ISSN:
1435-1536
Keywords:
Polymerization
;
oligomerization
;
norbornene
;
PdCl2 catalysis in water
;
emulsions
;
latex
;
13C NMR
;
tacticity
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract Polymerization of norbornene using PdCl2 as catalyst is generally carried out at high temperatures in the absence of solvent. Low yields of polymer with relatively undefined molecular weights are obtained under these conditions. We describe the first example of polymerization of norbornene in water dispersion or aqueous emulsions catalyzed by PdCl2. Good yields of polymers and oligomers were obtained. Furthermore, in aqueous emulsions, novel microlatex which cannot be obtained by radical or ionic routes were synthesized, with particles sizes (≈10 nm.) generally only observed in microemulsion polymerizations. The stereochemistry of the polymers of low molecular weight was partially elucidated by13C NMR.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00659294
Permalink
