State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences , Lanzhou 730000, China.
University of Chinese Academy of Sciences , Beijing 100049, China.
ACS Appl Mater Interfaces. 2017 May 31;9(21):18295-18304. doi: 10.1021/acsami.7b04079. Epub 2017 May 18.
Semi-interpenetrated polyvinyl alcohol polymer networks (SIPNs) were prepared by integrating various charged components into polyvinyl alcohol polymer. Contact angle measurement, attenuated total reflection Fourier transform infrared spectroscopy, field emission scanning electron microscopy, and tensile tests were used to characterize the physicochemical properties of the prepared SIPNs. To investigate the contribution of charges to marine antifouling, the adhesion behaviors of green algae Dunaliella tertiolecta and diatoms Navicula sp. in the laboratory and of the actual marine animals in field test were studied for biofouling assays. The results suggest that less algae accumulation densities are observed for neutral-, anionic-, and zwitterionic-component-integrated SIPNs. However, for the cationic SIPNs, despite the hydration shell induced by the ion-dipole interaction, the resistance to biofouling largely depends on the amount of cationic component because of the possible favorable electrostatic attraction between the cationic groups in SIPNs and the negatively charged algae. Considering that the preparation of novel nontoxic antifouling coating is a long-standing and cosmopolitan industrial challenge, the SIPNs may provide a useful reference for marine antifouling and some other relevant fields.
半互穿聚乙烯醇聚合物网络（SIPN）是通过将各种带电组分整合到聚乙烯醇聚合物中制备的。通过接触角测量、衰减全反射傅里叶变换红外光谱、场发射扫描电子显微镜和拉伸试验来表征所制备的 SIPN 的物理化学性质。为了研究电荷对海洋防污的贡献，通过实验室中绿藻杜氏盐藻和硅藻舟形藻的附着行为以及野外试验中实际海洋动物的附着行为研究了生物污损试验。结果表明，中性、阴离子和两性离子组分整合的 SIPN 观察到的藻类积累密度较低。然而，对于阳离子 SIPN，尽管离子偶极相互作用诱导了水合壳，但由于 SIPN 中的阳离子基团和带负电荷的藻类之间可能存在有利的静电吸引，因此抗生物污损的能力在很大程度上取决于阳离子组分的含量。考虑到制备新型无毒防污涂料是一个长期存在且全球化的工业挑战，SIPN 可能为海洋防污和其他一些相关领域提供有益的参考。
