Star‐shaped block copolymers. IV. Emulsifying activity in the water–oil emulsions | Zendy

Jérôme R. | Zendy; Teyssié Ph. | Zendy

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Star‐shaped block copolymers. IV. Emulsifying activity in the water–oil emulsions

Author(s) -

Jérôme R.,

Teyssié Ph.

Publication year - 1981

Publication title -

journal of applied polymer science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.575

H-Index - 166

eISSN - 1097-4628

pISSN - 0021-8995

DOI - 10.1002/app.1981.070260130

Subject(s) - copolymer , star (game theory) , emulsion , materials science , polymer chemistry , water in oil , block (permutation group theory) , chemical engineering , polymer science , chemistry , composite material , organic chemistry , physics , polymer , engineering , mathematics , geometry , astrophysics

Water–organic solvents emulsions based on toluene, n hexane, n ‐dodecane, and decaline are stabilized by new A(B) 2 star‐shaped block copolymers. B is a polyoxirane block and A a polydiene or polyvinyl one. The influence of the molecular parameters of the copolymers has been studied; low‐molecular‐weight (±5000) copolymers containing 50% of polyoxirane have the originality to generate both O/W and W/O stable emulsions. The importance of the molecular architecture of block copolymers on their stabilizing efficiency has been put in evidence. For instance, 7/3 water–toluene emulsions are more efficiently stabilized by star‐shaped block copolymers, whereas linear block copolymers give better results for 3/7 water–toluene emulsions.

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