Effect of Gamma Irradiation on the Migration of Di(2-Ethylhexyl) Phthalate from Plasticized Poly(Vinyl Chloride) into Air and PVC Resin

2014 ◽  
Vol 1015 ◽  
pp. 397-400
Author(s):  
Qin Wang ◽  
Wei Wu ◽  
Yan Fang Tang ◽  
Jian Jian Bian ◽  
Song Wei Zhu
Keyword(s):  
Weight Loss ◽  
Diffusion Coefficient ◽  
Gamma Radiation ◽  
Gamma Irradiation ◽  
Vinyl Chloride ◽  
Plasticized Pvc ◽  
Poly Vinyl Chloride ◽  
Ethylhexyl Phthalate

The risk of di (2-ethylhexyl) phthalate (DEHP) migration from plasticized poly (vinyl chloride) (PVC) is an important issue for patients.We present a study on the effect of gamma radiation on the migration of DEHP from plasticized PVC into air and PVC as a function of time (0-28day) at 75°C.The samples were irradiated at dose of 25 kGy using a 60Co gamma radiation source.The change of weight loss at 75°C was studied as a function of time.Diffusion coefficient of samples was calculated,it was found that the diffusion coefficient significant increased after irradiation,the sample having ESO exhibited an decrease trend of DEHP migration,which shown that ESO can effectively impress the migration of DEHP from plasticized PVC either in control or irradiate samples,the same Phenomenon was found in air and PVC.The diffusion coefficient was between 8.37×10-11 and 2.68×10-10 cm2/s in air, 8.87×10-8 and 9.99×10-8 cm2/s in PVC.

scholarly journals Potentiometric Sensors for Iodide and Bromide Based on Pt(II)-Porphyrin

Sensors ◽  
2018 ◽  
Vol 18 (7) ◽  
pp. 2297 ◽  
Author(s):  
Dana Vlascici ◽  
Nicoleta Plesu ◽  
Gheorghe Fagadar-Cosma ◽  
Anca Lascu ◽  
Mihaela Petric ◽  
...  
Keyword(s):  
Diffusion Coefficient ◽  
Water Absorption ◽  
Vinyl Chloride ◽  
Potentiometric Sensors ◽  
Iodide Ions ◽  
Response Characteristics ◽  
Potentiometric Response ◽  
Poly Vinyl Chloride

Pt(II) 5,10,15,20-tetra(4-methoxy-phenyl)-porphyrin (PtTMeOPP) was used in the construction of new ion-selective sensors. The potentiometric response characteristics (slope and selectivity) of iodide and bromide-selective electrodes based on (PtTMeOPP) metalloporphyrin in o-nitrophenyloctylether (NPOE), dioctylphtalate (DOP) and dioctylsebacate (DOS) plasticized poly(vinyl chloride) membranes are compared. The best results were obtained for the membranes plasticized with DOP and NPOE. The sensors have linear responses with near-Nernstian slopes toward bromide and iodide ions and good selectivity. The membrane plasticized with NPOE was electrochemically characterized using the EIS method to determine its water absorption and the diffusion coefficient into the membrane.

scholarly journals Tin Complexes Containing an Atenolol Moiety as Photostabilizers for Poly(Vinyl Chloride)

Polymers ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 2923
Author(s):  
Baneen Salam ◽  
Gamal A. El-Hiti ◽  
Muna Bufaroosha ◽  
Dina S. Ahmed ◽  
Ahmed Ahmed ◽  
...  
Keyword(s):  
Weight Loss ◽  
Infrared Spectroscopy ◽  
Surface Morphology ◽  
Vinyl Chloride ◽  
Poly Vinyl Chloride ◽  
Phenyl Rings ◽  
Tin Complexes ◽  
High Yields ◽  
Loss Determination ◽  
Surface Changes

The lifetime of poly(vinyl chloride) (PVC) can be increased through the addition of additives to provide protection against irradiation. Therefore, several new tin complexes containing atenolol moieties were synthesized and their photostabilizing effect on PVC was investigated. Reacting atenolol with a number of tin reagents in boiling methanol provided high yields of tin complexes. PVC was then mixed with the tin complexes at a low concentration, producing polymeric thins films. The films were irradiated with ultraviolet light and the resulting damage was assessed using different analytical and surface morphology techniques. Infrared spectroscopy and weight loss determination indicated that the films incorporating tin complexes incurred less damage and less surface changes compared to the blank film. In particular, the triphenyltin complex was very effective in enhancing the photostability of PVC, and this is due to its high aromaticity (three phenyl rings) compared to other complexes. Such an additive acts as a hydrogen chloride scavenger, radical absorber, and hydroperoxide decomposer.

