Peroxide-periodate co-modification of carboxymethylcellulose to prepare polysaccharide-based tanning agent with high solid content

Conversion of Biomasses and Copper into Catalysts for Photocatalytic CO2 Reduction

“…Carbohydrates could be converted into HTCC microspheres (Figure S3) under hydrothermal conditions. They undergo a polymerization process and produce insolvable HTCC structures. − The HTCC contains some reducing functional groups. − Heavy metal ions can be fixed and encapsulated in the metal/HTCC composite. In the SEM images of Cu-HTCC, the HTCC particles are mainly spherical (Figures a and S3).…”

Advanced masking agent for leather tanning from stepwise degradation and oxidation of cellulose

“…T s and color difference (ΔE, lower ΔE value generally means higher whiteness of the tanned leather) were examined, where the former is an important parameter to characterize the tanning performance and the latter is closely related to the flexibility of leather for commercial use. 2,10,21 Approximately 64°C for T s was obtained for the leathers tanned by H 2 O fractions from n-BuOH-adopted and GVL-adopted reaction systems, slightly higher than that of untanned cattle skin (56.8°C), indicating better tanning effects of these two H 2 O fractions. Furthermore, the ΔE of the tanned leather from GVL-adopted experiment was 23.4%, which was obviously lower than that from n-BuOHadopted experiment, presenting higher whiteness for further application.…”

“…8,9 However, low isoelectric point of the leather tanned by organic tanning agent led to insufficient interactions with anionic dye during further treatment, resulting in poor physical property of the finished leather. 10 Apart from chrome salts, aluminum and zirconium salts also have favorable tanning performances. 11,12 It must be bared in mind that these metal tanning agents will strongly coordinate with the collagen fibers during the initial penetration process, leading to their deposition onto leather surface, non-uniform penetration and a consequently poor tanning effect.…”

Graphene oxide modified waterborne polyurethane‐based dye with high color‐fastness performance

“…The color change of sample was evaluated by using an automatic color difference meter SC‐80C (Beijing Kangguang Optical Instrument Co., Ltd.) to determine the color parameters (L, a, b) value of sample both before and after 6, 14, 24, 30 h of irradiation. The total color difference (ΔE) was calculated by the Equation ). where ΔE represents the overall color difference; ΔL is the lightness difference; Δa and Δb stand for the difference of a and b values, where 'a' represents red and green axis and 'b' represents yellow and blue axis 11,12 . ΔL, Δa, and Δb were calculated by subtracting the corresponding values before and after irradiation.…”