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基于球磨机械化学法的纤维素基阻燃剂的简便制备路线

Facile Preparation Route of Cellulose-Based Flame Retardant by Ball-Milling Mechanochemistry.

作者信息

Aaddouz Mohamed, Laoutid Fouad, Mariage Jerome, Lazko Jevgenij, Yada Bopha, Mejdoubi El Miloud, Toncheva Antoniya, Dubois Philippe

机构信息

Laboratory Applied Chemistry and Environmental (LCAE), Faculty of Sciences of Oujda, Mohamed 1st University, Oujda 60000, Morocco.

Materia Nova Research Center, UMONS Innovation Center, Avenue Nicolas Copernic 3, B-7000 Mons, Belgium.

出版信息

Molecules. 2024 Dec 23;29(24):6065. doi: 10.3390/molecules29246065.

DOI:10.3390/molecules29246065
PMID:39770153
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11677555/
Abstract

In this study, a sustainable cellulose-based flame-retardant additive was developed, characterized, and incorporated into polypropylene (PP). Microcrystalline cellulose (Cel) was chemically modified with PO using the solvent-free ball-milling mechanochemistry approach at room temperature. This modification enabled phosphorus grafting onto cellulose, significantly enhancing the cellulose charring ability and improving the thermal stability of the char as revealed by thermogravimetric analysis (TGA). The resulting product, Cel-P, containing 4.15 wt.% phosphorus, was incorporated and uniformly dispersed as a flame-retardant (FR) additive at 30 wt.% in PP through melt processing. The PP+30-Cel-P composite demonstrated improved char formation and FR properties, including reduction of both peak heat release rate (pHRR) and total heat release (THR) in mass loss cone calorimetry (MLC). Moreover, lower light absorptivity was obtained by smoke opacity tests as compared to PP filled with unmodified cellulose.

摘要

在本研究中，开发并表征了一种可持续的纤维素基阻燃添加剂，并将其引入聚丙烯（PP）中。在室温下，采用无溶剂球磨机械化学方法用磷酰化试剂（PO）对微晶纤维素（Cel）进行化学改性。这种改性使磷接枝到纤维素上，显著提高了纤维素的成炭能力，并通过热重分析（TGA）表明提高了炭的热稳定性。所得产物Cel-P含有4.15 wt.%的磷，通过熔融加工以30 wt.%的比例作为阻燃（FR）添加剂掺入并均匀分散在PP中。PP+30-Cel-P复合材料表现出改善的成炭性能和阻燃性能，包括在质量损失锥形量热法（MLC）中降低了峰值热释放速率（pHRR）和总热释放（THR）。此外，与填充未改性纤维素的PP相比，通过烟密度测试获得了更低的光吸收率。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/96a7/11677555/e94c6ffd4770/molecules-29-06065-sch001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/96a7/11677555/601341e0091d/molecules-29-06065-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/96a7/11677555/53922352197d/molecules-29-06065-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/96a7/11677555/e2e463e6f488/molecules-29-06065-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/96a7/11677555/205a0b127318/molecules-29-06065-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/96a7/11677555/9f34fbe0b2a9/molecules-29-06065-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/96a7/11677555/1a998cd3f965/molecules-29-06065-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/96a7/11677555/f50784634cab/molecules-29-06065-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/96a7/11677555/baa2f160118d/molecules-29-06065-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/96a7/11677555/84cdb6c11853/molecules-29-06065-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/96a7/11677555/e94c6ffd4770/molecules-29-06065-sch001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/96a7/11677555/601341e0091d/molecules-29-06065-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/96a7/11677555/53922352197d/molecules-29-06065-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/96a7/11677555/e2e463e6f488/molecules-29-06065-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/96a7/11677555/205a0b127318/molecules-29-06065-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/96a7/11677555/9f34fbe0b2a9/molecules-29-06065-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/96a7/11677555/1a998cd3f965/molecules-29-06065-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/96a7/11677555/f50784634cab/molecules-29-06065-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/96a7/11677555/baa2f160118d/molecules-29-06065-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/96a7/11677555/84cdb6c11853/molecules-29-06065-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/96a7/11677555/e94c6ffd4770/molecules-29-06065-sch001.jpg

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