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    一种明胶-壳聚糖-羧甲基纤维素生物材料的制备方法
    2.
    发明公开
    一种明胶-壳聚糖-羧甲基纤维素生物材料的制备方法 无效

    公开(公告)号：CN109401338A

    公开(公告)日：2019-03-01

    申请号：CN201811176606.5

    申请日：2018-10-10

    Applicant: 江苏银杏湖生物科技有限公司

    Inventor： 蒋旭

    IPC: C08L89/00 ,  C08L5/08 ,  C08L1/28 ,  C08J9/28

    CPC classification number: C08J9/28 ,  C08J2201/0524 ,  C08J2389/00 ,  C08J2401/28 ,  C08J2405/08

    Abstract: 本发明公开了一种明胶-壳聚糖-羧甲基纤维素生物材料的制备方法，包括：(1)将壳聚糖溶于质量分数为2～4％的醋酸溶液中，搅拌30～40min，再缓慢滴加质量分数为1～3％的羧甲基纤维素水溶液，调节溶液的pH值为5～6，在800～1200r/min的转速下搅拌反应5～10h，得到壳聚糖-羧甲基纤维素混合悬浊液；(2)将一定量的明胶溶解在去离子水中，超声分散1～3h，于室温下放置12～24h使其充分溶胀，得到质量分数为1～10％的明胶溶液；(3)将所述壳聚糖-羧甲基纤维素混合悬浊液与所述明胶溶液混合均匀，所得混合液于真空条件下干燥，除去溶剂，再倒入支架模具中，冷冻成型，于0～5℃条件下低温干燥12～24h脱模，洗涤，得到明胶-壳聚糖-羧甲基纤维素生物材料。本发明中的材料孔隙率高、力学性能好。

    Polyethylene Aerogel and Method of Production
    6.
    发明申请
    Polyethylene Aerogel and Method of Production 审中-公开
    聚乙烯气凝胶及其生产方法

    公开(公告)号：US20150247016A1

    公开(公告)日：2015-09-03

    申请号：US14700387

    申请日：2015-04-30

    Applicant: Yosry A. Attia

    Inventor： Yosry A. Attia

    IPC: C08J9/00

    CPC classification number: C08J9/00 ,  C08J9/28 ,  C08J9/33 ,  C08J2201/0482 ,  C08J2201/0524 ,  C08J2205/026 ,  C08J2323/04 ,  C08J2323/06 ,  C08J2323/08

    Abstract: A method for making polyethylene aerogels, including high molecular weight aerogels, commences by in a hydrocarbon solvent (e.g., toluene or benzene) in which polyethylene is insoluble at room temperature, adding polyethylene to the solvent heated to a temperature at which said polyethylene is soluble to form a reaction mixture. A free-radical catalyst is added to the reaction mixture and the reaction mixture is held until the desired gelation of the polyethylene has been achieved. The reaction mixture is cooled to about room temperature; and the hydrocarbon solvent is replaced with a gas (e.g., CO2 or air) to form the polyethylene aerogel. Optionally, the cooled reaction mixture can be contacted with an anti-solvent for polyethylene to replace the hydrocarbon solvent with the anti-solvent. Silica aerogel particles can be encapsulated in polyethylene aerogel by adding the particles to the polyethylene gelation reaction mixture.

    Abstract translation: 制造聚乙烯气凝胶的方法，包括高分子量气凝胶，在烃溶剂（如甲苯或苯）中开始，其中聚乙烯在室温下不溶解，加入聚乙烯加热到所述聚乙烯可溶的温度 以形成反应混合物。 向反应混合物中加入自由基催化剂，并保持反应混合物，直至达到所需的聚乙烯凝胶化。 将反应混合物冷却至约室温; 并且用气体（例如CO 2或空气）代替烃溶剂以形成聚乙烯气凝胶。 任选地，冷却的反应混合物可与用于聚乙烯的反溶剂接触以用抗溶剂代替烃溶剂。 通过将颗粒加入到聚乙烯凝胶化反应混合物中，可以将二氧化硅气凝胶颗粒包封在聚乙烯气凝胶中。

    Polymeric aerogel fibers and fiber webs
    8.
    发明授权
    Polymeric aerogel fibers and fiber webs 有权
    聚合气凝胶纤维和纤维网

