Polymeric membranes and other polymer articles having desired surface characteristics and method for their preparation
    1.
    发明授权
    Polymeric membranes and other polymer articles having desired surface characteristics and method for their preparation 有权
    聚合物膜和具有所需表面特性的其它聚合物制品及其制备方法

    公开(公告)号:US06413621B1

    公开(公告)日:2002-07-02

    申请号:US09258526

    申请日:1999-02-26

    IPC分类号: B01D6700

    摘要: Polymeric articles, including membranes, with surfaces having a desired chemical functionality are created by surface segregation of a branched component blended with a compatible, matrix base component, the branched component having the desired chemical functionality. In particular, hydrophilic surfaces are created via surface segregation of a branched hydrophilic copolymer blended into a polymer matrix. The use of branched molecular architecture provides a thermodynamic mechanism for the segregation of the hydrophilic species to the surface and a means for achieving a high surface coverage of the hydrophilic moiety. The branched hydrophilic copolymer can be defined by a random copolymer including two or more methacrylate or acrylate monomers, at least one of which features a short hydrophilic side chain, such as a polyethylene glycol side chain. The branched hydrophilic copolymer is compatible, and well-entangled, with the acrylate polymer matrix.

    摘要翻译: 通过与相容的基质基质组分共混的支化组分的表面分离产生具有所需化学官能度的表面的聚合制品,包括膜,所述支化组分具有所需的化学官能度。 特别地,亲水性表面是通过共聚到聚合物基质中的支化亲水共聚物的表面偏析产生的。 支链分子结构的使用为亲水性物质与表面的分离提供了一种热力学机制,也是实现亲水部分高表面覆盖度的手段。 支链亲水共聚物可以通过包括两种或更多种甲基丙烯酸酯或丙烯酸酯单体的无规共聚物来限定,其中至少一种具有短亲水侧链如聚乙二醇侧链。 支链亲水共聚物与丙烯酸酯聚合物基质相容并且良好缠结。

    Graft copolymers
    5.
    发明授权
    Graft copolymers 失效
    接枝共聚物

    公开(公告)号:US07368505B2

    公开(公告)日:2008-05-06

    申请号:US11030576

    申请日:2005-01-05

    IPC分类号: C08L71/02 C08F259/00 C08J5/22

    摘要: This invention relates to methods of making graft copolymers, and articles having such graft copolymers. The methods may provide better control than in radicalization or photoinitiated polymerization techniques. For example, a graft copolymer can be prepared by reacting an alkoxide ion with a polymer. The alkoxide, in turn, can be provided by any suitable technique, for example, by reacting an alcohol with a base. In some embodiments of the invention, the graft copolymers may be a normally hydrophobic polymer, such as a polysulfone, that has been made more hydrophilic due to the attachment of hydrophilic side groups such as polyethylene glycol or polypropylene glycol. The copolymers of the invention have many uses, for example, in films or porous membranes.

    摘要翻译: 本发明涉及制备接枝共聚物的方法和具有这种接枝共聚物的制品​​。 该方法可以提供比在自由基化或光引发聚合技术更好的控制。 例如,可以通过使醇盐离子与聚合物反应来制备接枝共聚物。 醇盐又可以通过任何合适的技术提供,例如通过使醇与碱反应。 在本发明的一些实施方案中,接枝共聚物可以是通常疏水的聚合物,例如聚砜,由于亲水性侧基如聚乙二醇或聚丙二醇的附着而使其变得更亲水。 本发明的共聚物在膜或多孔膜中具有许多用途。

    Fouling Resistant Membranes Formed with Polyacrylonitrile Graft Copolymers
    7.
    发明申请
    Fouling Resistant Membranes Formed with Polyacrylonitrile Graft Copolymers 有权
    用聚丙烯腈接枝共聚物形成的防污膜

    公开(公告)号:US20110198288A1

    公开(公告)日:2011-08-18

    申请号:US12226121

    申请日:2007-04-10

    IPC分类号: B01D71/42 B01D71/82 B01D71/78

    摘要: The present application is generally directed towards polyacrylonitrile— (PAN—) based, amphophilic graft copolymers, for example, for the production of membranes for liquid filtration. In one aspect, the present invention provides systems and methods for preparing high flux, fouling resistant nanofiltration membranes whose pore size can be readily tuned. In some cases, microphase separation of a graft copolymer comprising a backbone comprising polyacrylonitrile (PAN) and hydrophilic side-chains is used. In some cases, nanochannels of tunable width are formed, which may give the membrane permselective properties and/or anti-fouling character. In some cases, a copoylmer may be used as an additive in the immersion precipitation casting of ultrafiltration or microfiltration membranes. In certain instances, the additive can segregate to the membrane exterior and/or pore surfaces, e.g., due to favorable interactions between the hydrophilic side chains and the surrounding environment, which may create a surface that resists fouling, e.g., by biological molecules.

