Biocomposite Optimization with NaOH-modified Bagasse Fiber, Polybutylene Succinate, and Poly(Lactic Acid) using RSM Approach

Authors

  • Pei Pei Department of Information Science and Engineering, Changsha Normal University, Changsha 410000, PR China
  • Rui Zou Department of Information Science and Engineering, Changsha Normal University, Changsha 410000, PR China
  • Xinyao Wang Department of Information Science and Engineering, Changsha Normal University, Changsha 410000, PR China
  • Jinyan Liu Department of Information Science and Engineering, Changsha Normal University, Changsha 410000, PR China
  • Lulu Liu Department of Information Science and Engineering, Changsha Normal University, Changsha 410000, PR China
  • Xiaoyu Deng Department of Information Science and Engineering, Changsha Normal University, Changsha 410000, PR China
  • Xuehua Li Department of Information Science and Engineering, Changsha Normal University, Changsha 410000, PR China
  • Menghui Yu School of Light Industry Science and Engineering, TUST, Tianjin University of Science and Technology, Tianjin 300000, PR China
  • Jia Tan Department of Information Science and Engineering, Changsha Normal University, Changsha 410000, PR China
  • Shizhong Li Institute of Nuclear and New Energy Technology, Tsinghua University, Tsinghua Garden, Beijing 100084, PR China

Keywords:

NaOH modified bagasse fiber, Polybutylene succinate, Poly(lactic acid), Novel biocomposite, Box-Behnken design

Abstract

Alkali-treated bagasse fiber was used as a process variable for optimization of the properties of polybutylene succinate/poly(lactic acid)-based biocomposites using Box-Behnken design (BBD) and response surface methodology (RSM). The optimum conditions for three factors, i.e., NaOH-treated bagasse fiber (0.55 to 1.65 g), polybutylene succinate (1.1 to 2.3 g), and poly(lactic acid) (2.2 to 3.4 g) on the bending strength of biocomposite were investigated. The optimum combination was 0.91 g of NaOH-treated bagasse fiber, 1.14 g of polybutylene succinate, and 3.10 g of poly(lactic acid). The bending strength for NaOH-treated bagasse fiber/polybutylene succinate/ poly(lactic acid) composite was 27.0 MPa, which was 26.0% higher than native bagasse fiber-based composite. The composites were also characterized by thermogravimetric analysis, mechanical testing, Fourier transform infrared, scanning electron microscopy, water absorption, and contact angle tests. Results demonstrated that the bending strength, impact strength, and tensile strength of alkali treated bagasse fiber-based biocomposite increased by 26.0%, 15.5%, and 23.3%, separately, compared with native bagasse-based composite after sequential homogenization, compounding, and hot pressing. The hydrophobicity for alkali-treated bagasse fiber/PBS/PLA was also improved. Thus, NaOH-treated biomass materials/biodegradable polymer was judged to be suitable for preparing green composite materials.

 

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Published

2023-07-10

Issue

Vol. 18 No. 3 (2023)

Section

Research Article or Brief Communication