Thermal Characteristics of Okra Bast and Corn Husk Fibers Extracted via Alkalization

ABSTRACT

In this study, fibers were extracted from okra stems and corn husks via alkalization. The obtained fibers were subjected to physical and thermal analyses. It was found that okra bast fibers have better breaking strength and are finer than corn husk fibers. Corn husk fibers show high elongation at break rates. The paper also presents results of thermogravimetric analysis of the okra bast and corn husk fibers. Tests were carried out in oxygen and inert gas atmospheres. The temperature range of the main thermal decomposition stage was determined in the range of 290–400°C for thermo-oxidation and 290–420°C for pyrolysis investigation. Slight differences in the thermal resistances of the tested fibers were found. The maximum temperature in which both types of materials can used is determined. The calculated activation energy values show large-spread ranges.

摘要

在这项研究中, 通过碱化从黄秋葵茎和玉米壳中提取纤维. 对所得纤维进行物理和热分析. 结果表明, 黄秋葵韧皮纤维具有较好的断裂强度, 且比玉米壳纤维细. 玉米壳纤维的断裂伸长率较高. 本文还介绍了黄秋葵韧皮纤维和玉米壳纤维的热重分析结果. 试验在氧气和惰性气体环境中进行. 主要热分解阶段的温度范围为290–400°C (用于热氧化) 和290–420°C (用于热解研究. 测试纤维的热阻略有不同. 确定两种材料均可使用的最高温度. 计算的活化能值显示了较大的扩展范围.

关键词:

• 黄秋葵韧皮纤维
• 玉米壳纤维
• 农业剩余纤维
• 热性能
• 机械性能

KEYWORDS:

• Okra bast fibers
• corn husk fibers
• agro-residual fibers
• thermal properties
• mechanical properties

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

The authors disclose the receipt of the following financial support for the research, authorship, and publication of this article: the manuscript was partially financed by funds assigned for 14-148-1-21-28 statuary activity, by Lodz University of Technology, Institute of Materials Science of Textiles and Polymer Composites, Poland (DS and IK). The research contained in the following manuscript was made possible by the implementation of the Erasmus+ exchange program (EC).