The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform
Kyung Jin Lee - One of the best experts on this subject based on the ideXlab platform.
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n chloro hydantoin functionalized polyurethane fibers toward protective cloth against chemical warfare agents
Polymer, 2018Co-Authors: Jihyun Choi, Da Som Moon, Sam Gon Ryu, Bumjae Lee, Wu Bin Ying, Kyung Jin LeeAbstract:Abstract Polyurethane nanofibers functionalized by high amount of N-chloro hydantoin were prepared for the decontamination of chemical warfare agents. Azido-polyurethane was firstly synthesized using azido-polydiol with 4,4′-methylenebis(phenylisocyanate) and 1,4-butanediol via step-addition polymerization. Hydantoin was introduced into the polyurethane via click reaction, followed by electrospinning and chlorination to obtain the decontaminable fibers. This N-chlorinated hydantoin-polyurethane fiber is an active decontaminable species for 2-chloroethyl ethyl sulfide and Demeton-S-methyl, the simulant of chemical warfare agent. The decontamination efficiency of each exhibits 69% and 16% for 2-chloroethyl ethyl sulfide and Demeton-S-methyl, respectively, with molar ratio of 1/1 for 2 h at ambient condition. This N-chlorinated hydantoin-polyurethane fiber exhibited considerable potential as the decontaminable material against toxic chemical warfare agents.
Wu Bin Ying - One of the best experts on this subject based on the ideXlab platform.
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n chloro hydantoin functionalized polyurethane fibers toward protective cloth against chemical warfare agents
Polymer, 2018Co-Authors: Jihyun Choi, Da Som Moon, Sam Gon Ryu, Bumjae Lee, Wu Bin Ying, Kyung Jin LeeAbstract:Abstract Polyurethane nanofibers functionalized by high amount of N-chloro hydantoin were prepared for the decontamination of chemical warfare agents. Azido-polyurethane was firstly synthesized using azido-polydiol with 4,4′-methylenebis(phenylisocyanate) and 1,4-butanediol via step-addition polymerization. Hydantoin was introduced into the polyurethane via click reaction, followed by electrospinning and chlorination to obtain the decontaminable fibers. This N-chlorinated hydantoin-polyurethane fiber is an active decontaminable species for 2-chloroethyl ethyl sulfide and Demeton-S-methyl, the simulant of chemical warfare agent. The decontamination efficiency of each exhibits 69% and 16% for 2-chloroethyl ethyl sulfide and Demeton-S-methyl, respectively, with molar ratio of 1/1 for 2 h at ambient condition. This N-chlorinated hydantoin-polyurethane fiber exhibited considerable potential as the decontaminable material against toxic chemical warfare agents.
Jihyun Choi - One of the best experts on this subject based on the ideXlab platform.
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n chloro hydantoin functionalized polyurethane fibers toward protective cloth against chemical warfare agents
Polymer, 2018Co-Authors: Jihyun Choi, Da Som Moon, Sam Gon Ryu, Bumjae Lee, Wu Bin Ying, Kyung Jin LeeAbstract:Abstract Polyurethane nanofibers functionalized by high amount of N-chloro hydantoin were prepared for the decontamination of chemical warfare agents. Azido-polyurethane was firstly synthesized using azido-polydiol with 4,4′-methylenebis(phenylisocyanate) and 1,4-butanediol via step-addition polymerization. Hydantoin was introduced into the polyurethane via click reaction, followed by electrospinning and chlorination to obtain the decontaminable fibers. This N-chlorinated hydantoin-polyurethane fiber is an active decontaminable species for 2-chloroethyl ethyl sulfide and Demeton-S-methyl, the simulant of chemical warfare agent. The decontamination efficiency of each exhibits 69% and 16% for 2-chloroethyl ethyl sulfide and Demeton-S-methyl, respectively, with molar ratio of 1/1 for 2 h at ambient condition. This N-chlorinated hydantoin-polyurethane fiber exhibited considerable potential as the decontaminable material against toxic chemical warfare agents.
