End-Group Analysis of Poly(methyl methacrylate) Prepared with Benzoyl Peroxide by 750 MHz High-Resolution1H NMR Spectroscopy

1997 ◽  
Vol 30 (22) ◽  
pp. 6754-6759 ◽  
Author(s):  
Koichi Hatada ◽  
Tatsuki Kitayama ◽  
Koichi Ute ◽  
Yoshio Terawaki ◽  
Takatsune Yanagida
Keyword(s):  
Nmr Spectroscopy ◽  
Methyl Methacrylate ◽  
Benzoyl Peroxide ◽  
Group Analysis ◽  
Poly Methyl Methacrylate ◽  
End Group

scholarly journals Introduction of Stilbene Derivatives and Cinnamate Ester Derivatives at the ω-End Groups of Poly(Methyl Methacrylate) Prepared via RAFT Polymerization

Polymers ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 2449
Author(s):  
Martyn Dobinson ◽  
Philip Hodge ◽  
Trevor Wear
Keyword(s):  
Nmr Spectroscopy ◽  
Methyl Methacrylate ◽  
Raft Polymerization ◽  
19F Nmr ◽  
19F Nmr Spectroscopy ◽  
Poly Methyl Methacrylate ◽  
End Groups ◽  
Stilbene Derivatives

The capping of “living” poly(methyl methacrylate) (PMMA) and “living” polystyrene (PS), both prepared by the RAFT technique, with various olefins was screened using 19F-NMR spectroscopy. The capping of “living” PMMA with a labeled stilbene was as high as 63% and with certain cinnamate esters was essentially quantitative, but the capping of “living” polystyrene with all the olefins investigated was generally poor.

scholarly journals Effect of Ferocene Concentration on the Percent Conversion and Molecular Weight of Poly(Methyl Methacrylate) Homopolymers

2017 ◽  
Vol 14 (2) ◽  
pp. 311-319
Author(s):  
Baghdad Science Journal
Keyword(s):  
Molecular Weight ◽  
Free Radical ◽  
Methyl Methacrylate ◽  
Benzoyl Peroxide ◽  
Radical Polymerization ◽  
Free Oxygen ◽  
Poly Methyl Methacrylate ◽  
Methacrylate Monomer ◽  
Percent Conversion ◽  
Methyl Methacrylate Monomer

This research is addressing the effect of different ferrocene concentration (0.00, 2.15x10-3, 4.30x10-3, 8.60x10-3, and 12.9x10-3) on the bulk free radical polymerization of methyl methacrylate monomer in benzene using benzoyl peroxide as initiator. The polymerization was conducted at 60º C under free oxygen atmosphere. The resulting polymers were characterized by FTIR. The results were compared with the presence and absence of ferrocene at 10% conversion. The %conversion was 3.04% with no ferrocene present in the polymerization medium and its increase to 9.06 with a first lowest ferrocene concentration added, i.e. 2.15 x10-3mol/l. This was positively reflected on the poly(methyl methacrylate) molecular weight measured by viscosity technique, especially in the presence of ferrocene.

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