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Thermoreversible UCST-type Phase Behavior of Comb-like Poly(N-phenyl maleimide-co-n-octadecyl vinyl ether) in Organic Media
- Source :
- Colloid and Polymer Science. 289(17-18):1917-1925
- Publication Year :
- 2011
- Publisher :
- Springer, 2011.
-
Abstract
- Comb-like copolymer of N-phenyl maleimide and n-octadecyl vinyl ether was synthesized by conventional free radical solution polymerization. The molecular weight and molecular weight distribution were measured by GPC. The chemical composition of copolymer was characterized by FT-IR, 1H NMR and 13C NMR, and the results indicated that the obtained copolymer contained much more content of N-phenyl maleimide rather than equal molar ratio of monomer unit. The comb-like copolymer can exhibit upper critical solution temperature thermoresponsive phase behavior reversibly in N,N-dimethylformamide and some proper alcohols such as 1-butanol, 1-hexanol, etc. The effect of polymer concentration and co-solvent on thermoresponsive behavior of polymer solution was investigated, and the cloud point of polymer solution can be tuned conveniently. The high resolution 1H NMR method was used to comprehend the reversible thermoresponsive behavior in molecular level, and the results revealed that as temperature decreased the pendent long alkyl side chain aggregated and phase separation occurred at cloud point temperature; however, the mobility of main polymer chain decreased at lower temperature.
- Subjects :
- chemistry.chemical_classification
Cloud point
Polymers and Plastics
Solution polymerization
Polymer
Vinyl ether
chemistry.chemical_compound
Colloid and Surface Chemistry
chemistry
Upper critical solution temperature
Polymer chemistry
Materials Chemistry
Copolymer
medicine
Molar mass distribution
Physical and Theoretical Chemistry
Maleimide
medicine.drug
Subjects
Details
- Language :
- English
- ISSN :
- 0303402X
- Volume :
- 289
- Issue :
- 17-18
- Database :
- OpenAIRE
- Journal :
- Colloid and Polymer Science
- Accession number :
- edsair.doi.dedup.....c8c173934a0ebbf30aa77d6dc633f4a8