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Thursday, May 7, 2020 | History

2 edition of Effects of the thermal sterilization procedure on polymeric products found in the catalog.

Effects of the thermal sterilization procedure on polymeric products

S. H. Kalfayan

Effects of the thermal sterilization procedure on polymeric products

by S. H. Kalfayan

  • 305 Want to read
  • 9 Currently reading

Published by Jet Propulsion Laboratory, California Institute of Technology in Pasadena .
Written in English

    Subjects:
  • Space vehicles -- Sterilization.,
  • Polymers.

  • Edition Notes

    Statement[by] S. H. Kalfayan [and] B. A. Campbell.
    SeriesJPL technical report no. 32-973
    ContributionsCampbell, B. A., joint author.
    Classifications
    LC ClassificationsTL945 .K28
    The Physical Object
    Paginationvi, 119 p.
    Number of Pages119
    ID Numbers
    Open LibraryOL5599480M
    LC Control Number68005607

    used for procedures lasting longer than one working day. Exposure to ionizing radiation Sterilization of certain active ingredients, drug products, and medical devices in their final container or package may be achieved by exposure to ionizing radiation in the form of gamma radiation from a suitable radioisotopic source such as 60Co (cobalt 60) orFile Size: 85KB. STERILIZATION EFFECTS ON POLYPROPYLENE: TECHNOLOGY AND POLYMER TYPE EFFECTS Markus Gahleitner, Johannes Wolfschwenger and Joachim Fiebig Borealis GmbH, St. Peterstr. 25, A Linz, Austria Karl Dobianer and Christa Hametner OFI – Institute for Medical Products, Franz-Grillstr. 5, A Vienna, Austria Abstract.

    The easiest FDA approved sterilization procedure is autoclave sterilization because it is quick and effective. However, for easily degradable and non cross-linked polymeric materials it can destroy the scaffold geometry or detrimentally affect the material properties and ultimate device by: S. H. Kalfayan has written: 'Effects of the thermal sterilization procedure on polymeric products' -- subject(s): Polymers, Space vehicles, Sterilization Asked in Sanitization and Germs.

    continuous sterilization procedure. • Although continuous sterilization is the logical preliminary step for continuous fermentations in industrial scale, it is also of value in batch fer-mentations, making greater yields. possible for the time and space allotted. • The reason for this is because of the exponential.   Sterilization by ionizing radiation, primarily by cobalt 60 gamma rays or electron accelerators, is a low-temperature sterilization method that has been used for a number of medical products (e.g., tissue for transplantation, pharmaceuticals, medical devices).


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Effects of the thermal sterilization procedure on polymeric products by S. H. Kalfayan Download PDF EPUB FB2

1. Thermal sterilization of medical components made of polymers results in irreversible thermal oxidation as a result of the combined action of the high temperatures and the sterilization medium; this can lead to deterioration in the functionally important physicomechanical characteristics.

The deterioration is influenced considerably by the chemical nature of the polymer and that of the Author: P. Sherstnev, N. Shneps-Shneppe, L.

Rudnitskaya, M. Likhobabenko. Effects of gamma sterilization on the physicomechanical and thermal properties of gelatin‐based novel hydrogels Kamol Dey Department of Mechanical and Industrial Engineering, Materials Science and Technology Laboratory, University of Brescia, via Bra Brescia, ItalyAuthor: Kamol Dey, Silvia Agnelli, Luciana Sartore.

This is the only book that deals with different sterilization methods on various polymer materials. Lots of graphs and charts so that one can get the information needed very quickly.

An excellent resource to 4/5(1). Properties of samples are tested, after thermal exposure, and values are compared with unexposed samples.

Thermal stability or compatibility ratings of formulated or compounded organic polymers using trade names are made and degree of change in measured properties is assessed. Products are rated compatible, marginal, or not compatible. The data tables in this book enable engineers and scientists to select the right materials, and right sterilization method for a given product or application.

The third edition includes new text chapters that provide the underpinning knowledge required to make best use of the data. This article studies the effect of different sterilization techniques on structure, thermal and time-dependent mechanical properties of polyamide 6 materials.

The effects of sterilization methods on plastics and elastomers: the definitive user's guide and databook Liesl K. Massey This extensively updated second edition was created for medical device, medical packaging, and food packaging design engineers, material product technical support, and research/development personnel.

