Effect of Nanoclay Addition on Morphology and Elastomeric Properties of Dynamically Vulcanized Natural Rubber/Polypropylene Nanocomposites
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N. Lopattananon
, S. Tanglakwaraskul , A. Kaesaman , M. Seadan und T. Sakai
Abstract
Thermoplastic vulcanizate (TPV) nanocomposites based on 60/40 (%wt) natural rubber (NR)/polypropylene (PP) blends were prepared by melt blending in an internal mixer. Sodium montmorillonite (Na-MMT) was first added in natural rubber latex to obtain natural rubber/clay masterbatch, which was subsequently dynamically crosslinked while mixing with molten PP. The effect of Na-MMT content were examined concerning elastomeric properties of NR/PP blends dynamically vulcanized using phenolic resin as a curing agent. Morphology characterization observed by X-ray diffraction (XRD), transmission electron microscopy (TEM) and 3D microfocus X-ray computerized tomography showed that the dynamic vulcanization with nanoclay addition changed the blend morphology from a co-continuous-like structure to droplet-like phase one, and the clay remained within NR phase in intercalated and aggregated forms. Furthermore, the presence of clay induced the decrease in crosslinking of NR, but promoted the mixing between NR and PP during dynamic vulcanization. This suggested that nanoclay worked as a kind of morphology modifier during dynamic vulcanization. The addition of clay marginally enhanced the 100 % modulus and tensile strength, but led to the decrease of the elongation at break. The optimal level of tensile strength improvement was obtained with loading of 5 phr clay. The permanent set of the NR/PP/Clay TPV nanocomposites was well maintained at the acceptable level as elastomer. The resistances to oil and heat were improved with incorporation of clay, proportional to clay loading. The experimental results indicated that the nanoclay had a positive effect on improving the 60/40 NR/PP blend morphology, which provided a little benefit to strength of the TPVs. However, the addition of nanoclay offered an improvement in oil and thermal resistances due to a combined effect of the clay dispersion and improved morphology of NR and PP blends.
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Artikel in diesem Heft
- Contents
- Contents
- 4th Multi-Functional Materials and Structure Conference
- Experimental and Computational Investigations of Creep Responses of Wood/PVC Composite Members
- Dispersion Enhancement of Multi-Walled Carbon Nanotubes in Nitrile Rubber
- Mold Filling Simulation Dependence on Material Data Input for Injection Molding Process of Natural Rubber Compound
- Effect of Nanoclay Addition on Morphology and Elastomeric Properties of Dynamically Vulcanized Natural Rubber/Polypropylene Nanocomposites
- Regular Contributed Articles
- A Study of Non-Isothermal Kinetic Reaction for Vulcanization of Chloride Butyl Rubber via Phenol Formaldehyde Resin
- Preparation and Properties of Fluorinated Acrylate Resin Film with Resisting Fluid for Dairy Packaging
- Three-Body Abrasive Wear Behavior of Needle-Punch Nonwoven Jute Fiber Reinforced Epoxy Composites
- Novel Embossing System for Replicating Micro-Structures on Curved Surfaces
- Improved Interfacial Properties of PA6/DE Blends by DE-g-MAH Prepared through Ultrasound Assisted Extrusion
- Effect of Vetiver Grass Fiber on Soil Burial Degradation of Natural Rubber and Polylactic Acid Composites
- A Study on the Mechanical Property and 3D Fiber Distribution in Injection Molded Glass Fiber Reinforced PA66
- Unlimited Shear as a Source of Information in Polymer Melt Processing
- Feeding an Extruder of a Modified Feed Zone Design with Poly(vinyl chloride) Pellets of Variable Geometric Properties
- Enhance Slower Relaxation Process of Poly(ethyl acrylate) through Internal Plasticization
- PPS News
- PPS News
Artikel in diesem Heft
- Contents
- Contents
- 4th Multi-Functional Materials and Structure Conference
- Experimental and Computational Investigations of Creep Responses of Wood/PVC Composite Members
- Dispersion Enhancement of Multi-Walled Carbon Nanotubes in Nitrile Rubber
- Mold Filling Simulation Dependence on Material Data Input for Injection Molding Process of Natural Rubber Compound
- Effect of Nanoclay Addition on Morphology and Elastomeric Properties of Dynamically Vulcanized Natural Rubber/Polypropylene Nanocomposites
- Regular Contributed Articles
- A Study of Non-Isothermal Kinetic Reaction for Vulcanization of Chloride Butyl Rubber via Phenol Formaldehyde Resin
- Preparation and Properties of Fluorinated Acrylate Resin Film with Resisting Fluid for Dairy Packaging
- Three-Body Abrasive Wear Behavior of Needle-Punch Nonwoven Jute Fiber Reinforced Epoxy Composites
- Novel Embossing System for Replicating Micro-Structures on Curved Surfaces
- Improved Interfacial Properties of PA6/DE Blends by DE-g-MAH Prepared through Ultrasound Assisted Extrusion
- Effect of Vetiver Grass Fiber on Soil Burial Degradation of Natural Rubber and Polylactic Acid Composites
- A Study on the Mechanical Property and 3D Fiber Distribution in Injection Molded Glass Fiber Reinforced PA66
- Unlimited Shear as a Source of Information in Polymer Melt Processing
- Feeding an Extruder of a Modified Feed Zone Design with Poly(vinyl chloride) Pellets of Variable Geometric Properties
- Enhance Slower Relaxation Process of Poly(ethyl acrylate) through Internal Plasticization
- PPS News
- PPS News