STUDY ON THE UNIVERSAL CALIBRATION PARAMETERS FOR GPC IN THE SYSTEM OF POLYSTYRENE AND DIFFERENT ELUANTS

WEN Cheng-cheng

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STUDY ON THE UNIVERSAL CALIBRATION PARAMETERS FOR GPC IN THE SYSTEM OF POLYSTYRENE AND DIFFERENT ELUANTS

Research Article | 更新时间：2021-03-19

- STUDY ON THE UNIVERSAL CALIBRATION PARAMETERS FOR GPC IN THE SYSTEM OF POLYSTYRENE AND DIFFERENT ELUANTS
- Acta Polymerica Sinica Issue 3, Pages: 167-171(1983)
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- Published：20 June 1983，
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WEN Cheng-cheng. STUDY ON THE UNIVERSAL CALIBRATION PARAMETERS FOR GPC IN THE SYSTEM OF POLYSTYRENE AND DIFFERENT ELUANTS. [J]. Acta Polymerica Sinica (3):167-171(1983)
DOI：

WEN Cheng-cheng. STUDY ON THE UNIVERSAL CALIBRATION PARAMETERS FOR GPC IN THE SYSTEM OF POLYSTYRENE AND DIFFERENT ELUANTS. [J]. Acta Polymerica Sinica (3):167-171(1983) DOI：

摘要

窄分布聚苯乙烯在NDG(硅烷化刚性硅胶)柱上

以苯、甲苯、THF和MEK作为淋洗剂时

流体力学体积?[η]和校正的流体力学体积?[η]/f(θ)能否作为普适校正参数

关键在淋洗剂的极性。若淋洗剂的极性为零或很小

则成立。由于淋洗剂极性分子受填料表面残存静电作用力的吸引

它的表面上形成一个受束缚的淋洗剂液层

减小了孔道的有效尺寸

使logM[η]-Ve线和logM[η]/f(θ)-Ve线向Ve减小方向移动。

Abstract

Narrow-distribution polystyrene was eluted on a NDG (silanized rigid SO2) column with benzene

toluene

THF and MEK as the eluants. For solvents (benzene and toluene) with low polarity

the hydrodynamic volume M[η] and the modified hydro-dynamic volume M[η]/f(∈) are valid as the universal parameter for GPC. But for polar solvents (THF and MEK)

they are attracted to the surface of packing by electrostatic force remained on it to form a restrictive layer. This causes the reduction of the dimension of the pores of the packing and displacement of polts of M[n]-Ve and olg M[n]/(e)-Ve to a lower Ve values.

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