Synthesis, surface properties and performance of thiosulphate-substituted plasticized poly(vinyl chloride)

dc.contributorLakshmi, S
dc.contributorJayakrishnan, A
dc.date.accessioned2012-12-04T11:45:27Z
dc.date.available2012-12-04T11:45:27Z
dc.date.issued2002
dc.description.abstractPlasticized poly(vinyl chloride) (PVC) was surface modified by nucleophilic substitution of the chlorine atoms of PVC by thiosulphate in aqueous media in the presence of a phase-transfer catalyst. The properties of the modified surface were evaluated by contact angle measurements, attenuated total reflection Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy and scanning electron microscopy. Migration of the plasticizer di-(2-ethylhexyl) phthalate from control as well as modified PVC was examined in hexane, in cottonseed oil and in poly(ethylene glycol)-400 (PEG-400). While the modified PVC was found to be highly migration resistant in hexane, cottonseed oil and PEG-400 extracted the plasticizer. The modified PVC was found to cause haemolysis and was cytotoxic. A possible explanation for the difference in performance of the modified material in different extraction media and its toxicity is presented from a mechanistic view of the substitution process. (C) 2002 Elsevier Science Ltd. All rights reserved.
dc.identifier.citationBIOMATERIALS. 23; 24; 4855-4862en_US
dc.identifier.urihttp://dx.doi.org/10.1016/S0142-9612(02)00243-0
dc.identifier.urihttps://dspace.sctimst.ac.in/handle/123456789/1155
dc.publisherBIOMATERIALS
dc.subjectBiomaterials
dc.titleSynthesis, surface properties and performance of thiosulphate-substituted plasticized poly(vinyl chloride)
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