Istanbul Technical University, Faculty of Arts & Sciences, Department of Chemistry, Maslak TR34469, Istanbul, Turkey.
Carbohydr Polym. 2016 Aug 20;147:37-44. doi: 10.1016/j.carbpol.2016.03.073. Epub 2016 Mar 26.
This study aims at evaluation of cellulose recovered from agricultural waste (corn cob) in terms of synthesis of graft copolymers, polymer/clay nanocomposites, and nanofibers. The copolymers and nanocomposites were synthesized in aqueous solution using Ce(4+) initiator. Conditions (concentrations of the components, reaction temperature, and period) were determined first for copolymer synthesis to obtain the highest conversion ratio. Then found parameters were used to synthesize nanocomposites adding clay mineral to reaction medium. Although there was a decrease in conversion in nanocomposites syntheses, thermal and rheologic measurements indicated enhancements compared to pristine copolymer. Obtained polymeric materials have been successfully electrospun into nanofibers and characterized. Average diameter of the nanofibers was about 650nm and was strongly influenced by NaMMT amount in the nanocomposite sample.
本研究旨在评估从农业废弃物（玉米芯）中回收的纤维素，用于合成接枝共聚物、聚合物/粘土纳米复合材料和纳米纤维。共聚物和纳米复合材料是在水溶液中使用 Ce(4+)引发剂合成的。首先确定了条件（各组分的浓度、反应温度和周期），以获得最高的转化率，然后使用找到的参数合成纳米复合材料，将粘土矿物添加到反应介质中。尽管纳米复合材料合成中的转化率有所下降，但热和流变测量表明与原始共聚物相比有所提高。所得到的聚合物材料已成功地电纺成纳米纤维并进行了表征。纳米纤维的平均直径约为 650nm，并且强烈受到纳米复合材料样品中 NaMMT 含量的影响。
