Thermally-healable network solids of sulfur-crosslinked poly(4-allyloxystyrene).

ABSTRACT: Network polymers of sulfur and poly(4-allyloxystyrene), PAOS _x (x = percent by mass sulfur, where x is varied from 10-99), were prepared by reaction between poly(4-allyloxystyrene) with thermal homolytic ring-opened S₈ in a thiol-ene-type reaction. The extent to which sulfur content and crosslinking influence thermal/mechanical properties was assessed. Network materials having sulfur content below 50% were found to be thermosets, whereas those having >90% sulfur content are thermally healable and remeltable. DSC analysis revealed that low sulfur-content materials exhibited neither a T _g nor a T _m from -50 to 140 °C, whereas higher sulfur content materials featured T _g or T _m v

SUBMITTER: Thiounn T 

PROVIDER: S-EPMC9090968 | biostudies-literature | 2018 Nov

REPOSITORIES: biostudies-literature