Solubility behavior of amphiphilic sulfonated copolymers based on styrene-stearyl methacrylate and styrene-stearyl cinnamate

ABSTRACT Amphiphilic polymers have found many applications, so many types of these copolymers have been prepared. Specifically, sulfonated polystyrene acts, for example, as a flocullant or dispersant of petroleum asphaltenes as a function of its hydrophilic–hydrophobic balance. However, when changin...

Full description

Saved in:
Bibliographic Details
Published in:Journal of applied polymer science 2016-04, Vol.133 (15), p.np-n/a
Main Authors: Palermo, Luiz Carlos Magalhães, Souza Jr, Nelson Francisco, Silvino, Alexandre Carneiro, Nunes, Denise Gentili, Lucas, Elizabete Fernandes
Format: Article
Language:English
Subjects:
addition polymerization
Asphaltenes
Balancing
Copolymers
Fourier transforms
Infrared spectroscopy
Materials science
phase behavior
Polymers
properties and characterization
Solubility
Solubility parameters
Solvents
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:ABSTRACT Amphiphilic polymers have found many applications, so many types of these copolymers have been prepared. Specifically, sulfonated polystyrene acts, for example, as a flocullant or dispersant of petroleum asphaltenes as a function of its hydrophilic–hydrophobic balance. However, when changing the sulfonation degree, looking for the best performance, the solubility also changes, and sometimes it is responsible for making the polymer unsuitable for any application. Therefor, this work investigates in detail the changes in the solubility range of copolymers based on styrene–stearyl methacrylate and styrene–stearyl cinnamate with different molar compositions and different sulfonation degrees. The copolymers were synthesized and characterized by 1H‐NMR, Fourier transform infrared spectroscopy, and elemental analysis. In the range of compositions analyzed, with increasing content of long hydrocarbon chains, not only the displacement of the solubility in solvents with lower solubility parameter (δ), but also the broadening of the solubility range was observed. In general, the solubility was directly related to the sulfonic group content, but there appeared to be an influence of the randomness of the sulfonation reactions along the chains. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43112.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.43112