期刊名称：Eastern-European Journal of Enterprise Technologies
印刷版ISSN：1729-3774
电子版ISSN：1729-4061
出版年度：2021
卷号：1
期号：6
页码：48-56
DOI：10.15587/1729-4061.2021.217730
语种：English
出版社：PC Technology Center
摘要：The development of technology has increased the need for composite materials, where the technology of composite materials with natural?fiber?reinforcement is growing.?The existence of natural?fiber?is very abundant, and it has not been fully utilized. Until now, the use of?coconut?fiber?was still limited to the furniture and household handicraft industries.?Coconut?coir?fiber?has the potential as a raw material for composite materials. The lack of?strength?of the bonds is due to the hydrophobic?fiber, and the?fiber?surface?is less rough, and dirty. This study evaluates the coir?surface?characteristic of the?fiber?and its bounding with the polyester matrix after being treated by?limestone?water. The scanning electron microscope was used for observing?fiber?surfaces and?surface?matrix.?The?wettability?test to observe?fiber?surface?energy was performed.?Interface?shear?strength?to evaluate the bonds between fibers and matrix was determined.?Coconut?coir fibers were immersed in?limestone?water, with a 5?% percentage of?limestone?and time variations of 0, 4, 8, 12, 16, and 20?hours. The scanning microscope electron observations of fibers show that the?fiber?surface?tends to be clean, rough, and grooved. The highest?surface?energy was obtained at 40.74?mN/m during the?limestone?water?immersion for 8?hours. The highest value of the?interface?shear?strength?between the?fiber?and the matrix is 3.80?MPa during 8-hour immersion, 0, 4, 12, 16, and 20-hour immersion, respectively, 3.02, 3.09, 3.52, 3.47, and 4.40?MPa. The results showed that coir?fiber?with?limestone?water?immersion for 8?hours had a clean, rough, and grooved?surface?so that the bond between the?fiber?and matrix was better. This research shows that?limestone?water?can be used as a?fiber?treatment?medium which?was?natural.
