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Removal of proteins from natural rubber with urea and its application to continuous processes
Author(s) -
Yamamoto Yoshimasa,
Nghia Phan Trung,
Klinklai Warunee,
Saito Takayuki,
Kawahara Seiichi
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.27236
Subject(s) - natural rubber , urea , incubation , centrifugation , chemistry , sodium dodecyl sulfate , chromatography , nitrogen , centrifuge , chemical engineering , materials science , biochemistry , organic chemistry , physics , nuclear physics , engineering
The removal of proteins from natural rubber through a batch process was studied by the incubation of the rubber latex with urea in the presence of sodium dodecyl sulfate. Under suitable conditions, the total nitrogen content of deproteinized natural rubber (DPNR) decreased from 0.38 to 0.02 wt % after incubation for 10 min; this was similar to that of the rubber deproteinized with a proteolytic enzyme for 12 h. For applications, continuous incubation and centrifugation were individually investigated by the use of a semicircular channel and a continuous centrifuge, respectively, to scale up DPNR preparation. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2008