摘要
采用NaOH/H2O2氧化法合成了羟基化水溶性多壁碳纳米管(MWCNTols)。通过正交实验法对反应条件进行了优化,并采用TEM、SEM、拉曼光谱等手段对样品进行了表征。MWCNTols在水溶液中的溶解度可达0.72 mg/mL。在此基础上将MWCNTols经聚乙烯吡咯烷酮(PVP)包裹后合成了PVP-MWCNTols。由于PVP良好的亲水性进一步增强了包裹产物在水中的分散性能,其溶解度可达2.34 mg/mL,且水溶液均匀、稳定,在室温下保存60 d以上不发生聚集和沉淀。PVP-MWC-NTols中MWCNTols的质量分数为41%。
Water-soluble hydroxylated multi-wall carbon nanotubes （MWCNTols） were synthesized by the NaOH/H2 02 oxidation method. A L9（34 ） orthogonal experimental design was used to optimize the preparation conditions, and TEM, SEM and Raman spectroscopy were used to characterize the products. The solubility of as-prepared MWCNTols in water was 0.72 mg/mL. Further- more, MWCNTols were wrapped by polyvinylpyrrolidone （PVP） by solution blending. Good water-solubility of PVP further in- creases the stability and dispersibility of MWCNTols in water. The content of MWCNTols in PVP-MWCNTols is calculated to be as high as 41 mass%. The solubility of PVP-MWCNTols in water was up to 2.34 mg/mL. No aggregation or sedimentation was ob- served for a saturated solution during more than 2 month storage at room temperature.
出处
《新型炭材料》
SCIE
EI
CAS
CSCD
北大核心
2013年第2期94-100,共7页
New Carbon Materials
基金
国家自然科学基金(90922023)
教育部博士点基金-博导类项目~~
关键词
多壁碳纳米管
羟基化
水溶性
包裹
聚乙烯吡咯烷酮
Multi-walled carbon nanotubes （MWCNTs）
Hydroxylate
Water-soluble
Wrapping
Polyvinylpyrrolidone （PVP）
