Coloration Modeling and Processing of Commodity Plastic Buttons in Supercritical Carbon Dioxide

Kota Kobayashi; Tierong Bai; Kazuhiro Tamura; Kaoru Tada; Jun Yan; Laijiu Zheng

doi:10.3390/ma16030907

Coloration Modeling and Processing of Commodity Plastic Buttons in Supercritical Carbon Dioxide

Materials (Basel). 2023 Jan 17;16(3):907. doi: 10.3390/ma16030907.

Authors

Kota Kobayashi¹, Tierong Bai^{1

2}, Kazuhiro Tamura¹, Kaoru Tada¹, Jun Yan², Laijiu Zheng²

Affiliations

¹ School of Natural System, College of Science and Engineering, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan.
² School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China.

Abstract

We examined the color processing of the commodity plastic buttons made of acrylic, polyester, nylon, and casein with scCO₂. The buttons' dyeing color depth (K/S) was measured over a wide range of scCO₂ and correlated accurately with the response surface method. Moreover, we measured the solubility of C.I. Disperse Red 22 in scCO₂ to formulate a dye-sorption model for the K/S value in the color processing of the plastic buttons. Finally, the dye-sorption model for the K/S value combining the dye solubility in scCO₂ with the dye diffusion inside the buttons successfully represented the color processing of the buttons.

Keywords: K/S value; diffusion–adsorption model; dyeing; plastic button; scCO2; solubility.

Grants and funding

This research received no external funding.