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Preparation and characterization of protein‐free natural rubber
Author(s) -
Chaikumpollert Oraphin,
Yamamoto Yoshimasa,
Suchiva Krisda,
Nghia Phan Trung,
Kawahara Seiichi
Publication year - 2012
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.1965
Subject(s) - natural rubber , pulmonary surfactant , urea , materials science , solvent , chemical engineering , transmission electron microscopy , polymer chemistry , organic chemistry , chemistry , composite material , nanotechnology , engineering
Protein‐free natural rubber was prepared by incubation of natural rubber latex with urea and polar organic solvent in the presence of surfactant. Effect of the polar organic solvent on the removal of the proteins was investigated with respect to chemical affinity and concentration of the solvents. Under a suitable condition, nitrogen content of the deproteinized natural rubber (DPNR) was 0.000 wt%, which was less than that of natural rubber deproteinized with proteolytic enzyme or urea in the presence of surfactant. The removal of all proteins from natural rubber was proved through FT‐IR spectroscopy. Changes in morphology of the DPNR were also investigated by transmission electron microscopy. Copyright © 2011 John Wiley & Sons, Ltd.