40333-00-4Relevant academic research and scientific papers
Flame-retardant thermoplastics derived from plant cell wall polymers by single ionic liquid substitution
Nishita, Ryunosuke,Kuroda, Kosuke,Ota, Shohei,Endo, Takatsugu,Suzuki, Shiori,Ninomiya, Kazuaki,Takahashi, Kenji
, p. 2057 - 2064 (2019)
Three components of plant cell walls - cellulose, hemicellulose and lignin - were converted into flame-retardant thermoplastics by adducting only a single ionic liquid species via covalent bonds. They showed thermoplasticity and formed thin films by hot pressing. They also showed flame retardancy and self-extinguished the fire during burning. The properties of the samples depend on the cation species of ionic liquids adducted and thus are controllable. In the present study, more than 66% of the hydroxyl groups present on the polymers were maintained after derivatisation; they thus have the potential for further functionalisation for moulding, practical use and so on, in addition to flame retardancy and thermoplasticity.
Hydrophobic and low-density amino acid ionic liquids
Kagimoto, Junko,Taguchi, Satomi,Fukumoto, Kenta,Ohno, Hiroyuki
experimental part, p. 133 - 138 (2010/11/18)
A series of tetraalkylphosphonium amino acid salts was synthesized to determine the effect of ion structure, in particular the length of alkyl chains, on physico-chemical properties such as density, viscosity, glass transition temperature, and decomposition temperature. The resulting alkylphosphonium amino acid ionic liquids (AAILs) all had low density, from 0.886 to 0.945 g cm- 3 at 25 °C. The density was tunable by varying the alkyl-chain length, regardless of the symmetry of the phosphonium cations. When the alkyl chains on the phosphonium cation were hexyl or longer, the AAILs were phase-separated upon mixing with water because of their hydrophobicity, and floated on top of the water phase. The water content in the ILs depended on the amino acid side chains and on the alkyl-chain length on the cations.
