Aqueous Polymeric Hollow Particles as an Opacifier by Emulsion Polymerization Using Macro-RAFT Amphiphiles.

Autor: Pham BTT; Key Centre for Polymers and Colloids, School of Chemistry and University of Sydney Nano Institute , The University of Sydney , Camperdown , New South Wales 2006 , Australia., Nguyen D; Key Centre for Polymers and Colloids, School of Chemistry and University of Sydney Nano Institute , The University of Sydney , Camperdown , New South Wales 2006 , Australia., Huynh VT; Key Centre for Polymers and Colloids, School of Chemistry and University of Sydney Nano Institute , The University of Sydney , Camperdown , New South Wales 2006 , Australia., Pan EH; Key Centre for Polymers and Colloids, School of Chemistry and University of Sydney Nano Institute , The University of Sydney , Camperdown , New South Wales 2006 , Australia., Shirodkar-Robinson B; Key Centre for Polymers and Colloids, School of Chemistry and University of Sydney Nano Institute , The University of Sydney , Camperdown , New South Wales 2006 , Australia., Carey M; DuluxGroup Australia , Clayton , Victoria 3168 , Australia., Serelis AK; DuluxGroup Australia , Clayton , Victoria 3168 , Australia., Warr GG; Key Centre for Polymers and Colloids, School of Chemistry and University of Sydney Nano Institute , The University of Sydney , Camperdown , New South Wales 2006 , Australia., Davey T; DuluxGroup Australia , Clayton , Victoria 3168 , Australia., Such CH; DuluxGroup Australia , Clayton , Victoria 3168 , Australia., Hawkett BS; Key Centre for Polymers and Colloids, School of Chemistry and University of Sydney Nano Institute , The University of Sydney , Camperdown , New South Wales 2006 , Australia.
Jazyk: angličtina
Zdroj: Langmuir : the ACS journal of surfaces and colloids [Langmuir] 2018 Apr 10; Vol. 34 (14), pp. 4255-4263. Date of Electronic Publication: 2018 Mar 26.
DOI: 10.1021/acs.langmuir.7b03410
Abstrakt: A robust polymerization technique that enables the surfactant-free aqueous synthesis of a high solid content latex containing polymeric hollow particles is presented. Uniquely designed amphiphilic macro-reversible addition fragmentation chain transfer (RAFT) copolymers were used as sole stabilizers for monomer emulsification as well as for free-radical emulsion polymerization. The polymerization was found to be under RAFT control, generating various morphologies from spherical particles, wormlike structures to polymer vesicles. The final particles were dominantly polymeric vesicles which had a substantially uniform and continuous polymer layer around a single aqueous filled void. They produced hollow particles once dried and were successfully used as opacifiers to impart opacity into polymer paint films. This method is simple, can be performed in a controllable and reproducible manner, and may be performed using diverse procedures.
Databáze: MEDLINE
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