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Article
Cocrystallization phenomenon of polyoxymethylene blend samples between the deuterated and hydrogenated species
The phenomenon of cocrystallization between the deuterated (D) and hydrogenated (H) species of a series of polyoxymethylene blends with various H/D ratios has been established on the basis of the detailed anal...
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Article
Structural Refinement and Extraction of Hydrogen Atomic Positions in Polyoxymethylene Crystal Based on the First Successful Measurements of 2-Dimensional High-Energy Synchrotron X-ray Diffraction and Wide-Angle Neutron Diffraction Patterns of Hydrogenated and Deuterated Species
2-Dimensional X-ray and neutron diffraction patterns have been successfully measured for deuterated and hydrogenated polyoxymethylene (POM) samples obtained by γ-ray induced solid-state polymerization reaction...
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Article
Preparation of Three-Armed Star Polystyrene by Reaction of Prepolymer Having a Terminal Functional Group with Triisocyanate
Polystyrene prepolymers having hydroxyl or amino groups at their ends were prepared by anionic polymerization techniques. The linking reactions of these prepolymers with triisocyanate derived from lysine were ...
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Article
Poly(ethylene oxide) macromonomers
p-Vinylbenzyl-terninated poly(ethylene oxide) macromonomers (M2) were radical-copolymerized with styrene (M1) in benzene, tetrahydrofuran, and methyl isobutyl ketone at 60°C. Relative reactivity of the macromonom...
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Chapter
Study of the Uniaxial Deformation of Rubber Network Chains by Small Angle Neutron Scattering
Small angle neutron scattering (SANS) measurements were performed on poly(isoprene) networks at different uniaxial strains, i.e., 1.0 ≤ λ (extension ratio) ≤ 2.1. The networks were prepared from anionically po...
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Article
Reactivity of Poly(ethylene oxide) Macromonomers in Radical Copolymerization
Poly(ethylene oxide) macromonomers carrying p-vinylbenyl and methacrylate end-groups were prepared by the anionic polymerization of ethylene oxide followed by reactions with p-vinylbenzyl chloride and methacryloy...
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Article
Solvent Effects in Radical Copolymerization between Hydrophilic and Hydrophobic Monomers; 2-Hydroxyethyl Methacrylate and Lauryl Methacrylate
The radical copolymerization of 2-hydroxyethyl methacrylate (HEMA, M1) and lauryl methacrylate (LMA, M2) was investigated at 60°C with AIBN in various solvents including benzene, tetrahydrofuran, tert-butylalcoho...
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Article
Inverse Gas Chromatography on Graft and Random Copolymers of Styrene and 2-Hydroxyethyl Methacrylate
Inverse gas chromatography (IGC) was applied to amphiphilic graft copolymers of poly(2-hydroxyethyl methacrylate) (PHEMA) with polystyrene (PSt) branches using various probes at 160°C. Retention of tetradecane...
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Article
Synthesis and Interfacial Characterization of Graft and Random Copolymers of Styrene and 2-Hydroxyethyl Methacrylate
Polystyrene (PSt) macromonomers with methacrylate end-groups (M1) were copolymerized with 2-hydroxyethyl methacrylate (HEMA, M2) to give amphiphilic graft copolymers with PSt branches. The monomer reactivity rati...
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Article
Anionic Polymerization of tert-Butyl Acrylate
The anionic polymerization of tert-butyl acrylate was studied to determine the experimental conditions for preparing poly(acrylic acid) having narrow molecular weight distributions. If the monomer is carefully pu...
