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Title: Phase Behavior of Pyrene and Vinyl Polymers with Aromatic Side Groups

Abstract

The phase behavior and thermodynamic properties of mixtures of pyrene and model vinyl polymers with and without aromatic side groups are investigated using differential scanning calorimetry (DSC) measurements. The melting temperature and associated heat of melting of the pyrene crystals in the mixtures are utilized to extract the effective interaction parameters χ and the composition of polymer-rich phases, respectively. The χ of pyrene mixed with polymers with aromatic side groups investigated in this study, polystyrene, poly(2-vinylpyridine), and poly(3-vinylanisole), is less than 0.5 at the melting point of the pyrene crystals, suggesting that pyrene and the polymers with aromatic sides groups are enthalpically compatible, likely due to aromatic π–π interactions. In contrast, the χ of pyrene mixed with poly(1,4-isoprene) or poly(ethylene-alt-propylene) is larger than 0.5. The DSC measurements also enable characterization of the composition of polymer-rich phases. Interestingly, the polymers with aromatic side groups are found to have more pronounced miscibility with pyrene at symmetric compositions.

Authors:
 [1]; ORCiD logo [1]
  1. Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org.:
INDUSTRY
OSTI Identifier:
1410125
Resource Type:
Journal Article
Resource Relation:
Journal Name: Macromolecules; Journal Volume: 50; Journal Issue: 21
Country of Publication:
United States
Language:
ENGLISH
Subject:
36 MATERIALS SCIENCE

Citation Formats

Kangovi, Gagan N., and Lee, Sangwoo. Phase Behavior of Pyrene and Vinyl Polymers with Aromatic Side Groups. United States: N. p., 2017. Web. doi:10.1021/acs.macromol.7b01893.
Kangovi, Gagan N., & Lee, Sangwoo. Phase Behavior of Pyrene and Vinyl Polymers with Aromatic Side Groups. United States. doi:10.1021/acs.macromol.7b01893.
Kangovi, Gagan N., and Lee, Sangwoo. Tue . "Phase Behavior of Pyrene and Vinyl Polymers with Aromatic Side Groups". United States. doi:10.1021/acs.macromol.7b01893.
@article{osti_1410125,
title = {Phase Behavior of Pyrene and Vinyl Polymers with Aromatic Side Groups},
author = {Kangovi, Gagan N. and Lee, Sangwoo},
abstractNote = {The phase behavior and thermodynamic properties of mixtures of pyrene and model vinyl polymers with and without aromatic side groups are investigated using differential scanning calorimetry (DSC) measurements. The melting temperature and associated heat of melting of the pyrene crystals in the mixtures are utilized to extract the effective interaction parameters χ and the composition of polymer-rich phases, respectively. The χ of pyrene mixed with polymers with aromatic side groups investigated in this study, polystyrene, poly(2-vinylpyridine), and poly(3-vinylanisole), is less than 0.5 at the melting point of the pyrene crystals, suggesting that pyrene and the polymers with aromatic sides groups are enthalpically compatible, likely due to aromatic π–π interactions. In contrast, the χ of pyrene mixed with poly(1,4-isoprene) or poly(ethylene-alt-propylene) is larger than 0.5. The DSC measurements also enable characterization of the composition of polymer-rich phases. Interestingly, the polymers with aromatic side groups are found to have more pronounced miscibility with pyrene at symmetric compositions.},
doi = {10.1021/acs.macromol.7b01893},
journal = {Macromolecules},
number = 21,
volume = 50,
place = {United States},
year = {Tue Oct 17 00:00:00 EDT 2017},
month = {Tue Oct 17 00:00:00 EDT 2017}
}