scholarly journals PENGARUH PRESENTASE ALKALISASI NaOH TERHADAP KEKUATAN TARIK MATERIAL KOMPOSIT SERAT DAUN NANAS POLYESTER DENGAN METODE VACUUM INFUSION

ROTOR ◽  
2019 ◽  
Vol 12 (1) ◽  
pp. 5
Author(s):  
Mohamad Irkham Mamungkas ◽  
Nur Subeki ◽  
Arief Andrian N.
Keyword(s):  
Tensile Strength ◽  
Test Results ◽  
Vacuum Infusion ◽  
Pineapple Leaf Fiber ◽  
Infusion Method ◽  
Naoh Treatment ◽  
Reinforcing Fiber ◽  
Pineapple Leaves ◽  
Type Of Fracture ◽  
Leaf Fiber

Pineapple leaf fiber is currently widely used in furniture and handicraft industries (UKM) because besides being easily available, inexpensive, does not endanger health, can reduce environmental pollution so that later on as a composite reinforcing fiber can overcome environmental problems. From the considerations above, this study aims to determine the effect of the alkalization treatment (NaOH) on the tensile strength test of pineapple leaf fibers by vacuum infusion method and to determine the type of fracture of pineapple leaf fiber composites after tensile testing. Before it is made into a composite of pineapple leaves, it is soaked for 2 hours. Manufacture of composite materials based on ASTM D683-03 standard. From the composite tensile test results obtained the highest average tensile strength in specimens treated with NaOH 6% which is 112 MPa. While the lowest at 0% NaOH treatment is 68 MPa. Composites treated with NaOH have higher agility than those not treated with NaOH. The highest agility is found in composites with the highest NaOH treatment.

Mechanical and Thermal Properties of Silane Treated Pineapple Leaf Fiber Reinforced Polylactic Acid Composites

2015 ◽  
Vol 659 ◽  
pp. 446-452 ◽  
Author(s):  
Supatra Pratumshat ◽  
Phutthachat Soison ◽  
Sukunya Ross
Keyword(s):  
Tensile Strength ◽  
Thermal Properties ◽  
Impact Strength ◽  
Fiber Content ◽  
Poly Lactic Acid ◽  
Mechanical And Thermal Properties ◽  
Silane Coupling Agents ◽  
Pineapple Leaf Fiber ◽  
Treated Fiber ◽  
Leaf Fiber

In this work, the mechanical and thermal properties of pineapple leaf fiber (PALF)/poly (lactic acid) (PLA) composites were studied. Pineapple leaf fibers were pretreated with 4 %wt sodium hydroxide solution followed by various silane solutions i.e. γ-(aminopropyl) trimethoxy silane (APS), γ-methacrylate propyl trimethoxy (A174) and bis [3-(triethoxysilyl) propyl] tetrasulfide (Si69). FTIR results show a significant functional groups of C=O and C=C of methacrylic group, NH2group and Si-O which are the characteristic of these silane coupling agents. SEM micrographs of pretreated PALF showed a rough surface while untreated and silane treated PALF revealed less roughness. It was found that the tensile strength at break of PLA is 56 MPa and tensile strength of composites decreased when fiber content increased. The tensile modulus of silane treated PALF composites were higher than PLA, whereas their impact strength were similar to PLA. Si69 treated PALF showed lower impact strength compared to the others silanes treated fiber which indicates more phase separation between fiber and matrix. This is related to high percentage of crystallinity of composite from Si69 treated fiber. It was also found that the addition of PALF did not change the glass transition temperature and melting temperature of PLA while the percentage of crystallinity increases as the fiber content increased. In addition WAXS study of composite from Si69 treated fiber reveals sharp crystalline peaks of PLA while the others silane treatments show amorphous characteristic of PLA.

scholarly journals CHARACTERIZATION OF COMPOSITE CONTAINING LDPE (LOW DENSITY POLY ETHYLENE) AND MODIFIED PINEAPPLE LEAF FIBER

2020 ◽  
Vol 21 (4) ◽  
pp. 184
Author(s):  
Lestari Wardani ◽  
Noerati Noerati ◽  
Doni Sugiyana
Keyword(s):  
Tensile Strength ◽  
Thermal Properties ◽  
Polymer Matrix ◽  
Natural Fiber ◽  
Strength Properties ◽  
Low Density ◽  
Pineapple Leaf Fiber ◽  
Poly Ethylene ◽  
Leaf Fiber

