The results of our studies on the extraction and disposition of three plasticizing substances which are extracted from poly(vinyl chloride) medical devices will be reported. The plasticizers are di-2-ethylhexyl phthalate (DEHP), di-2-ethylhexyl adipate (DEHA), and butylglycolyl butyl phthalate (BGBP). DEHP extraction will be described in greater detail, and the two other plasticizers, DEHA and ...

BACKGROUND There have been few investigations of an association between poly(vinyl chloride) (PVC) dust exposure and an increase in lung cancer incidence, and their conclusions have been inconsistent. AIMS To determine whether PVC and/or vinyl chloride monomer (VCM) is the associated risk factor(s), by means of a nested case-referent study, in order to estimate lung cancer risk, avoiding sele...

An advanced SiO2–lignin hybrid material was obtained and tested as a novel poly(vinyl chloride) (PVC) filler. The processing of compounds of poly(vinyl chloride) in the form of a dry blend with silica–lignin hybrid material and, separately, with the two components from which that material was prepared, was performed in a Brabender mixing chamber. An analysis was made of processing (mass melt fl...

This review presents a strategy for management of poly vinyl chloride (PVC) waste by chemical modification as a viable method. PVC contains chlorine as a source to attack by nucleophiles (Nu-) and resultant product can be used for various applications due to its conductivity, antibacterial and ion exchange properties. Prominently used Nuare I-, SCN-, OH-, N3 -, phthalimide anion and concentrate...

Despite all the technical and economic problems and the public discussions on the environmental dangers and hazards of chlorine chemistry, poly(vinyl chloride) (PVC) is the second most produced plastic (with a worldwide capacity of about 31 million tons), placing after polyolefins and before styrene polymers. Presently, PVC production worldwide is growing at a rate of more than 4% per year. The...

Carbon-13 NMR analysis after chemical reduction has established the following facts with regard to the structures and formation mechanisms of some chlorine-containing polymers that are prepared by free-radical routes. Poly(vinyl chloride) (PVC) contains chloromethyl, 2-chioroethyl, and 2,4-dichloro-n -butyl branches, as well as long branch structures. Tertiary halogen is present at all of the b...

Palladium nanoparticles supported over poly(vinyl)chloride matrix (PVC-Pd(0)) are prepared through an efficient and inexpensive protocol. The catalyst has been characterized by XRD, SEM and TEM and its utility for the reduction of a range of functional groups as well as for the removal of some common protecting groups employed in peptide chemistry is demonstrated.

In water distribution systems containing PVC pipe manufactured in the ‘‘early era’’ ~prior to 1977!, vinyl chloride can leach into drinking water resulting in vinyl chloride concentrations exceeding the 2 mg•L maximum contaminant level. Field testing of dead-end segments of water distribution systems consisting of early-era PVC pipe was conducted to examine their initial intrapipe vinyl chlorid...

A new suitable material was synthesized using click reaction between dialkynyl-p-tert-butylcalix[4]arene and poly(vinyl chloride) azide (PVC-N3). This novel with triazole groups grafted onto PVC polymer (PVC-0.75CX[4]) has an excellent extraction capability for chromium ions from aqueous solutions. It shows a unique ability to extract (VI) solutions, thanks the soft cavity, presence of π-triazo...

Poly(vinyl chloride) resins are produced by four basic processes: suspension, emulsion, bulk and solution polymerization. PVC suspensions resins are usually relatively dust-free and granular with varying degrees of particle porosity. PVC emulsion resins are small particle powders containing very little free monomer. Bulk PVC resins are similar to suspension PVC resins, though the particles tend...