环氧小麦秸杆纤维素球的制备及表征

Preparation and Characterization of Epoxy Wheat Straw Cellulose Sphere

以自制的小麦秸秆纤维素为原料,通过对直接活化成球环氧化和先交联后活化环氧化进行正交试验,比较了直接活化、仅交联和先交联后活化三种条件下的环氧值,得到了最佳环氧化条件。在两条制备途径各自最佳实验条件下,通过先交联后活化,可使环氧值增大到0.7074mol/100g,并制备了环氧小麦秸秆纤维素球。通过扫描电镜和红外光谱表征,证实制取的环氧小麦秸秆纤维素球具有圆球的形状和一定的孔隙结构,且环氧化后引入了环氧基官能团。

Utilizing self-made wheat straw cellulose as raw materials, orthogonal tests was carded out in terms of being epoxidized by direct activation into ball and by firstly cross-linked followed by activated, comparing to the epoxy value under three conditions that is, only direct activated, post-crosslinked and firstly cross-linked followed by activated, the optimal epoxidation conditions were obtained. Epoxy value could be increased to 0.7074 mol/100 g, under their respective optimum conditions of two channels, through being firstly cross-linked followed by activated. Epoxy wheat straw cellulose sphere was prepared, with preparation method being simple. And its characterization of the IR and SEM were carried out, it could be confirmed that the epoxy wheat straw cellulose sphere preparation possesses sphere shape and a certain degree of pore structure and contains epoxy functional group.