Structure and properties of compatibilized blends of polyamide‐6 and ABS

Misra, Ashok; Sawhney, G.; Kumar, R.

doi:10.1002/app.1993.070500708

Cited by 57 publications

(25 citation statements)

References 9 publications

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“…[7][8][9][10] This reaction is expected to take place fast and results in imide linkage formation, as shown in Figure 1. Usually, this imide linkage is formed at the polyamide blend interface, thereby leading to adequate blend compatibilization.…”

Section: Introductionmentioning

confidence: 94%

Effects of addition of acrylic compatibilizer on the morphology and mechanical behavior of amorphous polyamide/SAN blends

Becker

Hage

Pessan

2009

J of Applied Polymer Sci

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Amorphous polyamide (aPA)/acrylonitrilestyrene copolymer (SAN) blends were prepared using methyl methacrylate-maleic anhydride copolymer MMA-MA as compatibilizer. The aPA/SAN blends can be considered as a less complex version of the aPA/ABS (acrylonitrilebutadiene-styrene) blends, due to the absence of the ABS rubber phase in the SAN material. It is known that acrylic copolymer might be miscible with SAN, whereas the maleic anhydride groups from MMA-MA can react in situ with the amine end groups of aPA during melt blending. As a result, it is possible the in situ formation of aPA-g-MMA-MA grafted copolymers at the aPA/ SAN interface during the melt processing of the blends. In this study, the MA content in the MMA-MA copolymer and its molecular weight was varied independently and their effects on the blend morphology and stress-strain behavior were evaluated. The morphology of the blends aPA/SAN showed a minimum in the SAN particle size at low amounts of MA in the compatibilizer, however, as the MA content in the MMA-MA copolymer was increased larger SAN particle sizes were observed in the systems. In addition, higher MA content in the compatibilizer lead to less ductile aPA/SAN blends under tensile testing. The results shown the viscosity ratio also plays a very important role in the morphology formation and consequently on the properties of the aPA/SAN blends studied.

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Section: Introductionmentioning

confidence: 94%

Effects of addition of acrylic compatibilizer on the morphology and mechanical behavior of amorphous polyamide/SAN blends

Becker

Hage

Pessan

2009

J of Applied Polymer Sci

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“…Aoki et al reported tile morphological, thermal, and rheological properties of the ABS and PA blends [ 18]. Misra et al used styrene maleic anhydride-acrylonitrile (SMA) copolymer as reactive compatibilizer for the ABS and PA blends [19]. It is interesting to notice that essentially all of the above mentioned literature used nylon 6 (N6) in their ABS and PA blends, none involved nylon 6,6 (N66).…”

Section: Introductionmentioning

confidence: 96%

“…Polymer blends of ABS and PA have attracted great interest lately from both industries and academia [7][8][9][10][11][12][13][14][15][16][17][18][19]. Synergetic ABS/PA blends of ABS and PA have been reported by two major manufactures but they did not mention the detailed compositions [8,9].…”

Section: Introductionmentioning

confidence: 99%

Reactive compatibilization of ABS/Nylon 6,6 blends: Effects of reactive group concentration and blending sequence

Chang

1994

J Polym Res

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Styrene-acrylonitrile-glycidyl methacrylate (SAG) copolymers with various glycidyl methacrylate (GMA) contents have been used to compatibilize the incompatible blends of acrylonitrile-butadiene-styrene (ABS) and nylon 6,6 (N66) by varying the blending sequences. When the epoxy group of SAG copolymer makes contact and reacts with the amine endgroup of N66, the resultant grafted products, SAG-g-N66, tend to reside at interface and act as compatibilizers of the blends. For a SAG copolymer with lower GMA content (SG2), a better compatibilized blend is achieved by sequential blending of the SAG2 with N66 then with ABS. When a higher GMA content SAG (SAG 10) is employed, on the contrary, a better compatibilized blend is obtained by preblending SAG10 with ABS then with N66. A grafted SAG-g-N66 molecule is considered as an effective compatibilizer when it anchors along the interface with the ungrafted SAG, or the SA segments, penetrating into the ABS phase while the branched N66 chains protruding into the N66 phase. The conventional one-step three-component blending usually results in less compatibilized blend than the properly selected sequential blending. The trend of mechanical properties observed closely match the compatibility of the blend in terms of domain size. However, the overall improvement of the resultant mechanical properties of the compatibilized blend over the uncompatibilized one is not substantial.

