Molecular mobility in biodegradable poly (ε -caprolactone)/ poly(hydroxyethyl acrylate) networks

Sabater I Serra, R; Kyritsis, A; Escobar Ivirico, JL; Gomez Ribelles, JL; Pissis, P; Salmeron-Sanchez, M

dc.contributor.author	Sabater I Serra, R	en
dc.contributor.author	Kyritsis, A	en
dc.contributor.author	Escobar Ivirico, JL	en
dc.contributor.author	Gomez Ribelles, JL	en
dc.contributor.author	Pissis, P	en
dc.contributor.author	Salmeron-Sanchez, M	en
dc.date.accessioned	2014-03-01T01:36:21Z
dc.date.available	2014-03-01T01:36:21Z
dc.date.issued	2011	en
dc.identifier.issn	12928941	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/21289
dc.subject	Differential Scanning Calorimetry	en
dc.subject	Glass Transition	en
dc.subject	Molecular Structure	en
dc.subject.other	Caprolactone	en
dc.subject.other	Copolymer networks	en
dc.subject.other	Heterogeneous domains	en
dc.subject.other	Hydrophilic units	en
dc.subject.other	Hydroxyethyl acrylate	en
dc.subject.other	Molecular mobility	en
dc.subject.other	Thermally stimulated depolarization currents	en
dc.subject.other	Topological constraints	en
dc.subject.other	Water molecule	en
dc.subject.other	Copolymerization	en
dc.subject.other	Copolymers	en
dc.subject.other	Differential scanning calorimetry	en
dc.subject.other	Glass transition	en
dc.subject.other	Hydrophilicity	en
dc.subject.other	Microphase separation	en
dc.subject.other	Water content	en
dc.subject.other	Polycaprolactone	en
dc.subject.other	biomaterial	en
dc.subject.other	glass	en
dc.subject.other	polycaprolactone	en
dc.subject.other	polyester	en
dc.subject.other	polymacon	en
dc.subject.other	polymer	en
dc.subject.other	water	en
dc.subject.other	article	en
dc.subject.other	biophysics	en
dc.subject.other	chemical structure	en
dc.subject.other	chemistry	en
dc.subject.other	crystallization	en
dc.subject.other	differential scanning calorimetry	en
dc.subject.other	heat	en
dc.subject.other	kinetics	en
dc.subject.other	materials testing	en
dc.subject.other	methodology	en
dc.subject.other	temperature	en
dc.subject.other	Biocompatible Materials	en
dc.subject.other	Biophysics	en
dc.subject.other	Calorimetry, Differential Scanning	en
dc.subject.other	Crystallization	en
dc.subject.other	Glass	en
dc.subject.other	Hot Temperature	en
dc.subject.other	Kinetics	en
dc.subject.other	Materials Testing	en
dc.subject.other	Molecular Structure	en
dc.subject.other	Polyesters	en
dc.subject.other	Polyhydroxyethyl Methacrylate	en
dc.subject.other	Polymers	en
dc.subject.other	Temperature	en
dc.subject.other	Water	en
dc.title	Molecular mobility in biodegradable poly (ε -caprolactone)/ poly(hydroxyethyl acrylate) networks	en
heal.type	journalArticle	en
heal.identifier.primary	10.1140/epje/i2011-11037-4	en
heal.identifier.secondary	i2011-11037-4	en
heal.identifier.secondary	http://dx.doi.org/10.1140/epje/i2011-11037-4	en
heal.publicationDate	2011	en
heal.abstract	Poly(ε-caprolactone)/poly(hydroxyethyl acrylate) networks have been investigated by thermally stimulated depolarization currents (TSDC) and differential scanning calorimetry (DSC). The introduction of hydrophilic units (HEA) in the system aiming at tailoring the hydrophilicity of the system results in a series of copolymer networks with microphase separation into hydrophobic/hydrophilic domains. Polycaprolactone (PCL) crystallization is prevented by the topological constraints HEA units imposed in such heterogeneous domains. Moreover, the mobility of the amorphous PCL chains is enhanced as revealed by the main relaxation process which becomes faster. The glass transition of PHEA-rich domains shifts to lower temperatures, as the total amount of PCL in the copolymer increases, due to the presence of PCL units within the same region. The behaviour of the copolymer networks swollen with different content of water has been investigated to analyze the interaction between water molecules and hydrophobic/hydrophilic domains and provide further insights into the molecular structure of the system. © 2011 EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg.	en
heal.journalName	European Physical Journal E	en
dc.identifier.doi	10.1140/epje/i2011-11037-4	en
dc.identifier.volume	34	en
dc.identifier.issue	4	en