Influence of microstructure and flexibility of maleated styrene-b-(ethylene-co-butylene)-b-styrene rubber on the mechanical properties of polyamide 12

Rinawa, Khushboo; Maiti, Sukumar; Sonnier, Rodolphe; Cuesta, J. M. Lopez

doi:10.1007/s00289-014-1115-4

Cited by 11 publications

(15 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…5. A peak around 20 wt% of SEBS-g-MA in the curve at high frequency ([10 rad/s) indicated presence of microstructure changes in the blend [29]. This could be attributed to the graft reaction which significantly influenced the external stimulation.…”

Section: Complex Viscosity (G*)mentioning

confidence: 86%

“…6a). This could be because of the morphological changes associated with different composition of the blends and relatively low graft ratio [29]. Figure 6a shows a straight line for N12, NS10, and NS20 blends whereas the variation of NS50 quite resembles the shape of SEBS-g-MA curve.…”

Section: Cole-cole Plot Of Modulus and Crossover Frequencymentioning

confidence: 89%

“…This caused decrease in the globule size of the dispersed phase shown in Ref. [29]. Figure 6a presents Han plots (Cole-Cole plot of modulus) for PA12, SEBS-g-MA, and the blends.…”

Section: Cole-cole Plot Of Modulus and Crossover Frequencymentioning

confidence: 95%

“…From the interaction parameter, the blends appear immiscible, in particular, in view of the large differences between the solubility parameters of the components. However, an extent of physical interaction through hydrogen bonding and polar interactions through amide end groups of PA12 and carboxylic groups of SEBS-g-MA is possible [29]. This caused decrease in the globule size of the dispersed phase shown in Ref.…”

Section: Cole-cole Plot Of Modulus and Crossover Frequencymentioning

confidence: 95%

“…PA12-g-SEBS in the blend as well as due to the high viscosity of the SEBS-g-MA itself. It can be noted that the viscosity increase in NS20 is more as compared to NS10 which may be attributed to sufficient amount of grafted MA to react with polar group of PA12 which hindered the melt flow of polymer to a larger extent [29].…”

Section: Complex Viscosity (G*)mentioning

confidence: 99%

See 4 more Smart Citations

Dynamic rheological studies and applicability of time–temperature superposition principle for PA12/SEBS-g-MA blends

et al. 2015

Self Cite

View full text Add to dashboard Cite

The viscoelastic behaviour of PA12/SEBS-g-MA blends was studied. Time sweep, amplitude sweep, and frequency sweep tests were analysed by the use of parallel-plate rheometer. Time sweep test shows time-independent viscoelastic behaviour of the polymer and blends during the entire duration of test. The critical shear strain was higher for PA12 as compared to that of SEBS-g-MA and the blends in amplitude sweep test. However, the plateau modulus was higher for SEBS-g-MA as compared to PA12. The complex viscosity, dynamic storage, and loss moduli of PA12 increased with the addition of SEBS-g-MA as a consequence of phase interaction between them. The influence of phase morphology of blend composition on their rheological properties was also examined. The blend showed a transformation from liquid-like to solid-like behaviour. The decrease in viscosity for PA12 and blends was observed with increasing temperature. The van Gurp plots was successfully used to validate time-temperature superposition principle (TTS) for PA12, SEBS-g-MA and blend compositions. PA12 holds TTS with a horizontal shift factor that fits Arrhenius equation. Whereas TTS fails for SEBS-g-MA and the blends studied because of different temperature-sensitive response and microstructural changes of melt during shear application.

show abstract

Section: Complex Viscosity (G*)mentioning

confidence: 86%

Section: Cole-cole Plot Of Modulus and Crossover Frequencymentioning

confidence: 89%

“…This caused decrease in the globule size of the dispersed phase shown in Ref. [29]. Figure 6a presents Han plots (Cole-Cole plot of modulus) for PA12, SEBS-g-MA, and the blends.…”

Section: Cole-cole Plot Of Modulus and Crossover Frequencymentioning

confidence: 95%

Section: Cole-cole Plot Of Modulus and Crossover Frequencymentioning

confidence: 95%

Section: Complex Viscosity (G*)mentioning

confidence: 99%

See 3 more Smart Citations

Dynamic rheological studies and applicability of time–temperature superposition principle for PA12/SEBS-g-MA blends

et al. 2015

Self Cite

View full text Add to dashboard Cite

show abstract

Toward Largely Enhanced Toughness and Balanced Strength in PA1012/EPDM Blends via Synergistic Effect of Sacrificial Bonds and Network Structure

