Synthesis and characterization of nanocellulose from watermelon rinds and water hyacinth

Q2 Materials Science

Polymers from Renewable Resources Pub Date : 2023-05-09 DOI:10.1177/20412479231174443

Remya Pk, Manju Ms, Abith Sunil, Athulya Ks, Jerome Joseph, Jyothsna Tu

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引用次数: 0

Abstract

Nanocellulose derived from cellulose, the abundant natural polymer, is used in various applications due to its superior chemical, mechanical and thermal properties along with good biocompatibility and biodegradability. This paper reports an investigation of the extraction of nanocellulose from two freely available natural precursors-watermelon rinds and water hyacinth leaves. Cellulose isolation was carried out through chemical methods, including acid and alkali treatments followed by bleaching. The chemical composition, percentage crystallinity and particle size were studied using various characterization techniques. FTIR spectra indicate the removal of hemicelluloses, pectin, and lignin resulting in the effective isolation of cellulose from both precursors. Results of XRD indicate a high concentration of Cellulose Nanocrystals (CNCs) in the treated sample. The FESEM and SEM-EDAX images also confirm the formation of CNCs. TGA and DSC results show excellent thermal stability for both CNCs. Investigations on the properties of a CNC-reinforced epoxy composite are also reported. Results indicate considerable improvement in the mechanical properties, thermal stability and thermal conductivity of the composites compared to the pristine polymer.

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西瓜皮和水葫芦纳米纤维素的合成与表征

纳米纤维素是一种丰富的天然聚合物，由于其优越的化学、机械和热性能以及良好的生物相容性和生物降解性，被广泛应用于各种领域。研究了从西瓜皮和水葫芦叶两种天然前体中提取纳米纤维素的方法。纤维素的分离是通过化学方法进行的，包括酸和碱处理，然后漂白。采用不同的表征技术对其化学成分、结晶度和粒径进行了研究。FTIR光谱表明半纤维素、果胶和木质素的去除导致纤维素从两种前体中有效分离。XRD结果表明，处理后的样品中含有高浓度的纤维素纳米晶体(CNCs)。FESEM和SEM-EDAX图像也证实了cnc的形成。TGA和DSC结果表明两种cnc具有良好的热稳定性。研究了一种cnc增强环氧复合材料的性能。结果表明，与原始聚合物相比，复合材料的机械性能、热稳定性和导热性有了显著改善。

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来源期刊

Polymers from Renewable Resources Materials Science-Polymers and Plastics

CiteScore

3.50

自引率

0.00%

发文量

期刊介绍： Polymers from Renewable Resources, launched in 2010, publishes leading peer reviewed research that is focused on the development of renewable polymers and their application in the production of industrial, consumer, and medical products. The progressive decline of fossil resources, together with the ongoing increases in oil prices, has initiated an increase in the search for alternatives based on renewable resources for the production of energy. The prevalence of petroleum and carbon based chemistry for the production of organic chemical goods has generated a variety of initiatives aimed at replacing fossil sources with renewable counterparts. In particular, major efforts are being conducted in polymer science and technology to prepare macromolecular materials based on renewable resources. Also gaining momentum is the utilisation of vegetable biomass either by the separation of its components and their development or after suitable chemical modification. This journal is a valuable addition to academic, research and industrial libraries, research institutions dealing with the use of natural resources and materials science and industrial laboratories concerned with polymer science.