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http://repository.kln.ac.lk/handle/123456789/10085
Title: | Dilution wave and negative-order crystallization kinetics of chain molecules |
Authors: | Ungar, G. Mandal, P.K. Higgs, P.G. de Silva, D.S.M. Boda, E. Chen, C.M. |
Issue Date: | 2000 |
Publisher: | Physical Review Letters |
Citation: | Ungar, G., Mandal, P.K., Higgs, P.G., de Silva, D.S.M., Boda, E. and Chen, C.M. 2000. Dilution wave and negative-order crystallization kinetics of chain molecules. Physical Review Letters 85, 4397-4400. |
Abstract: | We show that the crystal growth rate of a very long-chain n-alkane C198H398 from solution can decrease with increasing supersaturation and follow strongly negative order kinetics. The experimental behavior can be well represented by a theoretical model which allows the molecule to attach and detach as either extended or folded in two. The obstruction of extended-chain growth by unstable folded depositions increases disproportionately with increasing concentration. As a consequence of this abnormal kinetics, a “dilution wave” can propagate and trigger a folded-to-extended-chain transformation on its way. |
URI: | http://repository.kln.ac.lk/handle/123456789/10085 |
ISSN: | http://focus.aps.org/story/v6/st21 |
Appears in Collections: | Chemistry |
Files in This Item:
File | Description | Size | Format | |
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Dilution wave.pdf | 171.54 kB | Adobe PDF | View/Open |
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