Surfactant-free emulsion of epoxy resin/sodium alginate for achieving robust underwater superoleophobic coating via a combination of phase separation and biomineralization

Hongzhong Du; Xingjian Zhao; Xinran Wang; Chijia Wang; Zhanjian Liu; Huaiyuan Wang; Fatang Liu

doi:10.1016/j.jcis.2023.03.166

Surfactant-free emulsion of epoxy resin/sodium alginate for achieving robust underwater superoleophobic coating via a combination of phase separation and biomineralization

J Colloid Interface Sci. 2023 Jul 15:642:488-496. doi: 10.1016/j.jcis.2023.03.166. Epub 2023 Mar 29.

Authors

Hongzhong Du¹, Xingjian Zhao¹, Xinran Wang¹, Chijia Wang¹, Zhanjian Liu¹, Huaiyuan Wang², Fatang Liu³

Affiliations

¹ College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing 163318, PR China.
² College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing 163318, PR China; School of Chemical Engineering and Technology, and State Key Laboratory for Chemical Engineering, Tianjin University, Tianjin 300350, PR China.
³ College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing 163318, PR China; School of Chemical Engineering and Technology, and State Key Laboratory for Chemical Engineering, Tianjin University, Tianjin 300350, PR China. Electronic address: liufatang123@163.com.

PMID: 37023520
DOI: 10.1016/j.jcis.2023.03.166

Abstract

Underwater superoleophobic coatings exhibit promising prospects in the field of oil contamination resistance. However, their poor durability, stemming from the fragile structures and unstable hydrophilicity, greatly restricted their development. In this report, we proposed a novel strategy of combination water-induced phase separation and biomineralization to prepare the robust underwater superoleophobic epoxy resin-calcium alginate (EP-CA) coating by utilizing a surfactant-free emulsion of epoxy resin/sodium alginate (EP/SA). The EP-CA coating not only exhibited excellent adhesion to various substrates, but also had remarkable resistance to the physical/chemical attacks such as abrasion, acid, alkali and salt. It could also protect the substrate (e.g., PET substrate) from the damage of organic solution and the fouling of crude oil. This report provides a new perspective to fabricate robust superhydrophilic coating with a facile way.

Keywords: Biomineralization; Calcium alginate; Durable underwater superoleophobic coating; Epoxy resin; Phase separation.