Journal of Dispersion Science and Technology · 2011 · 41 citations · 39 references
Natural SciencesChemistryMaterials SciencePolymer ChemistryPolymer EngineeringPolymer MaterialsPolymer AdditivesPolymer AnalysisPolymer CharacterizationPolymer PhysicsPolymer StructurePolymerization ChemistryAdditivesCloud PointCoiled-coil StructureControlled Radical PolymerizationPolymer Coil ConformationPolymer-surfactant InteractionsRandom Coil ConformationReversible Addition-fragmentation Chain Transfer Polymerization
The effect of different kinds of additives (electrolytes, nonelectrolytes, hydrotropes, and surfactants) on the cloud point (CP) of low molecular weight and narrow dispersed poly(n-isopropylacrylamide) (PNIPAM) synthesized via reversible addition-fragmentation chain transfer (RAFT) controlled radical polymerization was examined. The CP showed a concentration dependent variation and it is greatly modified in the presence of additives. The size of the random polymer coil at 30°C obtained from dynamic light scattering (DLS) measurements is often influenced by the presence of additives. We have explained the effects of different additives on PNIPAM in terms of their interaction with polymer and resultant changes in the coil structure.
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