Article
  • Preparation of Modified Nano-SiO2 Oil Dispersion System and the Stability of Its O/W Emulsion
  • Zhou Z, Wang J
  • 개질된 나노 실리카의 오일 분산체 제조와 O/W 에멀젼 안정성
Abstract
Nano-SiO2 was organically modified with silane coupling agent-KH570 to prepare the modified Nano-SiO2 oil dispersion system. By increasing the dosage of KH570, the ζ-potential (absolute value) and the char yield values decreased gradually. When KH570 was 5%, the maximum contact angle with water reached 79.8°. Then, the modified Nano-SiO2 was composed with petroleum sulfonate (PS) and its ability of reducing the O/W interfacial tension was measured. The results showed that, O/W interfacial tension reduced to about 5.86×10-3 mN/m when the Nano-SiO2 and petroleum sulfonate composite was mixed with the mass fraction of 0.2:0.3%. The emulsion stability coefficient was 2.15 after 120 min which was the minimum. It indicated that this compounded system had the best emulsifying ability because Nano-SiO2 particles were dragged onto the O/W interface by the PS molecules to improve the intensity of O/W interface.

Keywords: Nano-SiO2; hydrophobic modification; ζ-potential; composite oil dispersion system; enhanced oil recovery

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  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2023 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 2016; 40(2): 201-208

    Published online Mar 25, 2016

  • 10.7317/pk.2016.40.2.201
  • Received on Sep 6, 2015
  • Accepted on Dec 21, 2015