The obsd. sepn. of 2 conformers in the 13C NMR of 2 fractions of poly[(S)-4-methyl-1-hexene] [29504-00-5] cannot be explained easily unless configurational differences are present. Such differences may result from differences in steric defects in the side chain and/or in the backbone (degree of tacticity). The extent of such defects must be below the sensitivity limits used. Dynamic parameters in relaxation are also discussed.
13C n.m.r. study of optically active polymers: 2. Relaxations in poly [(S)-4-methyl-1-hexene] / L., Acquaviva; Conti, Filippo; M., Paci; Delfini, Maurizio; A. L., Segre; E., Benedetti; E., Chiellini; F., Ciardelli. - In: POLYMER. - ISSN 0032-3861. - STAMPA. - 19:12(1978), pp. 1453-1457. [10.1016/0032-3861(78)90101-5]
13C n.m.r. study of optically active polymers: 2. Relaxations in poly [(S)-4-methyl-1-hexene]
CONTI, Filippo;DELFINI, Maurizio;
1978
Abstract
The obsd. sepn. of 2 conformers in the 13C NMR of 2 fractions of poly[(S)-4-methyl-1-hexene] [29504-00-5] cannot be explained easily unless configurational differences are present. Such differences may result from differences in steric defects in the side chain and/or in the backbone (degree of tacticity). The extent of such defects must be below the sensitivity limits used. Dynamic parameters in relaxation are also discussed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
