Carbon dioxide adsorption of diallylamine-modified natural rubber with modified silica particles

Tumnantong, Dusadee; Panploo, Krittaya; Chalermsinsuwan, Benjapon; Prasassarakich, Pattarapan; Poompradub, Sirilux

doi:10.3144/expresspolymlett.2021.72

Cited by 4 publications

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“…Accordingly, surface‐initiated redox polymerization (SI‐RP), SI‐RAFT, and SI‐reverse ATRP based on the dual‐center initiation methods (azo, peroxide, persulfate‐amino, peroxide‐tertiary amine redox pairs, etc.) also encounter the same drawback 32–35 . The graft polymerization is competed and inhibited by the homopolymerization initiated by the dissociative propagating centers (initiator fragments or oxidants).…”

Section: Introductionmentioning

confidence: 99%

High‐efficient surface tailoring via reverse atom transfer radical polymerization and reversible addition‐fragmentation chain‐transfer polymerization in an aqueous system initiated by a monocenter redox pair

Cai

Jiang

Cao

et al. 2022

Journal of Polymer Science

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The commonly used multi-center initiation methods always lead to the formation of quantities of homopolymer in the surface tailoring based on reverse atom transfer radical polymerization (ATRP) and reversible addition-fragmentation chaintransfer (RAFT) polymerization. In this study, a monocenter redox pair constructed of silica bearing tert-butyl hydroperoxide groups and ascorbic acid (SiO 2 -TBHP/AsAc) was applied to substitute the commonly used initiation method of R-supported RAFT grafting polymerization. All the propagating radicals were restricted on the surface of solid particles during the whole procedure theoretically, resulting in a higher grafting efficiency of 95.1% combined with the "controllable" feature at 10 h. This redox pair was also used to initiate the reverse ATRP in miniemulsion successfully with a grafting efficiency of 86.3% at 10 h.The grafting efficiency obtained under this monocenter initiation method was significantly higher than that of the frequently reported surface modification by reverse ATRP and RAFT polymerization. In addition, the high-efficient surface tailoring was traced and confirmed by nuclear magnetic resonance, Fourier transform infrared, X-ray photoelectron spectroscopy, thermogravimetric analysis, transmission electron microscopy, and other analysis tests. The advantage of this monocenter redox pair will open a new avenue for the potential "high-efficient" surface tailoring of various materials.

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Section: Introductionmentioning

confidence: 99%

High‐efficient surface tailoring via reverse atom transfer radical polymerization and reversible addition‐fragmentation chain‐transfer polymerization in an aqueous system initiated by a monocenter redox pair

Cai

Jiang

Cao

et al. 2022

Journal of Polymer Science

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Kinetics and Mechanism Study of Different Types of Surface‐Imprinted Polymers for CO₂ Adsorption

Ishak,

Mohamed Nasir,

Ibrahim

et al. 2024

Environmental Quality Mgmt

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The increased level of CO2 in the atmosphere has led to global warming and climate change. To mitigate these problems, solid adsorbents have become attractive materials for capturing excess CO2 in the post‐combustion method. Molecularly imprinted polymer (MIP) can be applied to prepare highly selective adsorbents that could capture CO2 molecules. The MIP was prepared using the surface imprinted polymer technique in this preliminary work. Only two types of support materials were used (graphite and silica gel) to screen the best support material that could enhance the CO2 adsorption capacity of the resulting adsorbent, which was analyzed using a fixed‐bed column reactor. Graphite‐imprinted polymer (GMIP) was found to be a good potential for CO2 adsorption. The Avrami model best described the adsorption system, while the fixed‐bed curve data fit the Yoon–Nelson model well. The semi‐empirical method was used to assess the interaction mechanism of the molecularly imprinted polymer with CO2 during adsorption. This investigation involved testing four different ratios of the template complex to functional monomers. The ratio of 1:4 (CO2:Allylthiourea) demonstrated the highest binding energy, with a higher formation of hydrogen bonds. Film diffusion and intraparticle diffusion were the main rate‐limiting steps that played vital roles at different stages of CO2 adsorption. This preliminary work has enhanced the development of MIP for CO2 adsorption and showcased the integration of computational approaches in tailoring specific MIPs.

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Utilization of waste tire derived activated carbon as CO2 capture and photocatalyst for CO2 conversion

Toh-ae,

Timasart,

Tumnantong

et al. 2024

Sci Rep

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The aims of this research were to prepare activated carbon (AC) impregnated with tetraethylenepentamine (TEPA) for use in carbon dioxide (CO 2 ) capture and to then develop the AC-TEPA sorbent with titanium dioxide (TiO 2 ) as a catalyst for photocatalytic reduction. The AC was impregnated with TEPA at three loading levels (2.5, 5, and 10% [w/w]) and then examined for its CO 2 adsorption capacity under an ambient temperature and atmospheric pressure. The use of 5% (w/w) TEPA-impregnated AC (AC_5T) provided the highest CO 2 adsorption capacity and long-term operation with a regeneration ability for up to 10 cycles. Then, AC_5T-doped TiO 2 (AC_5T-TiO 2 ) was prepared as a photocatalytic reduction catalyst, since the presence of carbon and nitrogen in AC_5T could reduce the band gap energy and so enhance the photocatalytic reduction. In addition, the CO 2 -saturated AC_5T was used as a CO 2 source that could be directly converted to valuable chemicals using the AC_5T-TiO 2 catalyst under photocatalytic reduction. Products were obtained in both the liquid (methanol) and gaseous (methane, carbon monoxide, and hydrogen) phases. Accordingly, the challenge of this research was to make valuable products from CO 2 and to manage waste tires, following the circular economy concept.

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Carbon dioxide adsorption of diallylamine-modified natural rubber with modified silica particles

Cited by 4 publications

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High‐efficient surface tailoring via reverse atom transfer radical polymerization and reversible addition‐fragmentation chain‐transfer polymerization in an aqueous system initiated by a monocenter redox pair

High‐efficient surface tailoring via reverse atom transfer radical polymerization and reversible addition‐fragmentation chain‐transfer polymerization in an aqueous system initiated by a monocenter redox pair

Kinetics and Mechanism Study of Different Types of Surface‐Imprinted Polymers for CO₂ Adsorption

Utilization of waste tire derived activated carbon as CO2 capture and photocatalyst for CO2 conversion

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Carbon dioxide adsorption of diallylamine-modified natural rubber with modified silica particles

Cited by 4 publications

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High‐efficient surface tailoring via reverse atom transfer radical polymerization and reversible addition‐fragmentation chain‐transfer polymerization in an aqueous system initiated by a monocenter redox pair

High‐efficient surface tailoring via reverse atom transfer radical polymerization and reversible addition‐fragmentation chain‐transfer polymerization in an aqueous system initiated by a monocenter redox pair

Kinetics and Mechanism Study of Different Types of Surface‐Imprinted Polymers for CO2 Adsorption

Utilization of waste tire derived activated carbon as CO2 capture and photocatalyst for CO2 conversion

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Kinetics and Mechanism Study of Different Types of Surface‐Imprinted Polymers for CO₂ Adsorption