Published : 2022-08-23

Modification of styrene-isoprene-styrene triblock copolymer with a core-shell filler

Abstract

Mechanical properties of composite materials based on triblock poly(styrene-b-isoprene-b-styrene) copolymers (SIS) and modified with two different grades of core-shell fillers (core - silsesquioxane microgel, shell - grafted polystyrene, particle diameters 15.7 and 17.7nm, respectively). Significant improvement - almost 60% increase in tensile strength, relative elongation at break reaching 700% - was observed in case of a high molecular weight (Mw) copolymer at the maximal filler concentration of about 2 wt. % and longer chains of the polystyrene-shell. The rheological properties of nanocomposites differed with respect to the non-modified copolymer - softening of the material at higher temperatures was noticed.


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Jakuczek, L., Gutmann, J. S., Herrmann, C., & Żuchowska, D. (2022). Modification of styrene-isoprene-styrene triblock copolymer with a core-shell filler. Polimery, 53(11-12), 888-892. Retrieved from https://ichp.vot.pl/index.php/p/article/view/1381