Crystallization kinetics of polypropylene-polyamide compatibilized blends

Campoy, I.; Arribas, J. M. Fernandez-tenllado; Zaporta, M.A.M.; Marco, Carlos; Gómez, M. A.; Fatou, J. G.

doi:10.1016/0014-3057(94)00185-5

Cited by 66 publications

(52 citation statements)

References 21 publications

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“…It can be seen that the addition PPgMAH in the blends decreased the T c of PP, which indicates slowing of PP crystallization. A similar observation was reported by Lee and Yang [8] and Campoy 1995 et al [23] on PP=PA6 compatibilized by various content of PPgMAH. The decrease was attributed to the hindrance arising from the formation of graft copolymer.…”

Section: Thermal Analysissupporting

confidence: 82%

Effect of Compatibilizer Type on Properties of 70:30 Polyamide 6/Polypropylene/MMT Nanocomposites

Othman

Hassan

Rahmat

et al. 2007

International Journal of Polymeric Materials

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PA6=PP nanocomposites with either polyethylene octene elastomer grafted maleic anhydride (POEgMAH) or PP grafted maleic anhydride (PPgMAH) as compatibilizer were prepared using co-rotating twin-screw extruder followed by injection molding. The mechanical and microstructural properties of the composites were investigated by means of tensile, flexural, and impact testing and by scanning electron microscopy (SEM). X-ray diffraction (XRD) was used to characterize the formation of nanocomposites. The result indicated that the miscibility of PA6=PP nanocomposites was improved with the addition of POEgMAH and PPgMAH. The impact strength of PA6=PP nanocomposite with POEgMAH increased about 5 times higher than uncompatibilized composite. Increment in tensile properties was observed when PPgMAH was used as compatibilizer. XRD results revealed that PA6=PP nanocomposites were successfully formed. Uniform dispersion of PP in matrix were observed through SEM, which showed the improvement of the compatibility between polymers.

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Section: Thermal Analysissupporting

confidence: 82%

Effect of Compatibilizer Type on Properties of 70:30 Polyamide 6/Polypropylene/MMT Nanocomposites

Othman

Hassan

Rahmat

et al. 2007

International Journal of Polymeric Materials

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“…The above shift in the T c of the PP matrix to a higher temperature has been ascribed to the nucleating effect of the crystallized PA6 component in the blend, as described elsewhere. 13,14,19 It is interesting that PA6 component in the noncompatibilized PP/PA6 blend exhibits a higher crystallization temperature (above 18.6 C or so, compared to the virgin PA6). This results is quite similar to the behavior on the PA6 homopolymer found by Khanna et al 20,21 and has been explained by a more ordered molecular arrangement that persists in the molten state due to the stabilizing effect of hydrogen bonding after melt extrusion of PA6.…”

Section: Differential Scanning Calorimetry (Dsc)mentioning

confidence: 99%

Crystallization Behaviors of Polypropylene/Polyamide-6 Blends Modified by a Maleated Thermoplastic Elastomer

Liu

Xie²,

Zhang

et al. 2006

Polym J

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ABSTRACT:In this paper, with the maleated thermoplastic elastomer (TPEg) as a compatibilizer of polypropylene (PP)/polyamide-6 (PA6) blends, the effects of interfacial compatibilization on the crystallization behaviors of the blends were investigated by differential scanning calorimetry (DSC). Compared with the binary blend, the addition of TPEg significantly affected the crystallization behaviors of the individual component in the blends, especially those of PA6. The presence of TPEg weakened the nucleating role of the PA6 on the PP matrix. The increasing concentration of the compatibilizer caused a decrease in crystallization temperature (T c ) and crystallization enthalpy (ÁH c ) associated with PA6. When TPEg amount was added up to 24 wt %, the crystallization of PA6 at its bulk T c was almost completely suppressed and the complete concurrent crystallization of PA6 and PP matrix took place. In the case of PP/PA6/TPEg blend containing 24 wt % TPEg, it was found that the disappearance of bulk PA6 crystallization peak was independent of the cooling rate and annealing time, but can be introduced by self-nucleation experiments. The above fractionated crystallization phenomenon was attributed to the reduction in PA6 particle size due to compatibilization role of added TPEg, which leads to the lack of the active heterogeneities. The crystalline morphologies under isothermal conditions were also observed by polarized optical microscopy (POM). [DOI 10.1295/polymj.38.21] KEY WORDS Polypropylene (PP) / Polyamide-6 / Crystallization / Compatibilization / Morphology / Compatibilization strongly affects the blend phase morphology and as such, it may also influence the crystallization behaviors of the blend. Both morphology and crystallization behaviors are closely related with the final properties of the blend, a profound understanding of the crystallization behavior and the resulting semicrystalline structure in polymer blends is necessary for effective manipulation and control of their properties from both scientific and industrial point of view. However, the general influence of a compatibilizer on the crystallization behavior of an immiscible polymer blend system is still far from being well understood, especially for crystalline polymer/crystalline polymer.

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“…Because of the enormous opportunities that abound in the area of polymer composite (including blends), many researchers are focusing on this approach to achieve the development of novel materials for current and future applications. Several authors have reported the process and resulting excellent properties of compatibilized blends 1–7. Further to this, it has been discovered that the inclusion of nanoscale inorganic materials in an organic polymeric medium, creates a more synergistically integrated material.…”

Section: Introductionmentioning

confidence: 99%

Morphology and Thermal Properties of Compatibilized PA12/PP Blends with Boehmite Alumina Nanofiller Inclusions

Ogunniran

Sadiku

Ray

et al. 2011

Macro Materials & Eng

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Boehmite alumina nanoparticles are added to PP‐g‐MAH‐compatibilized blends of PA 12 and PP to study the effects of nanoparticle loading in the resulting composites. WAXD and SEM data suggest that the nanoparticles enhanced the coalescence of PP. DSC, DMA, and TGA reveal that the final properties such as crystallization temperature, flexural storage modulus, thermal degradation temperature, etc., improve with increasing nanoparticle loading for blend/based composites. FTIR results show that the nanoparticles interfere with the interfacial activity at 5 wt% nanoparticle loading. All results are compared between the neat polymers and the compatibilized blend and show that despite a slight increase in dispersed‐phase domain size, all other properties improve with the addition of AlO(OH).

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Crystallization kinetics of polypropylene-polyamide compatibilized blends

Cited by 66 publications

References 21 publications

Effect of Compatibilizer Type on Properties of 70:30 Polyamide 6/Polypropylene/MMT Nanocomposites

Effect of Compatibilizer Type on Properties of 70:30 Polyamide 6/Polypropylene/MMT Nanocomposites

Crystallization Behaviors of Polypropylene/Polyamide-6 Blends Modified by a Maleated Thermoplastic Elastomer

Morphology and Thermal Properties of Compatibilized PA12/PP Blends with Boehmite Alumina Nanofiller Inclusions

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