title
  

Interdiffusing core-shell nanofiber interleaved composites for excellent Mode I and Mode II delamination resistance

Warning The system is temporarily closed to updates for reporting purpose.

Daelemans, Lode and Kızıldağ, Nuray and Van Paepegem, Wim and D'hooge, Dagmar R. and De Clerck, Karen (2019) Interdiffusing core-shell nanofiber interleaved composites for excellent Mode I and Mode II delamination resistance. Composites Science and Technology, 175 . pp. 143-150. ISSN 0266-3538 (Print) 1879-1050 (Online)

[img]PDF - Registered users only - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
2286Kb

Official URL: http://dx.doi.org/10.1016/j.compscitech.2019.03.019

Abstract

Electrospun nanofibre interleaving has a great potential for toughening of composite laminates as an effective, safe and industrially relevant method. Although many studies showcase large increases in delamination resistance, these are typically obtained under either Mode I or Mode II loading and for a wide variety of nanofibres. Here, we present a more general approach towards simultaneous excellent Mode I and Mode II delamination resistance using a single nanofibre system without the need for additional chemical modification steps or speciality polymers. It is illustrated based on the concept of interdiffusion of polycaprolactone nanofibres during the curing process into the epoxy matrix resin for improved adhesion. The results show that for a simultaneous increase in Mode I and Mode II delamination resistance, the adhesion and the fibre morphology of the nanofibres are crucial. The methodology is then expanded to allow for industrial relevant working windows by core-shell structured polyamide/polycaprolactone nanofibres. This approach results in a G(Ic) of 650 +/- 50 J m-2 (+ ca. 60% vs. virgin material) and a G(IIc)( )of 3160 +/- 35 J m-2 (+ ca. 60% vs. virgin material).

Item Type:Article
Uncontrolled Keywords:Nano composites; Fibre/matrix bond; Interphase; Fracture toughness; Electro-spinning
Subjects:UNSPECIFIED
ID Code:38703
Deposited By:Nuray Kızıldağ
Deposited On:24 Aug 2019 12:12
Last Modified:24 Aug 2019 12:12

Repository Staff Only: item control page