Modulation of improved lignin structure for conversion of iron oxides on the metal artifact

IF 5.6 1区农林科学 Q1 AGRICULTURAL ENGINEERING

Industrial Crops and Products Pub Date : 2024-11-09 DOI:10.1016/j.indcrop.2024.120015

Liyana Syafawati Osman , Nur Hanani Hazirah Elias , Mokhtar Saidin , Shaiful Shahidan , Ahmad Fadly Jusoh , Nicolas Brosse , Isabelle Ziegler-Devin , Mohamad Nasir Mohamad Ibrahim , Pandian Bothi Raja , Djalal Trache , M. Hazwan Hussin

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Abstract

This research reveals the structural analysis and antioxidant properties of unmodified ethanol organosolv lignin (AH EOL) and modified ethanol organosolv lignin (AHD EOL and AHPB EOL) upon incorporation with 1,5-dihydroxy naphthalene and p-benzoquinone, respectively. The extracted lignin derived from OPF was then evaluated with FTIR NMR, GPC, thermal analyses (TGA and DSC), solubility test, and antioxidant activity. Modified ethanol organosolv lignin incorporated with p-benzoquinone (AHPB EOL) exhibited the smallest lignin matrix, which leads to the highest water solubility and antioxidant activity compared to other ethanol organosolv lignin (EOL) samples (D% _{AHPB EOL}: 24.25 ± 0.13 % > D% _{AHD EOL}: 22.50 ± 0.16 % > D% _{AH EOL}: 20.50 ± 0.22 %). The extracted EOL samples derived from OPF were then utilized in a preliminary rust conversion study of a metal artifact, which indicated that 7 wt% AHPB EOL possessed the highest RT% with 88.81 ± 0.14 %. The XRD and surface analysis of the treated rust also showed that it had transformed the archeological rust into an amorphous phase.

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改良木质素结构，促进铁氧化物在金属表面的转化

本研究揭示了未改性乙醇有机溶胶木质素（AH EOL）和改性乙醇有机溶胶木质素（AHD EOL 和 AHPB EOL）分别加入 1,5- 二羟基萘和对苯醌后的结构分析和抗氧化特性。然后对从 OPF 中提取的木质素进行了傅立叶变换红外核磁共振（FTIR NMR）、气相色谱（GPC）、热分析（TGA 和 DSC）、溶解性测试和抗氧化活性评估。与其他乙醇有机溶胶木质素（EOL）样品（D% AHPB EOL：24.25 ± 0.13 %；D% AHD EOL：22.50 ± 0.16 %；D% AH EOL：20.50 ± 0.22 %）相比，加入对苯醌的改性乙醇有机溶胶木质素（AHPB EOL）的木质素基质最小，因此水溶性和抗氧化活性最高。然后利用从 OPF 中提取的 EOL 样品对一件金属工艺品进行了初步的锈蚀转化研究，结果表明 7 wt% AHPB EOL 的 RT% 最高，为 88.81 ± 0.14 %。对处理过的锈进行的 XRD 和表面分析也表明，它已将考古锈转化为无定形相。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Industrial Crops and Products 农林科学-农业工程

CiteScore

9.50

自引率

8.50%

发文量

1518

审稿时长

43 days

期刊介绍： Industrial Crops and Products is an International Journal publishing academic and industrial research on industrial (defined as non-food/non-feed) crops and products. Papers concern both crop-oriented and bio-based materials from crops-oriented research, and should be of interest to an international audience, hypothesis driven, and where comparisons are made statistics performed.