Browsing by Author "Liao, Chuanan"

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    Dual enzymatic formation of hybrid hydrogels with supramolecular-polymeric networks.
    (Chemical communications (Cambridge, England), 2014-11) Mao, Yanjie; Su, Teng; Wu, Qing; Liao, Chuanan; Wang, Qigang
    This communication describes a mild construction of hybrid hydrogels with supramolecular-polymeric networks via a dual enzymatic reaction.
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    Magnetic nanocomposite hydrogel prepared by ZnO-initiated photopolymerization for La (III) adsorption.
    (ACS applied materials & interfaces, 2014-11) Zheng, Xiangning; Wu, Dongbei; Su, Teng; Bao, Song; Liao, Chuanan; Wang, Qigang
    Here, we provide an effective method to fabricate magnetic ZnO clay nanocomposite hydrogel via the photopolymerization. The inorganic components endow the hydrogel with high mechanical strength, while the organic copolymers exhibit good adsorption capacity and separation selectivity to La (III) ions. An optimized hydrogel has the maximum compressive stress of 316.60±15.83 kPa, which still exhibits 138.98±7.32 kPa compressive strength after swelling. The maximum adsorption capacity of La ion is 58.8 mg/g. The adsorption matches the pseudo-second-order kinetics model. La (III) ions can be effectively separated from the mixtures of La/Ni, La/Co, La/Cu, and La/Nd in a broad pH range (2.0 to 8.0). After six adsorption-desorption cycles, the hydrogel can maintain its adsorption capacity. This work not only provides a new approach to the synthesis of tough hydrogels under irradiation, but also opens up enormous opportunities to make full use of magnetic nanocomposite hydrogels in environmental fields.
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    Nanocomposite gels via in situ photoinitiation and disassembly of TiOTiO₂-clay composites with polymers applied as UV protective films.
    (ACS applied materials & interfaces, 2014-02) Liao, Chuanan; Wu, Qing; Su, Teng; Zhang, Da; Wu, Qingsheng; Wang, Qigang
    We report a facile solution polymerized approach to prepare nanocomposite hydrogels. The electrostatic assembly of positive TiO2 nanoparticles with negative clay nanosheets obtained TiO2-clay composite particles, which was disassembled by the solution polymerization of N,N-dimethylacrylamide and homogeneously interacted with poly(N,N-dimethylacrylamide) chain to form nanocomposite hydrogels. The final nanocomposite hydrogels are mechanical tough and transparent, which has the maximum 598.21 KPa compressive strength. The immobilized TiO2 not only acted as the photo-initiator for radical polymerization but also endowed the nanocomposite gel films good UV protective performance. This strategy can be very useful for preparing nanocomposite hydrogels with different functions.