摘要
本文考虑到氢原子的影响,用矩阵代数的方法重新推导了聚乙烯分子链的均方回转半径。在我们得到的公式中若忽略氢原子的质量时,就简化到Flory的公式。具体数值计算得到聚乙烯分子链均方回转半径对分子量的依赖关系是。<S^2>^(1/2)=0.44M^(1/2)比较θ-溶剂的实验数据:<S^2>_w^(1/2)=0.45±0.08M_w^(1/2)是符合得很好的。
Taking account of the effect of hydrogen atoms, the mean-square radius of gyration of polyethylene chain is anew deduced. The formula is identical with one of flory's if the masses of hydrogen atoms are ignored. Numeral calculatidn indicates that the dependence of the mean-square radius of gyration of polyethylene on molecular weight can be expressed as〈S^2〉^(1/2)=0.44M^(1/2)which is in agreement with the experimental data in θ-solvent<S^2>_w^(1/2)=0.45±0.08M_w^(1/2)
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
1992年第4期313-319,共7页
Acta Chimica Sinica
