Results 21 to 30 of about 26,198 (157)
Novel Carbazole Skeleton-Based Photoinitiators for LED Polymerization and LED Projector 3D Printing
Molecules, 2017 Radical chemistry is a very convenient way to produce polymer materials. Here, an application of a particular photoinduced radical chemistry is illustrated. Seven new carbazole derivatives Cd1–Cd7 are incorporated and proposed as high performance near-UV
Assi Al Mousawi +10 more
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Molecules, 2021 This work involves the synthesis of hybrid oligomers based on the epoxy methacrylate resin. The EA resin was obtained by the modification of industrial-grade bisphenol A-based epoxy resin and methacrylic acid has been synthesized in order to develop ...
Paulina Bednarczyk +3 more
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Cationic polymerization of styrene using iron-containing ionic liquid catalysts in an aqueous dispersed medium [PDF]
PolímerosThis work aims to study the cationic miniemulsion polymerization of styrene catalyzed by iron-containing imidazolium-based ionic liquids. The polystyrenes had very high number-average molar mass around 1300 kg mol-1 at 85 °C, molar-mass dispersity close ...
Gabriel Victor Simões Dutra +5 more
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Cationic Polymerization of β-Methylstyrenes
KOBUNSHI RONBUNSHU, 2011 EtAlCl2/SnCl4 is an initiating system for the living cationic polymerization of various p-substituted styrenes in the presence of added bases, but neither cis- nor trans-β-methylstyrene (βMeSt) can be polymerized by it. In contrast, after adding p-methylstyrene, the random copolymerization of trans-βMeSt proceeded, producing copolymers with up to 30 ...
YASUOKA, Kosaku +2 more
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Data in Brief, 2018 The data presented in this paper are related to the research article entitled “Effect of ligand structure in the trimethylene carbonate polymerization by cationic zirconocene catalysts: A “naked model” DFT study” (Jitonnom and Meelua, 2017) [1].
Jitrayut Jitonnom, Wijitra Meelua
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eXPRESS Polymer Letters, 2021 Spiroorthocarbonates (SOCs) exhibit good shrinkage resistance with ring-opening polymerization initiated by a cationic photoinitiator, with potential application in reducing the volume shrinkage by C=C double bond polymerization on three-dimensional (3D)
G. H. Lin +6 more
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CYCLIC OLIGOMERS IN THE CATIONIC POLYMERIZATION OF HETEROCYCLES [PDF]
Pure and Applied Chemistry, 1976 Abstract The cationic polymerization of heterocyclic monomers may lead to polymers containing substantial, yet variable amounts of cyclic oligomers. This review gives a survey of the systems where such oligomers have been found. Oligomer formation is generally observed in the polymerization of oxiranes and thiiranes.
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Asian Journal of Pharmaceutical Sciences, 2020 This study demonstrates that our previously reported polywraplex, a synthetic siRNA carrier consisting of a uni-molecular polyplex core of customizable size and a self-assembled tri-block copolymer envelop, may be constructed using dendrimers as the ...
Guang Bai +6 more
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A Cationic Polymerization of Phenylcyclopropane
Kobunshi Kagaku, 1965 フェニルシクロプロパンをカチオン重合して得られるポリマーの構造は予期した開環重合体とは異なり, ベンゼン核を主鎖中に含むことが判明した。その構造, 重合機構について検討を行なった。フェニルシクロプロパンは0℃ 以上, CH2Cl2中, AlCl3, BF3などによってすみやかに重合し, 低分子量ポリマーを与える。重合反応は逐次的に進行し, ポリマー間の反応でも生長が起こるのが認められた。ポリマーのIR, NMR, UVスペクトル, C-メチル基の化学分析, ポリマーの酸化などからポリマーの構造は主として下記のようなものであることが判明した。重合機構としてはシクロプロピル基の開環で生じるエチルベンジルカチオンのベンゼン核へのFriedel-Crafts反応のくり返しが考えられる。
Shunsuke Murahashi +2 more
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NIPPON GOMU KYOKAISHI, 2011 The final installment of the three-part series of a special lecture for living cationic polymerization focuses on recent progress in living polymerization of isobutene and styrene derivatives. Unique and new initiating systems for living polymerization have been developed for isobutene and styrenes. This final article focuses on active living catalysts
KANAOKA, Shokyoku, AOSHIMA, Sadahito
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