了解tempo氧化纤维素纳米纤维在天然胶乳纳米复合材料中的作用

Q2 Materials Science

Polymers from Renewable Resources Pub Date : 2022-08-01 DOI:10.1177/20412479221122271

Vijayalekshmi V, Poornima Vijayan P, M. Cd, Sabu Thomas

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引用次数: 0

摘要

采用2,2,6,6 -四甲基哌替啶-1-氧(TEMPO)氧化法从原棉纤维中分离得到纤维素纳米纤维(CNF)。利用场发射扫描电镜(FESEM)和透射电镜(TEM)对分离的CNF进行了形态表征。在纳米范围内(15 ~ 20 nm)观察到缠绕的纤维形态。x射线衍射(XRD)分析证实了分离的CNF的高结晶度。此外，分离的CNF被用于增强天然橡胶(NR)乳胶膜。对NR/CNF纳米复合材料进行了晶体学、形态学和光谱分析。CNF与NR基质之间存在强相互作用，这反映了NR/CNF纳米复合膜在甲苯中的热稳定性和膨胀行为。CNF的均匀分散和缠结效应以及强烈的NR-CNF相互作用限制了溶剂通过NR基质的吸收。

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Understanding the role of TEMPO-oxidized cellulose nanofiber on natural rubber latex nanocomposites

Cellulose nanofibers (CNF) were isolated from raw cotton fibers via 2, 2, 6, 6-tetramethylpiperidine-1-oxyl (TEMPO) oxidation process. The isolated CNF were morphologically characterized using Field Emission Scanning Electron Microscopy (FESEM) and Transmission Electron Microscopy (TEM). Entangled fibrous morphology with diameter in nano regime (15–20 nm) has been observed for the isolated nanofibers. X-ray diffraction (XRD) analysis confirms the high crystallinity of the isolated CNF. Further, the isolated CNF was used to reinforce natural rubber (NR) latex films. The crystallographic, morphological, and spectroscopic analysis of the NR/CNF nanocomposites was carried out. A strong interaction between the CNF and NR matrix has been identified and which reflects in the thermal stability and swelling behavior of NR/CNF nanocomposite films in toluene. The uniform dispersion and tangling effect of CNF along with strong NR-CNF interaction restrict the uptake of solvent through NR matrix.

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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.