Influence of chemical treatment on the properties of cement-paper hybrid composites for ceiling board application

Abstract

This study evaluates the effect of treated and untreated jute fiber/eggshell particulate reinforced cement-paper matrix composites for ceiling board application. Treated jute fiber (TJF) was obtained by immersing untreated jute fiber (UJF) into 1.25 M sodium hydroxide (NaOH) solution in a shaker water bath maintained at 40 °C for 4 h. Eggshells (ESP) were pulverized and sieved to -75μm. Samples were prepared by varying the fiber volume fraction from 0.5 to 2.5 wt.% in the composites. While other constituents such as the binder (cement) and eggshell were kept constant. An hydraulic press cold compaction molder was utilized in the production of the hybrid composites in a predetermined mix ratio designed based on previous research. The samples produced were cured for 7 and 14 days, then sundried for 36 h. The physical, thermal, mechanical and wear behaviour of the produced composites were evaluated while the surface morphology of the fractured splitting tensile samples were analyzed. The result reveals that TJF/ESP hybrid composites had better performance than UJF/ESP hybrid composites in most of the tests carried out. Increase in the number of curing days was found to also enhance the properties of the composite produced in majority of the test evaluated. The 0.5 wt.% UJF/ESP gave the least performance of all the composites developed. While 2.5 wt. % TJF/ESP showed an optimum properties among the composites tested. When compared with standard, it is concluded that the hybrid composites developed can be suitable for ceiling boards and also find possible application in wall partitioning.

Tensile, Flexural, and Morphological Properties of Jute/Oil Palm Pressed Fruit Fibers Reinforced High Density Polyethylene Hybrid Composites

“…Additionally, the number and diameter of the treated fibers vary as is observed between Figures 3b and 4b. increase in the percentage of cellulose at the fiber surface which prompts improved adhesion as confirmed by [30,33]. Additionally, the number and diameter of the treated fibers vary as is observed between Figures 3b and 4b.…”

“…Figures 3a and 4a show the presence of impurities such as lignin and hemicelluloses on the surface of the fibers with respective flaky and cloudy like appearances which are gums when compared to Figures 3b and 4b that shows fibers with rough and exposed surface; the impurities have been removed as a result of the chemical treatment given to the fibers [35]. The reduction in the amount of lignin and hemicellulose brings about an increase in the percentage of cellulose at the fiber surface which prompts improved adhesion as confirmed by [30,33]. Additionally, the number and diameter of the treated fibers vary as is observed between Figures 3b and 4b.…”

“…The EDX analysis also showed the presence of silica in the form of silicon and oxygen. Silica is known to be a hard ceramics material that improves the strength of a polymer matrix [33,34].…”

Effect of Surface Modification on the Properties of Polypropylene Matrix Reinforced with Coir Fibre and Yam Peel Particulate

“…The presence of treated natural fibres in polymers tends to increase thermal conductivity as compared to that of the untreated due to the fact that the thermal conductivity of individual fibre and particulate has been increased as a result of lignin and wax removal. The cumulative effect of treated yam peel at 8 wt.% addition may give rise to the most significant thermal conductivity improvement observed at that weight percent as compared to others samples [ 65 ]. This property significantly increases in YPP for both treated and untreated CY/YPP composites it substantiates the research work of [ 66 ] that noted reduced thermal conductivity of polypropylene with increasing particulate rice straw.…”

Carbon trading practices adoption for sustainable construction: A study of the barriers in a developing country

“…Researchers and experts in various fields (such as production, agriculture, and construction industries) are clamouring for a serious response from the government to guide against the future threats associated with global warming. One of the major factors aggravating global warming is the increase in the rate of greenhouse gas emissions of which carbon dioxide (CO 2 ) is the primary contributor (Adediran et al, 2020; Wang et al, 2019). Huang et al (2018) opined that infrastructures and buildings delivered to society by the construction industry consume substantial energy which is unrenewable, resulting in massive emissions of CO 2 .…”