Study on the Effect of Nano and Active Particles of Alumina on Natural Rubber–Alumina Composites in the Presence of Epoxidized Natural Rubber as Compatibilizer

Konar, B. B.; Roy, S. C. Dutta; Pariya, T. K.

doi:10.1080/10601321003659531

Cited by 22 publications

(15 citation statements)

References 16 publications

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“…M L is the minimum torque in the rheometer that often correlates well with the Mooney viscosity of a compound [52], while M H is the maximum torque that was achieved during the curing time [51]. M L is commonly considered as a representative of the uncured stock's elastic modulus and also provides valuable information about a compound's processability [23], while M H indicates the vulcanizated strength of rubber blend compounds or the degree of crosslinking in the elastomer [52].…”

Section: Processability Evaluation Of Nr/epdm Blends By Cure Charactementioning

confidence: 99%

“…M L is commonly considered as a representative of the uncured stock's elastic modulus and also provides valuable information about a compound's processability [23], while M H indicates the vulcanizated strength of rubber blend compounds or the degree of crosslinking in the elastomer [52]. The higher the torque obtained, the higher the number of crosslinks created [54].…”

Section: Processability Evaluation Of Nr/epdm Blends By Cure Charactementioning

confidence: 99%

“…Modified GNPs-PEI experienced a reduction in their lateral dimension size together with additional surface chemistry on GNPs by PEI. Both scenarios may assist crosslink formation during the vulcanization time by promoting the accelerator systems to interact to each other for polysulfide formation [52]. Hence, adding GNPs-PEI tends to reduce t c90 and t s2 or accelerate the vulcanization process, but still efficiently cures the NR/EPDM blends [24,27].…”

Section: Processability Evaluation Of Nr/epdm Blends By Cure Charactementioning

confidence: 99%

“…It is also the extent of vulcanization and attainment of a characteristic network chains [52]. It is well understood that the blending of highly unsaturated NR and highly saturated EPDM generally leads to a cure mismatch, resulting in an uneven crosslink density distribution and with it, inferior mechanical properties [23].…”

Section: Processability Evaluation Of Nr/epdm Blends By Cure Charactementioning

confidence: 99%

“…The incorporation of GNPs-PEI increases the processing load due to increased flow resistance, caused by smaller sized GNP platelets and the formation of ''house-of-cards'' structures, in which edge-to-edge and edge-to-face interactions between the dispersed layers form percolation structures. In effect, this factor increasingly restricts the molecular mobility of macromolecules thus resulting in an increase in the processing torque behavior [52].…”

Section: Processability Evaluation Of Nr/epdm Blends By Cure Charactementioning

confidence: 99%

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Effects of poly(ethyleneimine) adsorption on graphene nanoplatelets to the properties of NR/EPDM rubber blend nanocomposites

et al. 2015

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The facile approach of non-covalent surface treatment utilizing poly(ethyleneimine) (PEI) polymer was applied to modify graphene nanoplatelets (GNPs). The effects of surface modification and various GNPs-PEI loadings to cure characteristic, mechanical, physical, and morphological properties of natural rubber (NR)/ethylenepropylene-diene-monomer (EPDM) blend nanocomposites were studied and compared to the unfilled NR/EPDM blend and blends filled with unmodified GNPs at similar loadings. We found that the modification of GNPs surface significantly influences the properties of NR/EPDM blends. The addition of GNPs significantly improved the blend's processability, offering approximately a 104.30 % increase in tensile strength obtained with the addition of 5.00 wt% GNPs-PEI. A reduced swelling index of Q f /Q g in parallel with an increase in modified GNPs-PEI content revealed enhancements in terms of rubber-filler interactions between the NR/EPDM matrix and GNPs. These findings were further supported by X-ray diffraction, differential scanning calorimetry, thermogravimetry analysis, and fracture morphology by scanning electron microscope.

