Journal of Surface Science and Technology

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Aggregation and Phase Behaviour of PEO/PPO/PEO Block Copolymers and Their Mixtures in Water


Affiliations
1 Department of Chemistry, South Gujarat University, Surat 395007, India
     

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Aqueous solutions of several polyethylene oxide/polypropylene oxide/polypropylene oxide copolymers (PEO/PPO/PEO) and their mixtures were examined from cloud point (CP), static and dynamic light scattering measurements. Mixtures of PEO/PPO/PEO copolymers with different molecular characteristics in some cases showed CP higher than the CPs of the individual components. The aggregation and phase behaviour of these mixed nonionic polymeric surfactants are explained on the basis of mixed micelle formation, micellar growth and transitions.

Keywords

Block Copolymer, PEO/PPO/PEO, Cloud Point, Micelle.
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  • Aggregation and Phase Behaviour of PEO/PPO/PEO Block Copolymers and Their Mixtures in Water

Abstract Views: 262  |  PDF Views: 2

Authors

Nirmesh J. Jain
Department of Chemistry, South Gujarat University, Surat 395007, India
Kiran Contractor
Department of Chemistry, South Gujarat University, Surat 395007, India
Pratap Bahadur
Department of Chemistry, South Gujarat University, Surat 395007, India

Abstract


Aqueous solutions of several polyethylene oxide/polypropylene oxide/polypropylene oxide copolymers (PEO/PPO/PEO) and their mixtures were examined from cloud point (CP), static and dynamic light scattering measurements. Mixtures of PEO/PPO/PEO copolymers with different molecular characteristics in some cases showed CP higher than the CPs of the individual components. The aggregation and phase behaviour of these mixed nonionic polymeric surfactants are explained on the basis of mixed micelle formation, micellar growth and transitions.

Keywords


Block Copolymer, PEO/PPO/PEO, Cloud Point, Micelle.