CHARACTERIZATION OF COMPOSITE CONTAINING LDPE ( LOW DENSITY POLY ETHYLENE) AND MODIFIED PINEAPPLE LEAF FIBER. Pineapple leaf fiber could be used as a reinforcing material in natural fiber composites production with a synthetic polymer matrix. The typical problem in this process was the weak bond between the fiber component and the matrix. This study aimed to improve the bonds strength between pineapple leaf fibers and the polymer matrix of LDPE (Low Density Poly Ethylene) by modifying pineapple leaf fibers. The modification of pineapple leaf fibers was carried out through an enzymatic process using the xylanase enzyme. A modified fiber was then used as a fiber component in the composite using a commercial LDPE plastic matrix. Composites were made by the sandwich method using a hotpress machine at a temperature of 130 °C for 10 minutes. The evaluation of the composites were carried out by testing the tensile strength properties using the Tensolab tool and thermal properties using the TGA (Thermal Gravimetry Analysis) instrument. The results of the mechanical properties test of the composite showed the modified pineapple leaf fiber-based composite had a better tensile strength (34.3 MPa) than the untreated pineapple leaf fiber-based composite (30.2 MPa). The results of the thermal properties test showed the decreasing of the mass occurred at temperature of 300-350 °C due to degradation of the fiber,and it completely degraded at temperature of 450 °C.

Effect of Mastication Time on the Properties of Stearic Acid Coated Pineapple Leaf Fiber Reinforced Natural Rubber

2019 ◽  
Vol 824 ◽  
pp. 100-106
Author(s):  
Thapanee Wongpreedee ◽  
Karine Mougin ◽  
Taweechai Amornsakchai
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Stearic Acid ◽  
Natural Rubber ◽  
Average Diameter ◽  
Pineapple Leaf Fiber ◽  
Roll Mill ◽  
High Level ◽  
Acid Coating ◽  
Leaf Fiber

Pineapple leaf fiber (PALF) having an average diameter and length of about 4 μm and 6 mm, respectively, was used as reinforcing element for natural rubber (NR) composites. PALF was coated with different amount of stearic acid at 10, 30 and 50 wt% of PALF. PALF-NR composites containing two levels of PALF at 5 and 10 part per hundred rubber (phr) were prepared in a two roll mill. Mastication times of 2, 4 and 8 min were used. Tensile stress-strain curves and fracture surfaces of both untreated PALF and stearic acid coated PALF (SA-PALF) reinforced NR prepared with different mastication times were compared. At low level of PALF where aggregation was not a problem, stearic coating had adverse effect on mechanical properties due to the slippery PALF-rubber interface. At high level of PALF, the coating gave composites with higher tensile strength and strain at break. Moreover, tensile strength and strain at break increased with increasing mastication time. This indicates that stearic acid coating reduces the formation of PALF aggregations and allows PALF to work effectively.

Influence of Alkali Treatment and Fiber Content on Mechanical Properties of Pineapple Leaf Fiber (PALF)-Reinforced Cement-Based Composites via Full Factorial Design

2020 ◽  
Vol 1005 ◽  
pp. 65-75
Author(s):  
Charmane Dawn H. Esper ◽  
Hana Astrid R. Canseco
Keyword(s):  
Tensile Strength ◽  
Flexural Strength ◽  
Alkali Treatment ◽  
The Philippines ◽  
Fiber Content ◽  
P Value ◽  
Tropical Regions ◽  
Pineapple Leaf Fiber ◽  
Full Factorial ◽  
Leaf Fiber

In tropical regions such as the Philippines, pineapple leaf fiber (PALF) is abundantly available as a low-cost and renewable source for industrial purposes. In this research, PALF was used as a reinforcing material for cement-based composites to open up further possibilities in waste management. Since natural fibers are not fully compatible with the matrix due to their hydrophilic nature, surface treatment is necessary to enhance the fiber-matrix bonding. Fibers were treated using sodium hydroxide (NaOH) with varying concentrations (4%, 8% and 12%) for 6-hr immersion time at room temperature. PALF was then added at varying content (1%, 4% and 7% w/w cement) to the concrete mixture with a design mix ratio of 2:1 (sand: cement) and a constant water-cement ratio of 0.55. The samples were mechanically characterized after 28 curing days following ASTM C209 and ASTM C473. Full factorial experimental design (FFED) was used to investigate the effects of alkali treatment and the fiber content on the mechanical strengths of the composite. Experimental methods, analysis of variance (ANOVA) and normality test were carried out to evaluate, analyze and validate the results. The best results for tensile strength parallel to the surface and flexural strength at 2.028 MPa and 1.495 kN, respectively, were observed at composites with 1% PALF with 4% NaOH. Meanwhile, composites with 1% PALF with 12% NaOH showed the best result for tensile strength perpendicular to the surface at 1.681 MPa. According to ANOVA results, only the model for the tensile strength perpendicular to the surface showed a curvilinear behavior (p-value=0.012). Results revealed that the factor with the most significant effect was the interaction of the fiber content and alkali treatment on the tensile strength parallel to the surface (p-value=0.000), tensile strength perpendicular to the surface (p-value=0.001) and flexural strength (p-value=0.001).

