Cessation of Spherulitic Growth in Phase-Separating Polyolefin Blends
Haonan Wang, Charles C. Han
The Blends of two statistical copolymers of ethylene/hexene (PEH) and ethylene/butene (PEB) exhibit both phase separation and crystallization transitions. Using optical microscopy (OM) and small angle light scattering (SALS), we demonstrate that the simultaneous phase separation and crystallization in olefin copolymer blends leads to novel morphology evolutilon. OM shows that spherulites grow at early times and cease to grow before they fill the volume. SALS shows the coexistence of the spherulitic pattern and spinodal ring indicating that the phase separation morphology is responsible for the cessation of the spherulitic growth.
American Chemical Society; Division of Polymer Chemistry, Meeting | | | American Chemical Society (ACS)
August 1, 2000
crystallization, phase-separation, polymer blend, polyolefin, small angle light scattering, spherulites
and Han, C.
Cessation of Spherulitic Growth in Phase-Separating Polyolefin Blends, American Chemical Society; Division of Polymer Chemistry, Meeting | | | American Chemical Society (ACS), Undefined
(Accessed June 5, 2023)