Thermoplastic elastomers-based natural rubber and thermoplastic polyurethane blends

Pichaiyut, Skulrat; Nakason, Charoen; Vennemann, Norbert

doi:10.1007/s13726-011-0006-x

Cited by 36 publications

(30 citation statements)

References 34 publications

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“…Also total weight loss for PP/EPDM, TSE and FSP samples are 99.4, 94.7 and 94.2%, respectively. and are The reason for higher thermal stability of TPO nanocomposite attributed to the incorporation and dispersion of clay in the matrix which the clay layers act as superior insulation and mass transport barrier to the volatile products generated during decomposition . The similar result was also observed by Chiu et al .…”

Section: Resultssupporting

confidence: 72%

Study of morphology and mechanical properties of PP/EPDM/clay nanocomposites prepared using twin‐screw extruder and friction stir process

et al. 2018

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In this paper, PP/EPDM nanocomposites with 5 wt% nanoclay are fabricated by friction stir processing (FSP) and compared to the results obtained via a conventional twin screw extruder (TSE). Also, the effects of process parameters of these process on morphology and mechanical properties of this nanocomposites are investigated using Taguchi analysis. The prepared PP/EPDM/clay nanocomposites by two methods were characterized using X‐ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), thermogravimetric analysis (TGA) and mechanical property tests. Comparison of the results of these methods indicated that PP/EPDM/clay nanocomposite fabricated by FSP had a better dispersion of nanoclay and mechanical properties. The results show that by addition of 5 wt% nanoclay to the base material, the tensile strength and tensile modulus of FSP sample are 12% and 8% higher than the TSE sample. The TGA results shows that, the temperature at 50% weight loss for PP/EPDM blend is 382°C. While this temperature for TSE and FSP samples are 395°C and 406°C, respectively. Under optimal conditions of rotational speed of 1,200 rpm, traverse speed of 50 mm/min, shoulder temperature of 100°C and number passes of 3, simultaneous maximization of tensile strength (19.35 MPa), tensile modulus (643 MPa), impact strength (63 J/m) and elongation at break (101%) can be obtained. POLYM. COMPOS., 40:3306–3314, 2019. © 2018 Society of Plastics Engineers

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Section: Resultssupporting

confidence: 72%

Study of morphology and mechanical properties of PP/EPDM/clay nanocomposites prepared using twin‐screw extruder and friction stir process

et al. 2018

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“…This suggests that the ENR in the blend increased flow resistance and melt viscosity. This might be due to the high intrinsic viscosity of pure ENR, together with the interfacial interactions of polar functional groups in ENR and TPU, as illustrated in Scheme 1 [18]. That is, electrostatic attractions exist between the polar functional groups via H-bonding of their hydrogen atoms, and the nearby highly electronegative oxygen or nitrogen atoms typically also promote intermolecular forces, which increase both viscosity and compatibility in the blend [33,34].…”

Section: Influences Of Rha Loading On Dynamic Propertiesmentioning

confidence: 99%

Property correlations for dynamically cured rice husk ash filled epoxidized natural rubber/thermoplastic polyurethane blends: Influences of RHA loading

Pongdong

Kummerlöwe²,

Vennemann³

et al. 2016

Polymer Testing

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“…In Table , it is clear that the lowest water contact angle and hence the highest polarity (0.39) was observed for the TPU phase. This is attributed to the presence of polar functional groups (i.e., OCOOR, COONH) in this TPU . On the other hand, the polar components in ENR‐25, the epoxide groups and their opened ring products, only gave it moderate polarity (0.11) below the polarity of the TPU.…”

Section: Resultsmentioning

confidence: 89%

“…Moreover, H‐bonds might readily form between the hydroxyl groups on RHA surfaces and the epoxide groups in ENR‐25, before blending with the TPU. Also, possibly covalent bonds were formed linking the ring opened hydroxyl adducts of ENR‐25 at the processing temperature (Figure ) . This might also obstruct the migration of RHA particles into the TPU phase.…”

Section: Resultsmentioning

confidence: 99%

Thermodynamically and kinetically favored locations of rice husk ash particles in the phase structure, and the properties of epoxidized natural rubber/thermoplastic polyurethane blends

Pongdong

Kummerlöwe²,

Vennemann³

et al. 2018

J of Applied Polymer Sci

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This article aims to study the influences of the selective location of rice husk ash (RHA) particles on morphological, mechanical, and dynamic properties of epoxidized natural rubber and thermoplastic polyurethane blends (ENR/TPU). Thermodynamic aspects, that is, interfacial tension and work of adhesion were assessed from estimates based on surface tension. It was found that the RHA particles had stronger interactions with the ENR than the TPU, of the co‐continuous phases. The phase structure was mainly controlled by kinetic factors, particularly by the mixing sequence, and to a lesser degree by thermodynamics. Furthermore, the microstructure with RHA particles dispersed in the ENR co‐continuous phase was found to give enhanced mechanical properties. This might be attributed to the higher work of adhesion between ENR and RHA that stabilized the encapsulated RHA particles against shear and elongational stresses, during melt mixing and in the final products. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46681.

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Thermoplastic elastomers-based natural rubber and thermoplastic polyurethane blends

Cited by 36 publications

References 34 publications

Study of morphology and mechanical properties of PP/EPDM/clay nanocomposites prepared using twin‐screw extruder and friction stir process

Study of morphology and mechanical properties of PP/EPDM/clay nanocomposites prepared using twin‐screw extruder and friction stir process

Property correlations for dynamically cured rice husk ash filled epoxidized natural rubber/thermoplastic polyurethane blends: Influences of RHA loading

Thermodynamically and kinetically favored locations of rice husk ash particles in the phase structure, and the properties of epoxidized natural rubber/thermoplastic polyurethane blends

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