Characterization Techniques for Chemical and Structural Analyses

Ortega, Euth Ortiz; Hosseinian, Hamed; López, María José; Vera, Andrea Rodríguez; Hosseini, Samira

doi:10.1007/978-981-16-9569-8_4

Cited by 1 publication

(2 citation statements)

References 153 publications

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“…The peak at 1715 cm −1 corresponded to the carbonyl (C=O) group stretching vibration band of ester bond, while the peaks at 1263 cm −1 and 1102 cm −1 were due to the C‐O vibration, which were the characteristic peaks of ester bond of P6T6T. The peak at 1630 cm −1 could be attributed to C=O stretching of amide bond of P6T6T, while the stretching vibration peak and the bending vibration peak of N‐H in the amide bond were found at 3320 cm −1 and 1540 cm −1 , respectively 27,28 . Compared to the spectra of 6T6, the peaks of P6T6T at 3320 cm −1 are obviously lower, which indicated that the content of amide bond decreased after the reaction of 6T6 and PTA.…”

Section: Resultsmentioning

confidence: 96%

“…The peak at 1630 cm À1 could be attributed to C=O stretching of amide bond of P6T6T, while the stretching vibration peak and the bending vibration peak of N-H in the amide bond were found at 3320 cm À1 and 1540 cm À1 , respectively. 27,28 Compared to the spectra of 6T6, the peaks of P6T6T at 3320 cm À1 are obviously lower, which indicated that the content of amide bond decreased after the reaction of 6T6 and PTA. Meanwhile, the peak at 3390 cm À1 disappeared in P6T6T spectrum, corresponding to the consumption of hydroxyl group of 6T6 after polycondensation.…”

Section: Ftir Spectramentioning

confidence: 94%

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Poly(ester amide) from 6‐amino‐1‐hexanol and terephthalic acid: preparation and properties

Xiao,

Cheng,

Liu

et al. 2024

Polymers for Advanced Techs

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Poly(ester amide)s (PEAs) have received extensive attention due to their unique chemical structure and excellent properties. In this paper, a novel PEA (P6T6T) was prepared through melt polycondensation of terephthalic acid (PTA) and 6T6‐diamide‐diol (6T6), which was from the amidation of 6‐amino‐1‐hexanol and PTA. The structures were characterized by nuclear magnetic resonance, fourier transform infrared, and wide‐angle X‐Ray diffraction, and the thermal properties were evaluated by differential scanning calorimetry and thermal gravimetric analysis for P6T6T. It was found that the melting point of P6T6T was 217°C, which was about 37°C lower than that of PET (254°C), while the initial decomposition temperature was maintained at about 381°C. P6T6T had a fast crystallization rate (the half time of crystallization (t1/2) range from 35 to 60 s) and great crystallization properties. The saturated water absorption of the P6T6T was measured to be 2.53 wt%, which was three times that of PET (0.83 wt%). Furthermore, the water contact angle of P6T6T was determined to be 57.3°C, much lower than that of PET (94.7°C). All these results suggest that the incorporation of amide was an efficient method to improve the water absorption of polyester fibers.

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Section: Resultsmentioning

confidence: 96%

Section: Ftir Spectramentioning

confidence: 94%