Morphology Control and Stabilization in Immiscible Polypropylene and Polyamide 6 Blends with Organoclay
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J. Huang
Abstract
In the current study, 70/30 (w/w) polypropylene (PP)/polyamide 6 (PA6)/organoclay ternary blends were prepared by melt mixing in three different blending sequences, i. e., organoclay premixed with PA6 and then mixed with PP (S1 blending sequence), organoclay premixed with PP and then mixed with PA6 (S2 blending sequence), and organoclay, PA6 and PP mixed simultaneously (S3 blending sequence). The effects of organoclay on the phase morphologies, rheological properties and mechanical properties of the blends are examined to reveal the role of organoclay in these immiscible blends. First of all, the dispersion and distribution of organoclay is investigated using XRD and TEM techniques. The organoclay is exfoliated and distributed in the dispersed PA6 phase as well as at the interface between PA6 and PP. Interestingly, more organoclay sheets are observed at the interface when the S2 or S3 blending sequences are utilized. From the SEM images, it is clear that the domain size of the PA6 phase decreases remarkably after introducing organoclay into the PP/PA6 blends. Two different rheological protocols are applied to probe the effect of organoclay on the morphology of the blend by in-situ monitoring the morphological evolution. The rheological results reveal that the phase morphology of the PP/PA6 blends remains relatively stable during shear for a wide range of shear rates when 1.0 wt% organoclay has been added. For the blends with a relatively high clay loading (5.0 wt%), a characteristic and pronounced “plateau” is observed in the low frequency range of the G′-ω curves, which indicates the presence of a percolating network of clay nanosheets. From the mechanical measurements, we find that the tensile strength of the blends increases slightly first and then declines dramatically with increasing organoclay content. Moreover, the elongation at break drops sharply as the organoclay content increases. In summary, it is clear that the organoclay can effectively reduce the domain size of the dispersed PA6 phase and stabilize the phase morphology in shear flow. However, the mechanical properties of the blends are not really improved by clay addition, even though a cocontinuous morphology with a percolated clay network was generated.
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© 2014, Carl Hanser Verlag, Munich
Artikel in diesem Heft
- Contents
- Contents
- Invited Papers
- Simha-Somcynsky Equation of State Modeling of the PVT Behavior of PP/Clay-Nanocomposite/CO2 Mixtures
- Regular Contributed Articles
- Effect of Pre-Molding Process and Additive of Injection Molded Wood/PP Composites
- Flame Retarded PE with MH/ATH/Microencapsulated Red Phosphorous and its Toughening by Polymeric Compatibilizers
- The Porous Structure and Mechanical Properties of Injection Molded HA/PA66 Scaffolds
- A Gas-Sensor-Based Measurement Setup for Inline Quality and Process Control in Polymer Extrusion
- Extrusion and Characterization of Soy Protein Film Incorporated with Soy Cellulose Microfibers
- Development of Composites of Highly Filled Phenol Formaldehyde Resin – Coconut (Cocos nucifera) Endocarp Particles
- Structural Analysis Examining the Mold Deformation Behavior for the Detection of the Flash in the Injection Mold
- Epoxidized Esters of Palm Kernel Oil as an Effective Plasticizer for PVC: A Study of Mechanical Properties and Effect of Processing Conditions
- Injection Molding of Beverage Container Caps Made of a Composite Consisting of Wood Cellulose Fiber and an Ethylene-Acrylic Acid Copolymer
- Study on Pumping Conveying Capacity Characteristics of Polymer Solids in Vane Extruder
- Morphology Control and Stabilization in Immiscible Polypropylene and Polyamide 6 Blends with Organoclay
- Optimization of Abrasive Water Jet Turning Parameters for Machining of Low Density Polyethylene Material Based on Experimental Design Method
- PPS News
- PPS News
- Seikei Kakou Abstracts
- Seikei Kakou Abstracts
Artikel in diesem Heft
- Contents
- Contents
- Invited Papers
- Simha-Somcynsky Equation of State Modeling of the PVT Behavior of PP/Clay-Nanocomposite/CO2 Mixtures
- Regular Contributed Articles
- Effect of Pre-Molding Process and Additive of Injection Molded Wood/PP Composites
- Flame Retarded PE with MH/ATH/Microencapsulated Red Phosphorous and its Toughening by Polymeric Compatibilizers
- The Porous Structure and Mechanical Properties of Injection Molded HA/PA66 Scaffolds
- A Gas-Sensor-Based Measurement Setup for Inline Quality and Process Control in Polymer Extrusion
- Extrusion and Characterization of Soy Protein Film Incorporated with Soy Cellulose Microfibers
- Development of Composites of Highly Filled Phenol Formaldehyde Resin – Coconut (Cocos nucifera) Endocarp Particles
- Structural Analysis Examining the Mold Deformation Behavior for the Detection of the Flash in the Injection Mold
- Epoxidized Esters of Palm Kernel Oil as an Effective Plasticizer for PVC: A Study of Mechanical Properties and Effect of Processing Conditions
- Injection Molding of Beverage Container Caps Made of a Composite Consisting of Wood Cellulose Fiber and an Ethylene-Acrylic Acid Copolymer
- Study on Pumping Conveying Capacity Characteristics of Polymer Solids in Vane Extruder
- Morphology Control and Stabilization in Immiscible Polypropylene and Polyamide 6 Blends with Organoclay
- Optimization of Abrasive Water Jet Turning Parameters for Machining of Low Density Polyethylene Material Based on Experimental Design Method
- PPS News
- PPS News
- Seikei Kakou Abstracts
- Seikei Kakou Abstracts
