不同纤维成熟度下赛奥特纤维的化学-机械提取及表征

IF 1.3 4区 农林科学 Q2 MATERIALS SCIENCE, PAPER & WOOD Cellulose Chemistry and Technology Pub Date : 2023-02-28 DOI:10.35812/cellulosechemtechnol.2023.57.03
Jennifer Bandao-Antonio, J. M. A. DIAZ
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引用次数: 0

摘要

“纤维素植物纤维是复合材料的良好增强材料,因为它们价格便宜,重量轻,并且具有良好的机械性能。晶体部分的分离暴露了稳定的氢键网络,可以与其他基质形成分子间键,如淀粉、聚乙烯醇和壳聚糖等。干燥和未干燥的成熟程度不同的赛叶葡萄(石竹)经过统一的化学机械提取程序以获得结晶纤维。采用差示扫描量热法(DSC)、傅里叶红外光谱(FTIR)和扫描电镜(SEM)对化学机械提取的纤维进行了表征。DSC热图显示,晒干和成熟的样品表现出最窄的吸热,表明无定形结构的存在较少。FTIR光谱显示,纤维样品中官能团的数量随成熟度的增加而减少。SEM显微照片显示,与从年轻和中间部分提取的样品相比,成熟部分的sayote葡萄藤具有更多的纤维和有序特征。此外,化学机械提取和x射线衍射(XRD)分析表明,成熟的晒干的sayote藤纤维的相对结晶度指数为65%。葡萄成熟部分的纤维产量为9%。塞奥藤是一种很有前途的用于复合材料制造的结晶纤维来源。”
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CHEMO-MECHANICAL EXTRACTION AND CHARACTERIZATION OF SAYOTE (SECHIUM EDULE) FIBERS AT VARYING FIBER MATURITY
"Cellulosic plant fibers are good reinforcing materials for composites because they are cheap, light weight, and exhibit good mechanical properties. The isolation of the crystalline portion exposes the stable hydrogen bond network that can form intermolecular bonding with other matrices, such as starch, polyvinyl alcohol and chitosan, among others. Sundried and undried sayote (Sechium edule) vines, of varying degrees of maturity, were subjected to uniform chemomechanical extraction procedures to obtain crystalline fibers. The chemo-mechanically extracted fibers were characterized using differential scanning calorimetry (DSC), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). DSC thermograms revealed that the sun-dried and mature sample exhibited the narrowest endotherm, indicating the presence of fewer amorphous structures. FTIR spectra showed that the numbers of functional groups present in the fiber samples decreased with increasing degree of maturity. SEM micrographs reveal that the mature portion of the sayote vine had more fibrous and orderly features, compared to the samples extracted from the younger and intermediate portions. Further, chemo-mechanical extraction and X-ray diffraction (XRD) analysis of fibers from mature, sun-dried sayote vines also revealed a relative crystallinity index of the extracted fiber of 65%. The fiber yield from the mature portion of the vine was 9%. Sayote (Sechium edule) vine can be a promising source of crystalline fibers for composite fabrication."
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来源期刊
Cellulose Chemistry and Technology
Cellulose Chemistry and Technology 工程技术-材料科学:纸与木材
CiteScore
2.30
自引率
23.10%
发文量
81
审稿时长
7.3 months
期刊介绍: Cellulose Chemistry and Technology covers the study and exploitation of the industrial applications of carbohydrate polymers in areas such as food, textiles, paper, wood, adhesives, pharmaceuticals, oil field applications and industrial chemistry. Topics include: • studies of structure and properties • biological and industrial development • analytical methods • chemical and microbiological modifications • interactions with other materials
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