Supplementary Material: Supporting analytical data from Better together: synergy in nanocellulose blends MautnerAndreas MayerFlorian HervyMartin LeeKoon-Yang BismarckAlexander 2017 TEM image TEMPO CNF, results of Mw determination of (r-)BC and conductometric titration, FT-IR spectra of pulp and TEMPO-CNF, all single results of BC nanopaper tensile tests and a schemactic of freacture toughness samples as well as a photograph of actual samples.