Chemically modified cellulose fine fiber and high heat resistant resin composite containing chemically modified cellulose fine fiber

摘要

PROBLEM TO BE SOLVED: To provide a cellulose fine fiber having high mechanical properties and heat aging resistance (particularly yellowing resistance), which can withstand molding and use in members for in-vehicle use, home electric appliance use and the like, and a resin composite containing the same. SOLUTION: The weight average molecular weight (Mw) is 100,000 or more, the ratio (Mw / Mn) of the weight average molecular weight (Mw) and the number average molecular weight (Mn) is 6 or less, and the alkali soluble content is 12 mass% or less. And a chemically modified cellulose fine fiber having a crystallinity of 60% or more, and a resin composite containing the chemically modified cellulose fine fiber and a resin. [Selection diagram] None