Anionic Polymerization of Acrylic Monomers. 18. NMR Characterization of a Unique Complex between Lithium 2-(2-Methoxyethoxy) Ethoxide and Methyl .alpha.-Lithioisobutyrate

1994 ◽  
Vol 27 (18) ◽  
pp. 4896-4901 ◽  
Author(s):  
Jin-Shan Wang ◽  
Robert Jerome ◽  
Philippe Teyssie
Keyword(s):  
Anionic Polymerization ◽  
Nmr Characterization ◽  
Acrylic Monomers

Synthesis and characterization of poly(ethyl glyoxylate) – a new potentially biodegradable polymer

e-Polymers ◽  
2003 ◽  
Vol 3 (1) ◽  
Author(s):  
Fabrice Burel ◽  
Laetitia Rossignol ◽  
Pascale Pontvianne ◽  
Jonas Hartman ◽  
Nicole Couesnon ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Anionic Polymerization ◽  
Phenyl Isocyanate ◽  
Bernoulli Process ◽  
Molecular Weights ◽  
Nmr Characterization ◽  
End Capping ◽  
Lower Glass Transition Temperature ◽  
C Nmr

Abstract Poly(ethyl glyoxylate) (PEtG), a new polyacetal, was synthesized via anionic polymerization in CH2Cl2. End-capping was achieved using phenyl isocyanate. Average molecular weights in the range of 9000 - 216 000 were obtained. 1H and 13C NMR characterization highlight the non-stereoregularity of PEtG. The polymer is quasi-atactic and the polymerization almost followed a Bernoulli process. Compared to its homologue poly(methyl glyoxylate), PEtG exhibits enhanced thermal stability (>200°C) and a lower glass transition temperature, Tg. Molecular weight influences Tg, but does not affect thermal stability.

Anionic polymerization of acrylic monomers. 8. Synthesis and characterization of (meth)acrylic end-functionalized polymers: macromonomers and telechelics

1992 ◽  
Vol 25 (21) ◽  
pp. 5578-5584 ◽  
Author(s):  
Sunil K. Varshney ◽  
Philippe Bayard ◽  
Christian Jacobs ◽  
Robert Jerome ◽  
Roger Fayt ◽  
...  
Keyword(s):  
Anionic Polymerization ◽  
Functionalized Polymers ◽  
Synthesis And Characterization ◽  
Acrylic Monomers

NMR characterization of complex natural products: Assigning novel, proton-deficient alkaloid scaffolds

Planta Medica ◽  
2016 ◽  
Vol 81 (S 01) ◽  
pp. S1-S381
Author(s):  
KR Gustafson ◽  
STS Chan ◽  
D Milanowski
Keyword(s):  
Natural Products ◽  
Nmr Characterization

Synthesis and 31 P NMR characterization of new low toxic highly sensitive pH probes designed for in vivo acidic pH studies

2002 ◽  
Vol 10 (5) ◽  
pp. 1451-1458 ◽  
Author(s):  
Sophie Martel ◽  
Jean-Louis Clément ◽  
Agnès Muller ◽  
Marcel Culcasi ◽  
Sylvia Pietri
Keyword(s):  
Acidic Ph ◽  
Highly Sensitive ◽  
Nmr Characterization ◽  
Low Toxic ◽  
Ph Probes
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