用中纯对苯二甲酸合成纤维级PET的理论分析和工业实践

计算表明对苯二甲酸原料中单官能团的允许最大值NS/NA=1/ 10 0 ;单官能团杂质只能生成端基 ,有这些端基结构的分子链对分子量分布的作用可忽略 ,不会对PET性能产生明显的影响。推得分子量分布表达式Nn=( 1-P) 2 ·Pn - 1 ,Mn=n( 1-P) 2 ·Pn - 1 。工业化实践证明了上述分析

The theorytical analysis and commercial production using middle purity terephthalic to synthsise PET for fibre

It's shown by the caculation that the max.rate of N s(single radical molecules)to N A(terephalic acid molecules)is 0.01,if PET for fibre.Single radical molecules reaction only becomes ends of micro-molecules,which may be negleted in discussion of molecule weight distribution and don't change product characteristic apparently.Molecule weight distribution formulas are N n=(1-P) 2·P n-1 ,M n=n(1-P) 2P n-1 .The theorytical analysis is true by commercial production.