Method of synthesizing silica nanofibers using sound waves
    83.
    发明授权
    Method of synthesizing silica nanofibers using sound waves 有权
    使用声波合成二氧化硅纳米纤维的方法

    公开(公告)号:US09132405B2

    公开(公告)日:2015-09-15

    申请号:US14178648

    申请日:2014-02-12

    申请人: UT-Battelle, LLC

    摘要: A method for synthesizing silica nanofibers using sound waves is provided. The method includes providing a solution of polyvinyl pyrrolidone, adding sodium citrate and ammonium hydroxide to form a first mixture, adding a silica-based compound to the solution to form a second mixture, and sonicating the second mixture to synthesize a plurality of silica nanofibers having an average cross-sectional diameter of less than 70 nm and having a length on the order of at least several hundred microns. The method can be performed without heating or electrospinning, and instead includes less energy intensive strategies that can be scaled up to an industrial scale. The resulting nanofibers can achieve a decreased mean diameter over conventional fibers. The decreased diameter generally increases the tensile strength of the silica nanofibers, as defects and contaminations decrease with the decreasing diameter.

    摘要翻译: 提供了使用声波合成二氧化硅纳米纤维的方法。 该方法包括提供聚乙烯吡咯烷酮溶液,加入柠檬酸钠和氢氧化铵以形成第一混合物,向溶液中加入二氧化硅基化合物以形成第二混合物,并超声处理第二混合物以合成多个二​​氧化硅纳米纤维, 平均截面直径小于70nm,长度为数百微米。 该方法可以在没有加热或静电纺丝的情况下进行,而是包括能够扩大到工业规模的较少的能量密集型策略。 所得的纳米纤维可以实现比常规纤维更小的平均直径。 由于缺陷和污染物随着直径的减小而减小,直径的减小通常会增加二氧化硅纳米纤维的拉伸强度。

    POLYPHOSPHAZENES
    85.
    发明申请
    POLYPHOSPHAZENES 有权
    多晶硅

    公开(公告)号:US20150141540A1

    公开(公告)日:2015-05-21

    申请号:US14408160

    申请日:2013-06-20

    IPC分类号: C08G79/02 B01J19/10

    摘要: Substituted poly(phosphazene) compounds comprising a combination of units having one or more of the structures (i) to (iii) wherein: the combination comprises R1 and R2; each R1, is independently an optionally substituted alkyl- or alkyl ether-based side chain containing an isocyanate-reactive moiety, an epoxide-reactive moiety, an amine-reactive moiety, a supramolecular noncovalent bonding moiety, or combinations thereof; and each R2 is independently an optionally substituted alkyl- or alkyl ether-based side chain containing nitro, nitramine, nitrate ester, azide, an ammonium compound moiety with energetic counter-ion, or combinations thereof. Methods of making the compounds are also described.

    摘要翻译: 包含具有一种或多种结构(i)至(iii)的单元组合的取代的聚(磷腈)化合物,其中:所述组合包含R1和R2; 每个R 1独立地是含有异氰酸酯反应性部分,环氧化物反应性部分,胺反应性部分,超分子非共价键合部分或其组合的任选取代的烷基或烷基醚基侧链; 并且每个R 2独立地是含有硝基,硝胺,硝酸酯,叠氮化物,具有高能反离子的铵化合物部分或其组合的任选取代的烷基 - 或烷基醚 - 侧链。 还描述了制备化合物的方法。