Kubheka Nompumelelo S M, Moloto Makwena J
Institute for Nanotechnology and Water Sustainability, College of Science, Engineering and Technology, University of South Africa, Florida Park Campus, 1709, South Africa.
Heliyon. 2023 Aug 29;9(9):e19595. doi: 10.1016/j.heliyon.2023.e19595. eCollection 2023 Sep.
Incorporation of nanomaterials into polymers and their blend provide additional advantages to their use and structural support. Metals such as Ag, Cu, Ti, and Fe are often reported in their metallic or their oxide forms for applications in microbiological, water treatment, and biomedical fields. The integration of metal oxide nanoparticles into polymer fiber blends overcomes the mechanical instability and compatibility challenges of nanomaterials. Manganese-based oxides provide good stability and optical properties in their nanoscale useful in polymeric composite or fiber materials enhancement. MnO and MnO nanoparticles were synthesized at different calcination temperatures using the co-precipitation method and characterized a microscopic technique TEM, and TGA. TEM images and the XRD patterns confirmed that the manganese oxide nanoparticle were spheres and rod-shaped with corresponding cryptomelane and orthorhombic crystalline phases. MnO nanoparticles were successfully integrated into zein/PVA (80/20) fiber blends. SEM images confirmed that the inclusion of the nanoparticles into zein/PVA solutions increased the conductivity of the solutions which led to an improved morphology and increased surface area to volume ratio. XRD patterns and TGA showed that the incorporated nanoparticles were below the detection limit, therefore there was no significant change observed. Therefore, all characterization techniques illustrated that the effect of concentration significantly enhanced the morphology of the fiber blends.
将纳米材料掺入聚合物及其共混物中，为其使用和结构支撑提供了额外的优势。银、铜、钛和铁等金属通常以金属或其氧化物形式被报道用于微生物学、水处理和生物医学领域。将金属氧化物纳米颗粒整合到聚合物纤维共混物中，克服了纳米材料的机械不稳定性和相容性挑战。锰基氧化物在纳米尺度上具有良好的稳定性和光学性能，可用于增强聚合物复合材料或纤维材料。采用共沉淀法在不同煅烧温度下合成了MnO和MnO纳米颗粒，并用透射电子显微镜（TEM）和热重分析（TGA）等微观技术对其进行了表征。TEM图像和X射线衍射（XRD）图谱证实，氧化锰纳米颗粒为球形和棒状，分别对应于锰钾矿和正交晶相。MnO纳米颗粒成功地整合到玉米醇溶蛋白/聚乙烯醇（80/20）纤维共混物中。扫描电子显微镜（SEM）图像证实，将纳米颗粒加入玉米醇溶蛋白/聚乙烯醇溶液中提高了溶液的导电性，从而改善了形态并增加了表面积与体积比。XRD图谱和TGA表明，掺入的纳米颗粒低于检测限，因此未观察到显著变化。因此，所有表征技术都表明，浓度的影响显著增强了纤维共混物的形态。
