Kyoto University

Nippon Paper Industries Co., Ltd.

Kyoto Municipal Institute of Industrial Technology and Culture

Dic Corporation

Oji Holdings Corporation

Seiko Pmc Corporation

Takeshi Semba

Hiroyuki Yano

Kazuo Kitagawa

Akihiro Ito

Akihiro Sato

Fumiaki Nakatsubo

Tadafumi Hashimoto

Antonio Norio Nakagaito

Hiroaki Okumura

Hiromasa Kataoka

Tomoaki Yoshimura

Yuko Igarashi

Takahiro Uesaka

Daisuke Kabusaki

Kazuhiro Shintani

An object of the present invention is to provide a fiber-reinforced resin composition in which fibers with good dispersibility and a resin in which the fibers are easily dispersed have been suitably composited; and a method for producing the fiber-reinforced resin composition. Specifically, the object is to provide a fiber-reinforced resin composition that comprises chemically modified CNFs and a thermoplastic resin, and that has improved physical properties due to the suitable compositing of the fibers with the resin; and a method for producing the fiber-reinforced resin composition. The fiber-reinforced resin composition comprises chemically modified CNFs (A) and a thermoplastic resin (B), wherein the chemically modified CNFs and the thermoplastic resin satisfy the following conditions: (a) the ratio R of the solubility parameter (SP) of the chemically modified CNFs (A) to the solubility parameter (SP) of the thermoplastic resin (B), SP/SP, is in the range of 0.87 to 1.88; and (b) the chemically modified CNFs (A) have a degree of crystallinity of 42.7% or higher.

Fiber-reinforced resin composition comprising chemically modified cellulose nanofibers and thermoplastic resin

The present invention provides a method for producing a resin composition, which, by means of simple steps, can uniformly disperse microfibrillated plant fiber in a highly hydrophobic resin and can impart enhanced mechanical strength to a molding material obtained by molding the resin composition. The present invention further provides a resin composition having excellent heat resistance and low linear thermal expansion. The present invention relates to a method for producing a resin composition, the method including a step of mixing a thermoplastic resin or thermosetting resin (A), and modified plant fiber (b) or modified microfibrillated plant fiber (B), in the presence of an organic liquid (C), the modified plant fiber (b) or modified microfibrillated plant fiber (B) being obtained by modification with an alkyl or alkenyl succinic anhydride in a liquid capable of swelling microfibrillated plant fiber (B') or plant fiber (b).

Method for producing resin composition comprising modified microfibrillated plant fibers, and same resin composition

The present invention provides a novel cationized microfibrillated plant fiber and a method for manufacturing the same. A cationic microfibrillated plant fiber that is cationically modified with a quaternary-ammonium-group-containing compound, and that has an average diameter of 4 to 200 nm.

Cationic microfibrillated plant fibre and manufacturing method for same

Growing community of inventors

Kyoto, Japan

Takeshi Semba