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