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Polymer Nanoparticles by Reversible Addition-Fragmentation Chain Transfer Microemulsion Polymerization
| Content Provider | Scilit |
|---|---|
| Copyright Year | 2010 |
| Description | Book Name: Advanced Polymer Nanoparticles |
| Abstract | Polymerization ............................................................................... 139 5.3 Reversible Addition-Fragmentation Chain Transfer Polymerization ........................................................................................... 140 5.4 Reversible Addition-Fragmentation Chain Transfer Microemulsion Polymerization ............................................................... 143 5.4.1 Microemulsion Polymerization Kinetics .................................... 144 5.4.1.1 Uncontrolled Microemulsion Polymerization Kinetics ............................................................................. 145 5.4.1.2 RAFT Microemulsion Polymerization Kinetics ......... 147 5.4.1.3 Model Results .................................................................. 150 5.4.1.4 Predicted RAFT Microemulsion Polymerization Kinetics with Negligible Biradical Termination ......... 150 5.4.1.5 Predicted RAFT Microemulsion Polymerization Kinetics with Biradical Termination ............................ 152 5.4.2 Molecular Weight and Polydispersity......................................... 153 5.4.2.1 Effect of Chain Transfer Agent per Micelle Ratio ...... 155 5.4.2.2 Effect of Monomer Solubility ........................................ 155 5.4.2.3 Effect of Chain Transfer Agent Solubility ................... 158 5.4.3 Latex Particle Size .......................................................................... 161 References ............................................................................................................. 163 Microemulsion poly mer i za tion produces small latex nanoparticles (D < 50 nm) of high molecular weight (MN = 106 to 107 g/mol) poly mer, and provides several advantages relative to other types of heterogeneous poly mer iza tions, such as rapid reaction times and a product that is colloidally stable. Since the introduction of microemulsion poly mer i za tion by Stoffer and Bone [1] and Atik and Thomas [2] in the early 1980s, this technique has been widely studied because of the dramatic benefits the high surface area-to-volume ratio of the poly mer particles provides for many applications including sensors [3], fluorescence markers [4], and conductive films [5]. Control of the microstructural properties (such as molecular weight, polydispersity, monomer sequences, chain ends, and degree of branching) in a microemulsion poly mer i za tion could lead to enhanced chemical and mechanical properties and an even broader range of applications. Of the many controlled free radical poly mer i za tion techniques that have been developed to control these microstructural properties, including nitroxide-mediated poly mer i zation (NMP) [6-9], atom transfer radical poly mer i za tion (ATRP) [10-13], and degenerative transfer (DT) [14,15], reversible addition-fragmentation chain transfer (RAFT) poly mer i za tion has emerged as the most promising due to its versatility and simplicity [16,17]. Also, in a RAFT poly mer i za tion the resulting poly mer is free from the contamination of metal catalysts. |
| Related Links | https://content.taylorfrancis.com/books/download?dac=C2009-0-13664-9&isbn=9780429148897&doi=10.1201/EBK1439814437-9&format=pdf |
| Ending Page | 180 |
| Page Count | 36 |
| Starting Page | 145 |
| DOI | 10.1201/ebk1439814437-9 |
| Language | English |
| Publisher | Informa UK Limited |
| Publisher Date | 2010-07-13 |
| Access Restriction | Open |
| Subject Keyword | Book Name: Advanced Polymer Nanoparticles Chain Monomer Microemulsion Polymerization Reversible Polydispersity |
| Content Type | Text |
| Resource Type | Chapter |
