Synergistic effect of graphene oxide on the properties of poly (vinyl alcohol)/carboxymethyl cellulose electrospun nanofiber mats

IF 3.8 4区工程技术 Q2 CHEMISTRY, APPLIED

Journal of Vinyl & Additive Technology Pub Date : 2025-01-02 DOI:10.1002/vnl.22192

Karanjit Kapila, Dr Sushen Kirtania, Mr Kaushik K. Nath, Mr Akuleti Saikumar, Dr Laxmikant S. Badwaik, Dr Gazi Ameen Ahmed

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引用次数: 0

Abstract

The aim of this study was to develop polyvinyl alcohol (PVA)/carboxymethyl cellulose (CMC)/graphene oxide (GO) nanofiber mats using electrospinning fabrication technique. Polymer solutions were prepared with PVA at a concentration of 6% w/v, CMC ranging from 0.5% to 1.5% w/v, in a 1:1 polymer blend ratio, and GO nanofiller from 0.1% to 0.5% w/v. Addition of CMC and GO amend the solution properties such as conductivity and viscosity, leading to notable alteration in nanofiber diameters from 90.514 to 169.225 nm. As evidenced by rheological analysis, addition of GO significantly enhanced the storage moduli and shear stress of PVA/CMC/GO solutions compared to PVA and PVA/CMC. According to tensile properties, the tensile strength of PVA/CMC/GO nanofiber mats was increased by 25.59% to 46.41% at 0.1%–0.3% w/v of GO compared to PVA/CMC mats, contributing to overall mechanical improvements. FTIR spectroscopy revealed interactions between the hydroxyl (OH) groups of PVA and carboxylate groups (COOH) of CMCs, with increased intensity in OH and CH absorption bands. The presence of hydrophilic functional groups increases the wettability of the nanofiber mats, as indicated by reduced water contact angles from 51.321° to 45.924°. The oxygen-rich structure of GO enhances the barrier properties of nanofiber mats, resulting in reduced water vapor permeability (WVP) from 1.049 to 0.980 g/m.h. Pa and moisture retention capacity (MRC) from 95.68% to 90.854%. Moreover, TGA analysis showed a significant improvement in the decomposition temperature of the hybrid PVA/CMC/GO nanofibers, resulting in reduced mass loss compared to other developed nanofibers. Overall, the obtained results validate the use of CMC biopolymer and GO nanofiller as an additive for the production nanofiber mats with improved structural, mechanical, thermal and barrier properties particularly for industrial, medical and packaging applications.

Highlights

Blending of polymers to overcome the properties of single polymer system.
Development of PVA, PVA/CMC and PVA/CMC/GO electrospun nanofiber mats.
Effect of GO nanofiller on the properties of nanofiber mats.
Potential future applications in advanced engineering and material sciences.

Abstract Image

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氧化石墨烯对聚乙烯醇/羧甲基纤维素静电纺纳米纤维毡性能的协同效应

本研究的目的是利用静电纺丝技术制备聚乙烯醇(PVA)/羧甲基纤维素(CMC)/氧化石墨烯（GO）纳米纤维垫。以PVA浓度为6% w/v， CMC浓度为0.5% ~ 1.5% w/v，聚合物共混比为1:1，氧化石墨烯纳米填料浓度为0.1% ~ 0.5% w/v制备聚合物溶液。CMC和GO的加入改变了溶液的电导率和粘度等性能，导致纳米纤维直径从90.514 nm显著变化到169.225 nm。流变学分析表明，与PVA和PVA/CMC相比，GO的加入显著提高了PVA/CMC/GO溶液的存储模量和剪切应力。拉伸性能方面，当氧化石墨烯含量为0.1% ~ 0.3% w/v时，PVA/CMC/GO纳米纤维毡的拉伸强度比PVA/CMC毡提高了25.59% ~ 46.41%，整体力学性能得到改善。FTIR光谱显示PVA的羟基（OH）与cmc的羧酸基（COOH）之间存在相互作用，且在羟基和羧酸基（OH）吸收波段强度增加。亲水性官能团的存在增加了纳米纤维垫的润湿性，水接触角从51.321°降低到45.924°。氧化石墨烯的富氧结构增强了纳米纤维垫的阻隔性能，使其水蒸气渗透率（WVP）从1.049降低到0.980 g/m.h。Pa和持湿能力（MRC）为95.68% ~ 90.854%。此外，TGA分析表明，与其他开发的纳米纤维相比，PVA/CMC/GO混杂纳米纤维的分解温度显著提高，导致质量损失降低。总的来说，获得的结果验证了CMC生物聚合物和氧化石墨烯纳米填料作为生产纳米纤维垫的添加剂的使用，具有改进的结构、机械、热和阻隔性能，特别是在工业、医疗和包装应用中。聚合物的共混克服了单一聚合物体系的特性。PVA、PVA/CMC和PVA/CMC/GO静电纺纳米纤维垫的研制。氧化石墨烯纳米填料对纳米纤维毡性能的影响。在先进工程和材料科学领域的潜在应用前景。

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

Journal of Vinyl & Additive Technology 工程技术-材料科学：纺织

CiteScore

5.40

自引率

14.80%

发文量

审稿时长

>12 weeks

期刊介绍： Journal of Vinyl and Additive Technology is a peer-reviewed technical publication for new work in the fields of polymer modifiers and additives, vinyl polymers and selected review papers. Over half of all papers in JVAT are based on technology of additives and modifiers for all classes of polymers: thermoset polymers and both condensation and addition thermoplastics. Papers on vinyl technology include PVC additives.