Issue 87, 2017

Synthesis of copolyesters with bio-based lauric diacid: structure and physico-mechanical studies

Abstract

Lauric diacid (LCDA), also known as 1,12-dodecanedioic acid, is used to develop a series of copolyesters along with 1,4-cyclohexanedicarboxylic acid (CHDA) and 1,4-butanediol (BDO). The resulting poly(butylene lauric dicarboxylate-co-butylene 1,4-cyclohexanedicarboxylate) (PBLC) is proved to be a random copolyester with three triad sequences. When the LCDA content increases from 20 to 60 mol%, Tm of the copolyester decreases from 133 to 57 °C. At the same time, the tensile modulus and strength decrease from 94 and 14 MPa to 40 and 5 MPa, respectively. Moreover, the elongation at break also drops from 640 to only 50%. However, further increasing the LCDA content to 80 mol%, the copolyester becomes amorphous with no Tm, and its tensile modulus, strength, and the elongation at break all improve significantly to 68 and 7 MPa, and over 1400%, respectively. More importantly, for the homo-polymer poly(butylene lauric dicarboxylate) (PBL), it has a relatively high Tm of 73 °C compared to that of polycaprolactone (PCL), but lower tensile modulus and strength, and significantly higher ductility, compared to those of PCL, linear low density polyethylene, and polybutylene succinate.

Graphical abstract: Synthesis of copolyesters with bio-based lauric diacid: structure and physico-mechanical studies

Article information

Article type
Paper
Submitted
25 Oct 2017
Accepted
27 Nov 2017
First published
08 Dec 2017
This article is Open Access
Creative Commons BY license

RSC Adv., 2017,7, 55418-55426

Synthesis of copolyesters with bio-based lauric diacid: structure and physico-mechanical studies

M. Chen, N. A. H. Saada, F. Liu, H. Na and J. Zhu, RSC Adv., 2017, 7, 55418 DOI: 10.1039/C7RA11771J

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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