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“…A incorporação do copolímero ABS pode melhorar a resistência ao impacto sob entalhe da PA6, pois sua fase elastomérica, à base de polibutadieno (PB), apresenta um enorme potencial para aumentar a tenacidade da mistura final, bem como, diminuir a elevada absorção de umidade da PA [3][4][5][6][7][8][9][10][11] . Entretanto, como essa mistura é imiscível e incompatível, faz-se necessário o desenvolvimento de compatibilizantes capazes de reagir com os grupos terminais da PA6 e que sejam miscíveis com a fase estireno-acrilonitrila (SAN) do copolímero ABS, na interface PA6-SAN [2,5,12,13] . Recentemente, foi mostrada a influência de dois compatibilizantes, os copolímeros metacrilato de metila-metacrilato de glicidila (MMA-GMA) e metacrilato de metila-anidrido maléico (MMA-MA), nas propriedades reológicas e mecânicas da blenda PA6/ABS [11] .…”

Section: Introductionunclassified

Compatibilização de blendas de poliamida 6/ABS usando os copolímeros acrílicos reativos MMA-GMA e MMA-MA. Parte 2: Comportamento termomecânico e morfológico das blendas

2004

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Resumo: Blendas poliméricas de poliamida 6 (PA6) com acrilonitrila-butadieno-estireno (ABS) foram preparadas em extrusora de rosca dupla, utilizando-se os copolímeros metacrilato de metila -metacrilato de glicidila (MMA-GMA) e metacrilato de metila-anidrido maléico (MMA-MA) como agentes de compatibilização. O ABS, por si só, não foi capaz de tenacificar a PA6, apresentando uma morfologia de fases com grandes e pequenos aglomerados na matriz PA6. A introdução do copolímero MMA-GMA, como compatibilizante do sistema, não melhorou significativamente as propriedades de impacto da blenda PA6/ ABS. As fotomicrografias obtidas por microscopia eletrônica de transmissão (MET) indicaram uma morfologia com duas populações distintas de ABS: aglomerados e pequenas partículas dispersas, resultando em uma distribuição não-uniforme de domínios de ABS. A blenda compatibilizada com MMA-MA foi supertenaz (> 800 J/m) na temperatura ambiente e em baixas temperaturas (~ -10 °C), com baixas concentrações de compatibilizante e baixos teores de MA no copolímero. As blendas PA6/ ABS compatibilizadas com MMA-MA apresentaram uma morfologia de partículas bem dispersas e adequadamente distribuí-das na matriz, evidenciando a presença efetiva do copolímero como agente de compatibilização reativo deste sistema. Abstract: Blends of Polyamide 6 (PA6) with acrylonitrile-butadiene-styrene (ABS) were prepared in a corotating twin-screw extruder, using the poly(methyl methacrylate-co-glycidyl methacrylate) (MMA-GMA) and poly(methyl methacrylate-comaleic anhydride) (MMA-MA) copolymers as compatibilizing agents. The ABS by itself was not capable to toughen PA6 and showed a phase morphology with large and small agglomerates in the PA6 matrix. The introduction of MMA-GMA copolymer as a compatibilizing agent in the system did not significantly improve the impact properties of PA6/ABS blend. Transmission electron microscope (TEM) photomicrographs indicated a morphology with two distinct populations of ABS: agglomerates and small dispersed particles resulting in a non-uniform distribution of ABS domains. The compatibilized blend with MMA-MA was super-tough (> 800 J/m) at room temperature and low temperature (~ -10 °C) with small amounts of MA in the copolymer and small amounts of compatibilizer in the blend. The PA6/ABS compatibilized blends with MMA-MA showed a morphology of well dispersed and distributed rubber particles in PA6 matrix, thus demonstrating the effective presence of the copolymer as a compatibilizing reactive agent of this system. Palavras Keywords: Morphology, toughness, polyamide, ABS.tivo para aplicações de engenharia. No entanto, a sua sensibilidade à propagação de trinca, alta absorção de umidade, estabilidade dimensional pobre, temperaturas de deflexão térmica relativamente baixas e fragilidade em temperaturas sub-ambientes tornam seu uso restrito a algumas

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Structure and properties of compatibilized blends of polyamide‐6 and ABS

Cited by 57 publications

References 9 publications

Effects of addition of acrylic compatibilizer on the morphology and mechanical behavior of amorphous polyamide/SAN blends

Effects of addition of acrylic compatibilizer on the morphology and mechanical behavior of amorphous polyamide/SAN blends

Reactive compatibilization of ABS/Nylon 6,6 blends: Effects of reactive group concentration and blending sequence

Compatibilização de blendas de poliamida 6/ABS usando os copolímeros acrílicos reativos MMA-GMA e MMA-MA. Parte 2: Comportamento termomecânico e morfológico das blendas

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