GAO Xiaorong, CUI Yong, ZHAO Xiaoxia, et al. Wettability on coal tar asphalt surface of dual quaternary ammonium salt Gemini surfactants containing ester and hydroxyl groups[J]. CIESC Journal, 2017, (1): 230-237.
GAO Xiaorong, CUI Yong, ZHAO Xiaoxia, et al. Wettability on coal tar asphalt surface of dual quaternary ammonium salt Gemini surfactants containing ester and hydroxyl groups[J]. CIESC Journal, 2017, (1): 230-237.DOI: 10.11949/j.issn.0438-1157.20160790.
Gemini surfactants of dual quaternary ammonium salts with hydroxyl and ester functional groups were synthesized and used to investigate wettability on coal tar asphalt surface.The contact angle of hydroxyl Gemini surfactants on coal tar asphalt surface decreased first and increased later with increase of hydrophobic chain length
which C12-OH surfactant showed best wetting.The contact angle of m-n-m ester Gemini surfactants decreased with increase of hydrophobic chain length.At fixed hydrophobic chain length
m-6-m surfactant had better wetting than m-2-m surfactant.A linear relationship was observed between adhesive tension on coal tar asphalt surface and surface tension of C10-OH
C12-OH and 12-2-12 surfactants within a range of concentrations.Zeta potential on the coal tar asphalt surface increased initially and tended to stabilize gradually along with increase of surfactant concentration.