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Effects of Alkalization on Physical and Mechanical Properties of Biologically Degummed Okra Bast and Corn Husk Fibers
Journal of Natural Fibers ( IF 3.5 ) Pub Date : 2020-08-10
G. M. Arifuzzaman Khan, Nazire Deniz Yilmaz, Kenan Yilmaz

In this study, biologically degummed okra bast and corn husk fibers were subjected to alkalization processes. Alkalization treatments resulted in decrease of linear density of the biologically degummed fibers. Increment in alkali concentration resulted in an initial increase then a successive decrease in all tensile indicators: initial modulus, breaking tenacity and breaking elongation. 3 g/L NaOH-treated fibers showed the best tensile characteristics for both okra bast and corn husk fibers. The IR spectra analysis suggested elimination of extracellulosic materials upon alkaline treatment. The ranges for properties of the produced okra bast and corn husk fibers can be summarized in consecutive order as linear density of 9.7–12.3 and 20.0–24.3 tex; initial modulus between 1257-1897 and 156.4–354.6 cN/tex; breaking tenacity range in 28.0–46.8 and 6.37–15.2 cN/tex; and elongation in the range 2.0–2.5% and 8.7–19.9%. The properties of obtained okra bast fibers are found to be superior to corn husk fibers and comparable to that of conventional bast fibers.



中文翻译:

碱化对生物脱胶的秋葵韧皮和玉米皮纤维物理力学性能的影响

在这项研究中,生物脱胶的秋葵韧皮和玉米壳纤维经过碱化处理。碱化处理导致生物脱胶纤维的线密度降低。碱浓度的增加导致所有拉伸指示剂先增加然后连续减少:初始模量,断裂韧度和断裂伸长率。3 g / L NaOH处理的纤维对秋葵韧皮和玉米皮纤维均表现出最佳的拉伸特性。红外光谱分析表明,碱性处理后可消除纤维素外物质。生产的秋葵韧皮和玉米皮纤维的性能范围可以连续顺序概括为9.7-12.3和20.0-24.3 tex的线密度。初始模量介于1257-1897和156.4–354.6 cN / tex之间;在28.0–46.8和6中打破韧性范围。37–15.2 cN / tex; 伸长率范围为2.0–2.5%和8.7–19.9%。发现获得的秋葵韧皮纤维的性能优于玉米壳纤维并且可与常规韧皮纤维相媲美。

更新日期:2020-08-10
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