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Synthesis and molecular weight and structural determinations of (polyvinylpyrrolidone)‐ oximate‐silico‐benzoyl glycine copolymer with IR and NMR spectroscopy
Author(s) -
Singh Man,
Chauhan Sushila
Publication year - 2007
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.25681
Subject(s) - copolymer , polyvinylpyrrolidone , oxime , chemistry , polymer chemistry , proton nmr , glycine , molecular mass , infrared spectroscopy , nuclear chemistry , polymer , organic chemistry , enzyme , biochemistry , amino acid
Polyvinylpyrrolidone (PVP)‐oximate‐silico‐benzoyl glycine (POSBG) copolymer has been prepared taking PVP and benzoyl glycine with tetraethylorthosilicate as binder. Average viscosity molecular weights ( M v ) each of PVP‐oxime and POSBG were determined with dilute aqueous solutions. For molecular weights primarily a calibration curve between intrinsic viscosities [η] and different molecular weights of polyvinyl alcohol (marker) has been obtained to determine M v of oxime as 42,042 g mol −1 . Similarly the M v of POSBG as 80,297.13 g mol −1 was determined with [η] of lysozyme (molecular weight = 24,000 g mol −1 ) egg albumin (40,000 g mol −1 ) and BSA (65,000 g mol −1 ). For structural illustration, IR spectra of PVP‐oxime and copolymer were recorded in Nujol, which do not depict band frequency of OH group of binder. The 1602, 1688, 1182, and 1127 cm −1 stretching vibration frequencies noted in spectra infer presence of CN, CO, SiOSi, and SiOC groups, respectively, in POSBG. Structures of PVP‐oxime unit of POSBG are supported with Proton NMR. The work is aimed to develop new valuable biosensor and conducting copolymer molecule to serve as useful biochip and a biocompatible template. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2007