James H. Wynne - One of the best experts on this subject based on the ideXlab platform.
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rapid decontamination of chemical warfare agent simulant with thermally activated porous polymer foams
Industrial & Engineering Chemistry Research, 2018Co-Authors: Robert B Balow, Christopher L Mcgann, Grant C Daniels, Jeffrey G. Lundin, Spencer L. Giles, Pehr E Pehrsson, James H. WynneAbstract:Highly porous poly(dicyclopentadiene) (pDCPD) foam was synthesized via ring opening metathesis polymerization and high internal phase emulsion (HIPE) templating. Alkane and alkene moieties within the pDCPD foam oxidized slowly in air to form carbonyl, peroxy, and hydroxyl groups. Heating pDCPD to 85 °C in air accelerated the oxidation of pDCPD, producing reactive peroxy species at reduced time scales, compared to oxidation at room temperature. The oxidized pDCPD foams rapidly sequestered and decontaminated the toxic chemical warfare agent simulant, Demeton-S via oxidation to vinyl, sulfoxide, and sulfone oxidation products. In addition, the porosity and high surface area of the pDCPD HIPE foams likely assists in the sequestration of Demeton-S via capillary interaction. Collectively, these data demonstrate a new and highly tunable class of polymer materials capable of simultaneous sequestration and decontamination of toxic chemicals.
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Rapid Decontamination of Chemical Warfare Agent Simulant with Thermally Activated Porous Polymer Foams
2018Co-Authors: Robert B Balow, Christopher L Mcgann, Grant C Daniels, Jeffrey G. Lundin, Spencer L. Giles, Pehr E Pehrsson, James H. WynneAbstract:Highly porous poly(dicyclopentadiene) (pDCPD) foam was synthesized via ring opening metathesis polymerization and high internal phase emulsion (HIPE) templating. Alkane and alkene moieties within the pDCPD foam oxidized slowly in air to form carbonyl, peroxy, and hydroxyl groups. Heating pDCPD to 85 °C in air accelerated the oxidation of pDCPD, producing reactive peroxy species at reduced time scales, compared to oxidation at room temperature. The oxidized pDCPD foams rapidly sequestered and decontaminated the toxic chemical warfare agent simulant, Demeton-S via oxidation to vinyl, sulfoxide, and sulfone oxidation products. In addition, the porosity and high surface area of the pDCPD HIPE foams likely assists in the sequestration of Demeton-S via capillary interaction. Collectively, these data demonstrate a new and highly tunable class of polymer materials capable of simultaneous sequestration and decontamination of toxic chemicals
Bumjae Lee - One of the best experts on this subject based on the ideXlab platform.
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n chloro hydantoin functionalized polyurethane fibers toward protective cloth against chemical warfare agents
Polymer, 2018Co-Authors: Jihyun Choi, Da Som Moon, Sam Gon Ryu, Bumjae Lee, Wu Bin Ying, Kyung Jin LeeAbstract:Abstract Polyurethane nanofibers functionalized by high amount of N-chloro hydantoin were prepared for the decontamination of chemical warfare agents. Azido-polyurethane was firstly synthesized using azido-polydiol with 4,4′-methylenebis(phenylisocyanate) and 1,4-butanediol via step-addition polymerization. Hydantoin was introduced into the polyurethane via click reaction, followed by electrospinning and chlorination to obtain the decontaminable fibers. This N-chlorinated hydantoin-polyurethane fiber is an active decontaminable species for 2-chloroethyl ethyl sulfide and Demeton-S-methyl, the simulant of chemical warfare agent. The decontamination efficiency of each exhibits 69% and 16% for 2-chloroethyl ethyl sulfide and Demeton-S-methyl, respectively, with molar ratio of 1/1 for 2 h at ambient condition. This N-chlorinated hydantoin-polyurethane fiber exhibited considerable potential as the decontaminable material against toxic chemical warfare agents.