An investigation on morphology and mechanical properties of HDPE/nanoclay/nanoCaCO{sub 3} ternary nanocomposites

Journal Article · Tue Mar 08 23:00:00 EST 2016 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4942301· OSTI ID:22589311

Garmabi, Hamid; Tabari, Seyed Emad Alavi; Javadi, Azizeh ^[1]; Behrouzi, Hormoz; Hosseini, Gholamabbas ^[2]

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1. Department of Polymer Engineering and Color Technology, Amirkabir University of Technology - Tehran - Iran (Iran, Islamic Republic of)
2. Boushehr Province Gas Company - Boushehr - Iran (Iran, Islamic Republic of)

Ternary Nanocomposites of high-density polyethylene (HDPE) containing two types of nano particles, a layered organoclay (Closite 15A) and a spherical nano Calcium Carbonate (CaCO{sub 3}), with various compositions were prepared using melt mixing. Maleic anhydride grafted polyethylene (MA-g-PE) was used to enhance the dispersion of nanofillers and better interface adhesion. Three different levels of nanoclay (1, 3, 5 wt. %), CaCO{sub 3} (6, 8, 10 wt. %) and MA-g-PE (3, 6, 9 wt. %) were used. The mixing was done in two steps: First a concentrated masterbatch of nanoparticles in HPDE and MA-g-PE was prepared using an internal mixer and then melt-mixing of nanocomposites was done in a lab scale co-rotating twin screw extruder. The morphology of samples was studied using Scanning Electron Microscopy (SEM) and mechanical properties were evaluated using tensile and impact tests. According to the SEM micrographs, nanofillers were well dispersed in the HDPE matrix and XRD patterns showed the intercalation of nanoclay layers too. Generally using the layered nanoclay can enhance the tensile modulus while the use of spherical nano CaCO{sub 3} results into improved toughness. It was found that co-incorporation of these two types of nanofillers, leads to improve the stiffness and minimize the reduction of impact strength, simultaneously.

• OSTI ID: 22589311
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1713; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
77 NANOSCIENCE AND NANOTECHNOLOGY
CALCIUM CARBONATES
FLEXIBILITY
IMPACT STRENGTH
IMPACT TESTS
INTERFACES
LAYERS
MATRIX MATERIALS
MORPHOLOGY
NANOCOMPOSITES
NANOPARTICLES
POLYETHYLENES
SCANNING ELECTRON MICROSCOPY
SPHERICAL CONFIGURATION
X-RAY DIFFRACTION