香蕉纤维素微晶/聚苯胺复合气凝胶的制备及性能研究  

Study on preparation and properity of BFCM/PANI aerogel composite

作　　者：庞锦英[1] 莫羡忠[1] 刘钰馨[1] 谭登峰[1] 李建鸣[1] 

机构地区：[1]广西师范学院化学与材料科学学院,南宁530001

出　　处：《化工新型材料》2017年第5期112-114,共3页New Chemical Materials

基　　金：广西高校科学技术研究项目(KY2015LX197);广西科学研究与技术开发计划项目(桂科能14123006-27);广西高校科研基金项目(2013YB140)

摘　　要：采用碱煮的方法从香蕉茎中提取香蕉纤维,再通过对香蕉纤维进行预处理、碱处理、酸解等步骤制备香蕉纤维素微晶(BFCM),再使用BFCM和聚苯胺(PANI)制备成BFCM/PANI复合气凝胶。采用红外光谱(FT-IR)、X射线衍射(XRD)、扫描电镜(SEM)和静态容量法比表面积(BET)等方法对产物进行了表征。用原子吸收光谱(AAS)和SEM验证了气凝胶吸附Ag+的效果。FT-IR表明,所制BFCM的主要成分为纤维素;而XRD和SEM结果表明,香蕉纤维素微晶以纤维素Ⅰ的形式存在;BET结果表明,BFCM/PANI复合气凝胶的比表面积为14m2/g,平均孔直径(4V/A)为19.27nm,为介孔材料;AAS和SEM结果表明,该气凝胶对Ag十溶液有较好的去除率,最佳达到99%;Ag十能深入气凝胶内部,改变了以往仅仅是表面的PANI还原Ag+,有利于大规模的使用。Banana fiber was extracted from natural banana stem by means of alkali boiling,banana fiber cellulose microcrystal （BFCM） was extracted from banana fiber by chemical procedures such as pretreatment, alkaline extraction and acid hydrolysis. BFCM and the polyaniline（PANI） were used to preparing the aerogel composite. The aerogel was characterized by FT IR,XRD,SEM and BET,adsorption effect to the silver ion （Ag＋ ） was measured by AAS and SEM. The re suits proved that the obtained cellulose microerystal was present in the form of cellulose I. The BET result showed that the specific surface area of banana microcrystalline cellulose/polyaniline composites was 14 me/g,average pore diameter （4V/ A） was 19.27nm,it was microporous material. AAS and SEM showed that the compound in Ag＋ solution had good reduc tion rate,can reach 99%, silver ions can penetrate within the aerogel, the polyaniline only on the surface can reduction the silver ion （Ag ＋） was changed, the composites were suitable to the need of large scale.

关 键 词：吸附 离子液体 制备 气凝胶 复合材料 

分 类 号：O648.17[理学—物理化学]