PE-CPE blends and their graphene oxide nanocomposites with reduced low temperature brittleness

摘要: The low-temperature flexibility of polyethylene (PE)–chlorinated (CPE) blends and their composites with a small amount graphene oxide filler was studied. Quantitative height variation in the AFM images, rheological as well fracture analyses were employed to gain insights into generation matrix phase. semi-crystalline CPE (CPE25) polymer did not induce viscoelastic behavior at temperatures lower than glass transition temperature PE, whereas amorphous (CPE35) had completely different behavior. samples CPE35 could be sufficiently hardened even −180 °C remained too soft for cryosectioning. Therefore, compression, which results 30–60 % reduction length along cutting direction no change dimension perpendicular it, very prominent both thin section block face sample. higher degree compression due additional effect weak interactions consequence, topographical variations led pull out during sectioning. It also confirmed using analysis that (and 10 content) phase immiscibility suspected concentrate near leading chlorine-rich phases. addition lead reduced retained modulus similar pure polymer. mechanical containing these still flexible −195 °C.