Porvair Technology, Unit 73, Clywedog Road South, Wrexham, UK.
Anal Bioanal Chem. 2013 Aug;405(20):6489-96. doi: 10.1007/s00216-013-7087-7. Epub 2013 Jun 9.
An application of plasma-induced grafting of polyethylene membranes with a thin layer of molecularly imprinted polymer (MIP) was presented. High-density polyethylene (HDPE) membranes, "Vyon," were used as a substrate for plasma grafting modification. The herbicide atrazine, one of the most popular targets of the molecular imprinting, was chosen as a template. The parameters of the plasma treatment were optimized in order to achieve a good balance between polymerization and ablation processes. Modified HDPE membranes were characterized, and the presence of the grafted polymeric layer was confirmed based on the observed weight gain, pore size measurements, and infrared spectrometry. Since there was no significant change in the porosity of the modified membranes, it was assumed that only a thin layer of the polymer was introduced on the surface. The experiments on the re-binding of the template atrazine to the membranes modified with MIP and blank polymers were performed. HDPE membranes which were grafted with polymer using continuous plasma polymerization demonstrated the best result which was expressed in an imprinted factor equal to 3, suggesting that molecular imprinting was successfully achieved.
介绍了一种通过等离子体诱导接枝聚乙烯膜并形成薄的分子印迹聚合物（MIP）层的应用。高密度聚乙烯（HDPE）膜“Vyon”被用作等离子体接枝改性的基底。莠去津作为分子印迹最受欢迎的目标之一被选为模板。为了在聚合和烧蚀过程之间取得良好的平衡，优化了等离子体处理的参数。对改性的 HDPE 膜进行了表征，并根据观察到的增重、孔径测量和红外光谱证实了接枝聚合物层的存在。由于改性膜的孔隙率没有明显变化，因此可以假设仅在表面引入了聚合物的薄层。对用 MIP 和空白聚合物改性的膜进行模板莠去津再结合的实验。使用连续等离子体聚合接枝聚合物的 HDPE 膜表现出最佳结果，印迹因子等于 3，表明成功实现了分子印迹。
