Tailoring permeation characteristics of bromobutyl rubber with polyepichlorohydrin and graphene nanoplatelets

Kumar, Suman; Chattopadhyay, Santanu; Padmanabhan, R.; Sreejesh, A; Nair, Sujith; Unnikrishnan, Ginu; Nando, G. B.

doi:10.1088/2053-1591/2/10/105007

Cited by 12 publications

(17 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Even though the dispersion of GNP is uniform throughout both blends. A similar observation was found in the case of graphene‐reinforced bromobutyl/epichlorohydrin rubber blends, studied by Kumar et al 4,9 …”

Section: Resultssupporting

confidence: 83%

“…Thomas et al 3 compared the properties of graphite and graphene oxide filled epoxidized natural rubber (ENR) composites, and it was reported that the resultant composites had good mechanical as well as gas barrier properties. The composites of graphene with several rubbers, like butyl rubber, 4 NR, 5 and SBR 6 have already been studied by various researcher's, and the results show an increment in mechanical, as well as air barrier properties with an excellent dispersion of GNP.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Evaluation of air permeability characteristics on the hybridization of carbon black with graphene nanoplatelets in bromobutyl rubber/epoxidized natural rubber composites for inner‐liner applications

Raju

Dash²,

Dey³

et al. 2020

Polymers for Advanced Techs

Self Cite

View full text Add to dashboard Cite

Nanotechnology has been explored recently as a means of enhancing the properties of conventional elastomers for engineering applications. In the current study, the effect of nanofillers on air impermeability properties of Brominated isobutylene‐isoprene rubber (BIIR)/Epoxidized natural rubber (ENR) blend has analyzed for automotive applications. The ENR chosen is ENR 25 and ENR 50 (25 and 50% epoxidation) and prepared the blends in a ratio of 75:25 (BIIR:ENR), and from both blend based composites, a part of carbon black replaced with graphene nanoplatelets (GNP). The physical and thermal properties were compared for both binary blend nanocomposites to study the level of exfoliation and reinforcement behavior of GNP. Morphology studies were employed to reveal the level of interaction between GNP and carbon black in both blends. The influence of epoxidation in the formation of nanostructures in both blends have been evaluated, and the effect of nanostructures on air permeability properties was studied. The air impermeability of BIIR‐ENR 50 nanocomposites were improved with increasing platelet concentration, a 30% improvement in air permeability is obtained for BIIR‐ENR 50 composites over BIIR ‐ENR 25.

show abstract

Section: Resultssupporting

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Evaluation of air permeability characteristics on the hybridization of carbon black with graphene nanoplatelets in bromobutyl rubber/epoxidized natural rubber composites for inner‐liner applications

Raju

Dash²,

Dey³

et al. 2020

Polymers for Advanced Techs

Self Cite

View full text Add to dashboard Cite

show abstract

“…Hence, the rubber chains are still available for dynamic relaxation leading to higher dissipation energy and higher tanδ value. When the rubber phase is crosslinked to a larger extent at high doses of radiation, the chains become immobilized and cannot contribute to the dynamic relaxation leading to lower dissipation energy and lower tanδ value (EP7R150) . It is also observed that, there is a gradual shift in damping peaks to higher temperatures for the PDMS rubber (from −116.7°C to −114.1°C) as the radiation dose increased from 25 to 150 kGy.…”

Section: Resultsmentioning

confidence: 99%

“…In case of non irradiated EP7R0 blend, the rubber chain segments are free to rotate and stretched under dynamic stress–strain cycle which causes higher energy dissipation of and higher tanδ value. As the radiation dose gets increased from 0 to 150 kGy, the rubber phase gets crosslinked more and the free rubber chains become immobilized thus not contributing to the dynamic loss characteristics leading to lower dissipation energy and lower tanδ for EP7R150 blend . This is most likely to be the reason behind the decrease in the magnitude of tanδ peak for the 90:10 EOC:PDMS blends after electron beam irradiation (Fig.…”

