Investigation of molecular mobility in polysulphonamide

Abstract

The dielectric and nuclear magnetic relaxation techniques were used for investigating the molecular mobility in polysulphonamide. The dielectric method revealed a t least three transitions, one of which is attributed to the adsorbed water. The temperature dependence of the spin-lattice relaxation time shows two processes, the low temperature one being due t o the formation of complexes between the phenyl rings and oxygen. Untersuchung der molekularen Beweglichkeit in PolysulfonamidMittels dielektrischer und kernmagnetischer Relaxationsmessungen wurde die molekulare Beweglichkeit in Polysulfonamid untersucht. Die dielektrische Methode ergab mindestens drei Ubergange, von denen einer dem adsorbierten Wasser zugeschrieben wird. Die Temperaturabhangigkeit der Spin-Gitter-Relaxation zeigt zwei Prozesse, von denen der bei niedrigerer Temperatur auf die Bildung von Komplexen zwischen den Phenylringen und Sauerstoff zuruckgefuhrt wird. Hccmaoeanue ntofiexympnoii no3euxnocrnu e noaucyfia@onuuae MeTOAOM JJ,HaJleKTpHW?CKO& II Up$pHO& MarHHTHOfi PeJlaKCaqHH HCCJleHOBaHa MOJIeKyJlUpHaR IlOABHH(H0CTb B IlOJlMCyJIb@OHaMElAe. n0 ~HaJIeKTpH9eCKOMy MeTOAY 0 6~a p y m e~o KaK MHHHMYM 3 llepeXOAa, IlpHWM OHHH IT3 HElX CBB3MBaeTCR C COp6HpOBaHHOi BOHOfi. TeMllepaTypHaR 3aBHCHMOCTb BpeMeHH CIMH-peIUeTOuHO8 PeJlaKCaUHH 06Hapy?€iHBaeT ABa IlpOqeCCa, IfpHseM HH3HOTeMIlt?paTypHbI~ npOqeCC 06yCJlOBJleH 06pa30BaHHeM KOMllJleKCOB @eHHJIbHbIX KOJleq C KHWIOPOAOM. Copolymerization of cyclopropylbutadienes with dienes in the presence of coordinating systemsThe copolymerization of mono-and di-cyclopropylbutadienes with dienes in the presence of titanium and vanadium catalyst systems of ZIEGLER-NATTA type has been investigated. A relationship between cyclopropyl-containing structures of the monomers and their reactivities was found to exist in the copolymerization of butadiene and isoprene.As compared with butadiene and alkylbutadienes an increased reactivity of the monomers investigated is supposed to result from the conjugation of cyclopropyl groups with n-electrons in the diene system.