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13 results on '"Su Jiahui"'

4. Numerical Investigation on Granular Flow from a Wedge-Shaped Feed Hopper Using the Discrete Element Method

Author

Wu Tianxiang, Liu Siqi, Zhao Xianqiong, Su Jiahui, Chen Hui, Chi Liu, and Yi Lun Liu

Subjects
Materials science, General Chemical Engineering, 02 engineering and technology, General Chemistry, Mechanics, 021001 nanoscience & nanotechnology, Wedge (geometry), Industrial and Manufacturing Engineering, Discrete element method, Granulation, 020401 chemical engineering, Flow (mathematics), Particle size, 0204 chemical engineering, 0210 nano-technology
Published
2018

7. Photo-induced controlled radical polymerization of methyl methacrylate mediated by photosensitive nitroxides

Author

Qin You, Yanyan Cui, Junqi Hu, Su Jiahui, Yingyin Chen, and Xiaoxuan Liu

Subjects
Nitroxide mediated radical polymerization, Polymers and Plastics, Chemistry, Organic Chemistry, Radical polymerization, Chain transfer, Photochemistry, Living free-radical polymerization, Chain-growth polymerization, Cobalt-mediated radical polymerization, Polymer chemistry, Materials Chemistry, Reversible addition−fragmentation chain-transfer polymerization, Ionic polymerization
Abstract

Photosensitive nitroxides bearing different chromophore groups (benzophenone, naphthalene and quinoline) were synthesized and characterized. The photochemical properties of the synthesized products were investigated by UV−visible and fluorescence measurements. The results indicated that an efficient energy transfer from the chromophore moiety to the nitroxide radical moiety could occur within the molecular distances. The photo-induced nitroxide-mediated polymerization of methyl methacrylate (MMA) was performed using the photosensitive nitroxide/2,2-dimethoxy-2-phenyl acetophenone as a bimolecular mediated system. The controlled character of the polymerization was confirmed by the linear tendency of molecular weight evolution with narrow molecular weight distribution (1.3−1.4). The experimental conditions, such as type of chromophore, initiator concentration and molar ratio of initiator/nitroxide, are discussed for a better understanding of the mechanism of the controlled polymerization. Using the polymerization products as macroinitiator, the chain extension reaction of MMA turned out to be able to re-initiate further polymerization of the monomer. © 2014 Society of Chemical Industry

Published
2015

8. UV‐activated hydrosilylation of (Me‐Cp)Pt(Me) 3 : Enhanced photocatalytic activity, polymerization kinetics, and photolithography

Author

Xiaoxuan Liu, Yiling Bei, Hongping Xiang, Su Jiahui, Lu Xi, and Zhu Liu

Subjects
Materials science, Polymers and Plastics, Hydrosilylation, Kinetics, General Chemistry, Photochemistry, Surfaces, Coatings and Films, law.invention, Catalysis, chemistry.chemical_compound, Natural rubber, chemistry, law, visual_art, Polymerization kinetics, Materials Chemistry, visual_art.visual_art_medium, Photocatalysis, Photolithography
Published
2019

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