The aim of this study was to improve the mechanical properties &ldquo / Moplen&rdquo / EP300L
which is a heterophase copolymer. Polymer blends and nanocomposites were
prepared by melt compounding method in a twin screw extruder. Nanofil® / 5 (N5) and
Nanofil® / 8(N8) were used as the organoclays, and maleic anhydride grafted
polypropylene (M) was used as the compatibilizer. The effects of additive
concentrations and types of organoclays on the morphology, mechanical and thermal
properties were investigated.
Organoclay loading over 2 wt% prevented the intercalation mechanism resulting in
large aggregates of clay, thus the material properties became poor even in the
presence of compatibilizer. Compatibilizer addition improved the intercalation ability
of the polymer, however a substantial increase in mechanical properties was not
obtained up to 6 wt % loading of the compatibilizer.
XRD analysis revealed that intercalated structures were formed with the addition of
compatibilizer and organoclay. The nanocomposites that were prepared with N5 type
organoclay showed delaminated structures at 6 wt % compatibilizer loading.
v
Nanofill ® / 5 exhibited the highest improvements in mechanical properties, since the
degree of organoclay dispersion was better in Nanofill ® / 5 containing
nanocomposites in comparison to Nanofill ® / 8 containing ones. The DSC analysis
indicated a insignificant reduction in the melting temperature of the ternary
nanocomposites.
| Identifer | oai:union.ndltd.org:METU/oai:etd.lib.metu.edu.tr:http://etd.lib.metu.edu.tr/upload/12613291/index.pdf |
| Date | 01 June 2011 |
| Creators | Yilmaz, Sule Seda |
| Contributors | Yilmazer, Ulku |
| Publisher | METU |
| Source Sets | Middle East Technical Univ. |
| Language | English |
| Detected Language | English |
| Type | M.S. Thesis |
| Format | text/pdf |
| Rights | To liberate the content for public access |
Page generated in 0.0017 seconds