Dipartimento STEBICEF, Sez. Chimica, Università degli Studi di Palermo, Viale delle Scienze, Ed. 17, 90128 Palermo, Italy.
Dipartimento di Fisica e Chimica, Università degli Studi di Palermo, Viale delle Scienze, Ed. 17, 90128 Palermo, Italy.
J Colloid Interface Sci. 2019 Nov 1;555:394-402. doi: 10.1016/j.jcis.2019.07.100. Epub 2019 Jul 31.
Polydopamine (PDA) is widely used as hydrophilic coating for several applications. However, most of the methods studied to improve or manipulate PDA properties are multistep and time-consuming, and there is a need for versatile strategies aimed at controlling and modifying the properties of PDA.
PDA-halloysite nanocomposites were produced under different oxidation conditions in alkaline and acidic media and were characterized by UV-visible and attenuated total refraction- Fourier Transform Infrared spectroscopies, thermogravimetric analysis, porosimetry, scanning electron microscopy, X-ray diffraction and contact angle measurements against the reference PDA polymer.
Inclusion of the inorganic halloysite nanofiller in the PDA component was found to affect the thermal properties of the nanocomposite as well as its structure, depending on the experimental conditions. The ability of the nanocomposites to adsorb organic dyes as possible membrane coatings for environmental remediation was also investigated by different models, suggesting promising applications as adsorbents for the treatment of wastewaters.
聚多巴胺 (PDA) 被广泛用作多种应用的亲水涂层。然而，为了改善或控制 PDA 性能而研究的大多数方法都是多步骤和耗时的，因此需要灵活的策略来控制和修饰 PDA 的性能。
在碱性和酸性介质中的不同氧化条件下制备 PDA-埃洛石纳米复合材料，并通过紫外可见分光光度法、衰减全反射-傅里叶变换红外光谱法、热重分析、孔隙率、扫描电子显微镜、X 射线衍射和接触角测量对参考 PDA 聚合物进行了表征。
发现无机埃洛石纳米填料的加入会影响纳米复合材料的热性能及其结构，这取决于实验条件。还通过不同的模型研究了纳米复合材料作为环境修复用有机染料吸附膜涂层的能力，表明其作为废水处理吸附剂具有广阔的应用前景。
