title: Chitin based polyurethanes using hydroxyl terminated polybutadiene. Part I: molecular engineering.
abstract: Chitin based polyurethanes (PUs) using hydroxyl terminated polybutadiene (HTPB) as soft segment were prepared and the structure of the proposed PU was confirmed using FTIR spectrometer. PU prepolymer was prepared using HTPB and toluene-2,4-diisocyanate (TDI), and the chain was extended with different proportions of 1,4-butane diol (BDO) and chitin. During the detailed FTIR study, it was observed that tri-functional character of chitin results in the formation of network structure due to crosslinking of the material, whereas bi-functional aliphatic diol based polyurethane produced linear PU. Hydrogen bonding between the hard segments was identified by the IR spectroscopy. The scanning electron microscope (SEM) analysis also confirmed the cross-linked structure.
authors: Institute of Chemistry, Government College University, Faisalabad 38030, Pakistan. ziakmpkpolym@yahoo.com
authors: Khalid Mahmood
authors: KM
authors: Zia
authors: Kashif
authors: K
authors: Mahmood
authors: Mohammad
authors: M
authors: Zuber
authors: Tahir
authors: T
authors: Jamil
authors: Muhammad
authors: M
authors: Shafiq
mesh_terms: D002070:Butadienes / Q000737:chemistry*; D002072:Butylene Glycols / Q000737:chemistry*; D002686:Chitin / Q000737:chemistry*; D020724:Elastomers / Q000737:chemistry*; D006860:Hydrogen Bonding; D008855:Microscopy, Electron, Scanning; D011140:Polyurethanes / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared
chemical_list: D002070:Butadienes; D002072:Butylene Glycols; D020724:Elastomers; D011140:Polyurethanes; D002686:Chitin; C039681:1,4-butanediol; C028834:polybutadiene