SURANGA, P. A., WICKRAMARACHCHI, P. A. S. R., SPELLS, S. and DE SILVA, D. S. M. (2006). Study of disorder in different phases of tetratriacontane and a binary alkane mixture using vibrational spectroscopy. Journal of physical chemistry B, 111 (7), 1604-1609.Full text not available from this repository.
Raman spectroscopy has been used to investigate the monoclinic crystal f rotator f melt phase transitions in n-C34H70, for both real-time heating and cooling runs. Changes in band intensity and frequency in the CH2 bending, CH2 twisting, skeletal C-C stretching, and CH3 rocking regions revealed both transitions, particularly when using band components related to gauche bonds. In the room temperature infrared spectrum, the CH2 rocking-twisting and CH2 wagging progressions were observed and indexed for n-C34H70 and a 2:1 (w/w)mixture of C34H70 and C36D74. This led to best estimates for the all-trans crystal core in both cases of 33 to 34 carbon atoms, indicating that the core corresponds to almost the whole of the C34H70 molecule.
|Research Institute, Centre or Group:||Materials and Engineering Research Institute > Polymers Nanocomposites and Modelling Research Centre > Polymers, Composites and Spectroscopy Group|
|Depositing User:||Ann Betterton|
|Date Deposited:||08 Aug 2007|
|Last Modified:||09 Aug 2010 14:07|
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