Quantitative study on the homogeneity of networks synthesized by nitroxide-mediated radical copolymerization of styrene and divinylbenzene

[Display omitted] •A Monte Carlo simulation of NMRP of styrene and divinylbenzene.•The homogeneity of the polymer network was studied quantitatively.•The NMRP led to a narrower Mc distribution compared to FRP.•Average Mc evolution in NMRP is totally different from the FRP after gelation. The nitroxi...

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Bibliographic Details
Published in:European polymer journal 2016-12, Vol.85, p.244-255
Main Authors: Hamzehlou, Shaghayegh, Reyes, Yuri, Leiza, Jose R.
Format: Article
Language:English
Subjects:
Chemical synthesis
Computer simulation
Controlled radical polymerization
Copolymerization
Crosslinking
Divinylbenzene
Free radical polymerization
Homogeneity
Mass distribution
Mathematical models
Microstructure
Monte Carlo simulation
Network homogeneity
Networks
Polymerization
Polymers
Radicals
Styrene
Styrenes
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Summary:[Display omitted] •A Monte Carlo simulation of NMRP of styrene and divinylbenzene.•The homogeneity of the polymer network was studied quantitatively.•The NMRP led to a narrower Mc distribution compared to FRP.•Average Mc evolution in NMRP is totally different from the FRP after gelation. The nitroxide-mediated radical copolymerization (NMRP) of styrene and divinylbenzene was studied using a Monte Carlo simulation. The model predictions were validated by comparing to experimental results gathered from literature. Polymer network microstructure was studied through complete molar mass distribution (including the gel part) of the polymer and by quantitative representation of the homogeneity of the network, i.e. the broadness of the distribution of the molar mass between crosslinking points (Mc). The nitroxide mediated radical polymerization led to a narrower Mc distribution compared to free radical polymerization, and the average Mc did not change significantly through the reaction. The narrower Mc distribution is an indicator of more homogenous network and clarifies many conflicting statements in the literature on homogeneity of the network obtained by controlled radical polymerization.
ISSN:0014-3057
1873-1945
DOI:10.1016/j.eurpolymj.2016.10.015