Fracture toughness response and residual property modelling in polymer nanocompositeS

Mouzakis, DE; Papanicolaou, GC; Argyrakis, CHR; Kandilioti, G; Kontarinis, D; Gregoriou, VG

dc.contributor.author	Mouzakis, DE	en
dc.contributor.author	Papanicolaou, GC	en
dc.contributor.author	Argyrakis, CHR	en
dc.contributor.author	Kandilioti, G	en
dc.contributor.author	Kontarinis, D	en
dc.contributor.author	Gregoriou, VG	en
dc.date.accessioned	2014-03-01T01:57:08Z
dc.date.available	2014-03-01T01:57:08Z
dc.date.issued	2008	en
dc.identifier.issn	17904439	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/28359
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-77957574909&partnerID=40&md5=510a9d981e5f6ad84067688f165853d3	en
dc.subject.other	Accurate prediction	en
dc.subject.other	Deeply double-edge notched tensions	en
dc.subject.other	Double edge notches	en
dc.subject.other	Essential work of fracture	en
dc.subject.other	Essential work of fracture methods	en
dc.subject.other	Experimental data	en
dc.subject.other	Fracture behaviour	en
dc.subject.other	Improved mechanical characteristics	en
dc.subject.other	Layer thickness	en
dc.subject.other	matrix	en
dc.subject.other	Nano scale	en
dc.subject.other	Nanofiller	en
dc.subject.other	Notch length	en
dc.subject.other	Notched specimens	en
dc.subject.other	PET films	en
dc.subject.other	PET substrate	en
dc.subject.other	Polymer nanocomposite	en
dc.subject.other	Residual properties	en
dc.subject.other	Semiempirical models	en
dc.subject.other	Syndiotactic polypropylene (sPP)	en
dc.subject.other	Thick layers	en
dc.subject.other	Behavioral research	en
dc.subject.other	Clay minerals	en
dc.subject.other	Films	en
dc.subject.other	Fracture toughness	en
dc.subject.other	Mechanical properties	en
dc.subject.other	Nanocomposite films	en
dc.subject.other	Nanocomposites	en
dc.subject.other	Polyethylene terephthalates	en
dc.subject.other	Polypropylenes	en
dc.subject.other	Polystyrenes	en
dc.subject.other	Silicate minerals	en
dc.subject.other	Tensile strength	en
dc.subject.other	Fracture	en
dc.title	Fracture toughness response and residual property modelling in polymer nanocompositeS	en
heal.type	journalArticle	en
heal.publicationDate	2008	en
heal.abstract	In the present study the fracture behaviour of polyethylene terephthalate (PET) and syndiotactic polypropylene (sPP) thin nanocomposite films is presented. The behaviour of these films was studied by the Essential Work of Fracture (EWF) method. Both the PET and sPP films where reinforced with materials in the nanoscale in order to achieve improved mechanical characteristics. In the case of PET films, a nano-layer of polystyrene (PS) was laid on top of the PET matrix film with a maximum layer thickness of 600 nm and a minimum of < 20 nm. DDENT (deeply double edge notched tension) specimens were cut and tested in tension for the determination of the specific essential work of fracture. The same experimetal procedure was followed for the sPP films, which were filled with a nanosilicate (montmorillonite) in contents of 0.5 and 1 wt.% respectively. It was shown that a mere 50 nm of PS thick layer on the PET substrate can provide some toughness improvement (ca. 20%) whereas the sPP/montmorillonite systems has exhibited a drastic 100% of EWF toughness improvement at 1wt% of nano- filler content. Finally, a semi-empirical model for the prediction of the residual mechanical properties of the notched specimens has been successfully applied in the present study. The model was employed for the evaluation of the reduction of the residual tensile strength of the specimens tested due to the existence of the double edge notch and for different notch lengths. The model allows quite accurate predictions by using experimental data of only one specimen.	en
heal.journalName	Journal of Nanostructured Polymers and Nanocomposites	en
dc.identifier.volume	4	en
dc.identifier.issue	3	en
dc.identifier.spage	100	en
dc.identifier.epage	109	en