TY - JOUR
T1 - Adsorption behavior and wettability by Gemini surfactants with ester bond at polymer-solution-air systems
AU - Chang, Honghong
AU - Cui, Yong
AU - Wei, Wenlong
AU - Li, Xing
AU - Gao, Wenchao
AU - Zhao, Xiaoxia
AU - Yin, Shu
N1 - Funding Information:
The work was supported by National Natural Science Foundation of China (grant no. 21076135, 21206103), Key Project of Science and Technology of Shanxi (no. 20140321018-05), Natural Science Foundation of Shanxi Province (no. 2015011023), Key Project of Science and Technology of Jincheng (no. 201501004-15), Key Laboratory of Road Structure & Material of Transport (Beijing, Opening Funding, no. KF201403), and Foundation of Shanxi Province Key Laboratory of Surfactant (no. 201503).
Publisher Copyright:
© 2017 Elsevier B.V.
PY - 2017/3/1
Y1 - 2017/3/1
N2 - The wettability of Gemini surfactants with ester bond at Polytetrafluoroethylene (PTFE) and Paraffin surfaces have been investigated and the different physicochemical parameters such as surface tension (γLV), contact angle (θ), spreading coefficient (S), adhesional tension (γLVcosθ) and work of adhesion (WA) have been estimated. The obtained results indicate that the surface tension and contact angle decrease with the increase of surfactant concentration, and they tend to be stable when the concentration is more than CMC. The wettability of m-6-m on PTFE and Paraffin surfaces is better than that of m-2-m. A linear relationship exists between the adhesional and surface tension during a range of certain concentrations, the absorption amount of the surfactant at the liquid-air interface is larger than that at the PTFE-liquid interface. Meanwhile, this linear relationship is only applicable for 12-2-12 and 14-2-14 in the case of Paraffin. The adhesional tension increases with the increase of concentration, and it keeps constant when the saturated adsorption film has been formed at both liquid-air and solid-liquid interfaces. The better wettability of Gemini surfactants with ester bond on PTFE and Paraffin has the better adhesion.
AB - The wettability of Gemini surfactants with ester bond at Polytetrafluoroethylene (PTFE) and Paraffin surfaces have been investigated and the different physicochemical parameters such as surface tension (γLV), contact angle (θ), spreading coefficient (S), adhesional tension (γLVcosθ) and work of adhesion (WA) have been estimated. The obtained results indicate that the surface tension and contact angle decrease with the increase of surfactant concentration, and they tend to be stable when the concentration is more than CMC. The wettability of m-6-m on PTFE and Paraffin surfaces is better than that of m-2-m. A linear relationship exists between the adhesional and surface tension during a range of certain concentrations, the absorption amount of the surfactant at the liquid-air interface is larger than that at the PTFE-liquid interface. Meanwhile, this linear relationship is only applicable for 12-2-12 and 14-2-14 in the case of Paraffin. The adhesional tension increases with the increase of concentration, and it keeps constant when the saturated adsorption film has been formed at both liquid-air and solid-liquid interfaces. The better wettability of Gemini surfactants with ester bond on PTFE and Paraffin has the better adhesion.
KW - Adsorption
KW - Gemini surfactants
KW - Paraffin
KW - PTFE
KW - Wettability
UR - http://www.scopus.com/inward/record.url?scp=85010366310&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85010366310&partnerID=8YFLogxK
U2 - 10.1016/j.molliq.2017.01.056
DO - 10.1016/j.molliq.2017.01.056
M3 - Review article
AN - SCOPUS:85010366310
SN - 0167-7322
VL - 230
SP - 429
EP - 436
JO - Journal of Molecular Liquids
JF - Journal of Molecular Liquids
ER -