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Thermal Properties of Poly(ester amide)s with Isolated, Two Adjacent and Three Adjacent Amide Groups within a Polyester Chain
Author(s) -
Garg Priya,
Keul Helmut,
Klee Doris,
Möller Martin
Publication year - 2009
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200900232
Subject(s) - amide , adipate , polymer chemistry , differential scanning calorimetry , crystallization , polyester , polyamide , glass transition , chemistry , materials science , polymer , organic chemistry , physics , thermodynamics
Differential scanning calorimetry (DSC) was employed to investigate the thermal properties of segmented aliphatic poly(ester amide)s (PEA)s. Three different series of PEAs were synthesized, each containing amide blocks of defined lengths which are randomly placed in the poly(butylene adipate) (PBA) backbone. Thus, the defined amide blocks consist of isolated amide groups, two adjacent amide groups or three adjacent amide groups. The PEAs show glass transition temperatures between −63 and 1 °C, melting temperatures between 28 and 183 °C and crystallization temperatures lie between −0.2 and 148 °C. The types of groups participating in the crystallization process and the length of the amide segments have an influence on the morphology of these polymers.