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Oikawa Y, Saito T, Yamada S, et al. Preparation and Surface Property of Fluoroalkyl End-Capped Vinyltrimethoxysilane Oligomer/Talc Composite-Encapsulated Organic Compounds: Application for the Separation of Oil and Water. ACS Appl Mater Interfaces. 2015;7(25):13782-93doi: 10.1021/acsami.5b01588.
Oikawa, Y., Saito, T., Yamada, S., Sugiya, M., & Sawada, H. (2015). Preparation and Surface Property of Fluoroalkyl End-Capped Vinyltrimethoxysilane Oligomer/Talc Composite-Encapsulated Organic Compounds: Application for the Separation of Oil and Water. ACS applied materials & interfaces, 7(25), 13782-93. https://doi.org/10.1021/acsami.5b01588
Oikawa, Yuri, et al. "Preparation and Surface Property of Fluoroalkyl End-Capped Vinyltrimethoxysilane Oligomer/Talc Composite-Encapsulated Organic Compounds: Application for the Separation of Oil and Water." ACS applied materials & interfaces vol. 7,25 (2015): 13782-93. doi: https://doi.org/10.1021/acsami.5b01588
Oikawa Y, Saito T, Yamada S, Sugiya M, Sawada H. Preparation and Surface Property of Fluoroalkyl End-Capped Vinyltrimethoxysilane Oligomer/Talc Composite-Encapsulated Organic Compounds: Application for the Separation of Oil and Water. ACS Appl Mater Interfaces. 2015 Jul 01;7(25):13782-93. doi: 10.1021/acsami.5b01588. Epub 2015 Jun 16. PMID: 26042807.
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ACS Appl Mater Interfaces. 2015 Jul 01;7(25):13782-93. doi: 10.1021/acsami.5b01588. Epub 2015 Jun 16.

Preparation and Surface Property of Fluoroalkyl End-Capped Vinyltrimethoxysilane Oligomer/Talc Composite-Encapsulated Organic Compounds: Application for the Separation of Oil and Water.

ACS applied materials & interfaces

Yuri Oikawa, Tomoya Saito, Satoshi Yamada, Masashi Sugiya, Hideo Sawada

Affiliations

  1. †Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, Hirosaki 036-8561, Japan.
  2. ‡Research and Development Division, , Nippon Chemical Industrial Co., Ltd., Koto-ku, Tokyo 136-8515, Japan.

PMID: 26042807 DOI: 10.1021/acsami.5b01588

Abstract

Fluoroalkyl end-capped vinyltrimethoxysilane oligomer [R(F)-(CH2-CHSi(OMe)3)n-R(F); n = 2, 3; R(F) = CF(CF3)OC3F7 (R(F)-VM oligomer)] can undergo the sol-gel reaction in the presence of talc particles under alkaline conditions at room temperature to provide the corresponding fluorinated oligomeric silica/talc nanocomposites (RF-VM-SiO2/Talc). A variety of guest molecules such as 2-hydroxy-4-methoxybenzophenone (HMB), bisphenol A (BPA), bisphenol AF, 3-(hydroxysilyl)-1-propanesulfonic acid (THSP), and perfluoro-2-methyl-3-oxahexanoic acid (R(F)-COOH) are effectively encapsulated into the R(F)-VM-SiO2/Talc composite cores to afford the corresponding fluorinated nanocomposites-encapsulated these guest molecules. The R(F)-VM-SiO2/Talc composites encapsulated low molecular weight aromatic compounds such as HMB and BPA can exhibit a superoleophilic-superhydrophobic characteristic on the surfaces; however, the R(F)-VM-SiO2/Talc composite-encapsulated THSP and R(F)-COOH exhibit a superoleophobic-superhydrophilic characteristic on the modified surfaces. In these nanocomposites, the R(F)-VM-SiO2/Talc/THSP composites are applicable to the surface modification of polyester fabric, and the modified polyester fabric possessing a superoleophobic-superhydrophilic characteristic on the surface can be used for the membrane for oil (dodecane)/water separation. In addition, the R(F)-VM-SiO2/Talc composites-encapsulated micrometer-size controlled cross-linked polystyrene particles can be also prepared under similar conditions, and the obtained composite white-colored particle powders are applied to the packing material for the column chromatography to separate water-in-oil (W/O) emulsion.

Keywords: cross-linked polystyrene particle; fluorinated oligomer; separation of oil/water; silica; superamphiphobic characteristic; superhydrophilic−superoleophobic characteristic; superhydrophobic−superoleophilic characteristic; talc composite

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