Characterization and Constitutive Modeling of a Plasticized Poly(vinyl Chloride) for a Broad Range of Strain Rates

2001 ◽  
Vol 74 (4) ◽  
pp. 560-573 ◽  
Author(s):  
Yan Wang ◽  
Ellen M. Arruda ◽  
Phillip A. Przybylo
Keyword(s):  
Vinyl Chloride ◽  
Constitutive Modeling ◽  
Split Hopkinson Pressure Bar ◽  
Test System ◽  
Strain Rates ◽  
Impact Compression ◽  
Plasticized Pvc ◽  
Rate Dependent ◽  
Poly Vinyl Chloride ◽  
Compression Data

Abstract The mechanical behavior, morphological characterization and constitutive modeling of plasticized poly(vinyl chloride) (or PVC) are studied in this paper. The plasticized PVC is tested to large strains over a broad range of strain rates. Uniaxial and plane strain compression data at various constant strain rates ranging from −0.001 to −10 s−1 are collected on a conventional servohydraulic test system. Additional uniaxial impact compression data at approximately constant strain rates ranging from −1160 to −5560 s−1 are obtained using an aluminum split Hopkinson pressure bar apparatus. The large strain load/unload response of the plasticized PVC is nonlinear, it contains hysteresis and plastic deformation, and the initial response is highly rate dependent when the strain rate spans the transition zone between quasi-static and impact strain rates at room temperature. The morphology of plasticized PVC is analyzed via differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA), and described as a physically entangled network. A three-dimensional rate dependent constitutive model for plasticized PVC is developed and shown to successfully predict its stress—strain behavior over a broad range of strain rates.

scholarly journals Aqueous leaching of di-2-ethylhexyl phthalate and “green” plasticizers from poly(vinyl chloride)

2012 ◽  
Vol 432 ◽  
pp. 357-364 ◽  
Author(s):  
Joshua Kastner ◽  
David G. Cooper ◽  
Milan Marić ◽  
Patrick Dodd ◽  
Viviane Yargeau
Keyword(s):  
Vinyl Chloride ◽  
Poly Vinyl Chloride ◽  
Ethylhexyl Phthalate

scholarly journals A study of the influence of ultraviolet radiation on di(2-ethylhexyl) phthalate leaching from poly(vinyl chloride) medical devices

2018 ◽  
Vol 83 (10) ◽  
pp. 1157-1165
Author(s):  
Ivana Kostic ◽  
Tatjana Andjelkovic ◽  
Darko Andjelkovic ◽  
Tatjana Cvetkovic ◽  
Dusica Pavlovic
Keyword(s):  
Peritoneal Dialysis ◽  
Vinyl Chloride ◽  
Uv Radiation ◽  
Medical Devices ◽  
Total Content ◽  
Gas Chromatography Mass Spectrometry ◽  
Medical Procedures ◽  
Poly Vinyl Chloride ◽  
Blood Bag ◽  
Ethylhexyl Phthalate

The influence of ultraviolet (UV) radiation on the leaching of di(2- -ethylhexyl) phthalate (DEHP) from 8 different parts of plastic medical devices made of poly(vinyl chloride) (PVC) that are used in two important medical procedures (peritoneal dialysis and transfusion) was investigated. The investigation was performed for three different extraction times (6, 15 and 30 days). DEHP determination was realized by gas chromatography?mass spectrometry (GC-EI? ?MS). All the investigated samples contained a significant amount of DEHP. The results showed that some of the set for peritoneal dialysis contained DEHP in higher amounts than samples from the transfusion set. All samples of tubing material showed higher concentration levels of DEHP than the coupled bags. Results obtained after UV treatment showed that UV radiation has a certain influence on DEHP leaching from samples of PVC medical devices. The smallest difference was in the case of the quadruple blood bag from the transfusion set (about 73 % remained), while the biggest difference was obtained for the SAG-M transfer bag, also from the transfusion set, where just 25 % of total content of DEHP remained. The results obtained for DEHP leaching from investigated samples by time showed that most of the samples showed significant differences in the amounts of DEHP leached after 6 and 30 days.

Recent advances in plasticized PVC gels for soft actuators and devices: a review

2019 ◽  
Vol 7 (42) ◽  
pp. 12991-13009 ◽  
Author(s):  
Yi Li ◽  
Mingfei Guo ◽  
Yanbiao Li
Keyword(s):  
Vinyl Chloride ◽  
Electric Stimulation ◽  
Electroactive Polymers ◽  
Plasticized Pvc ◽  
Poly Vinyl Chloride ◽  
Recent Advances ◽  
Soft Actuators

Plasticized poly(vinyl chloride) (PVC) gels belong to a class of electroactive polymers (EAPs), which have the ability to realize bending motion, contractile motion, extended motion and crawling motion under electric stimulation.

A Model for the Oxygen Index of Plasticized Poly(Vinyl Chloride

1984 ◽  
Vol 2 (2) ◽  
pp. 123-141 ◽  
Author(s):  
E.D. Dickens
Keyword(s):  
Vinyl Chloride ◽  
Oxygen Index ◽  
Test Procedure ◽  
Weight Percent ◽  
Index Test ◽  
Simple Modification ◽  
Plasticized Pvc ◽  
Poly Vinyl Chloride ◽  
Using Data ◽  
Two Parameter

Experimental Oxygen Index data taken on plasticized poly(vinyl chloride) systems which consisted of just poly(vinyl chloride) resin, PVC, and plasticizer are shown to obey a simple two-parameter equation for plasticizer loadings above 15 weight percent. The empirical equation is further tested using data for similar plasticized PVC compounds based on large number of commercial plasticizers and plasticizer blends. One parameter used in the equation is the Oxygen Index of the pure plasticizer determined using a simple modification of the standard Oxygen Index test procedure. The other parameter is shown to have essentially the same value for all the plasticizers tested. A detailed deriva tion of the empirical model is provided using published flame spread models adapted for the Oxygen Index test. Predictions of the Oxygen Index for the two-component (ideal) plasticized PVC compounds are within 2-3% of the ex perimentally measured values.

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