Structural damages of maxillofacial biopolymers under solar aging

Eleni, PN; Krokida, MK; Frangou, MJ; Polyzois, GL; Maroulis, ZB; Marinos-Kouris, D

dc.contributor.author	Eleni, PN	en
dc.contributor.author	Krokida, MK	en
dc.contributor.author	Frangou, MJ	en
dc.contributor.author	Polyzois, GL	en
dc.contributor.author	Maroulis, ZB	en
dc.contributor.author	Marinos-Kouris, D	en
dc.date.accessioned	2014-03-01T01:27:18Z
dc.date.available	2014-03-01T01:27:18Z
dc.date.issued	2007	en
dc.identifier.issn	0957-4530	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/18392
dc.subject	Compression Test	en
dc.subject	Differential Scanning Calorimetry	en
dc.subject	Mathematical Model	en
dc.subject	Mechanical Testing	en
dc.subject	Melting Temperature	en
dc.subject	Solar Radiation	en
dc.subject	Structural Stability	en
dc.subject.classification	Engineering, Biomedical	en
dc.subject.classification	Materials Science, Biomaterials	en
dc.subject.other	Differential scanning calorimetry	en
dc.subject.other	Prosthetics	en
dc.subject.other	Silicones	en
dc.subject.other	Synthesis (chemical)	en
dc.subject.other	Thermal aging	en
dc.subject.other	Maxillofacial prosthetics	en
dc.subject.other	Silicone biopolymers	en
dc.subject.other	Solar aging	en
dc.subject.other	Structural damages	en
dc.subject.other	Biopolymers	en
dc.subject.other	biopolymer	en
dc.subject.other	article	en
dc.subject.other	compression	en
dc.subject.other	differential scanning calorimetry	en
dc.subject.other	enthalpy	en
dc.subject.other	melting point	en
dc.subject.other	priority journal	en
dc.subject.other	solar energy	en
dc.subject.other	stress strain relationship	en
dc.subject.other	synthesis	en
dc.subject.other	viscoelasticity	en
dc.subject.other	Biomechanics	en
dc.subject.other	Biopolymers	en
dc.subject.other	Calorimetry, Differential Scanning	en
dc.subject.other	Compressive Strength	en
dc.subject.other	Elasticity	en
dc.subject.other	Humans	en
dc.subject.other	Materials Testing	en
dc.subject.other	Maxillofacial Prosthesis	en
dc.subject.other	Silicone Elastomers	en
dc.subject.other	Sunlight	en
dc.subject.other	Thermodynamics	en
dc.subject.other	Tissue Engineering	en
dc.title	Structural damages of maxillofacial biopolymers under solar aging	en
heal.type	journalArticle	en
heal.identifier.primary	10.1007/s10856-007-3027-4	en
heal.identifier.secondary	http://dx.doi.org/10.1007/s10856-007-3027-4	en
heal.language	English	en
heal.publicationDate	2007	en
heal.abstract	Additional types of silicone biopolymers are widely used in maxillofacial prosthetics. Therefore, the knowledge of the solar radiation's effect on their structural stability is highly important. Four different industrially synthesized biomaterials were examined, called Episil Europe 1, Europe 2, Europe 3 and Africa 3, which were exposed to solar radiation (UVA, UVB) for eight different time periods (from 8 to 168 h). Structural damages due to irradiation exposure were investigated by mechanical tests (compression) and differential scanning calorimetry (DSC) methods. Simple mathematical models were developed, containing parameters with physical meaning such as maximum stress (σmax), maximum strain (ε), elasticity parameter (E), and viscoelastic parameter (p), for the compression test, and melting temperature (T m) and Enthalpy in melting point (Heat) for DSC. With increasing irradiation time their maximum stress and strain decreased significantly, and the materials lost their elasticity and molecular stability. A decrement in their melting points and heats was observed as irradiation time was increasing. Finally, experimental results demonstrated that solar radiation has a severe effect on the structural stability of the examined biomaterials. © 2007 Springer Science+Business Media, LLC.	en
heal.publisher	SPRINGER	en
heal.journalName	Journal of Materials Science: Materials in Medicine	en
dc.identifier.doi	10.1007/s10856-007-3027-4	en
dc.identifier.isi	ISI:000251015800002	en
dc.identifier.volume	18	en
dc.identifier.issue	9	en
dc.identifier.spage	1675	en
dc.identifier.epage	1681	en