摘要
采用溶液聚合法制备聚丙烯酰胺/凹凸棒(PAM/ATP)复合吸附材料,经冷冻干燥处理、氮气保护条件下高温碳化制备出三维网络凹凸棒复合材料(APM),通过聚二甲基硅氧烷(PDMS)的化学气相沉积(CVD)有机改性APM得到三维凹凸棒疏水材料(PAPM)。采用XRD、SEM、BET、FT-IR等多种方法进行了表征,结果显示,PAM成功接枝到ATP表面,且APM表面疏松多孔;平均孔径从ATP的9.105 nm增加至APM的11.205 nm;PDMS成功改性APM,与ATP相比,PAPM对有机物的吸附量增大6倍以上,表明PAPM是一种良好的油/水分离吸附材料,具有选择性吸附性能。
In this work, three dimensional attapulgite hydrophobic material （PAPM） was synthesized by using solution polymerization, freeze- drying method, thermolysis treatment and modification with polydimethylsiloxanc （PDMS）. Then, the samples were investigated by XRD, SEM, BET, FT-IR and other methods. Observation showed that the polypropylene amide （PAM） was successfully grafted onto the surface of the attapulgite （ATP） and the three dimensional network attapulgite composite （APM） was the spongy structure. The average pore size increased from 9.105 nm of ATP to 11.205 nm of APM. The APM was successfully modified by using PDMS, which was characterized by FT-IR. It was found that organic solvents adsorption capacity of the PAPM is more than 6 folds compared with those of the ATP. It indicates that the PAPM is a good material for oil/water separation and possesses excellent selective adsorption.
出处
《非金属矿》
CAS
CSCD
北大核心
2015年第2期11-14,共4页
Non-Metallic Mines
基金
国家自然科学基金(51262019
51462021)
甘肃省自然科学基金(1308RJZA102)
关键词
凹凸棒
冷冻干燥
三维网络
选择性吸附
聚二甲基硅氧烷
attapulgite
freeze-drying
three dimensional network
selective adsorption
polydimethylsiloxane