scholarly journals Improvement of Physicomechanical Properties of Pineapple Leaf Fiber Reinforced Composite

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
K. Z. M. Abdul Motaleb ◽  
Md Shariful Islam ◽  
Mohammad B. Hoque
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Water Uptake ◽  
Bending Strength ◽  
Alkali Treatment ◽  
Fiber Surface ◽  
Fiber Content ◽  
Pineapple Leaf Fiber ◽  
Bending Modulus ◽  
Leaf Fiber

Pineapple leaf fiber (PALF) reinforced polypropylene (PP) composites were prepared by compression molding. The fiber content varied from 25% to 45% by weight. Water uptake percentages of the composites containing various wt% of fiber were measured. All the composites demonstrated lower water uptake percentages and maximum of 1.93% for 45 wt% PALF/PP composite treated with 7(w/v)% NaOH. Tensile Strength (TS), Tensile Modulus (TM), Elongation at Break (Eb %), Bending Strength (BS), Bending Modulus (BM), and Impact Strength (IS) were evaluated for various fiber content. The 45 wt% PALF/PP composite exhibited an increase of 210% TS, 412% TM, 155% BS, 265% BM, and 140% IS compared to PP matrix. Moreover, with the increasing of fiber content, all the mechanical properties increase significantly; for example, 45 wt% fiber loading exhibited the best mechanical property. Fibers were also treated with different concentration of NaOH and the effects of alkali concentrations were observed. The composite treated with 7 (w/v)% NaOH exhibited an increase of 25.35% TS, 43.45% TM, 15.78% BS, and 52% BM but 23.11% decrease of IS compared to untreated composite. Alkali treatment improved the adhesive characteristics of fiber surface by removing natural impurities, hence improving the mechanical properties. However, over 7% NaOH concentration of the tensile strength of the composite reduced slightly due to overexposure of fibers to NaOH.

Producing Paper Using Pineapple Leaf Fiber

2011 ◽  
Vol 383-390 ◽  
pp. 3382-3386 ◽  
Author(s):  
Yusri Yusof ◽  
Mohd Rizal Ahmad ◽  
Wahab Saidin ◽  
Mohammad Sukri Mustapa ◽  
Mohd Salleh Tahar
Keyword(s):  
Mechanical Properties ◽  
Stress Testing ◽  
Tensile Force ◽  
Testing Machine ◽  
Raw Material ◽  
Test Results ◽  
Paper Production ◽  
Pineapple Leaf Fiber ◽  
Universal Testing ◽  
Leaf Fiber

Experiments using pineapple leaf fiber as raw material in paper production have been conducted to assess the advantages in terms of mechanical properties, especially tensile strength, tearing strength and thickness of the paper. In this paper, samples of pineapple leaf fiber is mixed with a recycle newspapers in different composition of which is, 25%, 35%, 45%, 55%, 65% and 75% pineapple leaf fibers mixed with 75%, 65%, 55% , 45%, 35% and 25% of the recycle newspapers. The mixtures have been tested for mechanical properties and thickness by using the Universal Testing Machine (UTM) and micrometers. The results from tensile and tearing tests were then compared with data obtained from previous experiments. Through the observation of the experiment, it was found that the data obtained with similar experiments conducted previously. The results have been proved in tears testing and stress testing. Tearing test data shows that the longer the beating time imposed on the mixture, the lower the tearing force required to tear the paper samples. On the other hand, the tensile test results shows, the longer time beating the bear on the mix, the higher the tensile force should be imposed on the sample. The experimental results can help in the formulation of the pineapple leaf fiber-based paper production in accordance to the usage.

