Preparation of highly-oxidized starch using hydrogen peroxide and its application as a novel ligand for zirconium tanning of leather

Yu, Yue; Wang, Yanan; Ding, Wei; Zhou, Jianfei; Shi, Bi

doi:10.1016/j.carbpol.2017.06.114

Cited by 80 publications

(32 citation statements)

References 21 publications

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“…The bimetal complex tanning agent was prepared by blending a highly oxidized starch ligand (15 wt%, the preparation method was reported in our previous work [17]), Al 2 (SO 4 ) 3 ·18H 2 O (60 wt%), and Zr(SO 4 ) 2 ·4H 2 O (25 wt%). Pickled cattle hide was tanned by 10% bimetal complex tanning agent (based on limed weight, the same below) at 25°C for 3 h and basified with 1.1% magnesium oxide to pH 4.0.…”

Section: Methodsmentioning

confidence: 99%

“…We recently developed a promising and practical chromefree tanning system based on a novel Al-Zr bimetal complex tanning agent [17]. A well-prepared oxidized starch ligand was introduced into the complex tanning agent, which resulted in excellent tanning performance [18,19].…”

Section: Introductionmentioning

confidence: 99%

“…A well-prepared oxidized starch ligand was introduced into the complex tanning agent, which resulted in excellent tanning performance [18,19]. The wet white tanned by this chrome-free tanning agent showed similar extent of collagen fiber separation, storage stability and charge characteristic compared with wet blue [17,20]. In this study, to make satisfactory resultant leather, the retanning of the wet white was explored.…”

Section: Introductionmentioning

confidence: 99%

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Interaction between retanning agents and wet white tanned by a novel bimetal complex tanning agent

Huang

Song

et al. 2020

J Leather Sci Eng

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A promising and practical chrome-free tanning system has been developed based on a novel Al-Zr bimetal complex tanning agent. However, to achieve satisfactory resultant leather, the retanning process that is compatible with this emerging tannage needs to be investigated systematically. This paper aims to explore the interaction between the bimetal complex tanned wet white and retanning agents. The isoelectric point (pI) of wet white was 7.2, which was nearly the same as wet blue. The electropositivity of wet white was even higher than that of wet blue during post-tanning processes, resulting in higher uptake rate of retanning agents. The distribution of various retanning agents in wet white was analyzed by pI measurement of layered leather and fluorescent tracing technique. The retanning agents were unevenly distributed throughout the cross-section, which might be an important restriction factor in obtaining satisfactory organoleptic properties of the crust leather. This fact is mainly due to the strong electrostatic interaction between anionic retanning agents and wet white. Applying a high dosage of multiple retanning agents in a proper sequence of addition benefited the full penetration of retanning agents in leather matrix and thus improved the organoleptic properties of crust leather. This work provides guidance for optimizing retanning process of the wet white leather.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Interaction between retanning agents and wet white tanned by a novel bimetal complex tanning agent

Huang

Song

et al. 2020

J Leather Sci Eng

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“…Starch is an abundant, affordable, and renewable resource and considered the cheapest and major source of energy for human beings in food products . However, in order to achieve a particular objective in food and non‐food products, such as thermoplastic starch, oxidized starch, etherified starch, crosslinked starch, grafted starch, et al starches need to be modified to improve its application scope due to its poor performance. For this purpose, starch can be modified via physical, chemical or enzymatic method to obtain modified starch with desired properties…”

Section: Introductionmentioning

confidence: 99%

Rapid Preparation of Oxidized Starch with High Carbonyl Contents Using NaBrO as Oxidizer

Yang¹,

Wang²,

Zhang³

et al. 2019

Starch Stärke

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In this work, oxidized starch with high carbonyl contents is obtained in a rather simple way using corn starch as raw material and NaBrO as an oxidizer. The produced oxidized starch is evaluated by measuring the carboxyl content, carbonyl content, yield, and the intrinsic viscosity. The influences of pH, reaction time, temperature and oxidizer content on carbonyl content, carboxyl content, intrinsic viscosity, and yield of the oxidized starch are investigated in detail. It is found that the reaction conditions are readily controlled, and the higher carbonyl contents as well as yield of oxidized starch can be obtained compared with those reported previously, leading to promising products. The formation of carboxyl and carbonyl groups on the oxidized starch is confirmed by FT‐IR. The changes of crystallinity and the apparent morphology of oxidized starch are characterized with XRD and SEM, respectively.

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“…Mineral salts, such as chromium, aluminum, titanium, iron and zirconium salts, are widely used as tanning agents due to their favorable tanning effect and availability. [6][7][8][9] At present, chrome salts (Cr(III)) are the most used tanning agent worldwide. However, their use is becoming more and more restrictive, due to their potential risk to human health and environmental issues, especially when Cr(III) is oxidized to Cr(VI), which is a human carcinogen.…”

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confidence: 99%

A ‘Trojan horse strategy’ for the development of a renewable leather tanning agent produced via an AlCl₃-catalyzed cellulose depolymerization

Jiang

Ding

et al. 2020

Green Chem.

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Preparation of highly-oxidized starch using hydrogen peroxide and its application as a novel ligand for zirconium tanning of leather

Cited by 80 publications

References 21 publications

Interaction between retanning agents and wet white tanned by a novel bimetal complex tanning agent

Interaction between retanning agents and wet white tanned by a novel bimetal complex tanning agent

Rapid Preparation of Oxidized Starch with High Carbonyl Contents Using NaBrO as Oxidizer

A ‘Trojan horse strategy’ for the development of a renewable leather tanning agent produced via an AlCl₃-catalyzed cellulose depolymerization

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Preparation of highly-oxidized starch using hydrogen peroxide and its application as a novel ligand for zirconium tanning of leather

Cited by 80 publications

References 21 publications

Interaction between retanning agents and wet white tanned by a novel bimetal complex tanning agent

Interaction between retanning agents and wet white tanned by a novel bimetal complex tanning agent

Rapid Preparation of Oxidized Starch with High Carbonyl Contents Using NaBrO as Oxidizer

A ‘Trojan horse strategy’ for the development of a renewable leather tanning agent produced via an AlCl3-catalyzed cellulose depolymerization

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A ‘Trojan horse strategy’ for the development of a renewable leather tanning agent produced via an AlCl₃-catalyzed cellulose depolymerization