T. Jiang et al., Study on the miscibility of dynamically vulcanized EPDM/PP blend by positron annihilation spectroscopy, CHIN J POLY, 18(2), 2000, pp. 123-128
Positron annihilation spectroscopy (PAS) was utilized to investigate the re
lationship between the free-volume hole properties and miscibility of dynam
ically vulcanized EPDM/PP blend. The results showed that the noncrystalline
region of PP and EPDM in the blend was partially miscible and the miscibil
ity of the blend became worse when the weight percent of EPDM was <50%. Thi
s was also demonstrated by DMTA and mechanical properties of the blends wit
h various compositions.