In:
Crystal Research and Technology, Wiley, Vol. 51, No. 10 ( 2016-10), p. 569-574
Abstract:
Typically, the crystallization kinetics behaviour of biodegradable polyester could be described by the Avrami equation; however, for the appropriate application of this equation, some assumptions are required. Under conventional conditions of isothermal crystallization without nucleating agents, homogeneous nucleation is the key factor for the compatibility of this equation. On account of structural characteristics, the homogeneous nucleation of polymers is possibly affected by several factors. In this study, we investigated the isothermal crystallization of four PPDOs end‐capped with amino acids, followed by the Avrami equation analysis. After employing the method reported by Malek and Mitsuhashi, the L‐Gly‐ end‐capped PPDO and L‐Leu‐, L‐Phe‐end‐capped PPDO crystallized at higher temperatures were not suitable for analysis by the Avrami equation. In addition, this result was substantiated by reasoning the polymer chains’ mobility which could be affected by the terminated amino acids’ steric hindrance and crystallization temperatures, subsequently affecting homogeneous nucleation.
Type of Medium:
Online Resource
ISSN:
0232-1300
,
1521-4079
DOI:
10.1002/crat.201600137
Language:
English
Publisher:
Wiley
Publication Date:
2016
detail.hit.zdb_id:
1480828-6
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