Pigareva Vladislava A, Senchikhin Ivan N, Bolshakova Anastasia V, Sybachin Andrey V
Chemistry Department, Lomonosov Moscow State University, 119991 Moscow, Russia.
Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 119071 Moscow, Russia.
Polymers (Basel). 2022 Mar 19;14(6):1247. doi: 10.3390/polym14061247.
Polymer coatings based on polycations represent a perspective class of protective antimicrobial coatings. Polydiallyldimethylammonium chloride (PDADMAC) and its water-soluble complexes with sodium polystyrenesulfonate (PSS) were studied by means of dynamic light-scattering, laser microelectrophoresis and turbidimetry. It was shown that addition of six mol.% of polyanion to polycation results in formation of interpolyelectrolyte complex (IPEC) that was stable towards phase separation in water-salt media with a concentration of salts (NaCl, CaCl, NaSO, MgSO) up to 0.5 M. Most of the polyelectrolyte coatings are made by layer-by-layer deposition. The utilization of water-soluble IPEC for the direct deposition on the surface was studied. The coatings from the PDADMAC and the PSS/PDADMAC complex were formed on the surfaces of hydrophilic glass and hydrophobic polyvinylchloride. It was found that formation IPEC allows one to increase the stability of the coating towards wash-off with water in comparison to individual PDADMAC coating on both types of substrates. The visualization of the coatings was performed by atomic force microscopy and scanning electron microscopy.
基于聚阳离子的聚合物涂层是一类很有前景的保护性抗菌涂层。通过动态光散射、激光微电泳和比浊法对聚二烯丙基二甲基氯化铵（PDADMAC）及其与聚苯乙烯磺酸钠（PSS）的水溶性复合物进行了研究。结果表明，向聚阳离子中添加6摩尔%的聚阴离子会导致形成聚电解质络合物（IPEC），该络合物在盐（NaCl、CaCl、NaSO、MgSO）浓度高达0.5 M的水盐介质中对相分离具有稳定性。大多数聚电解质涂层是通过逐层沉积制成的。研究了利用水溶性IPEC直接沉积在表面的情况。在亲水性玻璃和疏水性聚氯乙烯表面形成了PDADMAC和PSS/PDADMAC复合物涂层。结果发现，与两种类型基材上的单个PDADMAC涂层相比，形成IPEC可以提高涂层对水洗的稳定性。通过原子力显微镜和扫描电子显微镜对涂层进行了可视化观察。
