FLEXIBLE WOOD STRUCTURES AND DEVICES, AND METHODS FOR FABRICATING AND USE THEREOF

    公开(公告)号:US20200282591A1

    公开(公告)日:2020-09-10

    申请号:US16500745

    申请日:2018-04-02

    摘要: A flexible structure is formed by subjecting cellulose-based natural wood material to a chemical treatment that partially removes hemicellulose and lignin therefrom. The treated wood has a unique 3-D porous structure with numerous channels, excellent biodegradability and biocompatibility, and improved flexibility as compared to the natural wood. By further modifying the treated wood, the structure can be adapted to particular applications. For example, nanoparticles, nanowires, carbon nanotubes, or any other coating or material can be added to the treated wood to form a hybrid structure. In some embodiments, open lumina with-in the structure can be at least partially filled with a non-wood substance, such as a flexible polymer, or with entangled cellulose nanofibers. The unique architecture and superior properties of the flexible wood allow for its use in various applications, such as, but not limited to, structural materials, solar thermal devices, flexible electronics, tissue engineering, thermal management, and energy storage.

    Coloration of acetylated wood
    72.
    发明授权

    公开(公告)号:US10315332B2

    公开(公告)日:2019-06-11

    申请号:US15809970

    申请日:2017-11-10

    发明人: David J. Williams

    摘要: Techniques and products are described for coloring acetylated wood products. An acetylated wood product can be impregnated by a coloring medium within a chamber and the colorant or colorants contained within the coloring medium can be fixed to the acetylated wood product by the application of heat or by application of radio frequency radiation to color any external surface or interior region of the acetylated wood product which has been impregnated by the coloring medium.

    Treated porous material
    73.
    发明授权

    公开(公告)号:US10315330B2

    公开(公告)日:2019-06-11

    申请号:US15537253

    申请日:2015-06-30

    摘要: A treated cellulosic material comprising a cellulosic material having a porous structure defining a plurality of pores, at least a portion of the pores containing a treating agent comprising a polymer comprising a modified cellulose polymer; and a modifying agent comprising a hydrophobic amine, a metal ion, or a quat. The present disclosure further describes a method for preparing a treated cellulosic material comprising (a) providing a cellulosic material; (b) a first treatment protocol comprising impregnating the cellulosic material with a dispersion comprising a polymer, the polymer comprising a modified cellulose polymer; and (c) a second treatment protocol comprising impregnating the cellulosic material with a modifying agent, the modifying agent comprising a hydrophobic amine, a metal ion, or a quat.

    MICRONIZED WOOD PRESERVATIVE FORMULATIONS
    75.
    发明申请

    公开(公告)号:US20190021332A1

    公开(公告)日:2019-01-24

    申请号:US15900463

    申请日:2018-02-20

    摘要: The present invention provides wood preservative compositions comprising micronized particles. In one embodiment, the composition comprises dispersions of micronized metal or metal compounds. In another embodiment, the wood preservative composition comprises an inorganic component comprising a metal or metal compound and organic biocide. When the composition comprises an inorganic component and an organic biocide, the inorganic component or the organic biocide or both are present as micronized particles. When compositions of the present invention are used for preservation of wood, there is minimal leaching of the metal and biocide from the wood.