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Publication type: Article in scientific journal
Type of review: Peer review (publication)
Title: Surfactant-free synthesis of sub-100 nm poly(styrene-co-divinylbenzene) nanoparticles by one-step ultrasonic assisted emulsification/polymerization
Authors: Tzirakis, Manolis D.
Zambail, Roman
Tan, Yong Zen
Chew, Jia Wei
Adlhart, Christian
Honciuc, Andrei
DOI: 10.21256/zhaw-1550
Published in: RSC Advances
Volume(Issue): 2015
Issue: 125
Pages: 103218
Pages to: 103228
Issue Date: 25-Nov-2015
Publisher / Ed. Institution: Royal Society of Chemistry
Publisher / Ed. Institution: London
ISSN: 2046-2069
Language: English
Subject (DDC): 660: Chemical engineering
Abstract: The synthesis of sub-100 nm polymeric nanoparticles in a surfactant-free form is currently very challenging due to the oil nanoemulsion instability in polar solvents and in the absence of stabilizers. Here we report for the first time the surfactant-free synthesis method of poly(styrene-co-divinylbenzene) nanoparticles in an aqueous environment using ultrasonic radiation. This method involves emulsification of the monomers mixture in water, followed by free-radical polymerization under pulsed or continuous acoustic fields. The local energy produced in water by cavitation effects was sufficient to: (1) generate and stabilize the monomer nanoemulsion due to mechanical forces, and (2) drive the radical polymerization due to the heat generated. The average size of the final polymer nanoparticles obtained depended: (i) inversely on the monomer/water interfacial energy, emulsification power, and (ii) directly on temperature, amount of initiator and monomer solubility. The polymer nanoparticle size distribution and shape was considerably improved upon the addition of a co-polymerizable surfactant.
Fulltext version: Published version
License (according to publishing contract): CC BY-NC-ND 4.0: Attribution - Non commercial - No derivatives 4.0 International
Departement: Life Sciences and Facility Management
Organisational Unit: Institute of Chemistry and Biotechnology (ICBT)
Appears in Collections:Publikationen Life Sciences und Facility Management

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