title: Preparation and characterization of self-emulsified waterborne nitrocellulose.
abstract: Waterborne nitrocellulose (WNC) dispersion was successfully synthesized by self emulsification and reaction among isophorone diisocyanate (IPDI), dimethylol propionic acid (DMPA) and nitrocellulose (NC). The WNC was characterized by transmission electron microscopy (TEM), Fourier transform infrared (FTIR) spectroscopy and thermal gravimetric analysis (TGA), etc. The WNC dispersion has Z-average particle size of 133 nm approximately and distribution index of 0.152. It is indicated by TEM that the cured WNC particles show a core-shell structure, in which hydrophobic component is encapsulated by the hydrophilic carboxyl. FTIR confirms that the reactions (i.e. IPDI and NC, IPDI and DMPA) have occurred, the - NCO group of IPDI has been consumed totally and the backbone of NC is retained. TGA reveals that the cross-linked WNC film has better thermal resistance, and the water resistance measurement confirms that it has weaker water-sensitivity.
authors.affiliation: School of Materials Science and Engineering, Xihua University, Chengdu, Sichuan Province 610039, China.
authors.forename: Sude
authors.initials: S
authors.lastname: Ma
authors.affiliation: Institute of Advanced Materials, Graduated School at Shenzhen, Tsinghua University, Shenzhen, Guangdong Province 518055, China.
authors.forename: Guolin
authors.initials: G
authors.lastname: Song
authors.affiliation: School of Materials Science and Engineering, Xihua University, Chengdu, Sichuan Province 610039, China.
authors.forename: Ningbo
authors.initials: N
authors.lastname: Feng
mesh_terms: D001388:Aziridines / Q000737:chemistry; D003101:Collodion / Q000737:chemistry*; D003432:Cross-Linking Reagents / Q000737:chemistry; D004655:Emulsions; D005021:Ethylamines / Q000737:chemistry; D006880:Hydroxy Acids / Q000737:chemistry*; D017953:Isocyanates / Q000737:chemistry*; D046529:Microscopy, Electron, Transmission; D010316:Particle Size; D011422:Propionates / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013818:Thermogravimetry; D014867:Water / Q000737:chemistry
chemical_list: D001388:Aziridines; D003432:Cross-Linking Reagents; D004655:Emulsions; D005021:Ethylamines; D006880:Hydroxy Acids; D017953:Isocyanates; D011422:Propionates; D014867:Water; C015301:isophorone diisocyanate; C110034:2,2-bis(hydroxymethyl)-propionic acid; C033132:aziridine; D003101:Collodion; C016162:triethylamine