Polymer bulletin, ( ISI ), Volume (80), No (3), Year (2023-3) , Pages (3227-3246)

Title : ( Evaluation of the compressible regular solution model predictions via rheologically determined phase diagram for polyvinylchloride/polycaprolactone blend )

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Abstract

This paper focuses on the theoretical and experimental phase behavior determination of polyvinylchloride/polycaprolactone (PVC/PCL) blend. For this aim, the capability of the compressible regular solution (CRS) model to predict the phase behavior of the PVC/PCL blend was evaluated. The extreme sensitivity of the CRS model to the solubility parameters of the blend components and the lack of a unique value for the solubility parameters of each polymer, led to various phase behavior predictions from UCST to complete immiscibility. To verify the CRS model predictions, dilute solution viscometry (DSV), Fourier transform infrared (FTIR) and differential scanning calorimetry (DSC) were employed. The last two showed complete miscibility while different DSV criteria indicated partial miscibility, which were in contrast to the predictions made by the CRS model. Finally, the dynamic phase diagram of the PVC/PCL blend was determined via rheological measurements for the first time, suggesting LCST behavior with the critical point located at 195˚C.

Keywords

Compressible regular solution (CRS) model · Rheological measurements · PVC/PCL blend · Lower critical solution temperature (LCST)
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@article{paperid:1089520,
author = {},
title = {Evaluation of the compressible regular solution model predictions via rheologically determined phase diagram for polyvinylchloride/polycaprolactone blend},
journal = {Polymer bulletin},
year = {2023},
volume = {80},
number = {3},
month = {March},
issn = {0170-0839},
pages = {3227--3246},
numpages = {19},
keywords = {Compressible regular solution (CRS) model · Rheological measurements · PVC/PCL blend · Lower critical solution temperature (LCST)},
}

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%0 Journal Article
%T Evaluation of the compressible regular solution model predictions via rheologically determined phase diagram for polyvinylchloride/polycaprolactone blend
%A
%J Polymer bulletin
%@ 0170-0839
%D 2023

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