Eutectic Melting Behavior of Polyamide 10,T-co-6,T and 12,T-co-6,T Copolyterephthalamides
Document Type
Article
Publication Date
5-14-2010
Department
Chemistry and Biochemistry
School
Mathematics and Natural Sciences
Abstract
Semi-aromatic polyterephthalamides 10,T and 12,T were synthesized with 0-60 wt-% PA-6,T comonomer by a melt polycondensation process. Molecular weights of the copolymers ranged from 12,000 to 27,000 g/mol and all produced tough melt-pressed films. The substituted aromatic carbon of the (13)C NMR spectra revealed that comonomer sequences are statistical: e.g., 50:50 wt-% PA-12,T-co-6,T copolymer had 12,T-12,T:12,T-6,T:6,T-6,T sequence ratios of approximately 1:2:1. Copolymers of both PA-10,T and 12. T exhibited a eutectic melting point at 30 wt-% PA-6,T, with melting points decreasing linearly from 315 and 292 degrees C to minima of 280 and 272 degrees C, respectively. Melting enthalpies showed similar minima at ca. 35 wt-% PA-6,T. WAXD and DMA were used to further characterize the eutectic behavior, and a comprehensive analysis of PA-6,T copolymer melting behavior is given. (C) 2010 Elsevier Ltd. All rights reserved.
Publication Title
Polymer
Volume
51
Issue
11
First Page
2417
Last Page
2425
Recommended Citation
Novitsky, T. F.,
Lange, C.,
Mathias, L. J.,
Osborn, S.,
Ayotte, R.,
Manning, S.
(2010). Eutectic Melting Behavior of Polyamide 10,T-co-6,T and 12,T-co-6,T Copolyterephthalamides. Polymer, 51(11), 2417-2425.
Available at: https://aquila.usm.edu/fac_pubs/12567