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Chang YC, Chou CC, Lin JJ. Emulsion intercalation of smectite clays with comb-branched copolymers consisting of multiple quaternary amine salts and a poly(styrene-butadiene-styrene) backbone. Langmuir. 2005;21(15):7023-8doi: 10.1021/la050948c.
Chang, Y. C., Chou, C. C., & Lin, J. J. (2005). Emulsion intercalation of smectite clays with comb-branched copolymers consisting of multiple quaternary amine salts and a poly(styrene-butadiene-styrene) backbone. Langmuir : the ACS journal of surfaces and colloids, 21(15), 7023-8. https://doi.org/10.1021/la050948c
Chang, Yu-Chung, et al. "Emulsion intercalation of smectite clays with comb-branched copolymers consisting of multiple quaternary amine salts and a poly(styrene-butadiene-styrene) backbone." Langmuir : the ACS journal of surfaces and colloids vol. 21,15 (2005): 7023-8. doi: https://doi.org/10.1021/la050948c
Chang YC, Chou CC, Lin JJ. Emulsion intercalation of smectite clays with comb-branched copolymers consisting of multiple quaternary amine salts and a poly(styrene-butadiene-styrene) backbone. Langmuir. 2005 Jul 19;21(15):7023-8. doi: 10.1021/la050948c. PMID: 16008418.
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Langmuir. 2005 Jul 19;21(15):7023-8. doi: 10.1021/la050948c.

Emulsion intercalation of smectite clays with comb-branched copolymers consisting of multiple quaternary amine salts and a poly(styrene-butadiene-styrene) backbone.

Langmuir : the ACS journal of surfaces and colloids

Yu-Chung Chang, Chih-Cheng Chou, Jiang-Jen Lin

Affiliations

  1. Department of Chemical Engineering, National Chung Hsing University, Taichung 40227, Taiwan.

PMID: 16008418 DOI: 10.1021/la050948c

Abstract

Layered silicates were intercalated with comb-branched copolymers consisting of a hydrophobic polystyrene-b-poly(ethylene/butylene)-b-polystyrene (SEBS) backbone and multiple pendants of poly(oxyalkylene) (POA) quaternary ammonium salts. The requisite intercalating agents were synthesized by grafting POA amines on the maleated SEBS. The corresponding SEBS-POA amine salts were found to have two functions, the capability to emulsify toluene/water mixtures to fine particle sizes of 60-70 nm in diameter and to exchange ions with sodium montmorillonite. The resulting silicate hybrids were characterized by X-ray diffraction and transmission electron microscopy. Two types of intercalations with silicate d spacing of 18 and 50 A were obtained, in which the dissimilarity is attributed to disparate polymer incorporations, POA pendants only or the combination of both the SEBS backbone and POA in the gallery. Furthermore, the two conformations of polymer-intercalated silicates are reversibly transformable by varying emulsion conditions, micelle sizes, and solvents.

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