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Preparation and application of dialdehyde nanocellulose reinforced jatropha oil based polymer emulsions as leather fatliquors

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Abstract

Bio-based acrylated epoxidized jatropha oil (AEJO) was developed using a solvent-free synthetic method, and the structure of the resulting product was confirmed by Fourier transform infrared spectroscopy and proton nuclear magnetic resonance (1H NMR) spectra. Subsequently, an amphiphilic polymer emulsion AEJO-AA was prepared by emulsion polymerization using acrylic acid (AA) and AEJO. Moreover, 2, 3-dialdehyde nanocellulose (DNC) was prepared and combined with AEJO-AA emulsion as a fatliquoring agent for goatskin upper leather. The fatliquored leather shows improved mechanical strength and thermal stability. When the DNC loading is 1.5 wt%, the fatliquored leather exhibits the highest tensile strength of 24.3 MPa, tear strength of 62.2 N/mm and thermal denaturation temperature (Td) of 95.4 °C. The fogging values of the fatliquored leather satisfy the requirements of automobile seat leather. The biochemical oxygen demand (BOD5) and chemical oxygen demand results indicate that the DNC/AEJO-AA emulsion is easily biodegradable. Overall, the developed DNC/AEJO-AA emulsion provides a new strategy in the production of bio-based and ecological polymer fatliquor of leather.

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Acknowledgments

This work was supported by The Key Research Project of Shaanxi Province (2020GY-258), National Demonstration Center for Experimental Light Chemistry Engineering Education (Shaanxi University of Science &Technology, 2018QGSJ02-14). Jianzhong Ma was responsible for leading the preparation of this manuscript. Tiantian Wang, Shuai Yu, Yuehong Zhang and Bin Lyu all made substantial contributions to the study design, analysis, interpretation, writing and revision of the manuscript. All authors provided approval for publication and we appreciate the assistance of Zhenhua Tian for NMR analysis.

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Correspondence to Jianzhong Ma or Yuehong Zhang.

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Ma, J., Wang, T., Yu, S. et al. Preparation and application of dialdehyde nanocellulose reinforced jatropha oil based polymer emulsions as leather fatliquors. Cellulose 28, 331–346 (2021). https://doi.org/10.1007/s10570-020-03494-y

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  • DOI: https://doi.org/10.1007/s10570-020-03494-y

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