Effects of compatibilization of oxidized polypropylene on PP blends of PP/PA6 and PP/talc

Abdouss, Majid; Sanjani, Naser Sharifi; Azizinejad, Fariborz; Shabani, Mohsen

doi:10.1002/app.20207

Cited by 16 publications

(8 citation statements)

References 20 publications

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“…It was interesting to find that the crystallization peaks of PA11 at high temperature (165.6°C) became weak, while those peaks at low temperature (≈100°C) turned into more apparent. This phenomenon was regarded as the typical confined crystallization, and it was common in immiscible polymer blends with dispersed phases, especially in the crystalline/amorphous immiscible polymer blends with "sea-island" structures such as PA6, iPP, LLDPE, and PEO [22][23][24]. It was also reported that PA11, as a dispersed phase, underwent supercooling during the cooling process.…”

Section: Melting and Crystallizationmentioning

confidence: 99%

Study on PLA/PA11 Bio-Based Toughening Melt-Blown Nonwovens

Zhu¹,

Yu²,

Su³

et al. 2020

Autex Research Journal

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With aim to improve the mechanical and thermal properties of poly (lactic acid) (PLA) melt-blown nonwovens (MBs), polyamide 11 (PA11) was melt blended with PLA at the weight proportions of PLA/PA11 (95/5, 90/10, 85/15, 80/20), and the corresponding PLA/PA11 MBs were also manufactured. The crystallization, thermal and rheological behaviors of PLA/PA11 blends were investigated. PLA/PA11 MBs were also characterized by morphology and mechanical properties. The results indicated that PA11, as globular dispersed phases, formed confined crystals and could improve the thermal stability of PLA matrix. The viscosity of PLA/PA11 blends was slightly increased but the rheological behaviors of “shear-thinning” kept unchanged in comparison with PLA. The average diameter of PLA/PA11 MB fibers was slightly increased, whereas the toughness of PLA/PA11 MBs including the strength and elongation were efficiently enhanced compared with those of PLA MBs.

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Section: Melting and Crystallizationmentioning

confidence: 99%

Study on PLA/PA11 Bio-Based Toughening Melt-Blown Nonwovens

Zhu¹,

Yu²,

Su³

et al. 2020

Autex Research Journal

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“…This increment in thermal resistance can be attributed to the reduction of the third type hydrogen and formation of carboxylate salts (COO-N+Me3Ph) in oxidized polypropylene (Abdouss et al 1999). Moreover, it is inferred from DTA diagram that the amount of the released heat from polypropylene is higher than oxidized polypropylene; in other words, oxidized polypropylene acts as an insulator preventing exodus energy emerging and finally produces less energy while burning (Abdouss et al 2004). …”

Section: Thermal Analysis Of Oxidized Polypropylenementioning

confidence: 99%

Effects of nano-clay particles and oxidized polypropylene polymers on improvement of the thermal properties of wood plastic composite

Nafchi

Abdouss

Najafi

et al. 2015

Maderas, Cienc. tecnol.

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In this study, the effects of oxidized polypropylene, as a compatibilizer, and Nano-clay particles in improving the thermal properties of wood plastic composites are investigated. For this purpose, polypropylene polymer was oxidized in the vicinity of the air oxygen for 2 hours. Then, in order to produce the samples, Nano-clay particles at three levels (0%, 2% and 4%) were mixed with wood fibers, polypropylene polymer and the compatibilizer. Finally, the samples with thickness of 2mm and dimensions of 15×15cm were made by using hot press. For more precise investigation, the morphology of wood plastic composites was studied by using X-rays diffraction and electronic microscope images. Thermal properties of the composites were evaluated through thermal and differential analyses. The results of the thermal tests demonstrated that the addition of oxidized polypropylene and Nano-clay particles significantly improve the thermal properties of wood plastic composites. Furthermore, increment of Nano-clay particles content additionally improves thermal stability of the composites and also reduces the released heat amount during the thermal degradation. In addition, TEM images showed that the dispersion of Nano-clay particles in the composite has an intercalation structure. This subject also verified by the X-rays diffraction and it is an evidence of better thermal stability of the achieved wood plastic composites.

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“…There are very few studies where a quite fine dispersion of the minor phase in the matrix can be achieved by using ionomers, polypropylene-grafted-acrylic acid, ethylene-butylene acrylate-grafted-fumaric acid, ethylene-ethyl acrylate-glycidyl methacrylate as compatibilizers [12][13][14]. Unfortunately, the MAH is toxic and of low boiling point, and it is difficult to prepare PP-g-MAH, which limits the application of PP-g-MAH as a compatibilizer for the immiscible blends such as PP/PA6.…”

Section: Introductionmentioning

confidence: 99%

Effects of polypropylene-g-dibutyl maleate on mechanical and rheological properties of PP/PA6 blends

Jia

2009

E-Polymers

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Abstract:The effects of polypropylene-grafted-dibutyl maleate (PP-g-DBM) used as compatibilizer on mechanical, rheological and morphological properties of polypropylene (PP) and nylon 6 (PA6) blends was systematically investigated in this paper. The results of Molau test, solvent extraction and differential scanning calorimetry (DSC) indicated the formation of PP-g-PA6 in vicinity of interfaces during melting extrusion. Owing to the reaction between the reactive groups of PPg-DBM and amine (-NH 2 ) end groups of PA6, the tensile and impact strength of the PP-g-DBM compatibilized PP/PA6 blends were much higher than that of the uncompatibilized PP/PA6 blends. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) results indicated that the domain sizes of the dispersed phase in the compatibilized PP/PA6 blends decreased and the interfaces become more indistinct, which indicated a clear compatibiliting effect was induced by the PP-g-DBM in the immiscible PP/PA6 blends, i.e. the PP-g-DBM was an effective compatibilizer for the PP/PA6 blends. In addition, the rheological measurements showed the PP-g-DBM compatibilized PP/PA6 blends possessed higher pseudo plasticity, melt viscosity and flow activation energy.

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Effects of compatibilization of oxidized polypropylene on PP blends of PP/PA6 and PP/talc

Cited by 16 publications

References 20 publications

Study on PLA/PA11 Bio-Based Toughening Melt-Blown Nonwovens

Study on PLA/PA11 Bio-Based Toughening Melt-Blown Nonwovens

Effects of nano-clay particles and oxidized polypropylene polymers on improvement of the thermal properties of wood plastic composite

Effects of polypropylene-g-dibutyl maleate on mechanical and rheological properties of PP/PA6 blends

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