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通过柠檬酸和次磷酸钠交联组合提高苎麻纤维线的拉伸强度

Tensile Strength Improvements of Ramie Fiber Threads through Combination of Citric Acid and Sodium Hypophosphite Cross-Linking.

作者信息

Wulandari Asri Peni, Awis Vira Putri Dinda, Budiono Ruly, Kusmoro Joko, Hidayat Sidiq Syamsul, Masruchin Nanang, Lubis Muhammad Adly Rahandi, Fatriasari Widya, Rachmawati Ulyaa

机构信息

Department of Biology, Faculty of Mathematics and Natural Science, Universitas Padjadjaran, Sumedang 45363, Indonesia.

Center for Study of Bioprospection of Natural Fiber and Bioresources, Faculty of Mathematics and Natural Science, Universitas Padjadjaran, Bandung 40132, Indonesia.

出版信息

Materials (Basel). 2023 Jun 30;16(13):4758. doi: 10.3390/ma16134758.

DOI:10.3390/ma16134758
PMID:37445071
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10343172/
Abstract

Ramie () is believed to be one of the strongest natural fibers, but it still remains behind synthetic materials in terms of tensile strength. In this study, ramie materials were prepared to evaluate the modification crosslinking effect of natural fiber. The aim is to optimize various concentrations of citric acid (CA) crosslinking by adding Sodium hypophosphite (NaPO2H2), which is activated at different temperatures, to obtain the highest tensile mechanical strength. This crosslinking effect has been confirmed by FTIR to show the esterification process in the molecular structure of cellulose. The changes in the character of the fiber surface were analyzed by SEM. The tensile strength increased from 62.33 MPa for 0% CA to 124-172.86 MPa for decorticated fiber with a CA concentration of 0.75-1.875% (/). A significant increase in tensile strength was observed more than 19 times when CA/SHP 1% was treated at an activation temperature of 110 °C with a superior tensile strength of 1290.63. The fiber crosslinked with CA/SHP should be recommended for application of Natural Fiber Reinforced Polymer Composite (NFRPC), which has the potential to use in functional textile and industrial sector automotive or construction.

摘要

苎麻被认为是最强的天然纤维之一，但在拉伸强度方面仍落后于合成材料。在本研究中，制备了苎麻材料以评估天然纤维的改性交联效果。目的是通过添加在不同温度下活化的次磷酸钠（NaPO₂H₂）来优化各种浓度的柠檬酸（CA）交联，以获得最高的拉伸机械强度。FTIR证实了这种交联效果，显示了纤维素分子结构中的酯化过程。通过扫描电子显微镜（SEM）分析了纤维表面特征的变化。对于脱胶纤维，拉伸强度从0% CA时的62.33 MPa增加到CA浓度为0.75 - 1.875%（/）时的124 - 172.86 MPa。当在110°C的活化温度下处理1%的CA/SHP时，观察到拉伸强度显著增加超过19倍，其拉伸强度高达1290.63。与CA/SHP交联的纤维推荐用于天然纤维增强聚合物复合材料（NFRPC），该材料有潜力应用于功能性纺织品以及汽车或建筑等工业领域。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c4c6/10343172/cccfccf697b3/materials-16-04758-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c4c6/10343172/e7498cc01960/materials-16-04758-g001.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c4c6/10343172/43dc86447496/materials-16-04758-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c4c6/10343172/08cf9c187152/materials-16-04758-g005a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c4c6/10343172/871da1dda947/materials-16-04758-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c4c6/10343172/3167f12295fe/materials-16-04758-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c4c6/10343172/cccfccf697b3/materials-16-04758-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c4c6/10343172/e7498cc01960/materials-16-04758-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c4c6/10343172/fafd17c32041/materials-16-04758-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c4c6/10343172/aed8743ca16e/materials-16-04758-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c4c6/10343172/43dc86447496/materials-16-04758-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c4c6/10343172/08cf9c187152/materials-16-04758-g005a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c4c6/10343172/871da1dda947/materials-16-04758-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c4c6/10343172/3167f12295fe/materials-16-04758-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c4c6/10343172/cccfccf697b3/materials-16-04758-g008.jpg

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