Stimuli-Responsive Composite Particles as Solid-Stabilizers for Effective Oil Harvesting

被引：109

作者：

Chen, Yu ^{[1
,2
]}

Bai, Yongkang ^{[1
,2
]}

Chen, Shoubing ^{[1
]}

Jup, Junping ^{[1
,2
]}

Li, Yuqi ^{[1
,2
]}

Wang, Tingmei ^{[1
]}

Wang, Qihua ^{[1
]}

机构：

[1] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100039, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2014年 / 6卷 / 16期

基金：

美国国家科学基金会; 中国国家自然科学基金;

关键词：

stimuli-responsive; oil harvesting; poly(N-isopropylacrylamide); Pickering emusion; drop transport; polymer brushes; OIL/WATER SEPARATION; WATER-INTERFACE; COATED MESH; EMULSIONS; POLY(N-ISOPROPYLACRYLAMIDE); TEMPERATURE; MICROGELS; PH; MEMBRANE;

D O I：

10.1021/am504124a

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The polymer-grafted magnetic composite particles have been synthesized and developed to harvest oil by use of their speical wettability. Different from gravity-driven oil water separation, the prepared polymer brushes-grafted magnetic composite particles can act as solid-stabilizers that diffuse to the oil water interfical region and effectively minimize the direct oil water interfical area by volume exclusion, whereas the magnetic Fe3O4 core allows easy separation of Pickering emulsions from oil water mixture under an external magnetic field. When the emulsions were heated from room temperature to 50 degrees C, the coil-to-globule transition of poly(N-isopropylacrylamide) (PNIPAM) acts as the driving force for the destabilization of the emulsion, thereby achieving the release of oil. The novel materials can be used in aspects of oil water separation, inducing oil droplet transport and release of lipophilic substrates.

引用

页码：13334 / 13338

页数：5

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