Please use this identifier to cite or link to this item:
Title: Crosslinking density of silk fibroin - Rice starch hydrogels modified with trisodium trimetaphosphate
Authors: Anucha Racksanti
Sorapong Janhom
Sittiporn Punyanitya
Ruangsri Watanesk
Surasak Watanesk
Keywords: Engineering
Issue Date: 1-Jan-2014
Abstract: Silk fibroin (SF) and rice starch (RS) are both biopolymers being non-toxic, biocompatible and biodegradable which can be utilized as hydrogels. The aim of this study was to prepare the SF-RS hydrogels modified with trisodium trimetaphosphate (STMP) and determine its crosslinking density for providing a guideline for preparing better quality absorbable hydrogels. The SF-RS hydrogels modified with various percentages of STMP were prepared by solution casting at pH 12 then neutralized to pH 7. The functional groups and molecular linkages of the hydrogels were investigated by Fourier transform infrared spectrometry (FTIR) and proton nuclear magnetic resonance (1H NMR) spectrometry, respectively. Finally, the crosslinking density of the hydrogels was determined by UV/Vis spectrophotometry via the measurement of the relative amount of methylene blue (RMB) bound to the hydrogels. Results from the FTIR and 1H NMR spectra revealed that linkages within the hydrogels occurred mainly between the O-H groups of RS and the triphosphate groups of STMP. From the MB adsorption study, the crosslinking density of the SF-RS hydrogel with 1.0%w/w STMP at the 60 min saturation time was approximately 63%. © (2014) Trans Tech Publications, Switzerland.
ISSN: 16627482
Appears in Collections:CMUL: Journal Articles

Files in This Item:
There are no files associated with this item.

Items in CMUIR are protected by copyright, with all rights reserved, unless otherwise indicated.