Phase structure in polypropylene/PA6/SEBS blends

Wilkinson, Andrew; Laugel, L.; Clemens, M; Harding, V.M.; Marin, Minodora

doi:10.1016/s0032-3861(98)00843-x

Cited by 82 publications

(65 citation statements)

References 7 publications

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“…The size of the dispersed PA6 particles increases with the PA6 content and the distribution is broad; there is no evidence in adhesion between the two phases. This behaviour agrees with the studies of Wilkinson et al 15 and Sacchii et al 1 With the addition of the compatibilizer PPgMA (Fig. 2), the particles of the dispersed phase in the compatibilized blend, in comparison with the uncompatibilized blend, seem to be firmly embedded in the matrix and the dispersed phase boundaries become unclear, as shown in Figure 2(a,b).…”

Section: Tensile Propertiessupporting

confidence: 91%

“…The dispersed phase is unstable due to the coalescence of spheres during melt processing and consequently forms a coarse morphology. 15 There is also evidence of poor interfacial bonding in this system, with particles of PA6 pulled from the PP matrix lying loose on the fracture surface and with some microvoids observed around PA6 nodules. The size of the dispersed PA6 particles increases with the PA6 content and the distribution is broad; there is no evidence in adhesion between the two phases.…”

Section: Tensile Propertiesmentioning

confidence: 84%

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Blending PP with PA6 industrial wastes: Effect of the composition and the compatibilization

Jaziri

Barhoumi²,

Massardier

et al. 2007

J of Applied Polymer Sci

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Blending polypropylene to recycled PA6 industrial wastes at different compositions, with and without compatibilizer PPgMA was produced in a corotating twin screw extruder where, polypropylene acts as the polymer matrix and polyamide as the dispersed phase. Several techniques were used to investigate the morphology, thermal, viscoelastic and tensile properties of these blend. Binary PP/PA6 blends showed the presence of PA6 particles dispersed in the PP continuous phase and exhibited a coarse morphology. Increasing PA6 contents in the blend increased their crystallinity and their size and improved the tensile properties at weak deformation. In addition to compatibilizer PPgMA, the morphology shows lower diameters and a decrease in size of the dispersed PA6 particles. The interfacial adhesion was also improved, as a result of the creation of an interphase that was formed by the interaction between the formed PPgPA6 copolymer in situ and both phases. This interphase induced an improvement in tensile properties. The PPgPA6 copolymer generated by the interphase was identified with DMA analysis thanks to an additional transition in loss modulus curves.

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Section: Tensile Propertiessupporting

confidence: 91%

Section: Tensile Propertiesmentioning

confidence: 84%

Blending PP with PA6 industrial wastes: Effect of the composition and the compatibilization

Jaziri

Barhoumi²,

Massardier

et al. 2007

J of Applied Polymer 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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Polymer Blends

2017

Polymer Blends and Composites

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Phase structure in polypropylene/PA6/SEBS blends

Cited by 82 publications

References 7 publications

Blending PP with PA6 industrial wastes: Effect of the composition and the compatibilization

Blending PP with PA6 industrial wastes: Effect of the composition and the compatibilization

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

Polymer Blends

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