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Polypropylene (PP) is very potential as a technical composite matrix since it has good mechanical properties. And also, so many PP wastes are found in sheet forms that make them easy to be produced as thermoplastic composite. Kenaf as natural fiber is also potential as composite reinforcement, but t...
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id-itb.:156662017-10-09T10:32:50Z#TITLE_ALTERNATIVE# FALENCIA (NIM : 13706046); Dosen Pembimbing : Dr.Ir Hermawan Judawisastra; Akbar Hanif Dawam A, FELLA Indonesia Final Project INSTITUT TEKNOLOGI BANDUNG https://digilib.itb.ac.id/gdl/view/15666 Polypropylene (PP) is very potential as a technical composite matrix since it has good mechanical properties. And also, so many PP wastes are found in sheet forms that make them easy to be produced as thermoplastic composite. Kenaf as natural fiber is also potential as composite reinforcement, but their interfacial and impregnation problems degrade composite’s mechanical properties[4]. In this research, the influence of processing temperatures and chemical treatments (alkaline and permanganate) on fiber to mechanical properties of PP waste–kenaf composite will be investigated. Experimental and theoretical calculation of composite tensile strength and stiffness will be compared. <br /> <br /> <br /> <br /> <br /> The composites were made of PP wastes and unidirectional kenaf fiber and manufactured by hot press molding. The processing temperature variations were 185oC and 195oC. The chemical treatment variations were no treatment, alkaline treatment, and permanganate treatment. DSC and FTIR were done to fiber and matrix. Tensile properties of the fiber yarn and composites were characterized. Physical properties of composites were measured to determine the volume fraction of material constituent void. Observation with <br /> <br /> <br /> <br /> <br /> microscope was used to evaluate composite cross sections. Observation with SEM was done to composite’s fractography. <br /> <br /> <br /> <br /> <br /> Unidirectional Kenaf reinforced PP waste composite were well made. Increasing the processing temperature and fiber chemical treating was proved to increase composite’s <br /> <br /> <br /> <br /> <br /> mechanical properties. However, too high temperature and too much of chemical treatment could decrease composite tensile properties because of the degradation of reinforcing fiber. <br /> <br /> <br /> <br /> <br /> Alkaline treatment 4 hours 5% NaOH increased composite tensile strength by 96%. Permanganate treatment 1 hour 2% NaOH and 2 hours 0,2% KMnO4 didn’t significantly affect the composite tensile strength. However, permanganate fiber composite strength was not affected by processing temperature. When the temperature was raised from 175oC to <br /> <br /> <br /> <br /> <br /> 185oC, the tensile strength was increased by 132% but when the temperature was raised from 185oC to 195oC, the tensile strength was reduced by 60%. Composite strength model <br /> <br /> <br /> <br /> <br /> that fits the made composite was the rule of mixture and Rosen’s modification model based on yarn strength. Composite stiffness model that fits the made composite was rule of mixture based on fiber stiffness. text |
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Polypropylene (PP) is very potential as a technical composite matrix since it has good mechanical properties. And also, so many PP wastes are found in sheet forms that make them easy to be produced as thermoplastic composite. Kenaf as natural fiber is also potential as composite reinforcement, but their interfacial and impregnation problems degrade composite’s mechanical properties[4]. In this research, the influence of processing temperatures and chemical treatments (alkaline and permanganate) on fiber to mechanical properties of PP waste–kenaf composite will be investigated. Experimental and theoretical calculation of composite tensile strength and stiffness will be compared. <br />
<br />
<br />
<br />
<br />
The composites were made of PP wastes and unidirectional kenaf fiber and manufactured by hot press molding. The processing temperature variations were 185oC and 195oC. The chemical treatment variations were no treatment, alkaline treatment, and permanganate treatment. DSC and FTIR were done to fiber and matrix. Tensile properties of the fiber yarn and composites were characterized. Physical properties of composites were measured to determine the volume fraction of material constituent void. Observation with <br />
<br />
<br />
<br />
<br />
microscope was used to evaluate composite cross sections. Observation with SEM was done to composite’s fractography. <br />
<br />
<br />
<br />
<br />
Unidirectional Kenaf reinforced PP waste composite were well made. Increasing the processing temperature and fiber chemical treating was proved to increase composite’s <br />
<br />
<br />
<br />
<br />
mechanical properties. However, too high temperature and too much of chemical treatment could decrease composite tensile properties because of the degradation of reinforcing fiber. <br />
<br />
<br />
<br />
<br />
Alkaline treatment 4 hours 5% NaOH increased composite tensile strength by 96%. Permanganate treatment 1 hour 2% NaOH and 2 hours 0,2% KMnO4 didn’t significantly affect the composite tensile strength. However, permanganate fiber composite strength was not affected by processing temperature. When the temperature was raised from 175oC to <br />
<br />
<br />
<br />
<br />
185oC, the tensile strength was increased by 132% but when the temperature was raised from 185oC to 195oC, the tensile strength was reduced by 60%. Composite strength model <br />
<br />
<br />
<br />
<br />
that fits the made composite was the rule of mixture and Rosen’s modification model based on yarn strength. Composite stiffness model that fits the made composite was rule of mixture based on fiber stiffness. |
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Final Project |
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FALENCIA (NIM : 13706046); Dosen Pembimbing : Dr.Ir Hermawan Judawisastra; Akbar Hanif Dawam A, FELLA |
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FALENCIA (NIM : 13706046); Dosen Pembimbing : Dr.Ir Hermawan Judawisastra; Akbar Hanif Dawam A, FELLA #TITLE_ALTERNATIVE# |
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FALENCIA (NIM : 13706046); Dosen Pembimbing : Dr.Ir Hermawan Judawisastra; Akbar Hanif Dawam A, FELLA |
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FALENCIA (NIM : 13706046); Dosen Pembimbing : Dr.Ir Hermawan Judawisastra; Akbar Hanif Dawam A, FELLA |
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https://digilib.itb.ac.id/gdl/view/15666 |
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1820737518230831104 |