Sun

Wang

et al. 2021

Macro Materials & Eng

View full text Add to dashboard Cite

Here, zinc‐neutralized ethylene propylene diene monomer (EPDM) ionomers with different neutralization levels are prepared through melt blending, and are then incorporated with polyamide 1012 (PA1012) to fabricate PA1012/EPDM ionomer blends. Interestingly, complex crosslinking networks are formed in the blends due to the construction of sacrificial bonds (Zn2+‐carboxyl, Zn2+‐amide). The as‐formed network structure and sacrificial bond endow the PA/EPDM blends with largely enhanced toughness (16 times higher than that of neat PA), as well as balanced strength and stiffness. Meanwhile, the rheological behaviors of PA1012/EPDM ionomer blends indicate their relative low melting viscosity, which can avoid the processing shortcomings of plastics toughened with rubber. Moreover, PA1012/EPDM ionomer blends show obvious gelation behavior, and a maximum notched Izod impact strength exhibited at the gel point, in which unique double network structure can be observed obviously, indicating that there is a corresponding correlation between the rheological and mechanical parameters. Furthermore, the supper‐toughening mechanism of PA1012/EPDM ionomer blends at gel point is explored, which origins from the large deformation and cavitation of rubber particles and the destruction of special double network morphologies. This study provides a novel and effective strategy to fabricate PA materials with outstanding toughness and excellent strength simultaneously.

show abstract

Tuning the performance of PA6/EPDM‐MA nanocomposites reinforced with Ni_0.₅Zn₀_.₅Fe₂O₄. Effect of the mixing protocol on mechanical, thermal, thermomechanical, magnetic, and morphological behavior

et al. 2022

View full text Add to dashboard Cite

The mixing protocol effect was investigated in nanocomposites based on polyamide 6 (PA6) and maleic anhydride grafted ethylene-propylene-diene (EPDM-MA), using Ni-Zn ferrite as filler. The nanocomposites were processed using an internal mixer and specimens were injection molded. Compounds properties were investigated through Izod impact strength, tensile strength, x-ray diffraction (XRD), magnetic measurements, differential scanning calorimetry (DSC), thermogravimetry (TG), heat deflection temperature (HDT), and scanning electron microscopy (SEM). PA6/EPDM-MA mixture showed super-tough behavior, with an increase of around 918% in impact strength, compared with PA6. However, there was a loss close to 50% in the elastic modulus and 5% in HDT, due to the high flexibility. In view of this, this mixture was selected for the production of nanocomposites toughened with Ni-Zn ferrite, using three mixing sequences. When the nanocomposite was processed by the simultaneous mixing of all components (PA6/EPDM-MA/Ni-Zn), the highest impact strength (458 J/m) was reached, corresponding to a gain of 486%, compared with PA6. On the other hand, when Ni-Zn ferrite and PA6 were initially premixed by melting, before EPDM-MA addition in a second processing step, HDT and impact strength properties increased by 6% and 281%, in relation to PA6. In addition, the nanocomposites showed magnetic responses, with a soft material behavior, that is, they magnetize and demagnetize easily. In general, toughened and magnetic nanocomposites were produced, with good mechanical and thermal properties, displaying potential to produce magnetic films.

show abstract

Influence of microstructure and flexibility of maleated styrene-b-(ethylene-co-butylene)-b-styrene rubber on the mechanical properties of polyamide 12

Cited by 11 publications

References 43 publications

Dynamic rheological studies and applicability of time–temperature superposition principle for PA12/SEBS-g-MA blends

Dynamic rheological studies and applicability of time–temperature superposition principle for PA12/SEBS-g-MA blends

Toward Largely Enhanced Toughness and Balanced Strength in PA1012/EPDM Blends via Synergistic Effect of Sacrificial Bonds and Network Structure

Tuning the performance of PA6/EPDM‐MA nanocomposites reinforced with Ni_0.₅Zn₀_.₅Fe₂O₄. Effect of the mixing protocol on mechanical, thermal, thermomechanical, magnetic, and morphological behavior

Contact Info

Product

Resources

About

Influence of microstructure and flexibility of maleated styrene-b-(ethylene-co-butylene)-b-styrene rubber on the mechanical properties of polyamide 12

Cited by 11 publications

References 43 publications

Dynamic rheological studies and applicability of time–temperature superposition principle for PA12/SEBS-g-MA blends

Dynamic rheological studies and applicability of time–temperature superposition principle for PA12/SEBS-g-MA blends

Toward Largely Enhanced Toughness and Balanced Strength in PA1012/EPDM Blends via Synergistic Effect of Sacrificial Bonds and Network Structure

Tuning the performance of PA6/EPDM‐MA nanocomposites reinforced with Ni0.5Zn0.5Fe2O4. Effect of the mixing protocol on mechanical, thermal, thermomechanical, magnetic, and morphological behavior

Contact Info

Product

Resources

About

Tuning the performance of PA6/EPDM‐MA nanocomposites reinforced with Ni_0.₅Zn₀_.₅Fe₂O₄. Effect of the mixing protocol on mechanical, thermal, thermomechanical, magnetic, and morphological behavior