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Licensed Unlicensed Requires Authentication Published by De Gruyter September 4, 2020

Enhancing the mechanical and water resistance performances of bamboo particle reinforced polypropylene composite through cell separation

  • Dan Ren , Xuexia Zhang , Zixuan Yu , Hankun Wang and Yan Yu EMAIL logo
From the journal Holzforschung


It is frequently observed that bamboo particle composites (BPCs) do not show higher mechanical performances than the corresponding wood particles composites (WPCs), although bulk bamboo is much stronger than wood in mechanical performances. Herein this phenomenon was demonstrated from the cell compositions in the applied bamboo particles. To address that, a simple method to physically separate bamboo fibers (BFs) and bamboo parenchyma cells (BPs) from a bamboo particle mixture was developed. Polypropylene (PP) composites with pure BFs, BPs, a mixture of BFs and BPs (BFs + BPs), wood particles (WPs) as fillers were prepared. The flexural and dynamic mechanical properties, water absorption, and thermal properties were determined. The BF/PP composites showed the best mechanical performances (MOR at 35 MPa, MOE at 2.4 GPa), followed by WP/PP, (BF + BP)/PP, and BP/PP. They also exhibited the lowest water absorption and thickness swelling. Little difference was found for the thermal decomposition properties. However, a lower activation energy of BF/PP compared with BP/PP implied an uneven dispersion of BFs and weaker interfacial interaction between BF and PP. The results suggest that the mechanical performances and water resistance of bamboo particle/polymer composites can be significantly improved through cell separation. However, interface modification should be applied if higher performances of BF/PP composites are required.

Corresponding author: Yan Yu, College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou, 350002, PR China; Institute of New Bamboo and Rattan Based Materials, International Center for Bamboo and Rattan, Beijing, 100102, PR China, E-mail:

Funding source: National Science Foundation of China

Award Identifier / Grant number: 31770600

Funding source: Fundamental Research Funds for the Central Universities of China

Award Identifier / Grant number: SWU117060

  1. Author contribution: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: This work was supported by National Science Foundation of China (31770600) and the Fundamental Research Funds for the Central Universities of China (SWU117060).

  3. Conflict of interest statement: The authors declare no conflicts of interest.


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Received: 2019-11-19
Accepted: 2020-06-25
Published Online: 2020-09-04
Published in Print: 2021-03-26

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