    公开(公告)号：US09540495B2

    公开(公告)日：2017-01-10

    申请号：US14727905

    申请日：2015-06-02

    Applicant: Yosry A. Attia

    Inventor： Yosry A. Attia

    IPC: C08J9/28 ,  D03D15/00

    CPC classification number: C08J9/28 ,  C08J2201/0502 ,  C08J2201/0524 ,  C08J2205/026 ,  C08J2323/06 ,  C08J2323/12 ,  C08J2327/20 ,  C08J2331/04 ,  D03D15/00 ,  Y10T442/3325

    Abstract: Polyethylene aerogels and aerogel fiber webs have a high degree of molecular alignment and interconnected fibers, which offer good mechanical strength and high porosity with open interconnected three-dimensional pore structure of the aerogel fibers. The high porosity of the aerogel fibers forming the web, offer a distinct advantage over solid fibers and fiber webs formed from polymer melts, or other non-gel form of polymer solutions. In this procedure, the polymer in solution is made into cross-linked gel with three-dimensional open pore structure before introducing it to the fiber web making process.

    Abstract translation: 聚乙烯气凝胶和气凝胶纤维网具有高度的分子取向和互连的纤维，其提供良好的机械强度和高孔隙率，其中气凝胶纤维具有开放的互连的三维孔结构。 形成纤维网的气凝胶纤维的高孔隙率比固体纤维和由聚合物熔体或其它非凝胶形式的聚合物溶液形成的纤维网具有显着的优点。 在该方法中，将溶液中的聚合物制成具有三维开孔结构的交联凝胶，然后将其引入纤维网制备过程。

    FORMING POROUS SCAFFOLD FROM CELLULOSE DERIVATIVES
    9.
    发明公开
    FORMING POROUS SCAFFOLD FROM CELLULOSE DERIVATIVES 有权
    BILDUNG EINESPORÖSENGERÜSTSAUS CELLULOSE-DERIVATEN

    公开(公告)号：EP2234655A1

    公开(公告)日：2010-10-06

    申请号：EP08863269.0

    申请日：2008-12-18

    Applicant: Agency for Science, Technology And Research

    Inventor： YUE, Zhilian ,  WEN, Feng ,  YU, Hanry

    IPC: A61L27/20 ,  A61L27/56 ,  C08F6/14 ,  C08L1/08

    CPC classification number: B32B3/26 ,  A61L27/20 ,  A61L27/56 ,  C08B11/20 ,  C08J9/28 ,  C08J2201/024 ,  C08J2201/026 ,  C08J2201/0484 ,  C08J2201/0524 ,  C08J2205/044 ,  C08J2207/10 ,  C08J2301/28 ,  C08L1/14 ,  Y10T428/249921 ,  Y10T428/249978 ,  Y10T428/249979 ,  C08L1/28

    Abstract: Scaffold comprises a polymer defining macropores and comprising hydroxypropylcellulose partially substituted by a substituent comprising a self-crosslinkable group, which is crosslinked through the self-crosslinkable group. The macropores have an average pore size larger than 50 microns and are at least partially interconnected. In one method, bicontinuous emulsion comprising a continuous aqueous phase and a continuous polymer phase is formed. The polymer phase comprises hydroxypropylcellulose partially substituted by a substituent comprising a self-crosslinkable group, and is crosslinked through the self-crosslinkable group to form a polymer defining at least partially interconnected pores. In another method, phase separation is induced in a solution comprising a polymer precursor and water to form a bicontinuous emulsion comprising a continuous polymer phase and a continuous aqueous phase. The polymer precursor comprises a self-crosslinkable group and is crosslinked through the self-crosslinkable group in the emulsion to form a polymer defining at least partially interconnected macropores.

    Abstract translation: 脚手架包含限定大孔的聚合物，并且包含部分由包含通过自交联基团交联的自交联基团的取代基取代的羟丙基纤维素。 大孔具有大于50微米的平均孔径并且至少部分互连。 在一种方法中，形成包含连续水相和连续聚合物相的双连续乳液。 聚合物相包含部分由包含自交联基团的取代基取代的羟丙基纤维素，并且通过自交联基团交联以形成限定至少部分互连的孔的聚合物。 在另一种方法中，在包含聚合物前体和水的溶液中诱导相分离，以形成包含连续聚合物相和连续水相的双连续乳液。 聚合物前体包含自交联基团，并且通过乳液中的自交联基团交联以形成限定至少部分互连的大孔的聚合物。

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