ESCR behavior of plastic materials in medical environments

Citation
C. Qin et al., ESCR behavior of plastic materials in medical environments, J REINF PL, 20(1), 2001, pp. 22-36
Citations number
10
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Material Science & Engineering
Journal title
JOURNAL OF REINFORCED PLASTICS AND COMPOSITES
ISSN journal
0731-6844 → ACNP
Volume
20
Issue
1
Year of publication
2001
Pages
22 - 36
Database
ISI
SICI code
0731-6844(2001)20:1<22:EBOPMI>2.0.ZU;2-H
Abstract
Besides other facets of product development, it is imperative for medical d evice manufacturers to take great efforts through proper evaluation and con sideration of material properties under practical conditions to prevent pro duct failure at the end-uses. The environmental stress crack (ESCR) induced by chemical agents plays a significant role on material performances. In t his contribution, in-depth studies have been carried out on different medic al plastic materials, such as polycarbonate, copolyesters, ABS, acrylics, r igid thermoplastic polyurethane and their blends. More attention will be fo cused on a copolyester material for its unique ESCR behavior. Variation of chemical agents (such as different types of hospital disinfection solutions ) have great impacts on physical and functional properties. Various plastic s shows distinct environmental stress cracking phenomena under different co nditions. Mechanisms of ESCR phenomenon under different environments have b een explored. Fibril reinforcement by cold crystallization and chain sessio n by hydrolysis of the copolyester may have contributed to its excellent ch emical resistance against a wide range of chemicals and its catastrophic fa ilure in acidic or basic environment. In addition, appropriate definition o f product failures is also critical in making materials decisions.