Synthesis and Properties of New Thermoplastic Polymers from Substituted 3,4-Dihydro-2H-1,3-benzoxazines
Macromolecules2000Vol. 33(8), pp. 2839–2847
Citations Over TimeTop 10% of 2000 papers
Abstract
With phosphorus pentachloride (PCl5) as a cationic initiator, new benzoxazine-based semicrystalline and amorphous thermoplastics with significant molecular weights have been synthesized for the first time. 1H and 13C nuclear magnetic resonance spectroscopy, Fourier transform infrared spectroscopy, and elemental analysis are used to characterize the resulting polymers. Both Mannich base phenoxy-type (Type I) and Mannich base phenolic-type (Type II) polybenzoxazines are obtained. The polymer properties have been studied by differential scanning calorimetry, thermogravimetric analysis, and wide-angle X-ray diffraction.
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