林产化学与工业2018，Vol.38Issue(2)：67-74,8.DOI:10.3969/j.issn.0253-2417.2018.02.009
氧化纤维素的制备及其对碳纳米管的分散效果
Preparation of Oxidized Cellulose Being Used as Dispersant for Carbon Nanotubes
摘要
Abstract
The oxidized cellulose(OC) was prepared through selective oxidation of softwood dissolving pulp cellulose by HNO3/H3PO4/NaNO2oxidant. The effects of oxidizing conditions,e.g.,oxidizing time,temperature and dosages of NaNO2on the yields and carboxyl groups contents of OC were studied. The structures and properties of OC samples were characterized by Fourier transform infrared spectroscopy(FT-IR), X-ray diffraction(XRD) and thermogravimetric analysis(TGA) respectively. The nanoparticle solution was prepared by dispersing the OC sample in aqueous solution under ultrasound wave. The sizes and morphologies of particles were characterized by dynamic light scattering(DLS) and transmission electron microscopy(TEM). The results showed that the nanoparticles were spherical in shape with monodisperse, and the sizes of micelles were in the range of 30 nm to 80 nm. The optimum conditions of OC preoaration were as the followings: reaction temperature 50 ℃, NaNO2dosage 1.4 %and reaction for 12 h. Compared with water and cellulose, the OC nanoparticle was an excellent aqueous dispersant for multi-walled carbon nanotube(CNT).关键词
氧化纤维素/HNO3/H3PO4/NaNO2氧化体系/纳米粒子/多壁碳纳米管Key words
oxidized cellulose/HNO3/H3PO4/NaNO2oxidant systems/nanoparticles/multi-walled carbon nanotube分类
化学化工引用本文复制引用
刘真真,郭延柱,王兴,李海明..氧化纤维素的制备及其对碳纳米管的分散效果[J].林产化学与工业,2018,38(2):67-74,8.基金项目
国家自然科学基金青年基金资助项目(31500493) （31500493）
辽宁省博士科研启动基金指导计划项目(20170520300) （20170520300）
制浆造纸工程国家重点实验室开放基金资助(201747) （201747）
