摘要
除去 Kirkwood—Riseman 粘度理论公式中不合理引入的常数因子,将它改写为 Flory形式:■修正 Flory 引用热力学函数关系时的符号错误,得到:■修改中,假定 b_o 与溶剂性质和链长无关.我们求得聚苯乙烯的 b_o,在甲苯中为0.89～0.96(?),在丁酮中为0.79～0.83(?),可以认为与假定相符合.
Take off the constant factor introduced in Kirkwood-Riseman formulareasonlessly,and rewrite the formula in Flory form:K=Φb_0M_ e^(-3/2)〔z^(1/2)λ_0F(z^(1/2)λ_0)〕=(6π)^(3/2)N_(AV)/100=4.93×10^(23)Correct the symbol mistake made by Flory in the relation between thethermodynamic functions,we have:〔η〕^(2/3)M^(-1/3)=K^(2/3)+K^(5/3)C_TM〔η〕^(-1)C_T=-2C_(Mψ_1)(1-θ/T)=-2C_M(ψ-K_1)In the corrections,we let b_0 be a constant which is related to theproperties of the chain segment only.In our work,b_0 of Pst in φCH_3is 0.89～0.96,in bytylone 0,79～0,82.These values can be taken asconstants.
出处
《兰州大学学报（自然科学版）》
CAS
CSCD
北大核心
1989年第1期85-89,共5页
Journal of Lanzhou University(Natural Sciences)
