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Morphology and local chain structure of polyamide 6 modified in the solid state with a semi-aromatic nylon salt
Abstract
Structural and conformational differences between the polyamide 6 (PA6) homopolymer and two copolymers of PA6 modified in the solid state with 20 and 30 wt% of the semi-aromatic nylon salt of 1,5-diamino-2-methylpentane (Dytek A) and isophthalic acid (IPA) in the feed were investigated. Room temperature wide-angle X-ray diffraction (WAXD) analysis together with 13C{1H} cross-polarization/magic-angle spinning solid-state (CP/MAS) NMR and 2D 13C{1H} FSLG-HETCOR experiments showed that there is no co-crystallization of the Dytek A-isophthalic acid (DyI) salt with the PA6 repeat units. A steady decrease of the degrees of crystallinity with increasing amount of the incorporated DyI salt was proven. Upon heating of the samples a transformation of trans conformers into gauche conformers of the polymer chain fragments was observed both by performing temperature-dependent FT-IR and solid-state NMR experiments.
Citations
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Authors (5)
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Seda Cakir
- . .
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Maurizio Villani
- . .
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Michael Ryan Hansen
- . .
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C.e. Koning
- . .
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Keywords
Details
- Category:
- Articles
- Type:
- publikacja w in. zagranicznym czasopiśmie naukowym (tylko język obcy)
- Published in:
-
Materials Today Communications
no. 2,
pages 62 - 69,
ISSN: 2352-4928 - Language:
- English
- Publication year:
- 2015
- Bibliographic description:
- Cakir S., Jasińska-Walc L., Villani M., Hansen M., Koning C.. Morphology and local chain structure of polyamide 6 modified in the solid state with a semi-aromatic nylon salt. Materials Today Communications, 2015, Vol. 2, , s.62-69
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.mtcomm.2014.12.002
- Verified by:
- Gdańsk University of Technology
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