Comparison of maleic anhydride‐grafted poly(propylene) with maleic anhydride‐grafted polystyrene‐block‐poly(ethene‐co‐but‐1‐ene)‐block‐polystyrene as blend compatibilizers of poly(propylene)/polyamide‐6 blends

Rösch, Joachim; Mülhaupt, Rolf

doi:10.1002/marc.1993.030140808

Cited by 57 publications

(24 citation statements)

References 5 publications

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“…Similar effects, that is, improvement in toughness at the expense of strength and stiffness with SEBS-and PE-based compatibilizers, but not with PP-based ones, have been observed in earlier studies, also. 4,5,15 For the PE/PA6 blends, Charpy impact strength for both unnotched and notched specimens increased considerably due to compatibilization, as shown in Figures 4 and 5. The unnotched specimens did not fail at all, and the notched ones were only partially broken when SEBS-g-OXA or PE c -g-OXA was used.…”

Section: Mechanical Propertiesmentioning

confidence: 81%

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Use of oxazoline functionalized polyolefins and elastomers as compatibilizers for thermoplastic blends

Vocke¹,

Anttila²,

Heino³

et al. 1998

J. Appl. Polym. Sci.

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Oxazoline functionalized polypropylene, polyethylene, ethylene propylene copolymer (E/P), and styrene ethylene/butylene styrene copolymer (SEBS) were studied as compatibilizers in blends of polyolefins with polyesters and polyamides. The blends investigated were polypropylene/polyamide 6, polypropylene/polybutylene terephtalate, and polyethylene/polyamide 6, with engineering thermoplastic contents of 30 wt %. The blends were prepared in a twin-screw midiextruder, and injection molded with a mini-injection molding machine. The effect of compatibilizing on the morphology and mechanical properties of the blends was of interest. Compatibilization substantially improved the toughness of all tested blends. Their strength and stiffness remained at the level of the binary blends when polypropylene or polyethylene based compatibilizers were used, but slightly decreased with other compatibilizers. Morphological studies showed that the particle size was reduced, and the adhesion of the dispersed phase to the matrix improved by compatibilization. The effect of unfunctionalized polyethylene, polypropylene, E/P, and SEBS was also studied to compare the compatibilizers with them.

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Section: Mechanical Propertiesmentioning

confidence: 81%

“…SEBS, ungrafted or grafted, has also been found to be an effective impact modifier in these blends. [3][4][5] Compatibilization of binary blends by reactive extrusion has been studied by several research groups. 6,7 The most frequently used functional monomers in free radical grafting are maleic anhydride and glycidyl methacrylate.…”

Section: Introductionmentioning

confidence: 99%

Use of oxazoline functionalized polyolefins and elastomers as compatibilizers for thermoplastic blends

Vocke¹,

Anttila²,

Heino³

et al. 1998

J. Appl. Polym. Sci.

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“…6-10 Many studies have demonstrated that maleated rubbers such as styrene-ethylene/butylene-styrene triblock copolymers (SEBS-g-MA), [11][12][13][14][15][16][17][18][19] ethylene propylene random copolymer (EPR-g-MA)…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, much effort has been particularly devoted to the compatibilization of these blends. Functionalized polypropylenes, such as maleic anhydride (MA) grafted PP, are effective compatibilizer for these blends.1-5 However, high levels of toughness can only be achieved by addition of an appropriate rubber that can function as an impact modifier.6-10 Many studies have demonstrated that maleated rubbers such as styrene-ethylene/butylene-styrene triblock copolymers (SEBS-g-MA), [11][12][13][14][15][16][17][18][19] ethylene propylene random copolymer (EPR-g-MA)13-15 and poly(octene-ethylene) (POE-g-MA)20 can effectively act as both impact modifier and compatibilizer for PP/PA6 blends.We have developed a maleic anhydride grafted thermoplastic elastomer (TPEg) and successfully used it as an impact modifier of polyamide-6 (PA6) 21,22 and the amorphous copolyester (PETG). [23][24][25] This thermoplastic elastomer is a mixture of poly(octene-ethylene) (POE) and semicrystalline polyolefin.…”

mentioning

confidence: 99%

“…[1][2][3][4][5] However, high levels of toughness can only be achieved by addition of an appropriate rubber that can function as an impact modifier. [6][7][8][9][10] Many studies have demonstrated that maleated rubbers such as styrene-ethylene/butylene-styrene triblock copolymers (SEBS-g-MA), [11][12][13][14][15][16][17][18][19] ethylene propylene random copolymer (EPR-g-MA) [13][14][15] and poly(octene-ethylene) (POE-g-MA) 20 can effectively act as both impact modifier and compatibilizer for PP/PA6 blends.…”

mentioning

confidence: 99%

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Dynamic Rheological Properties of Polypropylene/Polyamide-6 Blends Modified with a Maleated Thermoplastic Elastomer

