Zhao He, Lin Xinxing, Lu Shengchang, Wu Hui, Zhou Xiaxing, Huang Liulian, Li Jianguo, Shi Jianping, Tong Wenxuan, Yuan Hongmei, Chen Lihui
College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian, China.
National Forestry and Grassland Administration Key Laboratory of Plant Fiber Functional Materials, Fuzhou, Fujian, China.
Front Chem. 2023 Mar 21;11:1150635. doi: 10.3389/fchem.2023.1150635. eCollection 2023.
Bamboo fiber/polypropylene composites (BPCs) have been widely used in buildings, interior decoration, and automobile components. However, pollutants and fungi can interact with the hydrophilic bamboo fibers on the surface of Bamboo fiber/polypropylene composites, degrading their appearance and mechanical properties. To improve their anti-fouling and anti-mildew properties, a superhydrophobic modified Bamboo fiber/polypropylene composite (BPC-TiO-F) was fabricated by introducing titanium dioxide (TiO) and poly(DOPAm--PFOEA) onto the surface of a Bamboo fiber/polypropylene composite. The morphology of BPC-TiO-F was analyzed by XPS, FTIR, and SEM. The results showed that TiO particles covered on Bamboo fiber/polypropylene composite surface complexation between phenolic hydroxyl groups and Ti atoms. Low-surface-energy fluorine-containing poly(DOPAm--PFOEA) was introduced onto the Bamboo fiber/polypropylene composite surface, forming a rough micro/nanostructure that endowed BPC-TiO-F with superhydrophobicity (water contact angle = 151.0° ± 0.5°). The modified Bamboo fiber/polypropylene composite exhibited excellent self-cleaning properties, and a model contaminant, FeO powder, was rapidly removed from the surface by water drops. BPC-TiO-F showed excellent anti-mold performance, and no mold was on its surface after 28 days. The superhydrophobic BPC-TiO-F had good mechanical durability and could withstand sandpaper abrasion with a weight load of 50 g, finger wiping for 20 cycles, and tape adhesion abrasion for 40 cycles. BPC-TiO-F showed good self-cleaning properties, mildew resistance, and mechanical resistance, giving it promising applications for automotive upholstery and building decoration.
竹纤维/聚丙烯复合材料（BPCs）已广泛应用于建筑、室内装饰和汽车零部件等领域。然而，污染物和真菌会与竹纤维/聚丙烯复合材料表面的亲水性竹纤维相互作用，降低其外观和力学性能。为了提高其防污防霉性能，通过在竹纤维/聚丙烯复合材料表面引入二氧化钛（TiO）和聚（多巴胺-全氟辛酸乙酯）制备了一种超疏水改性竹纤维/聚丙烯复合材料（BPC-TiO-F）。采用XPS、FTIR和SEM对BPC-TiO-F的形貌进行了分析。结果表明，TiO颗粒覆盖在竹纤维/聚丙烯复合材料表面，酚羟基与Ti原子之间发生络合。低表面能含氟聚（多巴胺-全氟辛酸乙酯）被引入到竹纤维/聚丙烯复合材料表面，形成粗糙的微/纳米结构，赋予BPC-TiO-F超疏水性（水接触角=151.0°±0.5°）。改性后的竹纤维/聚丙烯复合材料表现出优异的自清洁性能，模型污染物FeO粉末能被水滴迅速从表面去除。BPC-TiO-F表现出优异的防霉性能，28天后其表面无霉菌生长。超疏水的BPC-TiO-F具有良好的机械耐久性，能承受50 g重量负荷的砂纸磨损、20次手指擦拭和40次胶带粘贴磨损。BPC-TiO-F具有良好的自清洁、防霉和耐机械性能，在汽车内饰和建筑装饰方面具有广阔的应用前景。
