A DSC STUDY OF CRYSTALLIZATION BEHAVIOR OF POLY(ALPHA-N-ALKYL BETA-L-ASPARTATE)S

Authors
CALVENTUS Y COLOMER P MALEK J MONTSERRAT S LOPEZCARRASQUERO F DEILARDUYA AM MUNOZGUERRA S
Citation
Y. Calventus et al., A DSC STUDY OF CRYSTALLIZATION BEHAVIOR OF POLY(ALPHA-N-ALKYL BETA-L-ASPARTATE)S, Polymer, 40(3), 1999, pp. 801-805
Citations number
18
Categorie Soggetti
Polymer Sciences
Journal title
Polymer → ACNP
ISSN journal
00323861
Volume
40
Issue
3
Year of publication
1999
Pages
801 - 805
Database
ISI
SICI code
0032-3861(1999)40:3<801:ADSOCB>2.0.ZU;2-Y
Abstract
A series of poly(alpha-n-alkyl beta-L-aspartate)s (where n is the numb er of carbon atoms in the linear alkyl side chain, with n = 12, 18 and 22), was studied by differential scanning calorimetry. The effect of the length of alkyl side chain on the non-isothermal crystallization k inetics on cooling was investigated. It was found that the Delta H-c a nd crystallization rate of PAALA samples on cooling increase with the alkyl side chain length. A similar trend is observed for the activatio n energy of the crystallization process. It was found that the Johnson -Mehl-Avrami model cannot be applied for a quantitative description of non-isothermal d.s.c. data corresponding to this crystallization proc ess. (C) 1998 Elsevier Science Ltd. All rights reserved.