RAFT Macro-Surfmers and Their Use in the ab Initio RAFT Emulsion Polymerization To Decouple Nanoparticle Size and Polymer Molecular Weight
| Autor: | Davide Moscatelli, Simone Gatti, Azzurra Agostini, Umberto Capasso Palmiero, Lucia Brunel, Viola Valenti, Mattia Sponchioni |
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| Rok vydání: | 2016 |
| Předmět: |
Materials Chemistry2506 Metals and Alloys
chemistry.chemical_classification Polymers and Plastics Organic Chemistry Ab initio Emulsion polymerization Chain transfer 02 engineering and technology Polymer Raft 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Inorganic Chemistry chemistry.chemical_compound Monomer chemistry Chemical engineering Polymer chemistry Materials Chemistry Copolymer Reversible addition−fragmentation chain-transfer polymerization 0210 nano-technology |
| Zdroj: | Macromolecules. 49:8387-8396 |
| ISSN: | 1520-5835 0024-9297 |
| DOI: | 10.1021/acs.macromol.6b01827 |
| Popis: | Polymeric nanoparticles (NPs) are highly engineered nanoemulsions with applications in several fields. The control over NP surface chemistry, size (Dn), and molecular weight (MW) of the polymer they are made up of plays a paramount role in the optimization of their end-use performance. In this work, the theoretical basis to decouple the dependence between the NP Dn and MW has been presented, and an operative way has been demonstrated via ab initio reversible addition–fragmentation chain transfer (RAFT) emulsion polymerization (AIREP), a “living” heterogeneous process that adopts RAFT macro-surfmers: macromolecular chain transfer agents (CTA) produced via RAFT polymerization of amphiliphic monomers, such as surfmers. The possibility of obtaining the desired length of the lipophilic block or the length of the whole block copolymer and the NP Dn by choosing the correct length of the RAFT macro-surfmer has been assessed. It has been discovered that a wide range of Dn and MW can be achieved, but not very big N... |
| Databáze: | OpenAIRE |
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