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Effect of the addition of salt to Pickering emulsion polymerizations using polymeric nanogels as stabilizers

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Lotierzo, Andrea, Meaney, Shane P. and Bon, Stefan Antonius Franciscus (2019) Effect of the addition of salt to Pickering emulsion polymerizations using polymeric nanogels as stabilizers. Polymer Chemistry, 10 (48). pp. 6600-6608. doi:10.1039/C9PY01240K ISSN 1759-9954.

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Official URL: http://dx.doi.org/10.1039/C9PY01240K

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Abstract

Nanogels made from crosslinked block copolymer micelles are used as stabilizers in the Pickering emulsion polymerization of styrene. The effect of the addition of salt, i.e. NaCl, on the emulsion polymerization is studied. It is shown that an increase in ionic strength of the dispersing medium in these polymerizations led to the formation of latexes of larger diameters. Along with an increase in size, the morphology of these polymer colloids changed from Janus to patchy with an increase in number of nanogels adsorbed on the polymer surface, as a function of the salt concentration in water. In particular, at the highest tested ionic strength, ca. 25 mM, fully armored polymeric particles surrounded by a dense layer of adsorbed stabilizing nanogels were formed. Kinetic studies carried out at varying NaCl concentrations suggested that particle formation in the reaction followed a combination of a coagulative nucleation mechanism, characterized by a clustering process of Janus precursors to form bigger aggregates, and droplet nucleation. Preliminary film formation studies on latexes made with n-butyl acrylate as a comonomer indicated the potential of this technique for the production of coherent polymer films which included a substructure of functional nanogels.

Item Type: Journal Article
Subjects: Q Science > QD Chemistry
Q Science > QP Physiology
T Technology > TP Chemical technology
Divisions: Faculty of Science, Engineering and Medicine > Science > Chemistry
Library of Congress Subject Headings (LCSH): Emulsion polymerization , Polymer colloids, Nanogels
Journal or Publication Title: Polymer Chemistry
Publisher: Royal Society of Chemistry
ISSN: 1759-9954
Official Date: 28 December 2019
Dates:
DateEvent
28 December 2019Published
11 November 2019Available
11 November 2019Accepted
Volume: 10
Number: 48
Page Range: pp. 6600-6608
DOI: 10.1039/C9PY01240K
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Date of first compliant deposit: 2 December 2019
Date of first compliant Open Access: 11 November 2020
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
UNSPECIFIEDDulux Australiahttp://viaf.org/viaf/135392032
Researcher Mobility GrantRoyal Society of Chemistryhttp://dx.doi.org/10.13039/501100000704

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