Improvement in mechanical properties of sponge-gourd fibers through different chemical treatment as demonstrated by utilization of the Weibull distribution model

ABSTRACT

Sponge-gourd natural fibers obtained from Luffa cylindrica plant were chemically treated separately using 5−15 wt% NaOH, acetic anhydride and benzoyl chloride solutions. Surface morphological, mechanical and thermal characteristics of untreated and chemically treated fibers were studied. Untreated and modified surfaces of the fibers were characterized by field emission scanning electron microscopy. Tensile tests were carried out by equal length of single fibers to obtain their mechanical properties. The two-parameter Weibull distribution model was applied to find the variation in mechanical properties. Tensile strength, elastic modulus and thermal stability of the fibers were found to significantly increase after chemical treatment.

摘要

从Luffa-cylindrica厂获得的丝瓜天然纤维分别用5～15重量%的NaOH、醋酐和苯甲酰氯溶液进行化学处理。研究了未处理和化学处理的纤维的表面形态、机械和热特性。未经处理和改性的纤维表面用场发射扫描电子显微镜表征。拉伸试验采用等长单纤维进行，以获得其力学性能。采用双参数Weibull分布模型求出力学性能的变化。纤维经化学处理后，其拉伸强度、弹性模量和热稳定性均显著提高

KEYWORDS:

• Sponge-gourd fiber
• chemical treatment
• surface morphology
• mechanical properties
• Griffith model
• Weibull distribution model. Weibull

关键词:

• 丝瓜纤维
• 化学处理
• 表面形貌
• 力学性能
• 格里菲思模型
• 分布模型

Acknowledgment

The authors gratefully acknowledge the Bangladesh Council of Scientific and Industrial Research (BCSIR) for allowing facilities for this research.

Additional information

Funding

This study was financially supported by the Bangladesh University of Engineering and Technology (BUET).