Composition Determination of Rubber Blends by Applying Differential Scanning Calorimetry and SPA-PLS Treatment

Riba, Jordi-Roger; Mansilla, M. A.; Canals, Trini; Cantero, Rosa

doi:10.1590/1980-5373-mr-2018-0415

Cited by 5 publications

(3 citation statements)

References 30 publications

(31 reference statements)

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“…The peak at the wavenumber of 3316 cm -1 can be assigned to stretching vibrations of υ(OH) and it can be seen an increase of relative intensity of peaks depending on plasma treatment position and time, for T301, T302 and T102. Typical peaks of the rubber polymer matrix were observed in the area between 3000 cm -1 to the 2840 cm -1 related to the symmetric and asymmetric stretching vibrations of CH, -CH 2 and -CH 3 [43][44][45][46][47][48][49][50][51][52]. Stretching vibrations of υ(CH) from the styrene butadiene rubber were observed near the wavenumber of 3000 cm -1 , overlapping stretching vibrations of υ(C=C-H) of natural rubber.…”

Section: Ft-ir Analysismentioning

confidence: 99%

Atmospheric plasma treatment of rubber and its effect on surface characteristics

Ďurišová,

Pajtášová,

Ondrušová

et al. 2024

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The changes of rubber blend surface induced by atmospheric plasma at several conditions were studied via FTIR, SEM, contact angle and adhesion measurement. After plasma, the presence of OH, COO- bands of higher intensity was observed, whilst methylene groups reduced. A several formations of weaker agglomeration and cleaning of the surface was recognized. Also an intense decline of contact angles was observed. The plasma induced significantly greater changes at the 0.5 mm position, whereas emission times of 10 s and 30 s did not significantly affect the modifications of the investigated surface.

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Section: Ft-ir Analysismentioning

confidence: 99%

Atmospheric plasma treatment of rubber and its effect on surface characteristics

Ďurišová,

Pajtášová,

Ondrušová

et al. 2024

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“…Additionally, the asymmetrical stretching of -CH 3 at 2960 cm À1 and -CH 3 of symmetrical stretching deformation at 1375 cm À1 were the most significant peaks for identified the NR qualitatively and quantitatively. [39][40][41][42] The peaks around 1643 cm À1 , 887 cm À1 and 699 cm À1 can also identify NR. 40 The bands assigned to Silicon monoxide (Si-O) stretching at 1097 cm À1 for SiO 2 , and -C -Cstretching 1021 cm À1 for CB.…”

Section: Ftir Spectramentioning

confidence: 99%

Investigation of mechanical properties and microstructural analysis of polymeric waste strengthened hybrid composites

Kaliyappan

Dhananchezian

2023

Journal of Elastomers & Plastics

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In this work, investigated the mechanical properties and microstructure of Ground Tyre Rubber (GTR) i.e. polymeric waste blended with Natural Rubber (NR), Butadiene Rubber (BR), and Styrene-Butadiene Rubber (SBR) composites. A two-roll mill and hydraulic press were used to create NR (70 parts per hundred of rubber (phr)) composites with 25 phr of BR and 5 phr of SBR and various proportions of GTR (0, 10, 20, 30, and 40 phr). With the incorporation of Nylon 6 (Ny 6) at 5 phr, the interfacial adhesion of NR/BR/SBR composites was improved. NR-based hybrid composites with mechanical and curing properties were enhanced and compared with pure NR. It was noted that the maximum tensile strength, tear strength, and hardness were enhanced by 77.74%, 17.9%, and 36.4% in NR/BR/SBR/GTR (70/25/5/40) over pure NR. The elongation at break was decreased by 54.55%, while young’s modulus was enhanced in NR/BR/SBR/GTR (70/25/5/40) over pure NR. With the incorporation of 40 phr of GTR in the NR/BR/SBR composites, cure properties like scorch time (tS2) and cure time (tC90) were reduced by 53.97% and 65.71%, while the minimum torque (ML) and maximum torque (MH) were enriched by 13.35% and 12%, respectively, when compared with the pure NR. Based on the Scanning Electron Microscope (SEM) and Thermogravimetric Analysis (TGA), GTR particles were uniformly distributed, and the thermal stability was enhanced by 25.40% in NR/BR/SBR/GTR (70/25/5/40) composites over pure NR. The absorption bands of NR, BR, SBR, and GTR elements in the developed hybrid composite were identified by Fourier transform infrared. The glass transition temperature (Tg) was diminished from -58.17°C to -63.42°C. With the inclusion of 40 phr of GTR in the NR/BR/SBR composite. Finally, it was recommended that the incorporation of 40 phr of GTR is suitable for NR/BR/SBR composites.

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“…Transmission FT-IR analysis, particularly in the middle infrared region (MIR), provides good results for the determination of elastomers content by the identification of the functional groups (Rigoli et al 2017, Damazio et al 2015, Sanches et al 2008. This technique also is useful for the evaluation of elastomers in binary mixtures, without overlapping of the analytical bands (Rigoli et al 2021, Riba et al 2019, Azevedo et al 2018. However, there is a researching gap regarding the MIR region for analysis of elastomers blends with overlapping bands, such as EPDM/BR.…”

Section: Introductionmentioning

confidence: 99%

Infrared quantification of binary rubber blends with overlapping bands

Barros

Murakami

Magalhães

et al. 2023

An. Acad. Bras. Ciênc.

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Quantification of elastomer content for the ethylene-propylene diene monomer/polybutadiene blend are seldom subjects in the literature, mainly due to rubber compatibility problems. However, suitable blend contents can lead to desirable properties. Infrared spectroscopy can quantify this type of blend even if some bands overlap, which can be resolved with the proper choice of spectrum obtaining mode and non-overlapping analytical bands. This study evaluates the ethylene-propylene diene monomer/polybutadiene blend quantification by transmission, reflection and transflectance infrared. Even though all of the methodologies showed satisfactory results, transmission mode provided better accuracy. The methodology is simple and suited for the rubber industry. The sample with the higher BR content provided the best result.The band at 743 cm -1 is weak and results in even weaker absorptions when measuring samples with low BR content. On the other hand, the developed methodologies provided an accurate determination of low EPDM contents. For infrared spectroscopy researchers, these results not only encourage using different spectra obtaining modes application, including less conventional ones such as transflectance in the near infrared region for quantitative determination, it also contributes to a wide discussion of errors in the developed methodologies, which are also seldom discussed in publications.

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Composition Determination of Rubber Blends by Applying Differential Scanning Calorimetry and SPA-PLS Treatment

Cited by 5 publications

References 30 publications

Atmospheric plasma treatment of rubber and its effect on surface characteristics

Atmospheric plasma treatment of rubber and its effect on surface characteristics

Investigation of mechanical properties and microstructural analysis of polymeric waste strengthened hybrid composites

Infrared quantification of binary rubber blends with overlapping bands

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