leaching of plasticizers from and surface characterization

leaching of plasticizers from and surface characterization of

Leaching of plasticizers from and surface characterization of

The leaching of phthalate plasticizers from four types of blood platelet bags was investigated. The anticoagulant solutions used in the blood collection bags had pH values of 5.64 +/- .04 and contained no detectable amounts of phthalates.

Contact Suppliers
leaching of plasticizers from and surface characterization of

Leaching of Plasticizers from and Surface Characterization of

(1991). Leaching of Plasticizers from and Surface Characterization of PVC Blood Platelet Bags. Biomaterials, Artificial Cells and Immobilization Biotechnology: Vol. 19, No. 4, pp. 761-783.

Contact Suppliers
leaching of plasticizers from and surface characterization of

Leaching of plasticizers from and surface characterization of

Leaching of plasticizers from and surface characterization of PVC blood platelet bags. by A S Chawla, I Hinberg. Biomaterials, artificial cells, and immobilization biotechnology : official journal of the International Society for Artificial Cells and Immobilization Biotechnology.

Contact Suppliers
leaching of plasticizers from and surface characterization of

Leaching of plasticizers from and surface characterization of

The leaching of phthalate plasticizers from four types of blood platelet bags was investigated. The anticoagulant solutions used in the blood collection bags had pH values of 5.64 +/- .04 and contained no detectable amounts of phthalates. Platelet bag materials from each bag were soaked in normal salines for up to 5 days.

Contact Suppliers
leaching of plasticizers from and surface characterization of

Leaching of plasticizers from and surface characterization of

Leaching of plasticizers from and surface characterization of PVC blood platelet bags. A S Chawla Bureau of Radiation and Medical Devices, Health and Welfare Canada, Ottawa, Ontario.

Contact Suppliers
prevention of plasticizer leaching from pvc medical devices

Prevention of plasticizer leaching from PVC medical devices

Plasticizer leaching testsIn the literature, several factors are discussed that influence the rate of extraction of a plasticizer in the presence of a particular medium. At constant temperature, the surface area of the test specimen and the diffusion rate of the plasticizer through PVC control the plasticizer's extraction rate.

Contact Suppliers
current practices in corrosion, surface characterization, and

Current practices in corrosion, surface characterization, and

face characterization, and nickel leaching. The following topics were discussed: (1) methods used for corrosion assessments, surface characterization techniques, and nickel leach testing of metallic cardiovascular implant devices, (2) the limitations of each of these in vitro tests in predicting in vivo performance, (3)

Contact Suppliers
surface characterization of eurobiomat reference polymers

Surface Characterization of EUROBIOMAT Reference Polymers

The surface of the PEU tubing was completely covered by ethylene bis-stearamide, an extrusion lubricant. Ethylene bis-stearamide also was present on the PEU film surface, but some signals from the underlying PEU were detected by XPS. The dominate species present at the surface of the PVC tubing samples were plasticizers and ethylene bis-stearamide.

Contact Suppliers
prevention of plasticizer leaching from the inner surface of

Prevention of Plasticizer Leaching From the Inner Surface of

The inner surface of PVC tubes with a 4-mm inner diameter was treated by Ar plasma. The amount of plasticizer leached from the inner surface of the PVC tubes was measured by using a novel extraction device. The effects of the treatment time, working pressure, and applied voltage on the leaching of the plasticizer were investigated.

Contact Suppliers
current practices in corrosion, surface characterization, and

Current practices in corrosion, surface characterization, and

face characterization, and nickel leaching. The following topics were discussed: (1) methods used for corrosion assessments, surface characterization techniques, and nickel leach testing of metallic cardiovascular implant devices, (2) the limitations of each of these in vitro tests in predicting in vivo performance, (3)

Contact Suppliers
dibutyl phthalate release from polyvinyl chloride

Dibutyl phthalate release from polyvinyl chloride

Leaching of surface-active DOC from plastics could promote the release of phthalate plasticizer. Abstract In recent years, great efforts have been made to understand the capacity of microplastics to adsorb environmental pollutants; however, relatively little is known about the ability of microplastics to release inherent additives into

Contact Suppliers
determining extractables and leachables in polymeric

Determining Extractables and Leachables in Polymeric

The volume of extraction solvent utilized can be determined using either the surface area of the component being extracted or on a mass basis. Generally, the surface area approach is preferred and a surface area to volume ratio of 3 cm2/ml is applied for most samples. Higher volumes may be