    摘要翻译: 本申请一般针对基于聚丙烯腈(PAN-)的两亲性接枝共聚物,例如用于生产用于液体过滤的膜。 一方面,本发明提供了制备高通量,耐污垢的纳滤膜的系统和方法,其孔径可以容易地调节。 在一些情况下,使用包含包含聚丙烯腈(PAN)和亲水侧链的骨架的接枝共聚物的微相分离。 在某些情况下,可形成可调宽度的纳米通道,这可以提供膜选择性和/或抗结垢特性。 在一些情况下,可以在超滤或微滤膜的浸渍沉淀浇铸中使用共酰基树脂作为添加剂。 在某些情况下,例如由于亲水性侧链和周围环境之间的有利相互作用,添加剂可以分离到膜外部和/或孔表面,这可能产生例如通过生物分子阻止结垢的表面。

    Structured baroplastic materials
    8.
    发明授权
    Structured baroplastic materials 失效
    结构性压塑材料

    公开(公告)号:US07538157B2

    公开(公告)日:2009-05-26

    申请号:US11172371

    申请日:2005-06-29

    IPC分类号: C08L33/04

    摘要: The present invention provides a series of baroplastic materials, and systems and methods of making and using such baroplastic materials. In one aspect of the invention, polymeric particles are provided that can be used to produce baroplastic materials under certain pressures and/or below certain temperatures. In one set of embodiments, the polymeric particles include an inner “core” region and an outer “shell” region. In some cases, more than one “shell” region may be present. In another arrangement the particles can include materials, or domains, in nanoscale proximity with each other. Non-particulate materials can also be processed in accordance with the invention. In another aspect of the invention, the invention provides for polymeric particles that can be processed and/or recycled multiple times, without causing significant degradation or alteration in the physical and/or chemical properties of the polymer. In yet another aspect, the invention provides compositions able to form baroplastic materials upon the application of certain pressures, where the composition includes at least two chemically distinct materials in nanoscale proximity to each other. In still another aspect of the invention, a method of mixing two polymers upon the application of pressure is provided.

    摘要翻译: 本发明提供了一系列的压延材料,以及制造和使用这种压延材料的系统和方法。 在本发明的一个方面,提供聚合物颗粒,其可用于在某些压力和/或低于某些温度下制备压延材料。 在一组实施方案中,聚合物颗粒包括内部“芯”区域和外部“壳”区域。 在某些情况下,可能存在多于一个“壳”区域。 在另一种布置中,颗粒可以包括纳米级彼此接近的材料或结构域。 也可以根据本发明加工非颗粒材料。 在本发明的另一方面,本发明提供可以多次加工和/或回收的聚合物颗粒,而不会导致聚合物的物理和/或化学性质的明显降解或改变。 在另一方面,本发明提供了能够在施加某些压力时形成压延材料的组合物,其中组合物包含至少两种在纳米级彼此接近的化学上不同的材料。 在本发明的另一方面,提供了在施加压力时混合两种聚合物的方法。

    Baroplastic materials
    9.
    发明授权
    Baroplastic materials 失效
    陶瓷材料

    公开(公告)号:US06632883B2

    公开(公告)日:2003-10-14

    申请号:US09788324

    申请日:2001-02-16

    IPC分类号: C08L5300

    摘要: The present invention relates to block copolymer compositions capable of being processed by the application of pressure. The invention also provides methods for predicting phase diagrams of polymer blends and block copolymers, particularly block copolymers comprising hard and soft blocks having properties described herein. The methods of the invention allow prediction of polymeric systems which can be processed under conditions that do not promote polymer degradation.

    摘要翻译: 本发明涉及能够通过施加压力加工的嵌段共聚物组合物。 本发明还提供了用于预测聚合物共混物和嵌段共聚物的相图的方法,特别是包含具有本文所述性质的硬和软嵌段的嵌段共聚物。 本发明的方法允许预测可在不促进聚合物降解的条件下加工的聚合物体系

    Self-doped microphase separated block copolymer electrolyte
    10.
    发明授权
    Self-doped microphase separated block copolymer electrolyte 有权
    自掺杂微相分离嵌段共聚物电解质

    公开(公告)号:US06361901B1

    公开(公告)日:2002-03-26

    申请号:US09360427

    申请日:1999-07-23

    IPC分类号: H01M618

    摘要: A polymer electrolyte includes a self-doped microphase separated block copolymer including at least one ionically conductive block and at least one second block that is immiscible in the ionically conductive block, an anion immobilized on the polymer electrolyte and a cationic species. The ionically conductive block provides a continuous ionically conductive pathway through the electrolyte. The electrolyte may be used as an electrolyte in an electrochemical cell.

    摘要翻译: 聚合物电解质包括自掺杂微相分离的嵌段共聚物,其包括至少一个离子导电嵌段和至少一个在离子导电嵌段中不混溶的第二嵌段,固定在聚合物电解质上的阴离子和阳离子物质。 离子导电嵌段提供通过电解质的连续离子导电通路。 电解质可以用作电化学电池中的电解质。