Preparation of high solid content oxidized starch by acid pretreatment–H2O2 oxidation and its performance as the ligand in zirconium tanning

Wang, Jiaying; Yu, Yue; Feng, Y.; Wang, Yanan; Shi, Bi

doi:10.1016/j.carres.2022.108501

Cited by 12 publications

(2 citation statements)

References 40 publications

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“…Adhesive properties improved with increasing solid content and a lower solid content indicates that more volatiles need to be removed during the pressing process [ 47 ]. The improvement of the solid content is caused by the oxidation of the starch, which introduces carboxyl and carbonyl groups that cause the adhesive formulated to retard recrystallization [ 48 ]. Oxidized starch increases stability against excessive heat, acid, shear, time, cooling, and freezing [ 49 ].…”

Section: Discussionmentioning

confidence: 99%

Production of Chemically Modified Bio-Based Wood Adhesive from Camote and Cassava Peels

Reotutar,

Mamuad,

Choi

2024

Polymers

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Adhesives are significant for manufacturing competent, light, and sturdy goods in various industries. Adhesives are an important part of the modern manufacturing landscape because of their versatility, cost-effectiveness, and ability to enhance product performance. Formaldehyde and polymeric diphenylmethane diisocyanate (PMDI) are conventional adhesives utilized in wood applications and have been classified as carcinogenic, toxic, and unsustainable. Given the adverse environmental and health effects associated with synthetic adhesives, there is a growing research interest aimed at developing environmentally friendly bio-based wood adhesives derived from renewable resources. This study aimed to extract starch from camote and cassava peels and focuses on the oxidization of starch derived from camote and cassava peels using sodium hypochlorite to create bio-based adhesives. The mean yield of starch extracted from camote and cassava peels was 13.19 ± 0.48% and 18.92 ± 0.15%, respectively, while the mean weight of the oxidized starches was 34.80 g and 45.34 g for camote and cassava, respectively. Various starch ratios sourced from camote and cassava peels were examined in the production of bio-based adhesives. The results indicate that the 40:60 camote to cassava ratio yielded the highest solid content, while the 80:20 ratio resulted in the best viscosity. Furthermore, the 40:60 ratio produced the most favorable particle board in terms of mechanical properties, density, thickness, swelling, and water absorption. Consequently, the starch extracted from camote and cassava peels holds promise as a potential source for bio-based adhesives following appropriate chemical modification.

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Section: Discussionmentioning

confidence: 99%

Production of Chemically Modified Bio-Based Wood Adhesive from Camote and Cassava Peels

Reotutar,

Mamuad,

Choi

2024

Polymers

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“…The oxidized starch exhibited new peaks at 165 and 174 ppm, which were attributed to aldehyde groups and carboxyl groups. 52 These results confirmed that pristine starch was successfully oxidized into OS-MgAlFe-LDHs and possessed active groups (such as aldehyde groups and carboxyl groups) due to the catalytic performance of the MgAlFe-LDHs.…”

Section: Methodsmentioning

confidence: 98%

One-Step Synthesis of Starch-Based Composite Chrome-Free Tanning Agents via In Situ Catalysis Using Hydrotalcites

Shen

Fan

et al. 2023

ACS Sustainable Chem. Eng.

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The oxidation of starch into valuable chemicals holds great promise for the leather industry, but the catalytic efficiency of existing reactions is low. Moreover, residual catalyst in the reaction liquid is a potential environmental hazard. Herein, starch was oxidized by hydrogen peroxide and a magnesium aluminum iron hydrotalcite (MgAlFe-LDH) catalyst to introduce functional groups and nanomaterials, forming a starch-based hydrotalcite composite (OS-MgAlFe-LDH) in one step. This catalyst showed improved catalytic efficiency, and the generation of pollution was avoided. Moreover, the prepared OS-MgAlFe-LDH was suitable as a complex tanning agent for chrome-free tanning with improved efficiency, and MgAlFe-LDH acted as a crosslinking reinforcing agent. Using this tanning agent, the hydrothermal stability of crust leather was enhanced (shrinkage temperature: 75 °C). The tanned leather had high porosity (79.06%) and a uniform tanning agent distribution ascribed to the varying molecular weights of the components of the OS-MgAlFe-LDHs (weight-average molecular weight: 5438 g/mol). The binding energy between OS-MgAlFe-LDHs and the leather collagen (94.62 kcal/mol) was high, inhibiting the migration of OS-MgAlFe-LDHs from the collagen matrix. Thus, OS-MgAlFe-LDHs exhibited strong crosslinking performance with leather collagen. In summary, a sustainable and environmental-friendly tanning agent was prepared by a one-step synthesis in this work, offering a fundamental step for the preparation of biomass materials in the leather industry.

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Polysaccharides for sustainable leather production: a review

Liang,

Wang,

Sun

et al. 2024

Environ Chem Lett

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Preparation of high solid content oxidized starch by acid pretreatment–H2O2 oxidation and its performance as the ligand in zirconium tanning

Cited by 12 publications

References 40 publications

Production of Chemically Modified Bio-Based Wood Adhesive from Camote and Cassava Peels

Production of Chemically Modified Bio-Based Wood Adhesive from Camote and Cassava Peels

One-Step Synthesis of Starch-Based Composite Chrome-Free Tanning Agents via In Situ Catalysis Using Hydrotalcites

Polysaccharides for sustainable leather production: a review

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