Asian Journal of Chemical Sciences

Intrinsic Viscosity-molecular Weight Relationship of Poly (Hexanediol Adipate)

Jiankun Li

Institute of Chemical Engineering, East China University of Science and Technology, 200237 Shanghai, China.

Zegang Zong

Institute of Chemical Engineering, East China University of Science and Technology, 200237 Shanghai, China.

Dehua Hou

Institute of Chemical Engineering, East China University of Science and Technology, 200237 Shanghai, China.

Bojun Tu

Institute of Chemical Engineering, East China University of Science and Technology, 200237 Shanghai, China.

Weilan Xue *

Institute of Chemical Engineering, East China University of Science and Technology, 200237 Shanghai, China.

Zuoxiang Zeng

Institute of Chemical Engineering, East China University of Science and Technology, 200237 Shanghai, China.

*Author to whom correspondence should be addressed.

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Abstract

In this work, a series of poly(Hexanediol adipate)(PHA) samples (10³＜M_n＜10⁴) with narrow molecular weight distribution were prepared by the polymerization between adilic acid and 1,6-hexandiol. End-group analysis was applied to determine the number average molecular weight (M_n) of PHA. Gel permeation chromatography (GPC) was employed to obtain the average molecular weights (M_n, M_v, M_w).The intrinsic viscosity of the samples in the tetrahydrofuran (THF) solution was determined at 298 K by the dilution extrapolation method and the one-point method. The relationship between the intrinsic viscosity and the molecular weight for PHA was studied by the Mark-Houwink-Sakurada (MHS) equation, and the parameters of equation were determined.

Keywords: One-point method, poly (hexanediol adipate), intrinsic viscosity, molecular weight, mark houwink-sakurada

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