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Photo-responsive shape memory polymer composites enabled by doping with biomass-derived carbon nanomaterials

Nano Research 2022年第2期15卷 1383-1392页

作者： Nina Yan Zhiyu Zheng Yunliang Liu Xizhi Jiang Jiamin Wu Min Feng Lei Xu Qingbao Guan Haitao Li Institute of Agricultural Facilities and Equipment Jiangsu Academy of Agricultural SciencesKey Laboratory for Protected Agricultural Engineering in the Middle and Lower Reaches of Yangtze RiverMinistry of Agriculture and Rural AffairsNanjing 210014China Institute for Energy Research School of Chemistry and Chemical EngineeringJiangsu UniversityZhenjiang 212013China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials International Joint Laboratory for Advanced Fiber and Low-dimension MaterialsCollege of Materials Science and EngineeringDonghua UniversityShanghai 201620China

As photothermal conversion agents,carbon nanomaterials are widely applied in polymers for light-triggered shape memory behaviors on account of their excellent light ***,they are usually derived from non-renewable fossil resources,which go against the demand for sustainable ***-derived carbon nanomaterials are expected as alternatives if they are designed with good dispersibility as well as splendid photothermal *** to date,very few researches focused on this ***,we report a novel light-triggered shape memory composite by incorporating renewable biomass-derived carbon nanomaterials into acrylate polymers without deep purification and *** functionalized carbon nanomaterials not only have stable dispersion in polymers as fillers,but also can endow the polymers with excellent and stable thermal and photothermal responsive properties in biological friendly *** the introduction of biomass-derived carbon nanomaterials,the mechanical properties of the composites are also further enhanced with the formation of hydrogen bonding between the carbon nanomaterials and the ***,the doping of 1%carbon nanomaterials endows the polymer with sufficient hydrogen bonds that not only exhibit excellent thermal and photothermal responsive properties,but also with enough space for the motion of *** properties make such composite a promising and safe candidate for shape memory applications,which provide a new avenue in smart fabrics or intelligent soft robotics.

关键词： biomass carbon nanomaterials shape memory polymers thermal responsive photothermal responsive

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Thermo-controlled,self-released smart wood tailored by nanotechnology for fast clean-up of highly viscous liquids

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SmartMat 2023年第1期4卷 153-167页

作者： Yahui Cai Jianfei Wu Kaili Wang Youming Dong Jundie Hu Jiafu Qu Dan Tian Jianzhang Li Qiliang Fu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources College of Materials Science and EngineeringNanjing Forestry UniversityNanjingChina School of Materials Science and Engineering Suzhou University of Science and TechnologySuzhouChina Scion RororuaNew Zealand

Designing highly porous materials is of great importance for liquid separation,water purification,and disinfection,such as spill oil cleaning and recycling,seawater desalting,and oil/water ***,a remaining challenge is to produce porous materials with the characteristics of fast absorption,continuous directional transport,and self-release of viscous ***,a functional cellulosic composite is reported by the chemical treatment and functionalization of wood resulting in a smart wood that can thermally selfrelease and separate high viscosity *** smart wood has a high absorption speed of 1398 mL/(m_(2)·s)(ethylene glycol)and a maximum absorption capacity of 47.2 g/g(chloroform)due to its intrinsic vertical micro/nanoscale channel structure,low tortuosity,and high ***,the switchable wettability is achieved by the surface coating of poly(N-isopropylacrylamide)on the porous wood,which enables the collection and removal of oil from the oil/water *** high viscosity oil can be automatically released due to the passive oil release at room *** release capacity of the smart wood remains above 91%after 15 cyclic *** envision that this functional smart wood could be extended to a wide range of applications in smart hydrogels,microfluidics,artificial drug release,and environmental restoration.

关键词： fast clean-up nanomaterial self-release smart wood thermal responsive

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