Multigraft Copolymers from an Upscalable Synthesis Route‐Material Characteristics and Application Relevant Performance

Tetrafunctional multigraft copolymers based on polyisoprene and polystyrene were prepared by an upscalable pilot-scale anionic synthesis approach, prospectively making this new type of thermoplastic elastomers available for future industrial applications. The materials characterized with respect to their molecular architecture, microphase-separated morphology, thermal mechanical properties under quasi-static conditions as well regarding the damage behavior dynamic deformation. For latter, membrane demonstrators melt pressing. investigated show strain at break values between 1250 % 2000 %, depending number branch points, in connection tensile strength 17 8 N/mm2, respectively. Their ultimate toughness is about 50 higher than that a reference diblock-triblock blend similar chemical composition. They superior hysteresis tests large cycles. Application relevant testing revealed melt-pressed copolymer membranes are less affected surface cracks after long term comparison blend. Based property profile, copolymer-based can be considered suitable candidates substitute components made from silicon PVC. Further, they could serve more effective toughening additives blends. This article protected copyright. All rights reserved