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

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Εθνικό Μετσόβιο Πολυτεχνείο   

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Material properties of a maxillofacial chlorinated polyethylene elastomer stored in simulated skin secretions (EN)
Gettleman, L (EN)
Krokida, MK (EN)
Eleni, PN (EN)
Polyzois, GL (EN)
journalArticle (EN)
2014-03-01T01:31:02Z
2009 (EN)
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)
Engineering, Biomedical (EN)
Materials Science, Biomaterials (EN)
Testing machine (EN)
Electric network analysis (EN)
simulation (EN)
experimental study (EN)
elastomer (EN)
Sebum (EN)
Differential scanning calorimeters (EN)
drug isolation (EN)
polyethylene (EN)
Glass transition (EN)
weight change (EN)
DSC (EN)
Physiology (EN)
Measured properties (EN)
Sweat (EN)
aqueous solution (EN)
Differential scanning calorimetry (EN)
Alkalies (EN)
melting point (EN)
immersion (EN)
Color (EN)
cross linking (EN)
Color changes (EN)
Materials Testing (EN)
function test (EN)
article (EN)
Service environment (EN)
Crosslinking reaction (EN)
hardness (EN)
Analysis of Variance (EN)
Hardness measurement (EN)
differential scanning calorimetry (EN)
Chlorinated polyethylene (EN)
Immersion time (EN)
prosthesis (EN)
Calorimetry, Differential Scanning (EN)
Skin (EN)
spectrophotometer (EN)
correlational study (EN)
Polyethylenes (EN)
Temperature (EN)
color (EN)
Hardness Tests (EN)
Colorimetry (EN)
biomechanics (EN)
measurement (EN)
Weight change (EN)
weight reduction (EN)
Absorption (EN)
Aqueous solutions (EN)
analysis of variance (EN)
skin secretion (EN)
medical instrumentation (EN)
Facial prosthesis (EN)
Mathematical models (EN)
Maxillofacial Prosthesis (EN)
Prosthetics (EN)
Thermoplastics (EN)
maxilla (EN)
Compression tests (EN)
Weight loss (EN)
Elastomers (EN)
Mechanical properties (EN)
Environmental factors (EN)
sebum (EN)
Models, Statistical (EN)
Glass transition temperature (EN)
Physical properties (EN)
glass transition temperature (EN)
sample (EN)
Material property (EN)
Compression testing (EN)
Body fluids (EN)
face (EN)
Algorithms (EN)
Acids (EN)
machine (EN)
mathematical model (EN)
Skin secretions (EN)
aging (EN)
sweating (EN)
Journal of Biomedical Materials Research - Part B Applied Biomaterials (EN)
Αγγλική γλώσσα
WILEY-LISS (EN)
Εθνικό Μετσόβιο Πολυτεχνείο
Ψηφιακό Αποθετήριο της Κεντρικής Βιβλιοθήκης του ΕΜΠ | Dspace@NTUA
Κεντρική Βιβλιοθήκη Ε.Μ.Π.
Ιδρυματικό Αποθετήριο
Δημοσιεύσεις μελών Δ.Ε.Π. σε περιοδικά



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