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Published in: Cellulose 5/2023

03-02-2023 | Original Research

Hygrothermal aging behavior and mechanical properties of modified ramie fiber reinforced polyethylene terephthalate glycol composites

Authors: Wei Li, Wenqing Du, Wenbin Li, Dongzhi Chen, Yang Liu, Yiwei Ouyang

Published in: Cellulose | Issue 5/2023

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Abstract

In this work, the hygrothermal aging behavior, finite element analysis and mechanical properties of the ramie fiber (RF) reinforced polyethylene terephthalate glycol (PETG) composites modified with silane coupling agent and carbon nanotubes (CNTs) were investigated. The results show that after 90-days hygrothermal aging, the RF/PETG composites with untreated, KH550-treated, 0.5% CNT-treated and 1.0% CNT-treated modifications have the low water uptakes of 4.55%, 4.36%, 4.30% and 4.15%, respectively. The surface modifications of ramie fibers have no obvious influence on the water uptakes of the RF/PETG composites, which is related to the hydrophilicity difference of surface and cross sections of the RF/PETG composites. The moisture absorption behaviors of the RF/PETG composites conform to Fick’s water diffusion law. The results of the finite element analysis of the RF/PETG composites show a good consistency with the experimental results of the water absorption. As compared with untreated composites, the bending strengths of RF/PETG composites modified with silane coupling agent, 0.5 wt% CNTs and 1.0 wt% CNTs increased with 8.5%, 16.9%, and 20.5%, respectively. The bending strength and modulus of the RF/PETG composites first rapidly decrease and then slowly decrease with the increase of aging time. The RF/PETG composites show different bending fracture behaviors before and after 90-days hygrothermal aging. The developed RF/PETG composites have low water absorption and good mechanical properties, which can broaden the research and application of ramie fiber reinforced composites.

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Literature
go back to reference Yorseng K, Rangappa SM, Pulikkalparambil H, Siengchin S, Parameswaranpillai J (2020) Accelerated weathering studies of kenaf/sisal fiber fabric reinforced fully biobased hybrid bioepoxy composites for semi-structural applications: morphology, thermo-mechanical, water absorption behavior and surface hydrophobicity. Constr Build Mater 235:117464. https://doi.org/10.1016/j.conbuildmat.2019.117464CrossRef Yorseng K, Rangappa SM, Pulikkalparambil H, Siengchin S, Parameswaranpillai J (2020) Accelerated weathering studies of kenaf/sisal fiber fabric reinforced fully biobased hybrid bioepoxy composites for semi-structural applications: morphology, thermo-mechanical, water absorption behavior and surface hydrophobicity. Constr Build Mater 235:117464. https://​doi.​org/​10.​1016/​j.​conbuildmat.​2019.​117464CrossRef
Metadata
Title
Hygrothermal aging behavior and mechanical properties of modified ramie fiber reinforced polyethylene terephthalate glycol composites
Authors
Wei Li
Wenqing Du
Wenbin Li
Dongzhi Chen
Yang Liu
Yiwei Ouyang
Publication date
03-02-2023
Publisher
Springer Netherlands
Published in
Cellulose / Issue 5/2023
Print ISSN: 0969-0239
Electronic ISSN: 1572-882X
DOI
https://doi.org/10.1007/s10570-023-05064-4

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