Entity

Time filter

Source Type


Zeng X.,Changshu Institute of Technology | Xu J.,Changshu Institute of Technology | Fu R.,Changshu Institute of Technology | Wang Q.,Changshu Institute of Technology | Wang L.,Yihai Fine Chemical Ltd Company
Journal of Dispersion Science and Technology | Year: 2016

A new family of tricephalic tetrasiloxane surfactants containing carbohydrate and hydrocarbon chain (SiC(n + 1)N-GA, in which n + 1 represents a hydrocarbon chain length of 1, 8, 12, 16), was synthesized using two-step method. Their structures were confirmed by Fourier transform infrared spectroscopy (FTIR) and proton nuclear magnetic resonance spectroscopy (1H NMR). Their surface activities and aggregation properties in aqueous solution were investigated by surface tension measurements, transmission electron microscopy, and dynamic light scattering. The results indicated that the critical micelle concentration (CMC) of these surfactants increased and the surface tension (γCMC) at the CMC decreased with an increase in the number of hydrocarbon chain, and they can self-assemble into spherical micelles with average diameters in the range from 5 to 200 nm, which are smaller than for single-headed surfactants. © 2016, Copyright © Taylor & Francis Group, LLC. Source


Zeng X.,Changshu Institute of Technology | Wang H.,Changshu Institute of Technology | Chen Y.,Changshu Institute of Technology | Wang L.,Yihai Fine Chemical Ltd Company
Journal of Surfactants and Detergents | Year: 2015

Three carbohydrate-modified polysiloxane bola surfactants (ATPS-GA) were synthesized using a two-step method. Their chemical structures were characterized by infrared spectroscopy (FT-IR) and proton nuclear magnetic resonance spectroscopy (1H NMR). Their surface properties and aggregation properties in aqueous solution were determined using surface tension measurements and transmission electron microscopy (TEM). Surface tension measurement results indicated that the three bola surfactants are under 25 mN m-1, and much lower than those of conventional hydrocarbon bola surfactants due to the siloxane moiety at the end of the hydrophobic chains. TEM analysis results indicated that the ATPS-GA can self-assemble into spherical micelles with a wide range of average diameters from 100 nm to above 600 nm. © 2015 AOCS. Source


Zeng X.,Changshu Institute of Technology | Wang H.,Changshu Institute of Technology | Chen Y.,Changshu Institute of Technology | Wang L.,Yihai Fine Chemical Ltd Company
Tenside, Surfactants, Detergents | Year: 2014

Three polysiloxane bola surfactants containing carbohydrate (ATPS-LA) were synthesized using a two-step method. Structure characterization was performed by infrared spectroscopy (FT-IR) and proton nuclear magnetic resonance spectroscopy (1H NMR). Their surface activities and aggregation properties in aqueous solution were investigated by surface tension measurements and transmission electron microscopy (TEM). The results indicated that these three surfactants have much higher surface activity than those of conventional hydrocarbon bola surfactants, such as sodium eicosanedioate, in aqueous solution, and they can self-Assemble into spherical micelles with average diameters in the range from 100 to 600 nm. © Carl Hanser Verlag GmbH & Co. KG. Source

Discover hidden collaborations