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 (T_d) 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.

Graphic abstract

中文翻译：

---

二醛纳米纤维素增强麻风树油基聚合物乳液作为皮革加脂剂的制备及应用

摘要

使用无溶剂合成方法开发了生物基丙烯酸环氧化麻风树油（AEJO），并通过傅立叶变换红外光谱和质子核磁共振（¹ H NMR）光谱确认了所得产物的结构。随后，通过使用丙烯酸（AA）和AEJO的乳液聚合来制备两亲聚合物乳液AEJO-AA。另外，制备了2，3-二醛纳米纤维素（DNC），并与AEJO-AA乳液组合作为山羊皮上层皮革的加脂剂。加脂皮革显示出改进的机械强度和热稳定性。当DNC负载为1.5 wt％时，加脂皮革的最高拉伸强度为24.3 MPa，撕裂强度为62.2 N / mm，热变性温度（T _d）95.4°C。加脂皮革的起雾值满足汽车座椅皮革的要求。生化需氧量（BOD ₅）和化学需氧量结果表明DNC / AEJO-AA乳液易于生物降解。总体而言，开发的DNC / AEJO-AA乳液在生产生物基和生态聚合物皮革加脂剂方面提供了新的策略。

图形摘要