Fiber-reinforced resin composition containing a chemically modified cellulose nanofibers and the thermoplastic resin

PROBLEM TO BE SOLVED: To provide a fiber reinforced resin composition where a fiber good in dispersibility and a resin easy to disperse the fiber are suitably complexed and a manufacturing method therefor, especially a fiber reinforced resin composition containing a chemical modified CNF and a thermoplastic resin and having improved physical properties by suitably complexing the fiber and the resin and a manufacturing method therefor.SOLUTION: There is provided a fiber reinforced resin composition containing (A) a chemical modified CNF and (B) a thermoplastic resin, where the chemical modified CNF and the thermoplastic resin satisfy following conditions: (a) ratio R (SP/SP) of a solubility parameter of the (B) thermoplastic resin (SP) and a solubility parameter of the (A) chemical modified CNF (SP) in a range of 0.87 to 1.88 and (b) crystallinity index of the (A) chemical modified CNF is 42.7% or more.SELECTED DRAWING: None