亚马逊杉木纤维：从原生树木到可能的可持续纳米增强物。

IF 6.2 1区农林科学 Q1 AGRICULTURAL ENGINEERING

Industrial Crops and Products Pub Date : 2025-01-10 DOI:10.1016/j.indcrop.2024.120454

Samir Leite Mathias , Vitor Hugo de Lima , Isabella Karoline Ribeiro Dias , Valdeir Arantes , Marcelo De Assumpção Pereira-Da-Silva , Alessandra De Almeida Lucas , Aparecido Junior De Menezes

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引用次数: 0

摘要

纤维素纳米晶体（CNCs）和纳米原纤维（CNFs）是从一种叫做suucucumir (Spathelia excelsa (Krause) Cowan &；Brizicky[罪。sohnroyya excelsa K.)。通过TAPPI标准检测生物质化学成分，木质素和α纤维素含量分别为38.9 %和31.3 %左右。傅里叶变换红外光谱（FTIR）分析证实，在不破坏纤维素糖苷键的情况下，成功地从原料纤维中去除了木质素和半纤维素。扫描电子显微镜（SEM）显微照片进一步支持了这一点，这些照片显示了漂白过程后的纤维性颤动。热重（TG）结果表明，分子间和分子内相互作用对热稳定性的影响依赖于CNFs，与cnc相比，CNFs表现出更高的稳定性。x射线衍射（XRD）分析表明，纳米纤维素的结晶度显著提高，结晶度指数（CI）从原始样品的54.1% %上升到纳米纤维素样品的89.6% %。原子力显微镜（AFM）纳米照片证实了CNCs和CNFs的成功提取。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Amazonian Surucucumirá fibers: From native tree to a possible sustainable nano-reinforcement.

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Amazonian Surucucumirá fibers: From native tree to a possible sustainable nano-reinforcement.

Cellulose nanocrystals (CNCs) and nanofibrils (CNFs) were obtained from fibers of a native Amazon tree known as Surucucumirá (Spathelia excelsa (Krause) Cowan & Brizicky [sin. Sohnroyia excelsa K.]). The chemical composition of the biomass was inspected through TAPPI standards and the lignin and alphacellulose contents were, respectively, around 38.9 % and 31.3 %. Fourier Transform Infrared Spectroscopy (FTIR) analysis confirmed the successful removal of lignin and hemicellulose from the raw fibers without disrupting the cellulose's glycosidic bonds. This is further supported by the scanning electron microscopy (SEM) micrographs, which reveal the fibrillation following the bleaching process. Thermogravimetry (TG) results showed the dependence of intermolecular and intramolecular interactions influencing on thermal stability, with CNFs exhibiting higher stability compared to CNCs. X-ray diffraction (XRD) analysis revealed a significant increase in crystallinity, with the Crystallinity Index (CI) rising from 54.1 % for the raw samples to 89.6 % for the nanocellulose samples. Atomic force microscopy (AFM) nanographs confirmed the successful extraction of both CNCs and CNFs.

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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.