title: Characterization of cellulose II nanoparticles regenerated from 1-butyl-3-methylimidazolium chloride.
abstract: Regenerated cellulose nanoparticles (RCNs) including both elongated fiber and spherical structures were prepared from microcrystalline cellulose (MCC) and cotton using 1-butyl-3-methylimidazolium chloride followed by high-pressure homogenization. The crystalline structure of RCNs was cellulose II in contrast to the cellulose I form of the starting materials. Also, the RCNs have decreased crystallinity and crystallite size. The elongated RCNs produced from cotton and MCC had average lengths of 123 ± 34 and 112 ± 42 nm, and mean widths of 12 ± 5 and 12 ± 3 nm, respectively. The average diameter of spherical RCNs from MCC was 118 ± 32nm. The dimensions of the various RCNs were all well fitted with an asymmetrical log-normal distribution function. The RCN has a two-step pyrolysis, different from raw MCC and cotton that have a one-step process.
authors.affiliation: School of Renewable Natural Resources, Louisiana State University AgCenter, Baton Rouge, LA 70803, United States.
authors.forename: Jingquan
authors.initials: J
authors.lastname: Han
authors.forename: Chengjun
authors.initials: C
authors.lastname: Zhou
authors.forename: Alfred D
authors.initials: AD
authors.lastname: French
authors.forename: Guangping
authors.initials: G
authors.lastname: Han
authors.forename: Qinglin
authors.initials: Q
authors.lastname: Wu
mesh_terms: D002482:Cellulose / Q000737:chemistry*; D003460:Crystallization; D007093:Imidazoles / Q000737:chemistry*; D052578:Ionic Liquids / Q000737:chemistry; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D011312:Pressure
chemical_list: D007093:Imidazoles; D052578:Ionic Liquids; C502841:1-butyl-3-methylimidazolium chloride; D002482:Cellulose