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IRRADIATION OF POLYMERS

In our study we have found that UV-light greatly accelerates the rate of ozone attack at the polypropylene surface. Presented results were undertaken to determine mechanism of the photo-oxidation of polypropylene surface upon UV-irradiation of polymer films in ozone. [Pg.188]

TEMPERATURE RISE DURING IRRADIATION. The chemical reactions which result from irradiation of polymers consume only a small fraction of the absorbed energy, which is mainly dissipated in the form of heat. Thus, 0.1 MGy of energy absorbed in water will produce a temperature rise of 24 °C - and more in a polymer. [Pg.3]

SMALL MOLECULE PRODUCTS. The small molecule products from irradiation of polymers include hydrogen, alkanes and alkenes, CO and CO2, SO2, H2O and HC1 depending on the chemical composition of the polymer. They may be partly evolved and partly trapped in the polymer according to their volatility, the sample dimensions and the temperature. [Pg.10]

Irradiation of polymers in atmospheres of other gases offer the possibility of a variety of chemical modifications of the... [Pg.10]

Early Events in High-Energy Irradiation of Polymers... [Pg.14]

The irradiation of polymers is widespread in many industries. For example, microlithography is an essential process in the fabrication of integrated circuits that involves the modification of the solubility or volatility of thin polymer resist films by radiation. The sterilization by radiation of medical and pharmaceutical items, many of which are manufactured from polymeric materials, is increasing. This trend arises from both the convenience of the process and the concern about the toxicity of chemical sterilants. Information about the radiolysis products of natural and synthetic polymers used in the medical industry is required for the evaluation of the safety of the process. [Pg.277]

Clough, R.L. Shalaby, S.W. In Irradiation of Polymers ACS Symposium Series 620. American Chemical Society Washington, DC, 1996. [Pg.576]

See other pages where IRRADIATION OF POLYMERS is mentioned: [Pg.869]    [Pg.153]    [Pg.199]    [Pg.356]    [Pg.216]    [Pg.9]    [Pg.15]    [Pg.17]    [Pg.19]    [Pg.21]    [Pg.23]    [Pg.25]    [Pg.277]    [Pg.20]    [Pg.21]    [Pg.1]    [Pg.1]    [Pg.3]    [Pg.4]    [Pg.5]    [Pg.6]    [Pg.7]    [Pg.8]    [Pg.9]    [Pg.10]    [Pg.11]    [Pg.12]    [Pg.12]    [Pg.13]    [Pg.14]    [Pg.14]    [Pg.15]    [Pg.16]    [Pg.16]    [Pg.17]    [Pg.18]    [Pg.18]    [Pg.19]    [Pg.20]    [Pg.20]    [Pg.21]   


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Polymer irradiation

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