Dsc stare

The FT-IR spectra of organic compounds and polymers were recorded using Nicolet spectrometer. 1H NMR (400 MHz) and 13C NMR (100 MHz) spectra were obtained with a Bruker Advance spectrometer at 25°C using CDCl3 and DMSO- d6 as solvent. Polyamides inherent viscosities were obtained with a polyamide concentration of 0.5 g/dL in DMF solvent at 30°C using an Ubbelhode suspended level viscometer. Differential scanning calorimetry (DSC) was measured on a Mettler Toledo DSC STARe instrument at heating rate of 200°C/min under nitrogen. The glass transition temperatures (Tg) were determined from DSC curves. Thermogravimetric analysis (TGA) was performed on a Mettler Toledo STARe instrument at a heating rate of 10°C/min under nitrogen. Wide angle X-ray diffraction (WAXD) was measured with a Rigaku X-ray diffractometer using polyamide powder.

The FT-IR spectra of organic compounds and polymers were recorded using Nicolet spectrometer. ¹ H NMR (400 MHz) and ¹³ C NMR (100 MHz) spectra were obtained with a Bruker Advance spectrometer at 25°C using CDCl₃ and DMSO- d₆ as solvent. Polyamides inherent viscosities were obtained with a polyamide concentration of 0.5 g/dL in DMF solvent at 30°C using an Ubbelhode suspended level viscometer. Differential scanning calorimetry (DSC) was measured on a Mettler Toledo DSC STAR ^e instrument at heating rate of 20°C/min. under nitrogen. The glass transition temperatures (T_g) were determined from DSC curves. Thermogravimetric analysis (TGA) was performed on a Mettler Toledo STAR ^e instrument at a heating rate of 10°C/min under nitrogen. Wide angle X-ray diffraction (WAXD) was measured with a Rigaku X-ray diffractometer using polyamide powder.