Interfacially modified LDPE/GTR composites with non-polar elastomers: From microstructure to macro-behavior

摘要: Abstract This paper provides some new insights into the mechanism of interaction and modifications in thermoplastic composites based on low density polyethylene (LDPE), ground tire rubber (GTR) non-polar elastomer. The were prepared using a co-rotating twin-screw extruder at variable LDPE/GTR ratio constant elastomer content. Two types commercial applied: styrene-butadiene-styrene (SBS) block copolymers (Kraton ® ) with different topologies (linear/branched) partially cross-linked butyl rubbers (Kalar Mooney viscosities. Processing characteristics, static mechanical properties (tensile strength, elongation break, hardness), dynamic properties, thermal morphology resulting investigated. Microstructure analysis shows that modification elastomers caused encapsulation GTR particles within phase. phenomenon has significant influence macro-behavior blends. results indicate SBS copolymer improves interfacial interactions between LDPE, which enhances composites. On other hand, showed partial compatibility LDPE particles.