Department of Chemistry, College of Science Al-zulfi, Majmaah University, Al-Majmaah 11952, Saudi Arabia; Textile Materials and Processes Research Unit, Tunisia National Engineering School of Monastir, University of Monastir, Tunisia.
Department of Chemistry, College of Science Al-zulfi, Majmaah University, Al-Majmaah 11952, Saudi Arabia; Department of Biology, College of Science Al-zulfi, Majmaah University, Al-Majmaah 11952, Saudi Arabia.
Int J Biol Macromol. 2020 Aug 1;156:1091-1103. doi: 10.1016/j.ijbiomac.2019.11.140. Epub 2019 Nov 19.
Herein, λ-carrageenan-calcium phosphate (λ-Carr-Cp), carboxymethylcellulose (CMC) and celite 545 (Ce545) were used to functionalize sodium alginate bio-polymer (SAB). The water content in the wet beads was about 98%. Fourier Transform Infra-Red (FT-IR) showed that SAB@λ-Carr-Cp, SAB@CMC, and SAB@Ce545 could interact through intermolecular hydrogen and electrostatic interactions. Scanning Electron Microscopy (SEM) revealed that the morphology of the functionalized beads had a porous sheet structure. Energy Dispersive X-Ray (EDX) depicted that the peak intensity of the carbon element became more intense in the case of organic modification. The appearance of mineral elements characteristics of Ce545 (Si, Al) and Cp (P) proved the incorporation of these inorganic reagents into the alginate matrix. The data from batch adsorption experiments indicated that the adsorption of methylene blue (MB) depended on pH, time, temperature, and dye concentration. At equilibrium, the adsorption capacities followed the order: SAB@Ce545 (7.5 mg g wet) > SAB@λ-carr-Cp (6.8 mg g wet) > SAB@CMC (6.5 mg g wet) > SAB (5.77 mg g wet). Kinetic data agreed with pseudo second-order suggesting chemi-sorption mechanism. The equilibrium data fitted for Freundlich. In summary, this provided assembly strategy could offer a new research opportunity for developing functionalized biopolymers with new functions and potential applications.
在此，使用 λ-卡拉胶-磷酸钙（λ-Carr-Cp）、羧甲基纤维素（CMC）和 Celite 545（Ce545）对海藻酸钠生物聚合物（SAB）进行功能化。湿珠中的水含量约为 98%。傅里叶变换红外（FT-IR）表明，SAB@λ-Carr-Cp、SAB@CMC 和 SAB@Ce545 可以通过分子间氢键和静电相互作用相互作用。扫描电子显微镜（SEM）显示，功能化珠的形态具有多孔片状结构。能量色散 X 射线（EDX）描绘了在有机修饰的情况下，碳元素的峰强度变得更强。Ce545（Si、Al）和 Cp（P）的矿物元素特征的出现证明了这些无机试剂已经掺入到海藻酸盐基质中。批量吸附实验的数据表明，亚甲基蓝（MB）的吸附取决于 pH 值、时间、温度和染料浓度。在平衡时，吸附容量的顺序为：SAB@Ce545（7.5 mg g 湿）>SAB@λ-Carr-Cp（6.8 mg g 湿）>SAB@CMC（6.5 mg g 湿）>SAB（5.77 mg g 湿）。动力学数据符合准二级，表明化学吸附机制。平衡数据符合 Freundlich 模型。总之，这种组装策略为开发具有新功能和潜在应用的功能化生物聚合物提供了新的研究机会。
