Results 11 to 20 of about 123,169 (299)

Photostability Study of Some Modified Poly(vinyl chloride) Containing Pendant Schiff’s Bases

open access: yesمجلة بغداد للعلوم, 2016
The polymers modified Poly(vinyl chloride) differ in their tendency to photo oxidation comparing with that unmodified. It has been studied Photostability for modified Poly(vinyl chloride) chains using Schiff’s bases derivative of (5-amino-1, 3, 4 ...
Baghdad Science Journal
doaj   +1 more source

The tensile properties of electrospun Poly Vinyl Chloride and Cellulose Acetate (PVC/CA) bi-component polymers nanofibers

open access: yesAlexandria Engineering Journal, 2019
Cellulose Acetate and Poly (Vinyl Chloride) nanofibers have found diverse usages in several different domains. The nanofiber mat has proven to be an efficient media for the ultra-filtration when applied on the surface of other woven or nonwoven filters ...
Magdi ElMessiry, Nermin Fadel
doaj   +1 more source

Worker Exposure to Vinyl Chloride and Poly(Vinyl Chloride) [PDF]

open access: yesEnvironmental Health Perspectives, 1981
The National Institute for Occupational Safety and Health (NIOSH) in early 1974 began industrial hygiene studies of vinyl chloride exposed workers. Three VC monomer plants, three VC polymerization plants, and seven PVC fabrication plants were surveyed.
openaire   +2 more sources

Modelling and Simulation of a Batch Poly(Vinyl Chloride) Reactor

open access: yesChemical Engineering Transactions, 2013
A population balance model for batch suspension polymerization of vinyl chloride is presented. Break up into two equal volumes of droplets, binary aggregation and random mass exchanges between the colliding droplets are assumed, while the kinetic data of
A. Barkanyi, S. Nemeth, B.G. Lakatos
doaj   +1 more source

The Role of the Gouy Phase in the Coherent Phase Control of the Photoionization and Photodissociation of Vinyl Chloride [PDF]

open access: yes, 2006
We demonstrate theoretically and experimentally that the Gouy phase of a focused laser beam may be used to control the photo-induced reactions of a polyatomic molecule.
A. Yariv   +11 more
core   +2 more sources

Heavy metal free thermal stabilizing-flame retarding modifier for plasticized poly(vinyl chloride)

open access: yesMaterials Research Express, 2020
Our research aimed to find a new material that can be an efficient heavy metal free flame retardant for plasticized poly(vinyl chloride) comparable to the conventional flame retardants.
Ali I Al-Mosawi, Kálmán Marossy
doaj   +1 more source

Well-defined side-chain liquid-crystalline polysiloxanes [PDF]

open access: yes, 1996
A route to well-defined side-chain liquid-crystalline polysiloxanes (ratio of weight-to number-average molar masses Mw/Mn < 1.2 is reported. Anionic ring-opening polymerization of pentamethylvinylcyclotrisiloxane yielded a poly(dimethylsiloxane-co ...
Hempenius, Mark A.   +2 more
core   +2 more sources

Fabrication of ordered honeycomb porous poly(vinyl chloride) thin film doped with a Schiff base and nickel(II) chloride

open access: yesHeliyon, 2018
A modified poly(vinyl chloride) honeycomb thin film containing a low concentration of a thiadiazole Schiff base and nickel(II) chloride was successfully fabricated using the casting process.
Hassan Hashim   +4 more
doaj   +1 more source

Poly(vinyl Chloride) Photostabilization in the Presence of Schiff Bases Containing a Thiadiazole Moiety

open access: yesMolecules, 2018
Five Schiff bases containing a thiadiazole moiety have been used as poly(vinyl chloride) photostabilizers at low concentrations. The efficiency of Schiff bases as photostabilizers was investigated using various techniques, for example, the changes in ...
Naser Shaalan   +6 more
doaj   +1 more source

Characteristics, sources and risk assessments of heavy metal pollution in soils of typical chlor-alkali residue storage sites in northeastern China.

open access: yesPLoS ONE, 2022
In this study, thirty-four soil samples from a typical chlor-alkali slag residue storage site near the city of Qiqihar in northeastern China were collected and their arsenic, cadmium, chromium, copper, mercury, nickel, lead and zinc concentrations were ...
Zhiyuan Wu   +3 more
doaj   +2 more sources

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