Attenuated Total Reflection Fourier Transform Infrared Spectroscopy (ATR FT-IR) Mapping Coupled with Multivariate Curve Resolution (MCR) for Studying the Miscibility of Chlorobutyl Rubber/Polyamide-12 Blends

Abstract

A series of chlorobutyl rubber/polyamide-12 (CIIR/PA-12) blends compatibilized by different amounts of maleic anhydride (MAH) grafted polypropylene (PP-g-MAH) were investigated by attenuated total reflection Fourier transform infrared spectroscopy (ATR FT-IR) mapping. Multivariate curve resolution (MCR) was used to process the FT-IR images. Both the spectra of pure components in the blends and their concentration distributions in a micro-region were acquired. Our results demonstrated that the blend with 15 parts per hundred rubber PP-g-MAH showed the best miscibility. An amide interphase and an imide interphase were inferred by analyzing the spectra of MCR component 3 of the blends with and without PP-g-MAH, respectively. Correspondingly, two different compatibilizing mechanisms were proposed for these blends.

Developing a three-dimensional co-continuous phase network structure via enhanced inter-component affinity for high-performance flexible organic radical electrodes

“…Besides, ATR FT-IR mapping is a powerful technique for studying the distribution of radical polymers in the composites. 59 As shown in Fig. 3i, the ATR FT-IR spectra of PETM/SWNT and PTMA/SWNT demonstrate absorption bands at 1728 and 1722 cm À1 , respectively, assigned to the characteristics of C]O in ester groups.…”

“…48,52 The ATR FT-IR images of PETM/SWNT and PTMA/ SWNT were obtained by integrating the band of C]O in ester groups of PETM or PTMA in a range from 1758 to 1624 cm À1 (ref. 59) and the results are displayed in Fig. 3g and h, respectively.…”