Film Processability, Morphology, and Properties of Polyamide-6/Low Density Polyethylene Blends

López‐Barrón, Carlos R.; Robledo‐Ortíz, Jorge R.; Rodrigue, Denis; González‐Núñez, Rubén

doi:10.1177/8756087907083481

Cited by 12 publications

(8 citation statements)

References 30 publications

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“…In addition, molecular orientation imparted during film-blowing is known to have a major effect on the mechanical properties. Therefore, studying the film morphology is crucial to quantify the final properties of the films, especially for the orientation of dispersed domains in immiscible polymer blends [45]. In addition to cited reports, the present study also demonstrates the favorable development of microfibrils along longitudinal direction during extrusion of immiscible blends.…”

Section: Morphological Characterizationsupporting

confidence: 71%

“…Both number-average diameter (d n ) and weight-average diameter (d w ) of the dispersed phase (PP) were determined from frequency histograms obtained by statistical image processing (Image J v.1.8.0) of SEM images, including 50 particles at independent locations. A statistical correction was applied to the diameter distribution according to the method of Saltikov for biaxial orientation [45].…”

Section: Determination Of Phase Morphologymentioning

confidence: 99%

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Morphology, Rheology and Crystallization in Relation to the Viscosity Ratio of Polystyrene/Polypropylene Polymer Blends

et al. 2020

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Microfibrillar and droplet morphology of polypropylene (PP) phase dispersed in polypropylene (PS) was fabricated by using melt-extrusion. This morphology was obtained by introducing isotactic PP (20 wt.%) with different viscosity in the PS matrix (80 wt.%). Furthermore, the rheological properties of the blend investigated as a function of the viscosity ratio K. The variations in blend morphology were related to crystallization, melting properties, and viscoelasticity. The blends with K >> 1 develop a fine morphology with PP microfibrils along the flow direction, while diameters of the dispersed PP droplets gradually increase with lower values of K = 1, or K << 1. Crystallinity of the prepared blends significantly decreases compared to neat PP, while the microfibrillar morphology induces homogeneous crystallization with small crystallites. This is reflected in a decrease of the crystallization temperature, small loss in the crystallinity, and lower melting temperature of the PS80/PP20 blend compared to neat PP. The storage moduli, loss moduli, and complex viscosity are highest for the microfibrillar morphology that presents retarded relaxation. The rheological properties are dominated by the dispersed phase (K > 1), or matrix (K < 1). The variation in blend properties with microfibrillar morphology can be clearly distinguished from heterogeneous blends containing PP droplets, providing an efficient tool to create a binary blend with unique properties.

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Section: Morphological Characterizationsupporting

confidence: 71%

Section: Determination Of Phase Morphologymentioning

confidence: 99%

Morphology, Rheology and Crystallization in Relation to the Viscosity Ratio of Polystyrene/Polypropylene Polymer Blends

et al. 2020

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“…23 The extruder has a L/D ratio of 25 and the temperature profile was fixed at 45, 110, 160, and 210 C. The screw speed was maintained at 15 rpm giving a total throughput of 1.12 kg/h. A water manometer was fixed to the blowing air feed to measure the pressure inside the polymer bubble.…”

Section: Preparation Of Tubular Filmsmentioning

confidence: 99%

Film processability and properties of polycaprolactone/thermoplastic starch blends

Ramírez‐Arreola

Robledo‐Ortíz

Moscoso

et al. 2011

J of Applied Polymer Sci

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In this work, the processing and properties of blown films prepared from thermoplastic corn starch (TPS) and polycaprolactone (PCL) were studied, in particular at high TPS content. The influence of processing parameters and material moisture content on the tensile properties was also studied. The results show that final film properties are mainly controlled by the draw ratio, blow-up ratio and PCL concentration in the blends.The results also show that PCL/TPS films are less hydrophilic as PCL content increases. Finally, it was found that a very narrow processing window exists for this blend.

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“…The morphological and physical properties of multicomponent or multilayered films prepared by melt blending or solution mixing have been extensively characterized. [1][2][3][4][5][6][7] Wang et al 8 prepared poly(lactide) (PLA)/ poly(butylene adipate-co-terephthalate) (PBAT) blend films via solvent casting. They reported that the blending PLA with PBAT at low levels increased the PLA film flexibility without significantly decreasing the mechanical properties and exhibited UV screening effect without significantly lowering transparency.…”

Section: Introductionmentioning

confidence: 99%

Investigation of morphological, rheological, and mechanical properties of cyclic olefin copolymer/poly(ethylene-co-vinyl acetate) blend films

Durmuş

Alanalp

Aydın

2017

Journal of Plastic Film & Sheeting

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In this study, cyclic olefin copolymer/poly(ethylene-co-vinyl acetate) 90/10, 80/20, and 70/30 blends were prepared by melt processing in a twin screw extruder equipped with a cast film haul-off unit to make films. Microstructural, rheological, mechanical, and viscoelastic properties of film samples were investigated by various tests performed in scanning electron microscope, rotational rheometer, dynamic mechanical analyzer, and tensile test machine. We observed that the films exhibited characteristic immiscible ''matrix-droplet'' or ''cocontinuous'' blend morphology, depending on the sample composition. Based on the melt rheology and dynamic mechanical analyzer tests, we found that poly(ethylene-co-vinyl acetate) addition changed the viscoelastic properties of cyclic olefin copolymer such as increasing short-term creep strain and relaxation time but reducing relaxation rate in solid state. One can conclude that such effects became more pronounced by adding a compatibilizer (PE-g-MA) at 50% of poly(ethylene-co-vinyl acetate) present in the composition. We also found that poly(ethylene-co-vinyl acetate) addition into cyclic olefin copolymer reduced the Young's modulus and yield stress and increased the strain at break for the blends.

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Film Processability, Morphology, and Properties of Polyamide-6/Low Density Polyethylene Blends

Cited by 12 publications

References 30 publications

Morphology, Rheology and Crystallization in Relation to the Viscosity Ratio of Polystyrene/Polypropylene Polymer Blends

Morphology, Rheology and Crystallization in Relation to the Viscosity Ratio of Polystyrene/Polypropylene Polymer Blends

Film processability and properties of polycaprolactone/thermoplastic starch blends

Investigation of morphological, rheological, and mechanical properties of cyclic olefin copolymer/poly(ethylene-co-vinyl acetate) blend films

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