作　　者： (刘鸿）; (霍继臻）; (梁俊）; (温瑞恒）; (黄忠辉）; (吕洁）; (余英丰）; (唐晓林）;

机构地区： 广西中烟工业有限责任公司,南宁市北湖南路28号530001

出　　处： 《烟草科技》 2017年第8期68-74,共7页

摘　　要： 以多巴胺及介孔硅基材料对电子烟储油棉进行改性,探索其对烟油的吸附及解吸的影响。将电子烟储油棉置于多巴胺水溶液中,得到表面吸附聚多巴胺的改性储油棉。以甲苯二异氰酸酯作偶联剂,使多巴胺改性储油棉表面吸附介孔材料。通过称量法、热失重分析,测定两种改性储油棉的烟油吸附与解吸效果。结果表明:(1)储油棉经多巴胺改性后,其饱和单位吸附量提高约50%。(2)在多巴胺改性储油棉基础上吸附介孔材料后,大孔径介孔材料使储油棉的饱和单位吸附量进一步提高8.57%,小孔径介孔材料使其提高3.23%。(3)改性储油棉的烟油完全解吸所需温度略有提高,但均小于储油棉自身分解温度275℃,表明烟油可以在储油棉发生自身分解前完全解吸。 In order to investigate the oil adsorption and desorption properties, the oil-absorbing cotton used for electronic cigarette wick was modified by dopamine and mesoporous silica materials. The modified cotton, on which the polydopamine adsorbed, was obtained by immersing the oil-absorbing cotton in dopamine aqueous solution. The dopamine-modified cotton further adsorbed mesoporous silica material by using toluene diisocyanate as coupling agent. The abilities of oil adsorption and desorption of the two kinds of modified oil-absorbing cotton were measured through weighing and thermogravimetric analysis. The results showed that： 1） The saturation adsorption of dopamine-modified oil-absorbing cotton increased by about 50%. 2） It was further promoted by 8.57% and 3.23% after the dopamine-modified cotton was modified by large aperture or small aperture mesoporous materials, respectively. 3） The complete desorption temperatures of the modified oil-absorbing cotton rose a little, but were still under the decomposition temperature of oil-absorbing cotton, 275 %. It indicated that the desorptive release of electronic liquids was complete before the decomposition of oil-absorbing cotton .

关 键 词： 电子烟 储油棉 多巴胺 介孔硅基材料 吸附 解吸