Removal of proteins from natural rubber with urea and its application to continuous processes |
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| Authors: | Yoshimasa Yamamoto Phan Trung Nghia Warunee Klinklai Takayuki Saito Seiichi Kawahara |
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| Affiliation: | 1. Department of Materials Science and Technology, Faculty of Engineering, Nagaoka University of Technology, Nagaoka, Niigata 940‐2188, Japan;2. Department of Materials and Metallurgical Engineering, Faculty of Engineering, Rajamangala University of Technology, Thanyaburi, Pathumthani 12110, Thailand |
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| Abstract: | 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 |
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| Keywords: | proteins rubber |
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