Promotion of the γ‐phase of polyamide 6 in its nanocomposite with phosphate glass |
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| Authors: | A Rawal X‐W Fang K Urman D Iverson J U Otaigbe K Schmidt‐Rohr |
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| Institution: | 1. Ames Laboratory and Department of Chemistry, Iowa State University, Ames, Iowa 50014;2. School of Polymers and High Performance Materials, University of Southern Mississippi, Hattiesburg, Mississippi 39406 |
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| Abstract: | The effect of tin fluorophosphate‐glass (Pglass) nanoparticles on the polyamide‐6 (PA6) matrix in Pglass/PA6 hybrids has been investigated by 13C solid‐state nuclear magnetic resonance (NMR). The crystallinity determined by direct‐polarization 13C NMR combined with longitudinal relaxation‐time (T1C) filtering varied between 31 and 44%. T1C‐filtered 13C spectra with cross polarization clearly showed resonances of both the α‐ and γ‐crystalline phases of PA6, typically at ratios near 45:55, while the similarly processed neat polymer contained only the α‐phase. This suggests that the Pglass promotes the growth of the γ‐crystalline phase. © 2008 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 46: 857–860, 2008 |
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| Keywords: | nanocomposites NMR nylon polyamide‐6 γ ‐phase |
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