Reversible Addition–Fragmentation Chain-Transfer Polymerization of Amphiphilic Polycarboxybetaines and Their Molecular Interactions
| Autor: | Nurxat Nuraje, Munziya Abutalip, Sarkyt E. Kudaibergenov, R.K. Rakhmetullayeva, Anam Mahmood, Yerbol Dauletov, Alexey Shakhvorostov |
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| Rok vydání: | 2019 |
| Předmět: |
chemistry.chemical_classification
Alkane Chain transfer 02 engineering and technology Surfaces and Interfaces 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Micelle 0104 chemical sciences Hydrophobic effect chemistry Polymerization Amphiphile Polymer chemistry Electrochemistry General Materials Science Reversible addition−fragmentation chain-transfer polymerization 0210 nano-technology Spectroscopy Alkyl |
| Zdroj: | Langmuir. |
| ISSN: | 1520-5827 0743-7463 |
| DOI: | 10.1021/acs.langmuir.9b01347 |
| Popis: | In this work, we report the first molecular weight-controlled amphiphilic polybetaine synthesis using various hydrocarbons via reversible addition?fragmentation chain-transfer (RAFT) polymerization. The experimental separation of the alkyl aminocrotonate tautomers, which has been the subject of debate, was completed for the first time. The enamine form of these tautomers was further used as a monomer for the RAFT polymerization of amphiphilic polycarboxybetaines. Self-assembly of the amphiphilic polycarboxybetaines showed micelle structures from spherical, rod-like to fractal in the aqueous media due to the competition between both electrostatic and hydrophobic forces. Hydrophobically dominant interactions among amphiphilic polycarboxybetaines and long-chain hydrocarbon alkane molecules were investigated to understand long-chain hydrocarbon alkane crystallization using alkane crystal deposition and viscosity experiments. Strong hydrophobic forces between poly(hexadecyl-grafted aminocrotonate?methacrylic acid) and long-chain hydrocarbon alkane molecules changed the surface properties of the long-chain hydrocarbon alkane nucleus and inhibited the growth of paraffin crystals. |
| Databáze: | OpenAIRE |
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