Ghosh Tapas Kumar, Gope Shirshendu, Mondal Dibyendu, Bhowmik Biplab, Mollick Md Masud Rahaman, Maity Dipanwita, Roy Indranil, Sarkar Gunjan, Sadhukhan Sourav, Rana Dipak, Chakraborty Mukut, Chattopadhyay Dipankar
Department of Polymer Science and Technology, University of Calcutta, 92 A.P.C. Road, Kolkata 700 009, India.
Department of Chemical and Biological Engineering, Industrial Membrane Research Institute, University of Ottawa, 161 Louis Pasteur St., Ottawa, ON K1N 6N5, Canada.
Int J Biol Macromol. 2014 May;66:338-45. doi: 10.1016/j.ijbiomac.2014.02.054. Epub 2014 Mar 6.
Graphene oxide (GO) was synthesized by Hummer's method and characterized by using Fourier transform infrared spectroscopy and Raman spectroscopy. The as synthesized GO was used to make GO/hydroxypropylmethylcellulose (HPMC) nanocomposite films by the solution mixing method using different concentrations of GO. The nanocomposite films were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) and thermo-gravimetric analysis. Mechanical properties, water absorption property and water vapor transmission rate were also measured. XRD analysis showed the formation of exfoliated HPMC/GO nanocomposites films. The FESEM results revealed high interfacial adhesion between the GO and HPMC matrix. The tensile strength and Young's modulus of the nanocomposite films containing the highest weight percentage of GO increased sharply. The thermal stability of HPMC/GO nanocomposites was slightly better than pure HPMC. The water absorption and water vapor transmission rate of HPMC film was reduced with the addition of up to 1 wt% GO.
采用Hummer法合成氧化石墨烯（GO），并通过傅里叶变换红外光谱和拉曼光谱对其进行表征。将合成的GO用于通过溶液混合法制备不同浓度GO的GO/羟丙基甲基纤维素（HPMC）纳米复合薄膜。通过X射线衍射（XRD）、场发射扫描电子显微镜（FESEM）和热重分析对纳米复合薄膜进行表征。还测量了其力学性能、吸水性和水蒸气透过率。XRD分析表明形成了剥离的HPMC/GO纳米复合薄膜。FESEM结果显示GO与HPMC基体之间具有较高的界面附着力。含有最高重量百分比GO的纳米复合薄膜的拉伸强度和杨氏模量急剧增加。HPMC/GO纳米复合材料的热稳定性略优于纯HPMC。添加高达1 wt%的GO可降低HPMC薄膜的吸水性和水蒸气透过率。
