The kenaf leather fiber and synthesis the manner which produces the coupling agent of the kenaf leather fiber in order to use for the production of the composite material which consists of high-molecular

摘要

A composite material is provided which is lightweight, mechanically strong, and excellent in formability and water resistance, and is capable of reducing an environmental burden. A production method of the composite material composed of a natural vegetable fiber and a synthetic polymer includes chemically bonding a molecular chain of the synthetic polymer to a surface of the natural vegetable fiber; kneading the chemically bonded fiber and a synthetic polymer of a type one of identical to and different from the synthetic polymer used in the chemical bonding; and forming the obtained kneaded material into a predetermined shape.