沥青质在聚合物刷固定化表面上的吸附和解吸行为。

Adsorption and desorption behavior of asphaltene on polymer-brush-immobilized surfaces.

作者信息

Higaki Yuji, Hatae Kaoru, Ishikawa Tatsuya, Takanohashi Toshimasa, Hayashi Jun-ichiro, Takahara Atsushi

机构信息

Graduate School of Engineering, ‡Institute for Materials Chemistry and Engineering, and ∥International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University , 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.

出版信息

ACS Appl Mater Interfaces. 2014 Nov 26;6(22):20385-9. doi: 10.1021/am505904b. Epub 2014 Nov 14.

DOI:10.1021/am505904b

PMID:25370500

Abstract

The adsorption behavior of a model compound for surface-active component of asphaltenes, N-(1-hexylheptyl)-N'-(12-carboxylicdodecyl) perylene-3,4,9,10-tetracarboxylic bisimide (C5Pe), and detachment behavior of asphaltene deposit films for high-density polymer brushes were investigated. Zwitterionic poly(3-(N-2-methacryloyloxyethyl-N,N-dimethyl)ammonatopropanesulfonate (PMAPS) brushes and hydrophobic poly(n-hexyl methacrylate) (PHMA) brushes exhibit less C5Pe adsorption than poly(methyl methacrylate) (PMMA). The asphaltene deposit films on the PHMA brush detached in a model oil (toluene/n-heptane=1/4 (v/v)), and the asphaltene films on the PMAPS brush detached in water. The antifouling character was explained by the interface free energy for the polymer-brush/asphaltenes (γSA) and polymer-brush/toluene (γSO).

摘要

研究了沥青质表面活性成分的模型化合物N-(1-己基庚基)-N'-(12-羧基十二烷基)苝-3,4,9,10-四羧酸双酰亚胺(C5Pe)的吸附行为以及高密度聚合物刷上沥青质沉积膜的脱离行为。两性离子聚(3-(N-2-甲基丙烯酰氧基乙基-N,N-二甲基)铵丙烷磺酸盐(PMAPS)刷和疏水聚(正己基丙烯酸甲酯)(PHMA)刷比聚甲基丙烯酸甲酯(PMMA)表现出更少的C5Pe吸附。PHMA刷上的沥青质沉积膜在模型油(甲苯/正庚烷=1/4(v/v))中脱离，而PMAPS刷上的沥青质膜在水中脱离。通过聚合物刷/沥青质(γSA)和聚合物刷/甲苯(γSO)的界面自由能解释了防污特性。