US 12,292,382 B2
Crystallinity measurement device, resin-containing material manufacturing device, crystallinity measurement method, and resin-containing material manufacturing method
Nobuyuki Kamihara, Tokyo (JP); Naomoto Ishikawa, Tokyo (JP); Kiyoka Takagi, Tokyo (JP); Sota Kamo, Tokyo (JP); Makoto Yamaguchi, Akita (JP); Mitsutoshi Jikei, Akita (JP); Kazuya Matsumoto, Akita (JP); and Mikio Muraoka, Akita (JP)
Assigned to MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo (JP); and AKITA UNIVERSITY, Akita (JP)
Appl. No. 17/280,038
Filed by MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo (JP); and AKITA UNIVERSITY, Akita (JP)
PCT Filed Sep. 20, 2019, PCT No. PCT/JP2019/037094
§ 371(c)(1), (2) Date Mar. 25, 2021,
PCT Pub. No. WO2020/066940, PCT Pub. Date Apr. 2, 2020.
Claims priority of application No. 2018-183782 (JP), filed on Sep. 28, 2018.
Prior Publication US 2022/0057331 A1, Feb. 24, 2022
Int. Cl. G01N 21/65 (2006.01); B29C 71/00 (2006.01); B29C 71/02 (2006.01); B29K 101/12 (2006.01); G01N 33/44 (2006.01)
CPC G01N 21/65 (2013.01) [B29C 71/0063 (2013.01); B29C 71/02 (2013.01); G01N 33/442 (2013.01); B29K 2101/12 (2013.01); B29K 2995/0041 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A crystallinity measurement method, comprising:
acquiring a Raman spectrum of resin-containing material including crystalline thermoplastic resin by irradiating the resin-containing material with excitation light and spectrally dispersing Raman scattered light emitted from the crystalline thermoplastic resin contained in the resin-containing material; and
calculating crystallinity of the crystalline thermoplastic resin based on an intensity of a low-wavenumber spectrum that is a spectrum in a region of less than 600 cm−1, in the acquired Raman spectrum, by calculating a ratio of the intensity of two low wavenumber spectrums,
obtaining a correlation information indicating the correlation between the ratio of the intensity and the crystallinity of the crystalline thermoplastic resin, and
calculating the crystallinity of the crystalline thermoplastic resin based on the calculated ratio of the intensity and the obtained correlation information.