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The Influence of Electron-beam Irradiation on the Chemical and the Structural Properties of Medical-grade Polyurethane

Title
The Influence of Electron-beam Irradiation on the Chemical and the Structural Properties of Medical-grade Polyurethane
Authors
Shin, SukyoungLee, Soonhyouk
Ewha Authors
이순혁신석영
SCOPUS Author ID
이순혁scopus; 신석영scopus
Issue Date
2015
Journal Title
JOURNAL OF THE KOREAN PHYSICAL SOCIETY
ISSN
0374-4884JCR Link1976-8524JCR Link
Citation
vol. 67, no. 1, pp. 71 - 75
Keywords
Medical polymerElectron-beam irradiationThermo plastic polyurethane
Publisher
KOREAN PHYSICAL SOC
Indexed
SCI; SCIE; SCOPUS; KCI WOS scopus
Abstract
Thermo plastic polyurethane (TPU) provides excellent bio-compatibility, flexibility and good irradiation resistance; however, extremely high irradiation doses can alter the structure and the function of macromolecules, resulting in oxidation, chain scission and cross-linking. In this study, the effects of e-beam irradiation on the medical-grade thermo plastic polyurethane were studied. Changes in the chain length and their distribution, as well as changes in the molecular structure were studied. The GPC (gel permeation chromatography) results show that the oxidative decomposition is followed by a decrease in the molecular mass and an increase in polydispersity. This indicates a very inhomogeneous degradation, which is a consequence of the specific course and of the intensity of oxidative degradation. This was confirmed by means of mechanical property measurements. Overall, this study demonstrated that medical-grade TPU was affected by radiation exposure, particularly at high irradiation doses.
DOI
10.3938/jkps.67.71
Appears in Collections:
연구기관 > 의과학연구소 > Journal papers
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