Abstract
The aim of this work was to enhance the performance of a wood pulp/polylactic acid (PLA) biocomposite using epoxidized natural rubber (ENR)–grafted-modified microfibrillated cellulose (MFC) as a novel compatibilizer. MFC was modified by two different methods of silanization:one with 3-(trimethoxysilyl) propyl methacrylate and the other with 3-aminopropyltriethoxyl silane. The two types of modified MFC were grafted onto ENR via a solution-casting method. Compared with the uncompatibilized biocomposite, the flexural strength and impact resistance of the biocomposite compatibilized with ENR-amino silanized MFC were increased by 168% and 261%, respectively. SEM images and DMTA analysis confirmed the compatibility among the three phases of pulp, PLA, and ENR. Meanwhile, the use of ENR-methacrylate silanized MFC as a compatibilizer in the biocomposite also demonstrated the improvement of compatibility compared with non-MFC and MFC systems. The durability of the biocomposites was assessed in an accelerated weathering test. The pulp/PLA/ENR-methacrylate silanized MFC showed the lowest degradation rate, due to the methacrylate group of silane acted as a chromophore to mitigate UV absorption.
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Acknowledgements
This work was supported by Prince of Songkla University, Thailand (Project No. SCI6402020S).
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Funding was received for this work. All of the sources of funding for the work described in this publication are acknowledged below: financial support by Prince of Songkla University (Project Number SCI6402020S). Prince of Songkla University: study design, data analysis, and result interpretation.
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TK: conceptualization, methodology formal analysis, funding acquisition, investigation, project administration, resources, supervision, validation, writing—original draft, writing—review & editing. SK: methodology, formal analysis, investigation, validation, data curation, writing—review & editing, visualization. RH: methodology, resources.
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Kittikorn, T., Kadea, S. & Hedthong, R. Effect of Epoxidized Natural Rubber-Grafted-Modified Microfibrillated Cellulose to Compatibility in Wood Pulp/Polylactic Acid Biocomposite: Mechanical–Thermal and Durability Analysis. J Polym Environ 31, 2473–2485 (2023). https://doi.org/10.1007/s10924-023-02775-4
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DOI: https://doi.org/10.1007/s10924-023-02775-4