Material properties of a maxillofacial chlorinated polyethylene elastomer stored in simulated skin secretions

Eleni, PN; Krokida, MK; Polyzois, GL; Gettleman, L

dc.contributor.author	Eleni, PN	en
dc.contributor.author	Krokida, MK	en
dc.contributor.author	Polyzois, GL	en
dc.contributor.author	Gettleman, L	en
dc.date.accessioned	2014-03-01T01:31:02Z
dc.date.available	2014-03-01T01:31:02Z
dc.date.issued	2009	en
dc.identifier.issn	1552-4973	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/19722
dc.subject	Chlorinated polyethylene	en
dc.subject	Color changes	en
dc.subject	DSC	en
dc.subject	Mechanical properties	en
dc.subject	Skin secretions	en
dc.subject.classification	Engineering, Biomedical	en
dc.subject.classification	Materials Science, Biomaterials	en
dc.subject.other	Aqueous solutions	en
dc.subject.other	Chlorinated polyethylene	en
dc.subject.other	Color changes	en
dc.subject.other	Compression tests	en
dc.subject.other	Crosslinking reaction	en
dc.subject.other	Differential scanning calorimeters	en
dc.subject.other	DSC	en
dc.subject.other	Environmental factors	en
dc.subject.other	Facial prosthesis	en
dc.subject.other	Glass transition temperature	en
dc.subject.other	Hardness measurement	en
dc.subject.other	Immersion time	en
dc.subject.other	Material property	en
dc.subject.other	Measured properties	en
dc.subject.other	Service environment	en
dc.subject.other	Testing machine	en
dc.subject.other	Weight change	en
dc.subject.other	Weight loss	en
dc.subject.other	Body fluids	en
dc.subject.other	Color	en
dc.subject.other	Colorimetry	en
dc.subject.other	Compression testing	en
dc.subject.other	Differential scanning calorimetry	en
dc.subject.other	Electric network analysis	en
dc.subject.other	Glass transition	en
dc.subject.other	Mathematical models	en
dc.subject.other	Physical properties	en
dc.subject.other	Physiology	en
dc.subject.other	Polyethylenes	en
dc.subject.other	Prosthetics	en
dc.subject.other	Skin	en
dc.subject.other	Thermoplastics	en
dc.subject.other	Mechanical properties	en
dc.subject.other	elastomer	en
dc.subject.other	polyethylene	en
dc.subject.other	aging	en
dc.subject.other	analysis of variance	en
dc.subject.other	aqueous solution	en
dc.subject.other	article	en
dc.subject.other	biomechanics	en
dc.subject.other	color	en
dc.subject.other	correlational study	en
dc.subject.other	cross linking	en
dc.subject.other	differential scanning calorimetry	en
dc.subject.other	drug isolation	en
dc.subject.other	experimental study	en
dc.subject.other	face	en
dc.subject.other	function test	en
dc.subject.other	glass transition temperature	en
dc.subject.other	hardness	en
dc.subject.other	immersion	en
dc.subject.other	machine	en
dc.subject.other	mathematical model	en
dc.subject.other	maxilla	en
dc.subject.other	measurement	en
dc.subject.other	medical instrumentation	en
dc.subject.other	melting point	en
dc.subject.other	prosthesis	en
dc.subject.other	sample	en
dc.subject.other	sebum	en
dc.subject.other	simulation	en
dc.subject.other	skin secretion	en
dc.subject.other	spectrophotometer	en
dc.subject.other	sweating	en
dc.subject.other	weight change	en
dc.subject.other	weight reduction	en
dc.subject.other	Absorption	en
dc.subject.other	Acids	en
dc.subject.other	Algorithms	en
dc.subject.other	Alkalies	en
dc.subject.other	Analysis of Variance	en
dc.subject.other	Calorimetry, Differential Scanning	en
dc.subject.other	Color	en
dc.subject.other	Elastomers	en
dc.subject.other	Hardness Tests	en
dc.subject.other	Materials Testing	en
dc.subject.other	Maxillofacial Prosthesis	en
dc.subject.other	Models, Statistical	en
dc.subject.other	Polyethylenes	en
dc.subject.other	Sebum	en
dc.subject.other	Skin	en
dc.subject.other	Sweat	en
dc.subject.other	Temperature	en
dc.title	Material properties of a maxillofacial chlorinated polyethylene elastomer stored in simulated skin secretions	en
heal.type	journalArticle	en
heal.identifier.primary	10.1002/jbm.b.31482	en
heal.identifier.secondary	http://dx.doi.org/10.1002/jbm.b.31482	en
heal.language	English	en
heal.publicationDate	2009	en
heal.abstract	Statement of Problem: Facial prostheses deteriorate in a service environment primary due to exposition to various environmental factors, including sebaceous oils (sebum) and perspiration. Purpose: This study investigated the physical properties of an experimental, facial prosthetic after immersion for 6 months in simulated sebum, and perspiration at 37 degrees C. Material and Methods: Chlorinated polyethylene (CPE) specimens were immersed in simulated perspiration as well as in sebum. Compression tests were conducted on a Zwick testing machine. Shore A hardness measurements were carried out in a CV digital Shore A durometer. Melting and glass transition temperatures were evaluated with a differential scanning calorimeter. Weight changes were measured and color changes were determined in the CIE LAB system using a MiniScan XE spectrophotometer. Simple mathematical models were developed to correlate the measured properties with immersion time. The data were also subjected to analyses of variance (ANOVA) and the Tukey multiple range tests at a level of alpha = 0.05. Results: Specimens immersed in perspiration became harder due to facilitation of the propagation of cross-linking reaction that probably occurred during aging of the CPE samples. Some weight increase was observed for the specimens immersed into the aqueous solutions, whereas for those immersed in sebum, weight loss was recorded, probably because of extraction of some compounds. The color change was higher for the specimens immersed in sebum than that corresponding to simulated perspiration. Conclusions: The chlorinated polyethylene specimens aged for a period, which simulates 1.5 years of clinical service(1), showed significant deformations in their physical properties. (C) 2009 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater 91B: 964-974, 2009	en
heal.publisher	WILEY-LISS	en
heal.journalName	Journal of Biomedical Materials Research - Part B Applied Biomaterials	en
dc.identifier.doi	10.1002/jbm.b.31482	en
dc.identifier.isi	ISI:000270868600056	en
dc.identifier.volume	91	en
dc.identifier.issue	2	en
dc.identifier.spage	964	en
dc.identifier.epage	974	en