scholarly journals Stereospecific Polymerization of Stereoregular Poly(methyl methacrylate) Macromonomer and Determination of Main-Chain Tacticity of Resulting Polymacromonomer

1996 ◽  
Vol 28 (2) ◽  
pp. 150-154 ◽  
Author(s):  
Tatsuki Kitayama ◽  
Osamu Nakagawa ◽  
Koichi Hatada
Keyword(s):  
Methyl Methacrylate ◽  
Main Chain ◽  
Poly Methyl Methacrylate ◽  
Stereospecific Polymerization

Poly(methyl methacrylate)-modified cellulose fibers patterned with highly selective chromogenic reagent for rapid and trace determination of Co2+ in water

2018 ◽  
Vol 10 (36) ◽  
pp. 4454-4462 ◽  
Author(s):  
Liyakat Hamid Mujawar ◽  
Mohammad Soror El-Shahawi
Keyword(s):  
Methyl Methacrylate ◽  
Polymethyl Methacrylate ◽  
Filter Paper ◽  
Cellulose Fibers ◽  
Trace Determination ◽  
Poly Methyl Methacrylate ◽  
Chromogenic Reagent ◽  
One Step ◽  
Modified Cellulose

A simple one-step assay for the trace determination of Co2+ was developed on filter paper modified with solubilized polymethyl methacrylate (PMMA) and arrays of 3-[(2-mercapto-vinyl)-hydrazono]-1,3-dihydro-indol-2-one (MHDI) reagent.

Nuclear magnetic resonance studies of ionomers. 5. Spectra of poly (methyl methacrylate-co-4-vinyl pyridine), poly (methyl methacrylate-co-2-methyl-5-vinyl pyridine), and their quaternized derivatives

1987 ◽  
Vol 65 (8) ◽  
pp. 1873-1881 ◽  
Author(s):  
Almeria Natansohn ◽  
Adi Eisenberg
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Methyl Methacrylate ◽  
Pyridine Ring ◽  
Main Chain ◽  
Structural Units ◽  
Poly Methyl Methacrylate ◽  
Nuclear Magnetic Resonance Spectra ◽  
Vinyl Pyridine ◽  
Nuclear Magnetic

Proton and carbon nuclear magnetic resonance spectra in solution of poly (methyl methacrylate-co-4-vinyl pyridine), poly(methyl methacrylate-co-2-methyl-5-vinyl pyridine), and of their derivatives obtained by quaternization with methyl iodide are presented. The vinyl pyridine structural units content of the samples is ca. 10%. In different solvents, the spectra provide information about the sequence distribution and configuration of the copolymers. A "coisotactic" alternating addition, defined as the probability of finding a methoxy group and a pyridine ring neighboring each other on the same side of the main chain, can be estimated as about 0.5 in both cases. This information arises from the splitting of the aromatic and of the methoxy signals (both in proton and carbon spectra). As expected, quaternization does not affect the copolymer configuration. Heteronuclear-correlated two-dimensional spectra can help in assigning the spectra.

Sign in / Sign up

Export Citation Format

Share Document