Please use this identifier to cite or link to this item: http://dspace.sctimst.ac.in/jspui/handle/123456789/961
Title: RADIATION GRAFTING OF HYDROPHILIC MONOMERS ON TO PLASTICIZED POLY(VINYL CHLORIDE) SHEETS .2. MIGRATION BEHAVIOR OF THE PLASTICIZER FROM N-VINYL PYRROLIDONE GRAFTED SHEETS
Authors: KRISHNAN, VK
JAYAKRISHNAN, A
FRANCIS, JD
Keywords: Biomaterials
Issue Date: 1991
Publisher: BIOMATERIALS
Citation: BIOMATERIALS. 12; 5; 489-492
Abstract: The grafting of N-vinyl pyrrolidone, a hydrophilic monomer, on to flexible poly(vinyl chloride) sheets used in medical applications using ionizing radiation from a 60Co source was studied. The graft yield was found to increase linearly with monomer concentration and also with increasing radiation doses. The migration of the plasticizer di-(2-ethylhexyl)phthalate into a strong organic extractant such as n-hexane was studied at different time intervals for different grafted systems of poly(vinyl chloride) at 30-degrees-C. The results indicated a drastic reduction in the leaching of the plasticizer from grafted systems versus ungrafted controls. Incorporation of ethylene dimethacrylate cross-linker during grafting did not seem to affect the graft yield considerably but appeared to further reduce the plasticizer migration. Surface energy calculations of the grafted samples indicate that the surfaces are highly hydrophilic compared to ungrafted poly(vinyl chloride) and the polar and dispersion components tend to vary with increasing cross-linker concentration.
URI: http://dx.doi.org/10.1016/0142-9612(91)90147-3
http://dspace.sctimst.ac.in/jspui/handle/123456789/961
Appears in Collections:Journal Articles

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


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