Section: Resultsmentioning

confidence: 99%

Exploring the effect of radiation crosslinking on the physico‐mechanical, dynamic mechanical and dielectric properties of EOC–PDMS blends for cable insulation applications

Ramachandran

Naskar

Nando

2016

Polymers for Advanced Techs

View full text Add to dashboard Cite

This work focuses on the effect of electron beam irradiation on the physico‐mechanical, dynamic mechanical and dielectric properties of blends based on ethylene octene copolymer (EOC) and poly dimethyl siloxane (PDMS) rubber. It is found that electron beam irradiation caused considerable improvement in the physico‐mechanical properties; the tensile strength was enhanced by nearly 35% for 70:30 EOC:PDMS blend. Phase morphology of the blends analyzed before irradiation by scanning electron microscopy (SEM) exhibited droplet/matrix morphology with sizes of the PDMS rubber domain varying from 0.55 µm to 0.47 µm as the amount of PDMS rubber decreased from 30 wt% to 10 wt%. This reduction in the PDMS rubber domain has been correlated with the physico‐mechanical properties of the blends. Further, the dynamic mechanical properties and creep behavior of these EOC:PDMS blends before and after irradiation has been studied. It is inferred that the 70:30 blend after radiation crosslinking shows a 17% decrease in the creep compliance, i.e. higher creep resistance compared to neat blends. All the radiation crosslinked blends exhibited lower dielectric constant, lower dielectric loss and higher electrical resistivity as compared to the virgin blends which makes it suitable for cable insulating application. Copyright © 2016 John Wiley & Sons, Ltd.

show abstract

“…Of course, the two methods would be employed together to enhance the gas barrier property. For example, Kumar et al prepared (BIIR)‐polyepichlorohydrin rubber nanocomposite filled with modified clay and investigated its transmission properties . Despite these studies, however, the mechanism of penetration, which can be understood from a microcosmic view, is still weak …”

Section: Introductionmentioning

confidence: 99%

The Relationship between Specific Structure and Gas Permeability of Bromobutyl Rubber: A Combination of Experiments and Molecular Simulations

Cai

You

Zhao

et al. 2019

Macro Theory & Simulations

View full text Add to dashboard Cite

The relationship between the specific structure and gas permeability of brominated poly(isobutylene‐co‐isoprene) rubber (BIIR) is investigated by a combination method of both experiments and molecular simulation. It is found that the various content of secondary allyl bromide isoprene (SABI) units exert an effect on transport behavior, including both diffusion and solution behavior of small molecule in BIIR, glass transition temperature, and vulcanization characteristics. The results show that a minimum value of permeability coefficient exists with the increase of SABI content. Moreover, more SABI in BIIR will lead to a rise in glass transition temperature and curing rate. It means that the gas permeability of BIIR can be further improved by adjusting composition of the copolymer BIIR. Meanwhile, this research may also provide useful information for understanding the penetration mechanism of oxygen in the BIIR matrix and supply a theoretical tool for designing high air tightness rubber materials.

show abstract

Tailoring permeation characteristics of bromobutyl rubber with polyepichlorohydrin and graphene nanoplatelets

Cited by 12 publications

References 33 publications

Evaluation of air permeability characteristics on the hybridization of carbon black with graphene nanoplatelets in bromobutyl rubber/epoxidized natural rubber composites for inner‐liner applications

Evaluation of air permeability characteristics on the hybridization of carbon black with graphene nanoplatelets in bromobutyl rubber/epoxidized natural rubber composites for inner‐liner applications

Exploring the effect of radiation crosslinking on the physico‐mechanical, dynamic mechanical and dielectric properties of EOC–PDMS blends for cable insulation applications

The Relationship between Specific Structure and Gas Permeability of Bromobutyl Rubber: A Combination of Experiments and Molecular Simulations

Contact Info

Product

Resources

About