TITLE:
Preparation of Fluoroalkyl End-Capped Oligomer/Cyclodextrin Polymer Composites: Development of Fluorinated Composite Material Having a Higher Adsorption Ability toward Organic Molecules
AUTHORS:
Jun-Ichi Suzuki, Yutaro Takegahara, Yuri Oikawa, Yuta Aomi, Hideo Sawada
KEYWORDS:
Fluorinated Oligomeric Composite, Cyclodextrin Polymer, Surface Modification, Superoleophilic, Superhydrophobic Property, Separation of Oil and Water, Organic Molecule, VOC, Adsorption Ability
JOURNAL NAME:
Journal of Encapsulation and Adsorption Sciences,
Vol.8 No.2,
June
29,
2018
ABSTRACT: Fluoroalkyl end-capped
vinyltrimethoxysilane oligomer
[RF-(CH2CHSi(OMe)3)n-RF; RF = CF(CF3)OCF7, n = 2, 3; RF-(VM)n-RF] was applied to the preparation of
fluoroalkyl end-capped vinyltrimethoxysilane oligomer/α-, β-, γ-cyclodextrin polymers (α-, β-, γ-CDPs) composites [RF-(VM-SiO2)n-RF/α-, β-, γ-CDPs] by the sol-gel reaction of the corresponding oligomer in the
presence of the α-, β-, γ-CDPs under alkaline conditions. The RF-(VM-SiO2)n-RF/α-, β-, γ-CDPs composites thus obtained were found to give a good dispersibility
toward the traditional organic media except for water, and were applied to the
surface modification of glass to provide a sueperoleophilic/superhydrophobic
characteristic on the modified surface, although the corresponding RF-(VM-SiO2)n-RF nanocomposites can give a usual oleophobic/superhydrophobic property on the surface.
These composites powders were also found to be applicable to the packing
material for the column chromatography to separate the mixture of oil/water and
the water in oil (W/O) emulsions. More interestingly, these composite powders
were found to have a higher adsorption ability toward not only low-molecular
weight aromatic compounds such as bisphenol A and bisphenol AF but also
volatile organic compounds, compared to that of the pristine α-, β-, γ-CDPs.