强极性大孔树脂的合成与表征

Preparation and characterization of strong polar macroporous resin

本实验制备的大孔吸附树脂主要以己二酰氯等为原料,以一定比例的吡啶与1,4-二氧六环的混合溶液为复合氧化剂,在纤维素的均相溶液中,加入一定比例的环己烷与石蜡的混合溶液为致孔剂聚合而成。其中,纤维素为聚合单体,己二酰氯为交联剂,它们互相交联聚合形成了大孔吸附树脂的多孔骨架结构,是一类含离子交换基团的交联聚合物。合成的大孔树脂利用傅利叶红外光谱仪进行基团表征,用扫描电子显微镜进行树脂成孔表征,结果显示合成了新型大孔树脂。以芦丁为吸附质探讨了合成的大孔树脂对苷类物质的吸附性能,包括平衡吸附、静态吸附与解吸,同时研究了不同溶剂对该树脂吸附性能的影响。综合比较发现,当用乙醇做溶剂时吸附性能最好,解吸时用水做洗脱液最好,并且吸附数据表明芦丁在树脂上的吸附符合Freundlich等温吸附方程。

The macro porous adsorption resin produced in this experiment mainly usesd dipole dichloride etc.as the material,a certain proportion of mixed solution composed of pyridine and 1,4-dioxane as the composite oxidant.Then adding a certain proportion of mixed solution composed of cyclopean and paraffin in the homogeneous solution of cellulose as the photogenic agent.As a result,these materials polymerized,and generated the resin.Among these materials,the cellulose was polymeric monomer,dipole dichloride was cross linker,and they crosslinked and polymerized each other,forming the porous skeletal structure of the macro porous adsorption resin,which was a kind of cross linked polymer consisting of ion exchange group.For synthetic macro porous resin,using Fourier infrared spectrometer for pressed characterization,and scanning electron microscope（SEM） for resin pore-forming characterization,the results showsed that the new macro porous resin has been synthesized.Rutin was takien as adsorbate explored the adsorption property of the synthetic macro porous resin to glycoside material,including property of equilibrium adsorption,static adsorption and desorption.Meanwhile the influence of different solvents on the resin adsorption property were testified.After a general comparison,we found that the resin had the strongest adsorption property in ethanol solvent,while for adsorption,the best effect is reached when using water as the elegant.What＇s more,the adsorption data showed that the desorption of rutin on the resin conformed to the Freundlich isothermal adsorption equation.