摘要
用多相聚合方法合成了聚(2,6-二溴-3-甲基苯醚)。并利用元素分析、IR(红外)和NMR(核磁共振)对其结构进行了鉴定。用红外光谱法测得聚合物分子量倒数1/M_n与末端羟基的吸收强度E成正比关系: 1/M_n=1.15×10^(-4)+1.53×10^(-3)E。
Poly(2,6dibromo-3-methylphenylene oxide)was synthesized by multiphase polymerization.Its structure was confirmed by elementary analysis,IR(Infrared)and NMR(Nuclear Magnetic Resonance).From the measurment at 3518 cm^(-1) in carbon tetrachloride,the reciprocal of molecular weight M_n determined by IR instead of VPO(Vapour Pressure Osmometry) is proportonal to absorbance E of terminal hydroxy in the polymer.The relation is:1/M_n=1.15×10^(-4)+1.53×10^(-3)E.
关键词
红外光谱法
高分子型
阻燃剂
Linear polymer
Fire retardarit
Molecular weight
Infrared spectrophotometry /Poly (2,6-dibromo-3- methylphenylene oxide)
