Isolation and Characterization of Nanocellulose Obtained from Industrial Crop Waste Resources by Using Mild Acid Hydrolysis  

作　　者：Galia Moreno Karla Ramirez Marianelly Esquivel Guillermo Jimenez 

机构地区：[1]Laboratory of Polymers(POLIUNA),School of Chemistry,National University,Heredia,Costa Rica

出　　处：《Journal of Renewable Materials》2018年第4期362-369,共8页可再生材料杂志（英文）

摘　　要：Cellulose,microcrystalline cellulose and nanocellulose were prepared from three agricultural waste resources:pineapple leaf(PALF),banana rachis(BR),and sugarcane bagasse(SCB).Each waste resource was first converted into microcrystalline cellulose which was subsequently converted into cellulose nanoparticles by using mild(30%w/v)and strong(60%w/v)sulfuric acid concentrations for extraction.Fourier transform infrared spectroscopy(FTIR),X-ray diffraction(XRD),and thermogravimetric analysis(TGA)were used to characterize each waste resource and extracted cellulosic materials.Furthermore,nanocelluloses were studied by zeta potential,size analysis,and transmission electron microscopy(TEM).Cellulose nanowhiskers were successfully obtained and isolated with a 33%average yield by applying a mild acid treatment.Substrates BR and SCB proved to be more promising agricultural waste resources in terms of their crystalline cellulosic content and properties.

关 键 词：Cellulose PINEAPPLE leaf sugarcane BAGASSE banana RACHIS WHISKERS 

分 类 号：O62[理学—有机化学]