The Library
A mechanistic investigation of Pickering emulsion polymerization
Tools
Lotierzo, Andrea and Bon, Stefan A. F. (2017) A mechanistic investigation of Pickering emulsion polymerization. Polymer Chemisty, 8 (34). pp. 5100-5111. doi:10.1039/c7py00308k ISSN 1759-9962.
|
PDF
WRAP-mechanistic-investigation-Pickering-emulsion-polymerization-Bon-2017.pdf - Accepted Version - Requires a PDF viewer. Download (1698Kb) | Preview |
Official URL: http://doi.org/10.1039/c7py00308k
Abstract
Pickering emulsion polymerization offers a versatile way of synthetising hybrid core–shell latexes where a polymer core is surrounded by an armour of inorganic nanoparticles. A mechanistic understanding of the polymerization process is limited which restricts the use of the technique in the fabrication of more complex, multilayered colloids. In this paper clarity is provided through an in-depth investigation into the Pickering emulsion polymerization of methyl methacrylate (MMA) in the presence of nano-sized colloidal silica (Ludox TM-40). Mechanistic insights are discussed by studying both the adsorption of the stabiliser to the surface of the latex particles and polymerization kinetics. The adhesion of the Pickering nanoparticles was found not to be spontaneous, as confirmed by cryo-TEM analysis of MMA droplets in water and monomer-swollen PMMA latexes. This supports the theory that the inorganic particles are driven towards the interface as a result of a heterocoagulation event in the water phase with a growing oligoradical. The emulsion polymerizations were monitored by reaction calorimetry in order to establish accurate values for monomer conversion and the overall rate of polymerizations (Rp). Rp increased for higher initial silica concentrations and the polymerizations were found to follow pseudo-bulk kinetics.
Item Type: | Journal Article | ||||||||
---|---|---|---|---|---|---|---|---|---|
Subjects: | Q Science > QD Chemistry | ||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry | ||||||||
SWORD Depositor: | Library Publications Router | ||||||||
Library of Congress Subject Headings (LCSH): | Emulsion polymerization, Chemistry, Inorganic | ||||||||
Journal or Publication Title: | Polymer Chemisty | ||||||||
Publisher: | Royal Society of Chemistry (RSC) | ||||||||
ISSN: | 1759-9962 | ||||||||
Official Date: | 2017 | ||||||||
Dates: |
|
||||||||
Volume: | 8 | ||||||||
Number: | 34 | ||||||||
Page Range: | pp. 5100-5111 | ||||||||
DOI: | 10.1039/c7py00308k | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Reuse Statement (publisher, data, author rights): | ** From Crossref via Jisc Publications Router. | ||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||
Date of first compliant deposit: | 26 October 2017 | ||||||||
Date of first compliant Open Access: | 28 March 2018 | ||||||||
Funder: | DuluxGroup | ||||||||
Related URLs: |
Request changes or add full text files to a record
Repository staff actions (login required)
View Item |
Downloads
Downloads per month over past year