细菌纤维素膜基图灵斑图聚合物膜的制备

Preparation of Turing Pattern Polymer Membrane Based on Bacterial Cellulose Membrane

细菌纤维素膜具有超精细的纳米网络框架结构以及优良的力学特性,因而基于细菌纤维素膜的复合材料应用十分广泛。基于"反应-扩散"模型,采用界面聚合反应,在细菌纤维素膜的网状结构上自组装构建出具有微米尺度图灵结构的聚合物薄膜,并采用扫描电子显微镜(SEM)对图灵结构聚合物表面形貌进行表征。探讨了不同反应条件对所得聚合物形貌的影响,结果表明:所用细菌纤维素膜的厚度及其与均苯三甲酰氯溶液的接触面积会影响氨基化合物的浓度衰减速率,从而影响其聚合形成特定斑图形貌的时间。这一结果将为图灵结构聚合物膜复合材料的合成提供指导。

Bacterial cellulose membrane(BCM)has hyperfine nano-network structure and excellent mechanical properties so that the composite materials based on BCM have been widely used.The polymer films with micron-scale Turing structure were self-assembled on BCM to form a novel composite membrane material by interfacial polymerization based on the"reaction-diffusion"theory.The surface morphology of Turing polymers was characterized by scanning electron microscope(SEM).The influences of experimental conditions on the surface morphology were investigated.The thickness of BCM used and the contact area with the solution of trimesoyl chloride would affect the concentration attenuation rate of activator and further affect the time for forming a certain pattern.The results will provide guidance for the synthesis of Turing polymer membrane composites.