Chemical modification of keratin biofibres by graft polymerisation of methyl methacrylate using redox initiation

Abstract Graft copolymerisation of methyl methacrylate was carried out on keratin from chicken feathers. The chemical modification of the fibrous protein was achieved using a redox initiation system consisting of potassium permanganate, sulfuric acid and malic acid. To obtain optimum conditions of grafting, the effects of different concentrations of monomer, acids and oxidant system have been investigated. In addition natural and grafted fibres were characterised by Fourier transform infrared spectrometry and Raman spectroscopy to observe the chemical modification on keratin structure and the possible reactive sites involved in grafting. The morphologic variation was observed with scanning electron microscopy. The results show that an effective yield of grafting was achieved with this system depending on established reaction parameters.

[1]  V. Castaño,et al.  Dynamical-mechanical and thermal analysis of polymeric composites reinforced with keratin biofibers from chicken feathers , 2007 .

[2]  M. Bengisu,et al.  Grafting of poly(triethylene glycol dimethacrylate) onto chitosan by ceric ion initiation , 2007 .

[3]  A. S. Aly,et al.  Preparation and application of chitosan/poly(methacrylic acid) graft copolymer , 2006 .

[4]  P. Sobral,et al.  Influence of the glycerol concentration on some physical properties of feather keratin films , 2006 .

[5]  J. Laurindo,et al.  Influence of plasticizers on the water sorption isotherms and water vapor permeability of chicken feather keratin films , 2006 .

[6]  O. Higa,et al.  Synthesis and characterization of membranes obtained by graft copolymerization of 2-hydroxyethyl methacrylate and acrylic acid onto chitosan. , 2006, International journal of pharmaceutics.

[7]  Alfred C. Loos,et al.  Contributions of feather fibers and various cellulose fibers to the mechanical properties of polypropylene matrix composites , 2006 .

[8]  V. Castaño,et al.  Mechanical properties evaluation of new composites with protein biofibers reinforcing poly(methyl methacrylate) , 2005 .

[9]  Claudio Tonin,et al.  A study on the electrical conductivity decay of polypyrrole coated wool textiles , 2005 .

[10]  V. Castaño,et al.  Microstructural characterisation of keratin fibres from chicken feathers , 2005 .

[11]  Walter F. Schmidt,et al.  Polyethylene reinforced with keratin fibers obtained from chicken feathers , 2005 .

[12]  T. Tanabe,et al.  Rapid fabrication of keratin-hydroxyapatite hybrid sponges toward osteoblast cultivation and differentiation. , 2005, Biomaterials.

[13]  T. Tanabe,et al.  Preparation and physicochemical properties of compression-molded keratin films. , 2004, Biomaterials.

[14]  Zhonghe Zhou,et al.  Four-winged dinosaurs from China , 2003, Nature.

[15]  K. Deng,et al.  Graft copolymerization of butyl acrylate onto casein initiated by potassium diperiodatonickelate(IV) in alkaline medium , 2002 .

[16]  K. Gupta,et al.  Graft copolymerization of 4-vinylpyridine onto cellulose using Co (III) acetylacetonate comlex in aqueous medium , 2001 .

[17]  Xing Xu,et al.  Branched integumental structures in Sinornithosaurus and the origin of feathers , 2001, Nature.

[18]  C. Saikia,et al.  Graft copolymerization of methylmethacrylate onto non-mulberry silk-Antheraea assama using potassium permanganate–oxalic acid redox system , 2000 .

[19]  P. Ghosh,et al.  Uncatalysed photografting of poly(methyl methacrylate) from photofunctionalised sisal fibre , 2000 .

[20]  S. Belfer.  Surface characterization by FTIR-ATR spectroscopy of polyethersulfone membranes-unmodified, modified and protein fouled , 2000 .

[21]  Y. Ozaki,et al.  Two-dimensional Fourier-transform Raman and near-infrared correlation spectroscopy studies of poly(methyl methacrylate) blends , 2000 .

[22]  K. Ishihara,et al.  Chemical modification of silk fibroin with 2-methacryloyloxyethyl phosphorylcholine. II. Graft-polymerization onto fabric through 2-methacryloyloxyethyl isocyanate and interaction between fabric and platelets. , 2000, Biomaterials.

[23]  A. Bonazza,et al.  Free radical grafting onto cellulose in homogeneous conditions. 2. Modified cellulose–methyl methacrylate system , 2000 .

[24]  G. Freddi,et al.  Chemical modification of wool fibers with acid anhydrides , 1999 .

[25]  H. Edwards,et al.  FT-Raman spectroscopic study of keratotic materials: horn, hoof and tortoiseshell. , 1998, Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy.

[26]  G. Freddi,et al.  Structure and properties of tussah silk fibers graft‐copolymerized with methacrylamide and 2‐hydroxyethyl methacrylate , 1998 .

[27]  G. Freddi,et al.  Graft copolymerization of benzyl methacrylate onto wool fibers , 1997 .

[28]  V. Fávere,et al.  Adsorption of calcium ions by graft copolymer of acrylic acid on biopolymer chitin , 1996 .

[29]  G. Socrates,et al.  Infrared characteristic group frequencies : tables and charts , 1994 .

[30]  G. Giri,et al.  Grafting onto wool fibers : graft copolymerization of methyl methacrylate onto wool fibers initiated by KHSO5/Fe(III) couple , 1991 .

[31]  P. Nayak,et al.  Grafting vinyl monomers onto silk fibers. XV. Graft copolymerization of methyl methacrylate onto silk using thallium (III) as initiator , 1982 .

[32]  D. Das,et al.  Trivalent manganese chelate-initiated graft copolymerization of methyl methacrylate onto silk fibers† , 1981 .

[33]  Charles J. Pouchert.  The Aldrich library of infrared spectra , 1970 .

[34]  M. Lipson.  A New Method for Forming Vinyl Polymers in Wool , 1949, Nature.