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    • 4. 发明授权
    • Low protein-binding polymer product produced using low HLB number non-ionic surfactant
    • 使用低HLB值非离子表面活性剂制备的低蛋白结合聚合物产物
    • US06319664B1
    • 2001-11-20
    • US09507422
    • 2000-02-18
    • Dana Craig BookbinderEdward John Fewkes, Jr.James Arthur GriffinFrances M. SmithDavid L. Tennent
    • Dana Craig BookbinderEdward John Fewkes, Jr.James Arthur GriffinFrances M. SmithDavid L. Tennent
    • C12Q100
    • C07H21/00B01L3/50B01L3/5082B01L2200/12B01L2300/16B05D7/02C07B2200/11C08J7/047C08J7/065C08J2471/00C09D5/00G01N33/54393
    • Hydrophobic polymer surfaces whose level of protein binding is less than about 50-80 ng/cm2 are achieved by: (1) applying to a hydrophobic polymer surface a coating solution composed of a solvent and a non-ionic surfactant having a HLB number of less than 5 and at least one hydrophilic element which can extend into an aqueous solution; and (2) drying the surface to remove the solvent and thereby bring the surfactant into direct contact with the hydrophobic polymer. The combination of a low HLB number and the drying step have been found to produce low binding surfaces which can withstand multiple washes with water and/or protein-containing solutions. Alternatively, the low binding surfaces can be produced by applying the non-ionic surfactant to mold surfaces which contact molten polymer and form the polymer into a desired shape, e.g., into a multi-well plate, a pipette tip, or the like. Further, the low binding surfaces may be produced by incorporating non-soluble, non-ionic surfactants having an HLB number of less than or equal to 10 into a polymer blend prior to molding the article. Molding uses shear condition that cause the surfactant to move to the surface of a polymer product formed by the molding such that a hydrophilic part of the surfactant extends from the surface to provide a surface having low binding for proteins.
    • 蛋白质结合水平小于约50-80ng / cm 2的疏水性聚合物表面通过以下方式实现:(1)将疏水性聚合物表面施用由HLB值少的溶剂和非离子表面活性剂组成的涂布溶液 可以延伸至水溶液中的至少一种亲水性元素; 和(2)干燥表面以除去溶剂,从而使表面活性剂与疏水性聚合物直接接触。 已经发现低HLB值和干燥步骤的组合产生低结合表面,其可以经受多次用水和/或蛋白质溶液洗涤。 或者,低结合表面可以通过将非离子表面活性剂施加到与熔融聚合物接触的模具表面并将聚合物形成期望的形状,例如多孔板,移液管尖端等中来制备。 此外,低粘合表面可以通过将HLB数小于或等于10的非可溶性非离子表面活性剂在模制制品之前加入到聚合物共混物中来制备。 成型使用剪切条件,使得表面活性剂移动到通过模制形成的聚合物产品的表面,使得表面活性剂的亲水部分从表面延伸,以提供具有低蛋白质结合的表面。