摘要
采用体积排斥色谱法 /示差折光指数 /直角激光光散射 /示差粘度三检测联用技术表征了聚己内酯 ;探讨了聚己内酯的溶液行为 ;订定了在 2 5℃聚己内酯 /THF体系的MHS方程 ;计算并比较了无扰均方末端距 <r2 >0 和无扰旋转半径 <R2g>0 的关系。
Polycaprolactone was studied by SEC/RI/RALLS/DV in THF at 25 ℃. The solution behavior was discussed. The parameters K and α of MHS equation were determined. The relationship between unperturbed mean-square end-to-end distance <r 2> 0 and unperturbed mean-square radius of gyration <R 2 g> 0 was established. The universal calibration of PCL/THF system was justified and the Flory's characteristic ratio C ∞ was calculated.
出处
《功能高分子学报》
CAS
CSCD
2000年第2期187-190,共4页
Journal of Functional Polymers
关键词
聚己内酯
GPC/SEC技术
溶液性质
分子量
multi-detector SEC
polycaprolactone
MHS equation
unperturbed molecular size
Flory's characteristic ratio C
∞