Compatibilizing effect of maleated polypropylene on the mechanical properties and morphology of injection molded polyamide 6/polypropylene/organoclay nanocomposites

W. S. Chow, Z. A Mohd Ishak, J. Karger-Kocsis, A. A. Apostolov, U. S. Ishiaku

Research output: Contribution to journalArticle

264 Citations (Scopus)

Abstract

Polyamide 6/polypropylene (PA6/PP = 70/30 parts) blends containing 4 phr (parts per hundred resin) of organophilic modified montmorillonite (organoclay) were prepared using twin screw extruder followed by injection molding. Maleated polypropylene (MAH-g-PP) was used to compatibilize the blend system. The mechanical properties of PA6/PP nanocomposites were studied through tensile and flexural tests. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were used to assess the fracture surface morphology and the dispersion of the organoclay, respectively. X-ray diffraction (XRD) was used to characterize the formation of nanocomposites. The thermal properties were characterized by using differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The dynamic mechanical properties of PA6/PP nanocomposites were analyzed by using dynamic mechanical thermal analyzer (DMTA). The strength and stiffness of PA6/PP nanocomposites were improved significantly in the presence of MAH-g-PP. This has been attributed to the synergistic effect of organoclay and MAH-g-PP. The MAH-g-PP compatibilized PA6/PP nanocomposites showed a homogeneous morphology supporting the compatibility improvement between PA6, PP and organoclay. TEM and XRD results revealed the formation of nanocomposites as the organoclay was intercalated and exfoliated. A possible chemical interaction between PA6, PP, organophilic modified montmorillonite and MAH-g-PP was proposed based on the experimental work.

Original languageEnglish
Pages (from-to)7427-7440
Number of pages14
JournalPolymer (United Kingdom)
Volume44
Issue number24
DOIs
Publication statusPublished - Oct 31 2003

Fingerprint

Organoclay
Polypropylenes
Polyamides
Nanocomposites
Mechanical properties
Bentonite
Clay minerals
Transmission electron microscopy
X ray diffraction
Extruders
Injection molding
Surface morphology
Thermogravimetric analysis
nylon 6
Differential scanning calorimetry
Thermodynamic properties
Resins
Stiffness
Scanning electron microscopy

Keywords

  • Nanocomposites
  • Organoclay
  • Polyamide 6/polypropylene blends

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics

Cite this

Compatibilizing effect of maleated polypropylene on the mechanical properties and morphology of injection molded polyamide 6/polypropylene/organoclay nanocomposites. / Chow, W. S.; Ishak, Z. A Mohd; Karger-Kocsis, J.; Apostolov, A. A.; Ishiaku, U. S.

In: Polymer (United Kingdom), Vol. 44, No. 24, 31.10.2003, p. 7427-7440.

Research output: Contribution to journalArticle

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abstract = "Polyamide 6/polypropylene (PA6/PP = 70/30 parts) blends containing 4 phr (parts per hundred resin) of organophilic modified montmorillonite (organoclay) were prepared using twin screw extruder followed by injection molding. Maleated polypropylene (MAH-g-PP) was used to compatibilize the blend system. The mechanical properties of PA6/PP nanocomposites were studied through tensile and flexural tests. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were used to assess the fracture surface morphology and the dispersion of the organoclay, respectively. X-ray diffraction (XRD) was used to characterize the formation of nanocomposites. The thermal properties were characterized by using differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The dynamic mechanical properties of PA6/PP nanocomposites were analyzed by using dynamic mechanical thermal analyzer (DMTA). The strength and stiffness of PA6/PP nanocomposites were improved significantly in the presence of MAH-g-PP. This has been attributed to the synergistic effect of organoclay and MAH-g-PP. The MAH-g-PP compatibilized PA6/PP nanocomposites showed a homogeneous morphology supporting the compatibility improvement between PA6, PP and organoclay. TEM and XRD results revealed the formation of nanocomposites as the organoclay was intercalated and exfoliated. A possible chemical interaction between PA6, PP, organophilic modified montmorillonite and MAH-g-PP was proposed based on the experimental work.",
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AU - Ishiaku, U. S.

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