Properties investigation of 3D printed continuous pineapple leaf fiber-reinforced PLA composite

2020 ◽  
pp. 089270572094537
Author(s):  
Jaya Suteja ◽  
Hudiyo Firmanto ◽  
Arum Soesanti ◽  
Christian Christian
Keyword(s):  
Tensile Strength ◽  
Fused Deposition Modeling ◽  
Fiber Reinforced ◽  
Composite Part ◽  
Dimensional Error ◽  
Fused Deposition ◽  
Pineapple Leaf Fiber ◽  
Deposition Modeling ◽  
3D Printed ◽  
Leaf Fiber

Previous researchers tried to improve the mechanical properties of 3D printed part by adding short or continuous, natural, or nonnatural fibers as the reinforcement for thermosetting or thermoplastic matrix. None of the research found in the literature incorporates continuous natural pineapple leaf fiber as the reinforcement for polylactic acid (PLA) matrix by using 3D printing. The objective of this research is to investigate the tensile strength, the elongation, and the dimensional error of the 3D printed parts made of continuous pineapple leaf fiber-reinforced PLA composite using different values of extrusion temperature and feed rate. The experiment involves 32 factorial design with two replications and, therefore, prints 18 tensile test specimens according to ASTM D638. Based on the result of the experiment, it can be concluded that the use of continuous pineapple leaf fiber as the reinforcement for the PLA matrix increases the tensile strength of the composite. The use of continuous pineapple leaf fiber does not increase the dimensional error value of the composite part beyond the maximum value of the common fused deposition modeling printed part. Moreover, the required time to print the composite part is the same as the required time to print the pure PLA part. However, the elongation of the composite part is lower than the pure PLA part.

Modelling and Optimization of the Manufacturing Parameters of a Hybrid Fiber Reinforced Polymer Composite PxGyEz

2021 ◽  
Author(s):  
Bassey Okon Samuel ◽  
Malachy Sumaila ◽  
Bashar Dan-Asabe
Keyword(s):  
Tensile Strength ◽  
Glass Fiber ◽  
Tensile Properties ◽  
Fiber Length ◽  
Volume Fraction ◽  
Strength Analysis ◽  
Sem Images ◽  
Pineapple Leaf Fiber ◽  
Control Factors ◽  
Leaf Fiber

Abstract In this study, a Pineapple Leaf fiber (PALF)/Glass fiber Epoxy hybrid composite PxGyEz (with x, y, and z representing the volume fraction of pineapple leaf fiber (P), volume fraction of glass fiber (G) and fiber length respectively in Epoxy (E) matrix) was developed and its tensile properties modelled and optimized with regards to the variable parameters of x, y, and z respectively. For the quality characteristics (high tensile strength) investigated, the Minitab®19 software was used to analyze the Taguchi robust experiment design technique on the higher the better basis. The optimum combination of the control factors was found at x=10%, y=20% and z = 15mm. The optimized composite P10G20E15 possessed a tensile strength of 95.3144MPa which was only a 5.9% deviation from the predicted optimum tensile strength. Analysis of variance showed that the glass fiber had the highest contribution of 50.64% to the tensile strength of PxGyEz, PALF 15.53% and fiber length 28.84%. SEM Images of the PALF, glass fiber and fractured surface of the optimized material P10G20E15 revealed the surface structure which explained their different contribution to the tensile strength of the materials. An equation for the prediction of the tensile properties of PxGyEz was derived from the regression model.

Structure and Characteristics of Pineapple Leaf Fibers Obtained from Pineapple Leaves

2014 ◽  
Vol 998-999 ◽  
pp. 316-319 ◽  
Author(s):  
Chao Hong Dong ◽  
Zhou Lv ◽  
Liang Zhang ◽  
Hong Jie Shen ◽  
Na Na Li ◽  
...  
Keyword(s):  
Structural Characteristics ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
Essential Information ◽  
X Ray ◽  
High Fiber ◽  
Pineapple Leaf Fiber ◽  
Yarn Quality ◽  
Pineapple Leaves ◽  
Leaf Fiber

Pineapple leaf fiber is a nature hemp leaf fiber extracted from pineapple leaves. Its structural characteristics was investigated by means of scanning electron microscope (SEM), X-ray diffraction (XRD), Differential scanning calorimetry (DSC) and thermogravimetric analysis (TG). The results showed that the percent crystallinity and preferred orientation of crystallites in pineapple fibers were 60.82% and 98.5%, respectively. The average fracture strength of the pineapple leaf fiber is high and the linear density is low, so there is a high fiber spinnability and yarn quality. The present study is expected to provide essential information for the preparation and processing of pineapple leaf fibers.

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