Tensile Properties of Single Cellulosic Bamboo Fiber (Gigantochloa Scortechinii) Using Response Surface Methodology

ABSTRACT

Gigantochloa scortechinii is one of the most well-known bamboo species in Malaysia because of its advantageous physical, morphological and strength properties. This study presented the effect of alkali treatment conditions of single cellulosic bamboo strips fiber following tensile test and optimized the parameters through response surface methodology based on central composite design. Bamboo strips fiber was treated under various alkali concentrations of 2, 4, 6 and 8 wt.% and soaking times of 1, 3, 6, 12, 18 and 24 h. Results showed that the optimum tensile strength at 4 wt.% alkali concentration and 12 h soaking time was improved by 28% compared with water retting condition. The design-Expert software was used to optimize the tensile properties of single cellulosic bamboo strips fiber. The effect of two independent variables, namely, alkali concentration and soaking time, on the optimized tensile properties of a single cellulosic bamboo strips fiber was investigated. Results showed acceptable R² and high R²_Adj correlation coefficients for tensile strength, reaching 0.6926 and 0.9575, respectively. The high R² and R²_Adj correlation coefficients for tensile modulus reached 0.9376 and 0.8931, respectively. Overall results showed that the confirmatory experiments show that the error between predicted and actual values does not exceed 5%. thus, the model can be effectively used to predict tensile properties.

摘要

巨竹是马来西亚最著名的竹种之一，因其优越的物理、形态和强度特性. 摘要通过拉伸试验，研究了单根纤维素竹条纤维碱处理条件的影响，并采用基于中心复合设计的响应面法对参数进行了优化. 对竹条纤维进行2、4、6、8 wt.%不同碱浓度的处理，浸泡时间分别为1、3、6、12、18、24h. 结果表明，最佳拉伸强度为4wt. 与水浸条件相比，%碱浓度和12h浸泡时间提高了28%. 利用设计专家软件对单纤维竹条纤维的拉伸性能进行了优化. 研究了碱浓度和浸泡时间两个自变量对单纤维竹条纤维拉伸性能的影响. 结果表明，抗拉强度的相关系数R2和R2Adj均可接受，分别为0.6926和0.9575. 拉伸模量的高R2和R2Adj相关系数分别为0.9376和0.8931. 总体结果表明，验证性实验表明，预测值与实测值的误差不超过5%. 因此，该模型可以有效地预测材料的拉伸性能.

KEYWORDS:

• Alkaline treatment
• tensile properties
• response surface methodology
• ANOVA

关键词:

• 碱性治疗
• 拉伸性能
• 响应面方法

Acknowledgments

We acknowledge Universiti Kebangsaan Malaysia and Ministry of Education Malaysia for their financial support under Research Grant GUP-2018-093.

Additional information

Funding

This work was supported by the Universiti Kebangsaan Malaysia and Ministry of Education Malaysia [GUP-2018-093].