Polyurethane/polyethersulphone composite hollow fibers produced by simultaneous spinning of two polymer solutions
Polyurethane/polyethersulphone composite hollow fibers produced by simultaneous spinning of two polymer solutions
复制标题
DOI：
10.1016/j.memsci.2007.11.030
复制
发表时间：
2008-03-20
影响因子：
9.5
通讯作者：
Borges, Cristiano P.
中科院分区：
文献类型：
--
作者：
Duarte, Luciana T.;Pereira, Cristina C.;Borges, Cristiano P.
在这项工作中，复合中空纤维的制备是通过使用三孔纺丝机同时纺丝两种聚合物溶液。聚合物溶液由橡胶状（聚氨酯）和玻璃状（聚醚砜）聚合物组成，分别形成表皮和支撑体。具有这些特征的中空纤维有资格用于许多应用中，包括VOC回收，以及作为促进传输膜，前提是载体可以并入橡胶层中。研究了不同的合成条件，并通过扫描电子显微镜对中空纤维的形貌进行了表征。结果表明，采用该工艺可以制备出表层与支撑层结合紧密、表皮致密的聚氨酯/聚醚砜复合膜。在聚氨酯溶液中使用与载体溶液中的溶剂不同的挥发性溶剂，例如THE，也允许形成具有致密表皮和聚氨酯与聚醚砜层之间完全粘附的中空纤维膜。(C)2007 Elsevier B. V.保留所有权利。
In this work, composite hollow fibers were prepared by simultaneous spinning of two polymer solutions using a triple orifice spinneret. The polymer solutions were composed of a rubbery (polyurethane) and a glassy (polyethersulfone) polymer to form skin and support, respectively. Hollow fibers with those features are eligible to be used in many applications, including VOC recovery, and as facilitated transport membranes, given that carriers can be incorporated in the rubbery layer. Different synthesis conditions were investigated and the hollow fiber morphologies were characterized by scanning electron microscopy. The results showed that it is possible to produce the polyurethane/polyethersulphone composite membranes, with adhesion between the top and the support layers, and with dense skin. The use of a volatile solvent in the polyurethane solution, such as THE, different from the solvent in the support solution, also allowed the formation of hollow fiber membranes with dense skin and complete adhesion between the polyurethane and the polyethersulphone layers. (C) 2007 Elsevier B.V. All rights reserved.