Influence of topological structure on mechanical property of recyclable bio-based hyperbranched epoxy/carbon fiber fabric composites

•Bio-based degradable hyperbranched epoxy resins (ETFP-n) were firstly synthesized by biomass materials.•The topological properties of ETFP-n were investigated.•The ETFP-n/CF composites show high interfacial strength.•The carbon fibers fabric can be intactly recycled.•An interfacial strengthening mechanism controlled by topological and rheological property has been represented.