The Experts below are selected from a list of 45234 Experts worldwide ranked by ideXlab platform
Shiyu Fu - One of the best experts on this subject based on the ideXlab platform.
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homogeneous grafting poly Methyl Methacrylate on cellulose by atom transfer radical polymerization
Carbohydrate Polymers, 2012Co-Authors: Jinfeng Zhong, Xinsheng Chai, Shiyu FuAbstract:Abstract Methyl Methacrylate (MMA) was homogeneous-grafted on a cellulose based macro-initiator, cellulose chloroacetyl chloride by the atom transfer radical polymerization (ATRP) at a mild reaction temperature. The synthesized cellulose graft copolymers were characterized by FT-IR, 1 H NMR and 13 C NMR spectroscopies. The linear first-order kinetics of monomer conversion was determined by headspace gas chromatography. The molecular weights and their distributions of the poly (Methyl Methacrylate) (PMMA) grafted onto the cellulose backbone were determined by gel permeation chromatography. The results confirmed that the generation of the cellulose grafted PMMA at 50 °C in the given solvent system was a controlled/living ATRP process.
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a full evaporation headspace gas chromatographic method for determination of monomer conversion in cellulose graft poly Methyl Methacrylate
Carbohydrate Polymers, 2011Co-Authors: Jinfeng Zhong, Xinsheng Chai, Shiyu FuAbstract:Abstract This paper reports on a full evaporation headspace gas chromatographic method for rapid determination of monomeric Methyl Methacrylate (MMA) in the cellulose graft poly-Methyl Methacrylate (PMMA) via an atom transfer radical polymerization process. The data show that a near-complete mass transfer of MMA from the very small liquid sample size (
Wha-tzong Whang - One of the best experts on this subject based on the ideXlab platform.
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comparison of the recording dynamics of phenanthrenequinone doped poly Methyl Methacrylate materials
Optics Communications, 2001Co-Authors: Jose Mumbru, Iouri Solomatine, Wei Zheng Chen, Demetri Psaltis, Wha-tzong WhangAbstract:A comparative analysis of phenanthrenequinone-doped poly(Methyl Methacrylate) materials fabricated at California Institute of Technology and National Chiao Tung University is performed in order to understand the differences exhibited in their recording and baking dynamics.
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phenanthrenequinone doped poly Methyl Methacrylate photopolymer bulk for volume holographic data storage
Optics Letters, 2000Co-Authors: Wei Zheng Chen, Wha-tzong WhangAbstract:We present the design and fabrication of a phenanthrenequinone-doped poly(Methyl Methacrylate) photopolymer material. Large blocks of samples were made, and the material showed negligible shrinkage after optical exposures. We recorded and reconstructed 250 holograms at a single spot, using a 1‐cm3 block.
Bunichiro Yamada - One of the best experts on this subject based on the ideXlab platform.
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chain transfer and efficiency of end group introduction in free radical polymerization of Methyl Methacrylate in the presence of poly Methyl Methacrylate macromonomer
Macromolecular Rapid Communications, 2004Co-Authors: Kazuki Miyake, Per B Zetterlund, Bunichiro YamadaAbstract:Experimental and modeling studies of addition fragmentation chain transfer (AFCT) during radical polymerization of Methyl Methacrylate in the presence of poly(Methyl Methacrylate) macrocromonomer with 2-carbomethoxy-2-propenyl ω-ends (PMMA-CO 2 Me) at 60 C are reported. The results reveled that AFCT involving PMMA-CO 2 Me formed in situ during Methyl Methacrylate polymerization has a negligible effect on the molecular weight distribution.
Jinfeng Zhong - One of the best experts on this subject based on the ideXlab platform.
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homogeneous grafting poly Methyl Methacrylate on cellulose by atom transfer radical polymerization
Carbohydrate Polymers, 2012Co-Authors: Jinfeng Zhong, Xinsheng Chai, Shiyu FuAbstract:Abstract Methyl Methacrylate (MMA) was homogeneous-grafted on a cellulose based macro-initiator, cellulose chloroacetyl chloride by the atom transfer radical polymerization (ATRP) at a mild reaction temperature. The synthesized cellulose graft copolymers were characterized by FT-IR, 1 H NMR and 13 C NMR spectroscopies. The linear first-order kinetics of monomer conversion was determined by headspace gas chromatography. The molecular weights and their distributions of the poly (Methyl Methacrylate) (PMMA) grafted onto the cellulose backbone were determined by gel permeation chromatography. The results confirmed that the generation of the cellulose grafted PMMA at 50 °C in the given solvent system was a controlled/living ATRP process.
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a full evaporation headspace gas chromatographic method for determination of monomer conversion in cellulose graft poly Methyl Methacrylate
Carbohydrate Polymers, 2011Co-Authors: Jinfeng Zhong, Xinsheng Chai, Shiyu FuAbstract:Abstract This paper reports on a full evaporation headspace gas chromatographic method for rapid determination of monomeric Methyl Methacrylate (MMA) in the cellulose graft poly-Methyl Methacrylate (PMMA) via an atom transfer radical polymerization process. The data show that a near-complete mass transfer of MMA from the very small liquid sample size (
Demetri Psaltis - One of the best experts on this subject based on the ideXlab platform.
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comparison of the recording dynamics of phenanthrenequinone doped poly Methyl Methacrylate materials
Optics Communications, 2001Co-Authors: Jose Mumbru, Iouri Solomatine, Wei Zheng Chen, Demetri Psaltis, Wha-tzong WhangAbstract:A comparative analysis of phenanthrenequinone-doped poly(Methyl Methacrylate) materials fabricated at California Institute of Technology and National Chiao Tung University is performed in order to understand the differences exhibited in their recording and baking dynamics.
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characterization of phenanthrenequinone doped poly Methyl Methacrylate for holographic memory
Optics Letters, 1998Co-Authors: Gregory J. Steckman, Iouri Solomatine, Gan Zhou, Demetri PsaltisAbstract:The holographic recording characteristics of phenanthrenequinone- (PQ-) doped poly(Methyl Methacrylate) are investigated. The exposure sensitivity is characterized for single-hologram recording, and the M/# is measured for samples as thick as 3 mm. Optically induced birefringence is observed in this material.