Poly(ester amide)s from poly(alkylene succinate)s and rapid crystallizing amido diols: Synthesis, thermal properties and crystallization behavior

authors	Kluge, M; Rennhofer, H; Lichtenegger, HC; Liebner, FW; Robert, T
nationality	International
journal	EUROPEAN POLYMER JOURNAL
author keywords	Poly(ester amide); Succinic acid; Thermal properties; Microstructure; Amido diol; Bio-based polymer
keywords	POLY(BUTYLENE SUCCINATE); ALIPHATIC POLY(ESTER-AMIDE)S; COPOLYESTERS; DEGRADATION; COPOLYMERS; PBS; POLYESTERS; KINETICS; BLOCKS; ACID
abstract	Random poly(ester amide)s are synthesized from succinic acid, ethylene glycol or 1,4-butanediol and different aliphatic amido diols - symmetric alpha,omega-diols containing two amide moieties. The formation of chain-terminating N-succinimide end groups, which limit the molecular weight attainable by common synthetic strategies, is effectively suppressed. Poly(ester amide)s crystallize in a suprastructure similar to that of even-even polyamides. The thermal properties of both types of poly(ester amide)s synthesized are considerably improved and transition temperatures are tunable by changing the ratio of aliphatic diol to rapidly crystallizing amido diol in the feed. Using ethylene glycol as diol component, T-g and T-m of the material could be enhanced from -12 to -2 degrees C and 97 to 157 degrees C, respectively, while an increase from -33 to -8 degrees C and 115-153 degrees C was observed for their 1,4-butanediol derived counterparts. Furthermore, the slow crystallization rate of poly(ethylene succinate) from molten state could be significantly accelerated by the introduction of amide moieties into the polymer backbone.
publisher	PERGAMON-ELSEVIER SCIENCE LTD
issn	0014-3057
isbn	1873-1945
year published	2020
volume	129
digital object identifier (doi)	10.1016/j.eurpolymj.2020.109622
web of science category	Polymer Science
subject category	Polymer Science
unique article identifier	WOS:000525883800013