The 13C NMR spectra of isotactic poly[(S)-4-methyl-1-hexene] [26680-37-5], isotactic poly[(R)-4-methyl-1-hexene] [56781-40-9], and isotactic poly[(R),(S)-4-methyl-1-hexene] [33409-74-4] prepd. by Ziegler-Natta catalysis were discussed. Polymer fractions with different stereoregularities and mol. wts. and derived from monomers with high optical purity had in their spectra differences which were attributed to conformational effects. Stereoselectivity was obsd. in polymers from the racemic monomer.
13C n.m.r. study of optically active polymers: poly(4-methyl-1-hexene) / Conti, Filippo; L., Acquaviva; E., Chiellini; F., Ciardelli; Delfini, Maurizio; A. L., Segre. - In: POLYMER. - ISSN 0032-3861. - STAMPA. - 17:10(1976), pp. 901-904. [10.1016/0032-3861(76)90257-3]
13C n.m.r. study of optically active polymers: poly(4-methyl-1-hexene)
CONTI, Filippo;DELFINI, Maurizio;
1976
Abstract
The 13C NMR spectra of isotactic poly[(S)-4-methyl-1-hexene] [26680-37-5], isotactic poly[(R)-4-methyl-1-hexene] [56781-40-9], and isotactic poly[(R),(S)-4-methyl-1-hexene] [33409-74-4] prepd. by Ziegler-Natta catalysis were discussed. Polymer fractions with different stereoregularities and mol. wts. and derived from monomers with high optical purity had in their spectra differences which were attributed to conformational effects. Stereoselectivity was obsd. in polymers from the racemic monomer.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
