Quantitative Determination of the Spring Entropy Effect and Its Indication of the Conformational Change of Polymer Coils with Varying Concentration in Aqueous Poly(-isopropylamide) Solutions

Overview

Journal RSC Adv

Publisher Royal Society of Chemistry

Specialty Chemistry

Date 2022 May 6

PMID 35515908

Authors

Li Song

Jiaxiang Lin

Panpan Liu

Jingqing Li

Shichun Jiang

Dinghai Huang

Affiliations

Soon will be listed here.

Abstract

The lower critical solution temperature (LCST) phase separation behaviors of thermosensitive poly(-isopropylacrylamide) (PNIPAM) aqueous solutions were investigated by power-compensation differential scanning calorimetry (DSC). The entropic effect and hence the change of swelling state of PNIPAM polymer coils in homogeneous concentrated aqueous solutions with varied solution composition was elucidated by the isothermal enthalpy demixing recovery behaviors in distinct concentration regions.

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