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

Paper ID Volume ID Publish Year Pages File Format Full-Text
13598 882 2002 8 PDF Available
Title
Synthesis, surface properties and performance of thiosulphate-substituted plasticized poly(vinyl chloride)
Abstract

Plasticized 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.

Keywords
Poly(vinyl chloride); Plasticizer migration; Di-(2-ethylhexyl) phthalate; Thiosulphate; Surface modification
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Synthesis, surface properties and performance of thiosulphate-substituted plasticized poly(vinyl chloride)
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biomaterials - Volume 23, Issue 24, December 2002, Pages 4855–4862
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us