and mechanical methods.
AB - Glass transition measured by DMTA from the change in slope in storage modulus was 55 °C, which was 10.5 °C lower than the value measured by tan δ peak. Initial glass transition measured by DSC, increased exponentially and reached a constant value of 55 °C at or higher heating rate of 30 °C/min. Transition temperature, measured by MDSC, remained constant up to heating rate 15 °C/min and then decreased. The glass transition values determined from reversible heat flow was 60 °C. The break in diffusivity and density (i.e. volume) was observed at 50 °C below the glass transition temperature measured by thermal and mechanical methods.
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U2 - 10.1016/j.cplett.2007.04.067
DO - 10.1016/j.cplett.2007.04.067
M3 - Article
AN - SCOPUS:34249089537
VL - 440
SP - 372
EP - 377
JO - Chemical Physics Letters
JF - Chemical Physics Letters
SN - 0009-2614
IS - 4-6
ER -