000			01331nam a2200157Ia 4500
008			220216s9999 xx 000 0 und d
100			_aMuller H G
245		0	_aSimultaneous determination of particle and density distributions of dispersions by analytical ultracentrifugation
260			_bProg. Coll and Polym. Sci _c1995
300			_a114-119
500			_aSource Year: 1996
520			_aMixtures of disperrsions and grafted latices are usually chemically heterogeneous and have not only a distribution of partice size but also of particle density. The analysis of such products by analytical ultracentrafugation, by determining the sedimentation coefficient distributions of the sample in two isorefractive dispersing media of different densities, is described. It is shown to be possible to determine the particle size and particle density distributions simultaneously ie for each particle size of the size distribution, the correlated particle density can be determined. This is demonstrated for a number of samples. The method is shown to represent a major development in the study of the structure of more complicated dispersions. The composition of latex mixtures can thus be analysed and a valuable insight gained into the mechanism of grafting reactions.
700			_aHerrmann F
856			_uIRRDB
942			_cJS
999			_c68734 _d68734