POLYURETHANE COMPOSITES COMPRISING NANOCRYSTALLINE CELLULOSE AND METHOD FOR IMPROVING PROPERTIES OF POLYURETHANES THEREOF
    4.
    发明申请
    POLYURETHANE COMPOSITES COMPRISING NANOCRYSTALLINE CELLULOSE AND METHOD FOR IMPROVING PROPERTIES OF POLYURETHANES THEREOF 审中-公开
    包含纳米结晶纤维素的聚氨酯复合材料及其改性聚氨酯性能的方法

    公开(公告)号:WO2014190428A1

    公开(公告)日:2014-12-04

    申请号:PCT/CA2014/050473

    申请日:2014-05-22

    Abstract: The disclosure relates to polyurethane (PU) composites comprising nanocrystalline cellulose (NCC) and methods for improving tensile strength and elongation. The process to prepare the polyurethane comprises providing a dispersion of NCC in (a)one or more polyols, (b) one or more isocyanates, or (c) one or more polyols and one or more isocyanate, separately or mixed together, mixing with a catalyst and isolating the polyurethane. Preferred embodiments include an NCC content of less than 5%, dried NCC starting material, and the NCC being fully dispersed and not aggregated. The polyurethane may be used in elastomeric fibres, paints, solid polyurethane plastics, thermoplastic and cast elastomers and adhesives and/or binders.

    Abstract translation: 本公开涉及包含纳米晶体纤维素(NCC)的聚氨酯(PU)复合材料以及用于提高拉伸强度和伸长率的方法。 制备聚氨酯的方法包括在(a)一种或多种多元醇,(b)一种或多种异氰酸酯或(c)一种或多种多元醇和一种或多种异氰酸酯,单独或混合在一起,与 催化剂和分离聚氨酯。 优选实施方案包括NCC含量小于5%,干燥的NCC起始材料,并且NCC完全分散且不聚集。 聚氨酯可用于弹性体纤维,油漆,固体聚氨酯塑料,热塑性塑料和铸塑弹性体以及粘合剂和/或粘结剂。

    PROCESSES FOR PREPARING AMINE-FUNCTIONALIZED CELLULOSE NANOCRYSTALS AND NITROGEN DOPED CARBON NANOFIBERS
    6.
    发明申请
    PROCESSES FOR PREPARING AMINE-FUNCTIONALIZED CELLULOSE NANOCRYSTALS AND NITROGEN DOPED CARBON NANOFIBERS 审中-公开
    用于制备胺官能化纤维素纳米晶体和氮化碳纳米纤维的方法

    公开(公告)号:WO2017015761A1

    公开(公告)日:2017-02-02

    申请号:PCT/CA2016/050888

    申请日:2016-07-28

    Abstract: The present disclosure relates to a process for preparing coated cellulose nanocrystals (CNCs) and relates as well to coated cellulose nanocrystals (CNCs) obtainable by the process described herein. These new CNC hybrid nanomaterials are expected to be useful, for example, for the conjugation and electrostatic complexation with various functional moieties such as free metal ions, carboxylic acids, and epoxy and aldehyde derivatives. The disclosure further relates to a method to fabricate N-doped carbon nanomaterial from the coated CNCs.

    Abstract translation: 本公开涉及一种制备包被的纤维素纳米晶体(CNCs)的方法,并且还涉及通过本文所述的方法可获得的包被的纤维素纳米晶体(CNCs)。 预期这些新的CNC混合纳米材料可用于例如与各种功能部分如游离金属离子,羧酸和环氧和醛衍生物的共轭和静电络合。 本公开还涉及从涂覆的CNCs制备N掺杂碳纳米材料的方法。

    POLYDOPAMINE FUNCTIONALIZED CELLULOSE NANOCRYSTALS (PD-CNCS) AND USES THEREOF
    7.
    发明申请
    POLYDOPAMINE FUNCTIONALIZED CELLULOSE NANOCRYSTALS (PD-CNCS) AND USES THEREOF 审中-公开
    聚多巴胺官能化纤维素纳米晶体(PD-CNCS)及其用途

    公开(公告)号:WO2016011543A1

    公开(公告)日:2016-01-28

    申请号:PCT/CA2015/050669

    申请日:2015-07-17

    Abstract: The present disclosure relates to use of polydopamine (PD) coated cellulose nanocrystals (CNCs) as template for further conjugation of functional oligomers (amines, carboxylic acids etc.) and the immobilization of various types of CNC hybrid nanomaterial nanoparticles to improve their stability in aqueous solution, e.g. the preparation of silver nanoparticle on CNC. Surface functionalization of CNC with polydopamine can be performed by mixing dopamine and CNCs for certain time at designed temperature. The resultant PD-CNCs can be used to stabilize metallic and inorganic nanoparticles, which could be generated in-situ , and further immobilized on the surface of PD coated CNCs. Benefiting from the improved stability, the resultant nanoparticles immobilized PD-CNC system also generally possess higher catalytic activity than the nanoparticles alone.

    Abstract translation: 本发明涉及使用聚多巴胺(PD)包被的纤维素纳米晶体(CNCs)作为模板来进一步共轭功能低聚物(胺,羧酸等)和固定各种类型的CNC混合纳米材料纳米粒子,以提高其在水溶液中的稳定性 解决方案,例如 在CNC上制备银纳米颗粒。 通过多巴胺的表面官能化可以通过在设计温度下混合多巴胺和CNCs达一定时间。 所得的PD-CNCs可用于稳定金属和无机纳米颗粒,其可以原位产生,并进一步固定在PD涂覆的CNCs的表面上。 受益于改进的稳定性,所得到的固定化PD-CNC系统的纳米颗粒通常具有比单独的纳米颗粒更高的催化活性。

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