000			01185nam a2200205Ia 4500
008			220216s9999 xx 000 0 und d
100			_aHarris R K
245		0	_aProton NMR studies of molecular level mobility in vulcanised and epoxidised natural rubber
260			_bPolymer International _c1996
300			_a63-71
500			_aSource Year: 1996
520			_aProton spin-lattice relaxations in the laboratory and rotating frames, together with transverse relaxation (free induction decay), have been measured for natural and epoxidised rubber, plus a series of vulcanized samples. The data have been analysed by fitting procedures to give characteristic times which are discussed in terms of the mobility of the various parts of the samples, and of their compositions (including the effects of paraffin wax and oil additives). Interpretation has been aided by recording free induction decays following a period of spin-locking. 13C magic-angle spinning spectra have also been measured.
650			_aEpoxidised natural rubber
650			_aProton NMR
650			_aVulcanised natural rubber
700			_aSay B J
700			_aSoon Ng
856			_uIRRDB
942			_cJS
999			_c66075 _d66075