Kanjickal et al. studied the effects of sterilization on poly (ethylene glycol) hydrogels and reported that ethylene oxide and gamma sterilization caused elevated crosslinking in the polymer, thus. Effects of heat (dry-heat and steam) sterilization on polymers. Heat sterilization, weather by dry heat or by steam, can cause thermal degradation of polymers and this may be due to the oxidation mechanism.

Thermal degradation of polymers is typically a molecular deterioration as a. The effect of terminal sterilisation techniques on medical polymers is diverse. Few sterilisation agents are without adverse effects on polymers: heat (steam and dry heat), radiation, ethylene oxide, ozone, hydrogen peroxide.

Heat can alter, damage, degrade, distort and expand heat-sensitive polymers. Ethylene oxide is toxic and can leave toxic by: 6. The Effect of Sterilization Methods on Plastics and Elastomers, Fourth Edition brings together a wide range of essential data on the sterilization of plastics and elastomers, thus enabling engineers to make optimal material choices and design decisions.

The data tables in this book enable engineers and scientists to select the right materials and sterilization method for a given product or. NATIONAL AERONAUTICS AND SPACE ADMINISTRATION Technical Report No. 9 73 Effects of the Thermal Sterilization Procedure on Polymeric Products S.

Kalfayan 6. Campbell Approved by: R. Landel, Manager Polymer Research Section JET PROPULSION LABORATORY CALIFORNIA INSTITUTE OF TECHNOLOGY PA SAD EN A, CALI F o R N I A Novem Effects of Ethylene Oxide—Freon 12 Decontamination and Dry Heat Sterilization Procedures on Polymeric Products I.

Introduction The effects of sterilization environments on polymeric products are under study. In a previous JPL report (Ref. 1) the effects of dry heat sterilization at °C on different commercial products were discussed. effects of sterilization on unwelded test specimens [10, 12, 13].

The purpose of this paper is to show the effects that the sterilization with gamma radiation, ethylene oxide and superheated steam have on welded test specimens and thereby evaluate the risk for patient safety that those sterilization procedures may constitute on the Size: KB.

Commercial radiation sterilization has now been used for more than 50 years. During this period, the market for disposable medical products has undergone enormous growth, and with it the use of ionizing radiation as a method of sterilization. Currently, 40–50% of disposable medical products.

This reference guide brings together a wide range of essential data on the sterilization of plastics and elastomers, enabling engineers to make optimal material choices and design decisions. The data tables in this book enable engineers and scientists to select the right materials, and right sterilization method for a given product or application.

This extensively updated second edition was created for medical device, medical packaging, and food packaging design engineers, material product technical support, and research/development personnel. This comprehensive databook contains important characteristics and properties data on the effects of sterilization methods on plastics and elastomers.

However, heat processing also has a detrimental effect on nutrients since thermal degradation of nutrients can and does occur. Therefore, thermal processing makes it possible to extend and increase availability of a foodstuff to the consumer, but the foodstuff may have a lower nutrient content (compared to the fresh foodstuff).Cited by:   The effect of sterilization was ambiguous; mostly it led to an increase of viscosity, but there were starches with decreased viscosity after thermal treatment.

Sensitivity of hydrogels toward the presence of inorganic ions is also significant. Similarly as for sterilization, the impact of the present ions depends on the type of by: 3.

Non-Thermal Sterilization Technologies kill rates equivalent to conventional thermal sterilization, but at room temperature. Additionally, technologies that can handle multi-phase products (liquid and solids) are of significant interest for applications across the File Size: KB.

Sterilization is a fundamental step in the reuse of endodontic instruments. The sterilization procedure involves disinfection, cleaning, washing, drying, packaging, and sterilization by heat.

Heat sterilization can lead to changes in the physical and mechanical properties of dental instruments. These changes can affect the external surfaces via micropitting, corrosion, a reduction in cutting Cited by: 1.The sterilization processes of nanoparticles (NP) by autoclaving and filtration are two of the most utilized methods in the pharmaceutical industry but are not always a viable option.

For this reason, the search for alternative options such as UV and gamma radiation is of interest. In this work, we evaluated both types of sterilization on two types of NP in solid state widely employed in the. Radiation sterilization, a γ-sterilization, is perhaps the most popular procedure for the terminal sterilization of bioabsorbable polymer-based medical devices that can occur at low temperature.

Radiation sterilization utilizes ionizing radiation from a cobalt (60 Co) isotope source or machine-generated accelerated : Moran Haim Zada, Awanish Kumar, Omar Elmalak, Guy Mechrez, Abraham J.

Domb.