关键字：composites; FT-IR; glass transition; polyamides

摘要：Polyamide 6(PA6) and its composite with strontium ferrite (SrFeO) magnetic powders at different concentration levels (33%, 80%) are in situ investigated by temperature-dependent Fourier transform infrared spectroscopy (FT-IR). It is found that the intensity changes of the "free" (nonhydrogen bonded) N-H stretching vibration as a function of temperature can be used to determine the glass transition (T-g) and melting temperature (T-m); whereas the hydrogen-bonded N-H stretching vibration is only sensitive to T-m. Our results reveal that high SrFeO contents increase the T-g and T-m of PA6. These observations suggest that the molecular chains of PA6 are confined with increasing content of SrFeO.

卷号：51

期号：9

是否译文：否