Light scattering measurements were performed for poly(vinylacetate), PVAc, sample in toluene at room temperature. The radius of gyration <S2>1/2 and second virial coefficient (A2) for seven fractions and crude sample was determined by using the light scattering techniques such as turbidity, zimm plot method and dissymmetry. From the data it was concluded (i) that PVAc molecules have random coil conformation in toluene at 25-degrees-C (ii). The second virial coefficient depends strikingly on molecular weight for a given solvent (iii) there is also a good correlation between mean square radius of gyration and molecular weight.
BASHIR AHMAD ,NOOR UL BASAR ,NOOR AHAMD ,
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