Effect of Ramie Fabric Chemical Treatments on the Physical Properties of Thermoset Polylactic Acid (PLA) Composites
Ramie fabric-reinforced thermoset polylactic acid (PLA) composites were prepared by using heat pressing technology. Fabrics were treated with alkali, silane, and alkali–silane respectively, expecting an improvement of the interface between the fabric and the matrix. Scanning electron microscopy (SEM...
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doaj-33007af1b37943b99b79423d7ea3e5da2020-11-24T22:02:55ZengMDPI AGAerospace2226-43102018-09-01539310.3390/aerospace5030093aerospace5030093Effect of Ramie Fabric Chemical Treatments on the Physical Properties of Thermoset Polylactic Acid (PLA) CompositesChunhong Wang0Zilong Ren1Shan Li2Xiaosu Yi3School of Textile, Tianjin Polytechnic University, Tianjin 300387, ChinaSchool of Textile, Tianjin Polytechnic University, Tianjin 300387, ChinaChinatesta Textile Testing & Certification Services, Beijing 100025, ChinaBeijing Institute of Aeronautical Materials, Beijing 100095, ChinaRamie fabric-reinforced thermoset polylactic acid (PLA) composites were prepared by using heat pressing technology. Fabrics were treated with alkali, silane, and alkali–silane respectively, expecting an improvement of the interface between the fabric and the matrix. Scanning electron microscopy (SEM) results indicated that after alkali treatment, impurities on the fiber surface were removed and its diameter became finer. After the silane, and alkali–silane treatments, the contact angles of the ramie fibers increased by 14.26%, and 33.12%, respectively. The contact angle of the alkali–silane treated fiber reached 76.41°; this is beneficial for the adhesion between ramie fiber and the PLA. The research revealed that the tensile strength of the fiber increased after the alkali and silane treatments. A slight decrease was noticed on the tensile strength of fibers treated with alkali–silane. After all, three chemical treatments were done, the flexure strength of the ramie fabric-reinforced PLA composites, improved in all cases. Among the three treatments, the alkali–silane treatment demonstrated the best result, as far as the flexure strength and modulus of the fabricated composites were concerned. On the other hand, water absorption of the related composites decreased by 23.70%, which might contribute to the closer contact between the ramie fiber and the matrix. The ramie fabric-reinforced PLA composites, prepared in this study, can meet the standard requirements of aircraft interior structures and have favorable application foreground.http://www.mdpi.com/2226-4310/5/3/93fabricinterfacephysical propertiesthermosetting resin |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Chunhong Wang Zilong Ren Shan Li Xiaosu Yi |
spellingShingle |
Chunhong Wang Zilong Ren Shan Li Xiaosu Yi Effect of Ramie Fabric Chemical Treatments on the Physical Properties of Thermoset Polylactic Acid (PLA) Composites Aerospace fabric interface physical properties thermosetting resin |
author_facet |
Chunhong Wang Zilong Ren Shan Li Xiaosu Yi |
author_sort |
Chunhong Wang |
title |
Effect of Ramie Fabric Chemical Treatments on the Physical Properties of Thermoset Polylactic Acid (PLA) Composites |
title_short |
Effect of Ramie Fabric Chemical Treatments on the Physical Properties of Thermoset Polylactic Acid (PLA) Composites |
title_full |
Effect of Ramie Fabric Chemical Treatments on the Physical Properties of Thermoset Polylactic Acid (PLA) Composites |
title_fullStr |
Effect of Ramie Fabric Chemical Treatments on the Physical Properties of Thermoset Polylactic Acid (PLA) Composites |
title_full_unstemmed |
Effect of Ramie Fabric Chemical Treatments on the Physical Properties of Thermoset Polylactic Acid (PLA) Composites |
title_sort |
effect of ramie fabric chemical treatments on the physical properties of thermoset polylactic acid (pla) composites |
publisher |
MDPI AG |
series |
Aerospace |
issn |
2226-4310 |
publishDate |
2018-09-01 |
description |
Ramie fabric-reinforced thermoset polylactic acid (PLA) composites were prepared by using heat pressing technology. Fabrics were treated with alkali, silane, and alkali–silane respectively, expecting an improvement of the interface between the fabric and the matrix. Scanning electron microscopy (SEM) results indicated that after alkali treatment, impurities on the fiber surface were removed and its diameter became finer. After the silane, and alkali–silane treatments, the contact angles of the ramie fibers increased by 14.26%, and 33.12%, respectively. The contact angle of the alkali–silane treated fiber reached 76.41°; this is beneficial for the adhesion between ramie fiber and the PLA. The research revealed that the tensile strength of the fiber increased after the alkali and silane treatments. A slight decrease was noticed on the tensile strength of fibers treated with alkali–silane. After all, three chemical treatments were done, the flexure strength of the ramie fabric-reinforced PLA composites, improved in all cases. Among the three treatments, the alkali–silane treatment demonstrated the best result, as far as the flexure strength and modulus of the fabricated composites were concerned. On the other hand, water absorption of the related composites decreased by 23.70%, which might contribute to the closer contact between the ramie fiber and the matrix. The ramie fabric-reinforced PLA composites, prepared in this study, can meet the standard requirements of aircraft interior structures and have favorable application foreground. |
topic |
fabric interface physical properties thermosetting resin |
url |
http://www.mdpi.com/2226-4310/5/3/93 |
work_keys_str_mv |
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