Engineering HDR Seminar Series 24, 2012: Green Polymer Nanocomposites: Preparation and Modelling of Epoxy-halloysite Nanotubes Nanocomposites

Mr Vahdat Vahedi, EGT postgraduate student

Date: 2012-12-13
Time: 10:00 to 11:00
Venue: Engineering Meeting Room 1, 5-4-22


Epoxy resins are widely used in heavy-duty parts in automotive, aerospace and electronics industries due to their very high mechanical, thermal and chemical properties. However, improvement the impact resistance-as the major failure mechanism of inherently brittle epoxies- without affecting other favorable properties and affordable processing and production has been remained still a big challenge.Recently, halloysite nanotubes (HNTs) have been studied as a new type of reinforcing filler for polymers with unique characteristics, easy process and cheaper costs, which could drastically increase the impact toughness of epoxies. Moreover the presence of lumen space inside the HNTs enables them to carry modifiers and agents. This study aims to improve the impact performance of epoxy trough manipulation of halloysite nanotube as a reinforcing filler, to restrict crack formation and propagation, and as a nano-container for healing agent, for self healing of the cracks formed in epoxy matrix. In this regard, effective mixing methods and modification of HNTs by APTES and DGEBA will be considered to achieve homogeneous dispersion of halloysite in epoxy matrix and the effects of healing agents loaded HNTs on self-healing performance of HNT/epoxy nanocomposite will be investigated. Mechanical properties will be tested by instrumental impact tester and universal tensile machine; SEM, TEM, FTIR, TGA and DMA analysis will be used to study the fracture mechanism and structure-property relationship for better understanding in fundamental effects of modification and encapsulation of HNTs in epoxy nanocomposites

About the Speaker

Mr Vahdat Vahedi received his BSc in Polymer Engineering from Amir Kabir University of Technology (Polytechnic of Tehran), in 2001, and his MSc in Polymer Engineering from “Iran Polymer and Petrochemical Institute” in 2004. He worked as a research engineer and part time lecturer for 7 years. He joined Monash University for postgraduate studies in year 2012 under the supervision of Dr. Pooria Pasbakhsh and Dr. Chai Siang Piao. His research in Monash University is focused on the development of self-healing epoxy/halloysite nanocomposites.