Radiation vulcanization of natural rubber latex using 250 keV electron beam machine

Chirinos, Hugo; Yoshii, Fumio; Makuuchi, Keizo; Lugão, Ademar B.

doi:10.1016/s0168-583x(03)01114-5

Cited by 34 publications

(16 citation statements)

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“…Second, it does not employ chemical reagents and therefore, the final materials do not present chemical residues, and finally, the crosslinking level can be easily controlled through the level of absorbed dose employed. The irradiation process found remarkable interest in the scientific community, and there are plenty of articles in the literature regarding the effect of high‐energy electron irradiation not only on the properties of NR, modified NR, and their correspondent blends with other polymers but also on the properties of ENR …”

Section: Introductionmentioning

confidence: 99%

Study of the Foaming Kinetics in Epoxidized Natural Rubber Foams Crosslinked by Electron Beam Irradiation

Salmazo

Lopez‐Gil²,

Ariff

et al. 2018

Macro Chemistry & Physics

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This work focuses on studying natural rubber (NR) and epoxidized natural rubber (ENR) foams crosslinked at different absorbed doses and foamed using a chemical blowing agent. The aim is to study if the existence of epoxide groups within the natural rubber molecular structure influences the expansion capacity and the cellular structure morphology of these types of foam. This is accomplished by studying the foaming kinetics, that is, by quantifying the evolution of density and cellular structure parameters, such as cell size and cell density, as a function of foaming time. The results show that ENR foams exhibit higher cell nucleation rates and less intense cell degeneration than NR ones, which is because the presence of epoxide groups allows the polymer to reach higher crosslinking levels. Consequently, ENR foams present more homogeneous cellular structures and lower cell sizes.

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Section: Introductionmentioning

confidence: 99%

Study of the Foaming Kinetics in Epoxidized Natural Rubber Foams Crosslinked by Electron Beam Irradiation

Salmazo

Lopez‐Gil²,

Ariff

et al. 2018

Macro Chemistry & Physics

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“…In general, there are many potential vulcanization techniques including sulfur, peroxide, and phenolic resin curing. These curing systems are exploited in the combination of various chemical ingredients together with curing state at high energy and temperature . A novel and inexpensive method to vulcanize natural rubber at low temperature by using glutaraldehyde (GA) has been reported recently .…”

Section: Introductionmentioning

confidence: 99%

Influence of grafting content on the properties of cured natural rubber grafted with PMMAs using glutaraldehyde as a cross‐linking agent

et al. 2017

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In this work, we present an easy way to vulcanize natural rubber using glutaraldehyde as a cross-linking agent. The effect of poly(methyl methacrylate) (PMMA) grafting along with cross-linking of natural rubber on the mechanical, thermal, and oil resistance properties was studied. The main objective of this work was to improve the properties of cured natural rubber (NR) based on glutaraldehyde (GA) as a curing agent by using modified NR. Cured NRg-PMMA with different grafting levels were studied systematically and compared with cured natural rubber. A remarkable improvement in the properties of natural rubber was obtained by grafting PMMA.Higher tensile strength without much reduction in elongation at break can be achieved by curing NRg-PMMA with glutaraldehyde. The natural rubber grafted with PMMA and subsequently cured with glutaraldehyde as a cross-linking agent was found to be a useful technique for improving the properties of natural rubber products. K E Y W O R D Sglutaraldehyde, graft copolymer, grafted PMMA, natural rubber, poly(methyl methacrylate), vulcanization How to cite this article: Kalkornsurapranee E, Yung-Aoon W, Thongnuanchan B, Thitithammawong A, Nakason C, Johns J. Influence of grafting content on the properties of cured natural rubber grafted with PMMAs using glutaraldehyde as a cross-linking agent.

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“…Secondly, the cross-linking degree can be controlled throughout the applied irradiation dose (ID) before the foaming process. The process has found tremendous interest in the scientific community and there are plenty of articles in the literature regarding the effect of high energy electron radiation not only on the properties of NR, modified NR and their blends Almaslow et al, 2013;Banik and Bhowmick, 2000;Chirinos et al, 2003;Craciun et al, 2014;Hassan et al, 2007;Jing et al, 2013;Khalid et al, 2010;Manshaie et al, 2011;Mitra et al, 2008;Nabil and Ismail, 2014;Ratnam and Zaman, 1999;Ratnam et al, 2000;Sharif et al, 2005;Stelescu et al, 2014) but also on the properties of polyolefins such as low-density polyethylene (LDPE), high-density polyethylene (HDPE) and ethylene-vinyl acetate (EVA) (Eaves, 1988;Khonakdara et al, 2006;.…”

Section: Introductionmentioning

confidence: 99%

Influence of the irradiation dose in the cellular structure of natural rubber foams cross-linked by electron beam irradiation

Salmazo

Lopez‐Gil

Ariff

et al. 2016

Industrial Crops and Products

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a b s t r a c tThis work focused on the production of natural rubber foams by cross-linking the polymer matrix using high energy electron beam at different irradiation doses (from 50 to 150 kGy) and foaming it with a chemical blowing agent. The aim was to study how the irradiation dose influenced the cellular structure morphology of the produced foams. This was accomplished by quantifying the evolution of cellular structure parameters, such as cell size and cell density, with respect to foaming time and irradiation dose. The results showed that the foams irradiated at the lowest dose are more prone to suffer cellular structure degeneration, resulting in the formation of bimodal cellular structures, while foams irradiated with the highest dose, exhibited more uniform cellular structure. In the latter case, the nucleation density clearly increased resulting in the formation of foams with homogeneous cellular structures and smaller cell sizes (≈20 m).

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Radiation vulcanization of natural rubber latex using 250 keV electron beam machine

Cited by 34 publications

References 0 publications

Study of the Foaming Kinetics in Epoxidized Natural Rubber Foams Crosslinked by Electron Beam Irradiation

Study of the Foaming Kinetics in Epoxidized Natural Rubber Foams Crosslinked by Electron Beam Irradiation

Influence of grafting content on the properties of cured natural rubber grafted with PMMAs using glutaraldehyde as a cross‐linking agent

Influence of the irradiation dose in the cellular structure of natural rubber foams cross-linked by electron beam irradiation

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