纤维素
表面改性
化学工程
材料科学
结晶度
氧化铁
纳米颗粒
氧化铁纳米粒子
磁性纳米粒子
傅里叶变换红外光谱
氧化物
聚合物
粒径
复合材料
纳米技术
冶金
工程类
作者
Evans Suter,Omwoyo N. Wesley,Lawrence Koech,Simphiwe M. Nelana,Hilary Rutto
出处
期刊:Coatings
[MDPI AG]
日期:2022-12-26
卷期号:13 (1): 39-39
被引量:11
标识
DOI:10.3390/coatings13010039
摘要
This work reports on the structural modification of cellulosic materials with magnetic iron oxide nanoparticles through the co-precipitation method. Cellulose is one of the most abundant natural polymers with chemical variability brought about by the presence of several hydroxyl groups, allowing its surface modifications through the insertion of several chemical groups to impact its cellulosic characteristics. Thus, the objective of this study was to synthesize magnetic iron oxide nanoparticles (MNPs) through co-precipitation, followed by in situ incorporation of MNPs onto chemically purified cellulose (CPC) and cellulose nanocrystals (CNC). The composites were characterized for thermal properties using TGA, molecular structure using FTIR, surface morphology using SEM, elemental composition using electron dispersion spectroscopy (EDS), and crystallinity using XRD. The prepared composites presented improved crystal, thermal, and surface properties. CNC-MNPs and CPC-MNPs bore particle sizes of 26.94 and 37.72 nm, respectively, whereas MNPs’ particle size was 10.3 nm. EDS analysis indicated that Fe, C, and Cl were the main elements present in the composites. Surface modification of the cellulosic materials presented excellent sorption surface properties and can be used in several industrial processes, such as wastewater purification, air filtration, and various environmental remediation processes.
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