Saleh Naeemeh Sadat, Ostad Movahed Saeed, Attarbashi Fuzieh
Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran.
J Appl Biomater Funct Mater. 2022 Jan-Dec;20:22808000221095232. doi: 10.1177/22808000221095232.
The previous research showed the anti-biofouling improvement of the polyamide six (PA6) fiber when grafted by 2-hydroxyethyl methacrylate (HEMA) individually, and in combination with acrylic acid (AA) known as dual monomers system. The effects of several operative parameters, including vessel reaction temperature and time, ultra violet (UV) pre-irradiation time, and also HEMA-AA mole ratios (for dual system) on the surface grafting of a PA6 fiber by HEMA and also, dual HEMA-AA system were studied. The studied grafting parameters were grafting degree (), grafting efficiency (), formed homo and or co-polymer (), reaction extent (), and reaction ratio (). A pre-UV irradiation technique (PUVA) used for irradiation of the fibers. The results showed efficient polymerization and grafting reactions for the selected operative parameters. The increasing reaction temperature reduced the grafting of the HEMA and AA on the fiber surface. Instead, it accelerated the homo and or co-polymerization of the HEMA and AA monomers. The reaction time had the lowest effect on the homo and co-polymer formation of the used monomers in the studied dual HEMA-AA system. The increasing pre-UV irradiation time was beneficial for the grafting of the studied monomers on the PA6 fiber. The reason referred to increasing the number and concentration of the active sites on the fiber surface.
先前的研究表明，聚酰胺6（PA6）纤维单独用甲基丙烯酸2-羟乙酯（HEMA）接枝，以及与丙烯酸（AA）以双单体体系组合接枝时，其抗生物污染性能得到改善。研究了几个操作参数的影响，包括反应釜温度和时间、紫外线（UV）预辐照时间，以及HEMA与AA的摩尔比（对于双体系）对PA6纤维表面用HEMA以及双HEMA-AA体系进行接枝的影响。所研究的接枝参数有接枝度（）、接枝效率（）、形成的均聚物和或共聚物（）、反应程度（）和反应比（）。采用预紫外线辐照技术（PUVA）对纤维进行辐照。结果表明，对于选定的操作参数，聚合和接枝反应是有效的。反应温度升高会降低HEMA和AA在纤维表面的接枝率。相反，它加速了HEMA和AA单体的均聚和或共聚。在研究的双HEMA-AA体系中，反应时间对所用单体的均聚物和共聚物形成的影响最小。紫外线预辐照时间增加有利于所研究单体在PA6纤维上的接枝。原因是纤维表面活性位点的数量和浓度增加。
