Aqueous Polymeric Hollow Particles as an Opacifier by Emulsion Polymerization Using Macro-RAFT Amphiphiles
| Autor: | Binh T. T. Pham, Bhavna Shirodkar-Robinson, Eh Hau Pan, Brian S. Hawkett, Algirdas K. Serelis, Christopher Henry Such, Gregory G. Warr, Michelle Jocelyn Carey, Duc Ngoc Nguyen, Vien T. Huynh, Tim W. Davey |
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| Rok vydání: | 2018 |
| Předmět: |
chemistry.chemical_classification
Aqueous solution Materials science technology industry and agriculture Emulsion polymerization Chain transfer 02 engineering and technology Surfaces and Interfaces Polymer Raft 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences chemistry.chemical_compound Monomer chemistry Chemical engineering Polymerization Electrochemistry Copolymer General Materials Science 0210 nano-technology Spectroscopy |
| Zdroj: | Langmuir. 34:4255-4263 |
| ISSN: | 1520-5827 0743-7463 |
| Popis: | 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: | OpenAIRE |
| Externí odkaz: |
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