Mechanism Studies of Complex Formation Between an Amphiprotic Anion(HBPN)and a Cationic Surfactant(CTAB)

Abstract

Abstract: The interactions between an amphiprotic anion HBPN (highly branched polyester nanoparticle) and a cationic surfactant CTAB (cetyltrimethylammonium bromide) in buffer and HBPN/CTAB complex formation were investigated by dynamic laser light scattering. The results indicated that the core/shell structure HBPN/CTAB complexes were formed by positively charged HBPN and oppositely charged CTAB micelles, which were made from CTAB molecules at first, due to the static electricity interaction in alkaline solution. The complex size can be controlled by solution pHvalue and CTAB concentration.

Key words: Nanoparticles, Surfactant/polyelectrolytes interaction, Dynamic light scattering, Complexing mechanism

CLC Number:

O631

TrendMD:

MA Rong-Jiu, WU Chi. Mechanism Studies of Complex Formation Between an Amphiprotic Anion(HBPN)and a Cationic Surfactant(CTAB)[J]. Chem. J. Chinese Universities, 1998, 19(2): 318.

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Mechanism Studies of Complex Formation Between an Amphiprotic Anion(HBPN)and a Cationic Surfactant(CTAB)

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