Designing Highly Flame-Retardant Wood Through an In Situ Chemical Modification Strategy

IF 3.9 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Langmuir Pub Date : 2025-02-21 DOI:10.1021/acs.langmuir.4c04605

Yi Sun, Wenlong Sun, KangKang Zhang, Siyu Cui, Xiong Shao, Jian Qiu, Yushan Yang, Jun Li

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Abstract

In order to improve the specimens’ flame-retardant qualities, ethyl orthosilicate was impregnated into them using a combination of the delignification process and the in situ growing approach. Lignification has been demonstrated to increase the cellular gap of the specimen and to maximize the impregnation of ethyl orthosilicate. Moreover, the in situ growth method results in the combination of specimens containing silica manufactured from ethyl orthosilicate, thereby forming a composite material with enhanced flame-retardant properties. The examination of the changes in the properties of the specimens before and after modification was conducted using FTIR spectroscopy, XRD, XPS, SEM, and other experimental techniques. The modified specimens exhibited higher properties in comparison to the untreated specimens. Furthermore, the modified specimens exhibited enhanced mechanical properties, characterized by an augmented compressive strength of 34.9 MPa and a strength-to-weight ratio of 158 MPa·cm·g^–1, in comparison to specimens that did not undergo the modification process. The results of experiments show that proposed green technology provides a new method for producing flame-retardant composites and could significantly improve the mechanical and flame-retardant qualities of wood.

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通过原位化学改性策略设计高阻燃木材

采用脱木质素法和原位生长法相结合的方法浸渍正硅酸乙酯，以提高试样的阻燃性能。木质素化已被证明增加了试样的细胞间隙，并最大限度地浸渍了正硅酸乙酯。此外，原位生长方法导致由正硅酸乙酯制造的含有二氧化硅的试样的组合，从而形成具有增强阻燃性能的复合材料。采用FTIR、XRD、XPS、SEM等实验技术对改性前后试样的性能变化进行了检测。与未经处理的样品相比，改性样品表现出更高的性能。与未进行改性处理的试样相比，改性试样的抗压强度提高了34.9 MPa，强度重量比提高了158 MPa·cm·g-1。实验结果表明，提出的绿色工艺为生产阻燃复合材料提供了一种新的方法，可以显著提高木材的机械性能和阻燃性能。

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来源期刊

Langmuir 化学-材料科学：综合

CiteScore

6.50

自引率

10.30%

发文量

1464

审稿时长

2.1 months

期刊介绍： Langmuir is an interdisciplinary journal publishing articles in the following subject categories: Colloids: surfactants and self-assembly, dispersions, emulsions, foams Interfaces: adsorption, reactions, films, forces Biological Interfaces: biocolloids, biomolecular and biomimetic materials Materials: nano- and mesostructured materials, polymers, gels, liquid crystals Electrochemistry: interfacial charge transfer, charge transport, electrocatalysis, electrokinetic phenomena, bioelectrochemistry Devices and Applications: sensors, fluidics, patterning, catalysis, photonic crystals However, when high-impact, original work is submitted that does not fit within the above categories, decisions to accept or decline such papers will be based on one criteria: What Would Irving Do? Langmuir ranks #2 in citations out of 136 journals in the category of Physical Chemistry with 113,157 total citations. The journal received an Impact Factor of 4.384*. This journal is also indexed in the categories of Materials Science (ranked #1) and Multidisciplinary Chemistry (ranked #5).