差示扫描量热法
材料科学
热稳定性
热分解
聚酯纤维
聚合物
缩聚物
傅里叶变换红外光谱
产量(工程)
玻璃化转变
高分子化学
化学工程
有机化学
化学
复合材料
工程类
物理
热力学
作者
Diana Serbezeanu,Ana‐Maria Macsim,Ionela‐Daniela Carja,Corneliu Hamciuc,Marius Pîslaru,Tăchiță Vlad‐Bubulac
标识
DOI:10.1177/0954008320960532
摘要
Liquid crystalline hyperbranched poly(aryl ester)s (A 2 B 3 ) were prepared by polycondensation reaction of 2-(6-oxido-6H-dibenz<c,e><1,2>oxaphosphorin-6-yl)1,4-naphthalene diol with 1,3,5-benzenetricarbonyl trichloride, taken in two different molar ratios. The chemical structure of the newly synthesized hyperbranched polymers was confirmed by FTIR, 1 H NMR, 13 C NMR spectroscopy. The polymers exhibited high thermal stability with initial decomposition temperature above 410–435°C and char yield at 700°C higher than 40%. Combined differential scanning calorimetry, polarized optical microscopy and wide-angle X-ray diffraction measurements were carried out to closely examine their thermal behavior and phase transitions.
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