Hydrogels of N-acylchitosans and their cellulose composites generated from the aqueous alkaline solutions.
Hydrogels of N-acetyl and N-propionylchitosans were prepared form aqueous solutions of sodium N-acylchitosan salts (alkaline N-acylchitosans) and sodium N-acylchitosan xanthate [O-(sodiumthio)thiocarbonyl N-acylchitosan], respectively, by standing at room temperature and on heating. Novel hydrogels of N-acetylchitosan-cellulose and N-propionylchitosan-cellulose composites were also prepared from sodium cellulose xanthate [O-(sodiumthio)thiocarbonyl cellulose] solutions mixed with sodium N-acylchitosan salts and with sodium N-acylchitosan xanthates, respectively.
Hirano
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S
Chitin/Chitosan R and D Institute, Tottori, Japan.
Usutani
A
A
D002482:Cellulose / Q000737:chemistry*; D002686:Chitin / Q000031:analogs & derivatives* / Q000737:chemistry / Q000378:metabolism; D002688:Chitinases / Q000737:chemistry / Q000378:metabolism; D048271:Chitosan; D005782:Gels / Q000737:chemistry*; D006860:Hydrogen Bonding; D006868:Hydrolysis; D009682:Magnetic Resonance Spectroscopy; D009113:Muramidase / Q000737:chemistry / Q000378:metabolism; D012996:Solutions; D017550:Spectroscopy, Fourier Transform Infrared; D014867:Water
D005782:Gels; D012996:Solutions; C087305:chitin xanthate; D014867:Water; D002686:Chitin; C012693:N-acetylchitosan; D002482:Cellulose; D048271:Chitosan; D002688:Chitinases; D009113:Muramidase