Deproteinized natural rubber prepared with urea and sodium hydroxide

Name: Supat Moolsin

Organization : Rangsit University. Faculty of Science

Email : supat.m@rsu.ac.th

Name: Nicharee Dechruksa

Organization : Rangsit University. Faculty of Science

keyword: Deproteinization

LCSH: Rubber -- Reinforcement

LCSH: Sodium hydroxide

LCSH: Urea

Abstract: Preparation of deproteinized natural rubber (DPNR) was made from preserved high ammonia natural rubber (HANR) latex using sodium dodecyl sulfate (SDS), urea, and sodium hydroxide through a batch process. The effects of chemicals concentration, incubation temperature and time on nitrogen and protein contents were investigated. The centrifugation in the presence of SDS as a surfactant could remove the allergenic proteins from the latex. Under suitable conditions in the addition of urea, the total nitrogen and protein contents of DPNR determined by the Kjeldahl method decreased to 0.0225 wt% and 0.14 wt%, respectively, using only 0.1 phr of urea. To remove further the proteins, the DPNR was made by incubation of the latex with sodium hydroxide and urea in the presence of the surfactant. The protein content of the rubber was reduced to 0.11 wt% from 0.42 wt%, compared to that of HANR. Fourier transform infrared (FT-IR) spectroscopy was used to confirm the reduction of proteins or peptides in the HANR latex

King Mongkut's University of Technology North Bangkok. Central Library

Address: BANGKOK

Email: library@kmutnb.ac.th

Created: 2016

Modified: 2023-01-05

Issued: 2023-01-05

BibliograpyCitation : In Chemical Society of Thailand under the Patronage of Professor Dr. HRH Princess Chulabhorn and Chulalongkorn University Faculty of science. Pure and Applied Chemistry International Conference (PACCON 2016) (pp.1165-1170). Bangkok : Chemical Society of Thailand under the Patronage of Professor Dr. HRH Princess Chulabhorn

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