球磨辅助超声提取小茴香壳中纳米纤维素并对其进行表征

IF 6.5 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymer Technologies and Applications Pub Date : 2025-07-03 DOI:10.1016/j.carpta.2025.100934

Zahra Hoseinpour , Razieh Niazmand , Mojtaba Heydari-Majd

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引用次数: 0

摘要

对环保材料的需求不断增长，推动了对农业废弃物纳米纤维素（NC）的兴趣。本研究采用碱脱木质素（NaOH/H₂O₂）、球磨（200 rpm, 2 H）和超声波（10 min）两步工艺从Cuminum cyum L.壳中提取NC。综合表征- ftir， XRD， DLS， zeta电位，接触角，FESEM， AFM， TGA和dsc -显示有效去除非纤维素，将纤维素含量从32%（生壳）提高到68%。FTIR证实木质素/半纤维素消除，而XRD显示结晶度指数为69.38%，表明结构有序。DLS测得的平均粒径为316.13±12.64 nm，胶体稳定性中等（ζ = -25.15 mV）。疏水性（接触角：117.87°）和热稳定性（275°C开始降解）显著。形态学分析（FESEM/AFM）证实纳米级除颤，尽管轻微聚集仍然存在。与酸水解相比，这种方法最大限度地减少了化学使用，同时产生适合复合材料性能的NC。结果强调孜然壳是可持续的NC来源，并验证了组合机械方法作为可扩展的，环保的替代品。

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Extraction and characterization of nanocellulose from Cuminum cyminum L. husk by ball-milling-assisted ultrasound

The rising demand for eco-friendly materials drives interest in nanocellulose (NC) from agricultural waste. This study extracts NC from Cuminum cyminum L. husk via a green two-step process: alkaline delignification (NaOH/H₂O₂) followed by ball milling (200 rpm, 2 h) and ultrasonication (10 min). Comprehensive characterization—FTIR, XRD, DLS, zeta potential, contact angle, FESEM, AFM, TGA, and DSC—revealed efficient removal of non-cellulosics, increasing cellulose content from 32 % (raw husk) to 68 %. FTIR confirmed lignin/hemicellulose elimination, while XRD showed a crystallinity index of 69.38 %, indicating structural order. DLS measured an average particle diameter of 316.13 ± 12.64 nm with moderate colloidal stability (ζ = -25.15 mV). Hydrophobicity (contact angle: 117.87°) and thermal stability (degradation onset at 275 °C) were notable. Morphological analyses (FESEM/AFM) confirmed nanoscale defibrillation, though slight aggregation persisted. Compared to acid hydrolysis, this method minimizes chemical use while yielding NC with properties suitable for composites. The results highlight cumin husk as a sustainable NC source and validate the combined mechanical approach as a scalable, eco-friendly alternative.

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来源期刊

Carbohydrate Polymer Technologies and Applications

CiteScore

8.70

自引率

0.00%

发文量