Liu

Xie

et al. 2004

Polym J

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ABSTRACT:The effects of added maleated thermoplastic elastomer (TPEg) on rheological properties and morphologies of polypropylene (PP)/polyamide-6 (PA6) blends are examined. For comparison, non-maleated version (TPE) is also added to the above binary blends. The magnitude of complex viscosity and viscoelastic moduli of PP/ PA6/TPE blends gradually decrease with the content of TPE. However, for PP/PA6/TPEg blends, these above parameters increase dramatically with increasing content of reactive TPEg and shear-thinning behavior becomes more obvious. SEM micrographs show that the addition of TPEg effectively increases compatibility between PP and PA6 and results in a considerable decrease in the domain size of dispersed phase; whereas the ternary blends containing nonreactive TPE exhibit a typical characteristic of immiscible blends with a very coarse morphology. TEM results further reveal that for PP/PA6/TPEg blends, a core-shell structure consisting of PA6 particles encapsulated with POE are probably formed in PP matrix. [DOI 10.1295/polymj.36.754] KEY WORDS Polypropylene (PP) / Polyamide-6 / Rheological / Morphology / Interfacial / Adhesion / In recent decades, polypropylene/polyamide (PP/ PA) blends have received much attention because they combine the insensitivity to humid environments and easy processing of the former with the thermomechanical characteristics of the latter. Unfortunately; they are incompatible polymer pairs because of their different polarities and crystalline morphology. Therefore, much effort has been particularly devoted to the compatibilization of these blends. Functionalized polypropylenes, such as maleic anhydride (MA) grafted PP, are effective compatibilizer for these blends.1-5 However, high levels of toughness can only be achieved by addition of an appropriate rubber that can function as an impact modifier.6-10 Many studies have demonstrated that maleated rubbers such as styrene-ethylene/butylene-styrene triblock copolymers (SEBS-g-MA), [11][12][13][14][15][16][17][18][19] ethylene propylene random copolymer (EPR-g-MA)13-15 and poly(octene-ethylene) (POE-g-MA)20 can effectively act as both impact modifier and compatibilizer for PP/PA6 blends.We have developed a maleic anhydride grafted thermoplastic elastomer (TPEg) and successfully used it as an impact modifier of polyamide-6 (PA6) 21,22 and the amorphous copolyester (PETG). [23][24][25] This thermoplastic elastomer is a mixture of poly(octene-ethylene) (POE) and semicrystalline polyolefin. Compared with widely used maleated rubbers such as SEBS and EPR, it possesses the following advantages: lower cost, finer dispersion, better processability, and compatibility with the PP matrix because of the incorporation of 40 wt % polyolefin plastics with a low melt viscosity into POE rubber.In a previous work, TPEg was employed to compatibilize and toughen PP/PA6 blends. 26 The addition of TPEg not only improved compatibility between PP matrix and PA6, resulting in a fine dispersion of PA6 in the PP matrix, but also significantly enhanced t...

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Rheological properties, crystallization, and morphology of compatibilized blends of isotactic polypropylene and polyamide

Marco

Ellis

Gómez

et al. 1997

J. Appl. Polym. Sci.

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Blends of isotactic polypropylene (iPP) with the polyamide nylon-6 (N6), prepared by extrusion, were studied with a composition of up to 30% by weight polyamide. In the case of a 70/30 iPP/N6 blend, the influence of a compatibilizing agent based on polypropylene functionalized with maleic anhydride (PP-g-MA), with compositions of 1, 3, 5, and 10% by weight in polypropylene, was followed. The influence of the concentration of N6 and the compatibilizing agent on the rheological and thermal properties, and the morphology of the blends, was analyzed by monitoring the melt viscosity at different shear rates, differential scanning calorimetry, and polarized light microscopy. Vibrational spectroscopy was used to characterize the blends and to study the effect of the compatibilizing agent. The viscosity-composition curves for the iPP/ N6 blends, in the composition and shear rate ranges analyzed, show a negative deviation from the additive rule, while the opposite trend is observed for the blends compatibilized with PP-g-MA. Important variations in the spectroscopic behavior was observed between compatibilized and noncompatibilized blends, which varied as a function of the compatibilizing agent concentration. The crystallization rates of iPP in the iPP/N6 blends, under both dynamic and isothermal conditions, are much greater than are those observed for pure iPP and are directly related to the nucleating activity of the polyamide. This effect is much smaller in the presence of the compatibilizing agent. The isothermal crystallization of the polyamide N6 in compatibilized blends is affected by the presence of iPP, reducing the crystallization rate due to the diluent effect of the polypropylene. de la Cierva 3, 28006-Madrid, Spain. Contract grant sponsor: Spanish Ministerio de Educación polymers is an inmiscible system composed of two y Ciencia. phases, where the component with higher concen-

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Comparison of maleic anhydride‐grafted poly(propylene) with maleic anhydride‐grafted polystyrene‐block‐poly(ethene‐co‐but‐1‐ene)‐block‐polystyrene as blend compatibilizers of poly(propylene)/polyamide‐6 blends

Cited by 57 publications

References 5 publications

Use of oxazoline functionalized polyolefins and elastomers as compatibilizers for thermoplastic blends

Use of oxazoline functionalized polyolefins and elastomers as compatibilizers for thermoplastic blends

Dynamic Rheological Properties of Polypropylene/Polyamide-6 Blends Modified with a Maleated Thermoplastic Elastomer

Rheological properties, crystallization, and morphology of compatibilized blends of isotactic polypropylene and polyamide

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