The homogeneous non-catalytic hydrogenation of cis-1,4 poly(isoprene), isotactic cis-1,4 poly(1,3-pentadiene) and syndiotactic cis-1,4 poly(1,3-pentadiene) with diimide, formed by thermal decomposition of para-toluenesulfonylhydrazide, is examined. Perfectly alternating ethylene/propylene copolymers having different tacticity (i.e., isotactic and syndiotactic), which are difficult to synthesize by stereospecific copolymerization of the corresponding monomers, are obtained. Both isotactic and syndiotactic alternating ethylene/propylene copolymers are amorphous, with very low glass transition temperatures.
Isotactic and syndiotactic alternating ethylene/propylene copolymers obtained through non-catalytic hydrogenation of highly stereoregular cis-1,4 poly(1,3-diene)s / G. Ricci, A.C. Boccia, G. Leone, I. Pierro, G. Zanchin, M. Scoti, F. Auriemma, C. De Rosa. - In: MOLECULES. - ISSN 1420-3049. - 22:5(2017), pp. 755.1-755.13. [10.3390/molecules22050755]
Isotactic and syndiotactic alternating ethylene/propylene copolymers obtained through non-catalytic hydrogenation of highly stereoregular cis-1,4 poly(1,3-diene)s
G. Zanchin;
2017
Abstract
The homogeneous non-catalytic hydrogenation of cis-1,4 poly(isoprene), isotactic cis-1,4 poly(1,3-pentadiene) and syndiotactic cis-1,4 poly(1,3-pentadiene) with diimide, formed by thermal decomposition of para-toluenesulfonylhydrazide, is examined. Perfectly alternating ethylene/propylene copolymers having different tacticity (i.e., isotactic and syndiotactic), which are difficult to synthesize by stereospecific copolymerization of the corresponding monomers, are obtained. Both isotactic and syndiotactic alternating ethylene/propylene copolymers are amorphous, with very low glass transition temperatures.File | Dimensione | Formato | |
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