Production of PMMA/microsphere/ montmorillonite nanocomposite, PMMA / microsphere / halloysite nanocomposite by atom transfer radical polymerization technique and comparison of mechanical properties


Bel T., Arslan C., Baydoğan N.

JOURNAL OF THE FACULTY OF ENGINEERING AND ARCHITECTURE OF GAZI UNIVERSITY, vol.34, no.2, pp.688-700, 2019 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 34 Issue: 2
  • Publication Date: 2019
  • Doi Number: 10.17341/gazimmfd.416525
  • Journal Name: JOURNAL OF THE FACULTY OF ENGINEERING AND ARCHITECTURE OF GAZI UNIVERSITY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, TR DİZİN (ULAKBİM)
  • Page Numbers: pp.688-700
  • Keywords: Self-Healing materials, mechanical properties of self-healing materials, PMMA, halloysite clay nanotubes, montmorillonit clay nanoplates, FTIR
  • Istanbul Technical University Affiliated: Yes

Abstract

To give the PMMA polymer self-repairing properties microspheres (MK) were added into the polymer solution at three different concentrations (1, 3, 5% Wt.). Formaldehyd resin-walled MKs are manufactured with Glycidyl Methacrylate (GMA), which is used as self-healing agent. For ease of production, 1% wt. were added to PMMA solution for produce PMMA / MK / nanoclay nanocomposites. In order to improve the mechanical properties of the PMMA / MK composite, two different clay nanoparticles, nanotubes and nanoplates, were reinforced into the PMMA / MK structure. Production of live PMMA / MK / HNTs and PMMA / MK / MMT nanocomposites was achieved by Atom Transfer Radical Polymerization (ATRP) method. In order to investigate the changes in mechanical properties reinforcement were made at three different concentrations. PMMA / MK structure was reinforced by 1, 3, 5% Wt. Halloysite clay nanotubes (HNTs) and montmorillonite clay nanoplates (MMT). In the nanoclay-reinforced PMMA / MK nanocomposite, after the mechanical damage caused by external environmental factors, the polymer nanocomposite was tried to be restored to the original state by self-healing. Nanocomposite specimens were produced in accordance with the geometry required by the Shore D hardness test, the notched Izod impact test, the 3-point bending test and the compression test standards. Changes in mechanical properties of PMMA / MK / HNTS and PMMA / MK / MMT nanocomposite samples were compared with changes in mechanical properties of PMMA polymer. The change in flexural strength of nanocomposite specimens was investigated after self-healing from mechanical damage.