Thermoresponsive Melamine Sponges with Switchable Wettability by Interface-Initiated Atom Transfer Radical Polymerization for Oil/Water Separation

Lei, Zhiwen1; Zhang, Guangzhao1; Deng, Yonghong2; Wang, Chaoyang1

2017-03-15

10.1021/acsami.6b14565

ACS Applied Materials & Interfaces   影响因子和分区

1944-8244

1944-8252

Here we have obtained a temperature responsive melamine sponge with a controllable wettability between superhydrophilicity and superhydrophobicity by grafting the octadecyltrichlorosilane and thermoresponsive poly(N-isopropylacrylamide) (PNIPAAm) onto the surface of melamine sponge skeletons. The whole process included the silanization in which step the rough surface with low surface energy and the NH2 were provided, and the atom transfer radical polymerization which ensured the successful grafting of PNIPAAm onto the skeleton's surface. The product exhibits a good reversible switch between superhydrophilicity and super hydrophobicity by changing the temperature below or above the lower critical solution temperature (LCST, about 32 degrees C) of PNIPAAm, and the modified sponge still retains a good responsiveness after undergoing two temperature switches for 20 cycles. Simultaneously, the functionalized sponges could be used to absorb the oil under water at 37 degrees C, and they released the absorbed oil in various ways under water at 20 degrees C, showing separation.

melamine sponge PNIPAAm thermoresponsive controlled wettability oil/water separation

SCI ; EI

英语

通讯

Natural Science Foundation of Guangdong Province[2016A030311031]

Science & Technology - Other Topics ; Materials Science

Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:000396801200059

AMER CHEMICAL SOC

20171203473289

Acrylic monomers ; Free radical reactions ; Grafting (chemical) ; Hydrogels ; Hydrophilicity ; Hydrophobicity ; Musculoskeletal system ; Polymerization ; Separation ; Wetting

Biomechanics, Bionics and Biomimetics:461.3 ; Chemical Reactions:802.2 ; Chemical Operations:802.3 ; Chemical Products Generally:804 ; Organic Compounds:804.1 ; Polymerization:815.2 ; Physical Properties of Gases, Liquids and Solids:931.2

Web of Science

1.South China Univ Technol, Res Inst Mat Sci, Guangzhou 510640, Peoples R China
2.South Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China

Lei, Zhiwen,Zhang, Guangzhao,Deng, Yonghong,et al. Thermoresponsive Melamine Sponges with Switchable Wettability by Interface-Initiated Atom Transfer Radical Polymerization for Oil/Water Separation[J]. ACS Applied Materials & Interfaces,2017,9(10):8967-8974.

Lei, Zhiwen,Zhang, Guangzhao,Deng, Yonghong,&Wang, Chaoyang.(2017).Thermoresponsive Melamine Sponges with Switchable Wettability by Interface-Initiated Atom Transfer Radical Polymerization for Oil/Water Separation.ACS Applied Materials & Interfaces,9(10),8967-8974.

Lei, Zhiwen,et al."Thermoresponsive Melamine Sponges with Switchable Wettability by Interface-Initiated Atom Transfer Radical Polymerization for Oil/Water Separation".ACS Applied Materials & Interfaces 9.10(2017):8967-8974.