Contact Suppliers
current practices in corrosion, surface characterization, and

Current practices in corrosion, surface characterization, and

The following topics were discussed: (1) methods used for corrosion assessments, surface characterization techniques, and nickel leach testing of metallic cardiovascular implant devices, (2) the limitations of each of these in vitro tests in predicting in vivo performance, (3) the need, utility, and circumstances when each test should be

Contact Suppliers
surface characterization of eurobiomat reference polymers

Surface Characterization of EUROBIOMAT Reference Polymers

The surface of the PEU tubing was completely covered by ethylene bis-stearamide, an extrusion lubricant. Ethylene bis-stearamide also was present on the PEU film surface, but some signals from the underlying PEU were detected by XPS. The dominate species present at the surface of the PVC tubing samples were plasticizers and ethylene bis-stearamide.

Contact Suppliers
plasticizer presentation final - slideshare

Plasticizer Presentation Final - SlideShare

Limitations 49 (A) LEACHING EFFECT- The major trouble encountered during the plasticizing of polymers is the leaching of the plasticizer from the film. This leaching effect of Plasticizer is dependent on the type and concentration of dissolution medium. This eventually results in drastic alteration of drug release patterns from coated dosage

Contact Suppliers
impact of alternative materials to plasticized pvc infusion

Impact of alternative materials to plasticized PVC infusion

A characterization of each material’s surface was performed by Fourier transform infrared spectroscopy in attenuated total reflection mode (ATR-FTIR) and by measurement of surface zeta potential.

Contact Suppliers
hepatic effects of a phthalate ester plasticizer leached from

Hepatic effects of a phthalate ester plasticizer leached from

Chawla A and Hinberg I (2009) Leaching of Plasticizers from and Surface Characterization of PVC Blood Platelet Bags, Biomaterials, Artificial Cells and Immobilization Biotechnology, 10.3109/10731199109117853, 19:4, (761-783), Online publication date: 1-Jan-1991.

Contact Suppliers
(pdf) prevention of plasticizer leaching from pvc medical

(PDF) Prevention of plasticizer leaching from PVC medical

The efficiency at which a given test medium silica weight content ranging from 25 to 33%. can remove plasticizer from the surface of a test specimen It is also interesting to note that, according to the XPS represents the first level of control on the rate of plasticizer results reported in Table 2, the very surface composition of extraction or

Contact Suppliers
esca surface characterization of four iupac reference polymers.

ESCA surface characterization of four IUPAC reference polymers.

The surface of the PVC sample showed a high surface concentration of hydrocarbon-rich plasticizer. Also, Si, O and Zn were detected. Cellulose coil specimens were heavily silicone contaminated. A 24 h rinse of this material in water reduced the Si level to 5%, and produced a surface spectrum closer to that expected for cellulose. PMID: 8435459

Contact Suppliers
determining extractables and leachables in polymeric

Determining Extractables and Leachables in Polymeric

The volume of extraction solvent utilized can be determined using either the surface area of the component being extracted or on a mass basis. Generally, the surface area approach is preferred and a surface area to volume ratio of 3 cm2/ml is applied for most samples. Higher volumes may be

Contact Suppliers
migration of chemical compounds from packaging polymers

Migration of Chemical Compounds from Packaging Polymers

The migration process can be divided into 4 major steps: diffusion of chemical compounds through the polymers, desorption of the diffused molecules from the polymer surface, sorption of the compounds at the plastic–food interface, and desorption of the compounds in the food (Ferrara and others 2001).

Contact Suppliers
(pdf) the surface chemistry characterization of pyrite

(PDF) The Surface Chemistry Characterization of Pyrite

The mineral surface chemistry characterization is essential to describe the dissolution kinetics in leaching and bioleaching. Five different methods, including X-ray diffraction (XRD), Scanning

Contact Suppliers
characterization, surface area, and porosity analyses of the

Characterization, Surface Area, and Porosity Analyses of the

This is the first time that the high surface area saponitic material from Yunclillos deposit (Toledo province) is described. The acid treatment of this material with diluted solutions of HCl (0.62 and 1.25% by weight) at 25 °C for 2, 6, 24, and 48 h has been carried out.

Contact Suppliers
thermo-mechanical characterization and antimicrobial

Thermo-mechanical characterization and antimicrobial

However, blending of active agents in polymers may alter mechanical, thermal, optical, and barrier characters of the packaging materials [7, 12]. Consequently, it is crucial for the antimicrobial components to be immobilized covalently onto the surface. One of the methods employed to modify the PLA surface covalently is wet chemistry.

Contact Suppliers