Versatile one-pot synthesis of grafted-hydrogenated natural rubber

Kookarinrat, Chanathip; Paoprasert, Peerasak

doi:10.1007/s13726-014-0306-z

Cited by 13 publications

(6 citation statements)

References 31 publications

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“…The FT‐IR spectrum of natural rubber showed the signature signals of C−H stretching, C=C stretching, CH 2 bending, CH 3 bending, =CH out‐of‐plane bending at 2851–2960, 1631, 1446, 1375, and 830 cm −1 , respectively. Other signals, O−H, C=O, O−P‐O, and C−O at 3367, 1775, 1240, and 1055 cm −1 , belong to other components in natural rubber, such as moisture, proteins, phospholipids, etc [40–43] . The signals of the prepared carbon dots located at 2969, 1587, and 1365 cm −1 refer to C−H stretching, C=C stretching, and C−H bending, respectively.…”

Section: Resultsmentioning

confidence: 98%

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High‐performance Mg²⁺ Sensors Based on Natural Rubber‐derived, Label‐free Carbon Dots

et al. 2022

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Detection of trace magnesium ion (Mg 2 + ) is important in environmental and health monitoring. In this work, highperformance Mg 2 + sensor was developed from label-free carbon dots. The novel carbon dots were prepared for the first time from natural rubber through the two-step pyrolysis and hydrothermal method. They showed selectivity towards Mg 2 + against a range of metal ions in solution and yielded a detection limit of 4.3 μM. The Mg 2 + detection in real water samples showed an excellent recovery of 97.21 to 99.21 %. A paper-based sensor was also fabricated as a portable device, showing a detection limit of 8.0 μM. UV-vis and X-ray absorption studies provided some evidences of the unique dynamic interactions between carbon dots and Mg 2 + ions. In summary, the novelty of this work lies upon (i) developing a methodology of converting abundant, low-cost natural rubber into carbon dots and (ii) fabricating sensitive and selective sensors from the label-free carbon dots for the detection of Mg 2 + both in solution and as paper-based devices. The findings in this work will therefore have potential for environmental and health monitoring applications.

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Section: Resultsmentioning

confidence: 98%

“…etc. [40][41][42][43] The signals of the prepared carbon dots located at 2969, 1587, and 1365 cm À 1 refer to CÀ H stretching, C=C stretching, and CÀ H bending, respectively. These signals demonstrated sp 3 and sp 2 hybridization carbon in the structure.…”

Section: Chemistryselectmentioning

confidence: 99%

High‐performance Mg²⁺ Sensors Based on Natural Rubber‐derived, Label‐free Carbon Dots

et al. 2022

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“…Several studies related to NR grafting also have been reported. Kookarinrat and Paoprasert [ 17 ] introduced the grafting of methyl methacrylate (MMA) onto NR latex to ameliorate the stability of NR by saturating the double bonds through grafting and hydrogenation reactions as a one-pot method. Several studies have also been done on MMA- g -ENR [ 4 , 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Free-Radical Photopolymerization of Acrylonitrile Grafted onto Epoxidized Natural Rubber

et al. 2021

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The exploitation of epoxidized natural rubber (ENR) in electrochemical applications is approaching its limits because of its poor thermo-mechanical properties. These properties could be improved by chemical and/or physical modification, including grafting and/or crosslinking techniques. In this work, acrylonitrile (ACN) has been successfully grafted onto ENR- 25 by a radical photopolymerization technique. The effect of (ACN to ENR) mole ratios on chemical structure and interaction, thermo-mechanical behaviour and that related to the viscoelastic properties of the polymer was investigated. The existence of the –C≡N functional group at the end-product of ACN-g-ENR is confirmed by infrared (FT-IR) and nuclear magnetic resonance (NMR) analyses. An enhanced grafting efficiency (~57 %) was obtained after ACN was grafted onto the isoprene unit of ENR- 25 and showing a significant improvement in thermal stability and dielectric properties. The viscoelastic behaviour of the sample analysis showed an increase of storage modulus up to 150 × 103 MPa and the temperature of glass transition (Tg) was between −40 and 10 °C. The loss modulus, relaxation process, and tan delta were also described. Overall, the ACN-g-ENR shows a distinctive improvement in characteristics compared to ENR and can be widely used in many applications where natural rubber is used but improved thermal and mechanical properties are required. Likewise, it may also be used in electronic applications, for example, as a polymer electrolyte in batteries or supercapacitor.

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“…Upon exposure to these stimuli, undesirable reactions such as crosslinking and chain scission occur to the double bonds of cis ‐polyisoprene . Many chemical‐based methods for improving the properties of NR have been reported, such as hydrogenation, chlorination, epoxidation, bromination, sulfonation, grafting and crosslinking, producing a range of novel rubber‐based materials. However, among these materials, NR with responsive functions is rare.…”

Section: Introductionmentioning

confidence: 99%

Preparation of pH‐responsive crosslinked materials from natural rubber and poly(4‐vinylpyridine)

Sansuk

Phetrong

Paoprasert

2017

Polymer International

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Stimuli‐responsive elastomers are smart materials for sensing applications. Natural rubber (NR) is a renewable elastomer with excellent elasticity and fatigue resistance. In this work, a straightforward method for the preparation of pH‐responsive crosslinked materials from NR and poly(4‐vinylpyridine) (P4VP) via free radical crosslinking reaction using benzoyl peroxide (BPO) as an initiator is described. The effects of P4VP and BPO concentrations, reaction time and reaction temperature on immobilization percentage were investigated. It was found that the immobilization percentage reached 90% when using a P4VP concentration of 150 phr and a BPO concentration of 10 phr for 24 h at 90 °C. The pH responsiveness of the crosslinked materials was studied via water swelling, water contact angle and dye release measurements. Unlike unmodified rubber, the P4VP‐crosslinked NR was found to be pH‐responsive in acidic solution. Indigo carmine adsorption studies showed the Langmuir isotherm suggesting monolayer coverage of dye on the rubber surface. The dye could also be released upon increasing the pH of solution above 4. Based on these results, the introduction of pH responsiveness to NR will lead to novel responsive rubber‐based materials that can be used in biomedical and sensing applications. © 2016 Society of Chemical Industry

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Versatile one-pot synthesis of grafted-hydrogenated natural rubber

Cited by 13 publications

References 31 publications

High‐performance Mg²⁺ Sensors Based on Natural Rubber‐derived, Label‐free Carbon Dots

High‐performance Mg²⁺ Sensors Based on Natural Rubber‐derived, Label‐free Carbon Dots

Free-Radical Photopolymerization of Acrylonitrile Grafted onto Epoxidized Natural Rubber

Preparation of pH‐responsive crosslinked materials from natural rubber and poly(4‐vinylpyridine)

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Versatile one-pot synthesis of grafted-hydrogenated natural rubber

Cited by 13 publications

References 31 publications

High‐performance Mg2+ Sensors Based on Natural Rubber‐derived, Label‐free Carbon Dots

High‐performance Mg2+ Sensors Based on Natural Rubber‐derived, Label‐free Carbon Dots

Free-Radical Photopolymerization of Acrylonitrile Grafted onto Epoxidized Natural Rubber

Preparation of pH‐responsive crosslinked materials from natural rubber and poly(4‐vinylpyridine)

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High‐performance Mg²⁺ Sensors Based on Natural Rubber‐derived, Label‐free Carbon Dots

High‐performance Mg²⁺ Sensors Based on Natural Rubber‐derived, Label‐free Carbon Dots