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Section: Processability Evaluation Of Nr/epdm Blends By Cure Charactementioning

confidence: 99%

Section: Processability Evaluation Of Nr/epdm Blends By Cure Charactementioning

confidence: 99%

Section: Processability Evaluation Of Nr/epdm Blends By Cure Charactementioning

confidence: 99%

Section: Processability Evaluation Of Nr/epdm Blends By Cure Charactementioning

confidence: 99%

Section: Processability Evaluation Of Nr/epdm Blends By Cure Charactementioning

confidence: 99%

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Effects of poly(ethyleneimine) adsorption on graphene nanoplatelets to the properties of NR/EPDM rubber blend nanocomposites

et al. 2015

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Insulating Paper Cellulose with High Mechanical Performance and Low Polarizability: The Effect of Doping Concentration on Polyhedral Oligomeric Silsesquioxanes‐Modified Cellulose

et al. 2021

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To study the effect of doping concentration on polyhedral oligomeric silsesquioxane (POSS)‐modified cellulose and its internal mechanism, molecular dynamics is used to establish a pure cellulose model and 1, 2, 3, 4, and 5 wt% POSS‐modified cellulose models, and the cohesive energy density and solubility parameter, mechanical properties, free volume, mean square displacement, and polarizability are calculated at 343 K. The simulation results show that the addition of POSS effectively improves the compatibility and mechanical performance of cellulose and at the same time enhances its thermal stability. Among the five modified cellulose models, the modification effect of the 3 wt% POSS‐modified cellulose model is the best. It is also found that the addition of POSS effectively reduces the polarizability of cellulose and even the electric field distribution in the oil paper insulation system, so as to enhance the insulation of the transformer. With the increase in concentration, the polarizability decreases.

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Effects of EPDM‐g‐MAH compatibilizer and internal mixer processing parameters on the properties of NR/EPDM blends: An analysis using response surface methodology

Razak

Ahmad

Ratnam

et al. 2015

J of Applied Polymer Sci

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This study evaluates the effects of ethylene-propylene-diene-monomer grafted maleic anhydride (EPDM-g-MAH) and internal mixer melt compounding processing parameters on the properties of natural rubber/ethylene-propylene-diene rubber (NR/ EPDM) blends. Using Response Surface Methodology (RSM) of 2 5 two-level fractional factorial, we studied the effects of NR/EPDM ratio, mixing temperature, Banbury rotor speed, mixing period, and EPDM-g-MAH contents in NR/EPDM blends. The study found that the presence of EPDM-g-MAH in NR/EPDM blends had a predominant role as a compatibilizing agent, which affected the processability and properties of the final material. We also determined the model fitting with constant determination, R 2 of 99.60% for tensile strength (TS) response with a suggested combination of mixing process input parameters. The reproducibility of the proposed mixing strategy was then confirmed through model validation with a minor deviation at 12.303% and higher desirability of 0.960. This study is essential in providing a process design reference for NR/EPDM blends preparation by melt-blending and the role of a compatibilizer from the systematic Design of Experiment (DOE) approach. The experimental findings were further supported with swelling and cross-link density measurements, differential scanning calorimetry analysis, and observation of fracture morphology using a scanning electron microscope.

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Study on the Effect of Nano and Active Particles of Alumina on Natural Rubber–Alumina Composites in the Presence of Epoxidized Natural Rubber as Compatibilizer

Cited by 22 publications

References 16 publications

Effects of poly(ethyleneimine) adsorption on graphene nanoplatelets to the properties of NR/EPDM rubber blend nanocomposites

Effects of poly(ethyleneimine) adsorption on graphene nanoplatelets to the properties of NR/EPDM rubber blend nanocomposites

Insulating Paper Cellulose with High Mechanical Performance and Low Polarizability: The Effect of Doping Concentration on Polyhedral Oligomeric Silsesquioxanes‐Modified Cellulose

Effects of EPDM‐g‐MAH compatibilizer and internal mixer processing parameters on the properties of NR/EPDM blends: An analysis using response surface methodology

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