Small‐angle x‐ray and neutron scattering studies of amorphous polymer blends
1982; Wiley; Volume: 20; Issue: 9 Linguagem: Inglês
10.1002/pol.1982.180200908
ISSN1542-9385
AutoresThomas P. Russell, Richard S. Stein,
Tópico(s)Polymer Science and PVC
ResumoAbstract Dilute mixtures of poly(ε‐caprolactone) (PCL) in poly(vinyl chloride) (PVC), poly( p ‐iodostyrene) (P p IS) in polystyrene, and deuterated polystyrene (d‐PS) in protonated poly( o ‐chlorostyrene) (P o CIS) were investigated by means of small‐angle x‐ray scattering and small‐angle neutron scattering. The radii of gyration of PCL in PVC and of d‐PS in P o CIS were found to be expanded over the θ values by 50 and 30%, respectively. Values of the second virial coefficient were positive although errors prevented definitive evaluation of the interaction parameter. P p IS was found to aggregate, with both the radius of gyration and molecular weight increasing with concentration. Concentrated mixtures of PCL and PVC were also investigated by using the Debye–Bueche correlation function analysis. Correlation distances indicated good mixing throughout the entire composition range.
Referência(s)