Effect of using different chemically modified breadfruit peel fiber in the reinforcement of LDPE composite

2021 ◽  
Vol 63 (3) ◽  
pp. 286-292
Author(s):  
Rabboni Mike Government ◽  
Edozie Thompson Okeke ◽  
Azeez Taofik Oladimeji ◽  
Amechi Kingsley Ani ◽  
Okechukwu Dominic Onukwuli ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Sodium Hydroxide ◽  
Tensile Modulus ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Polyethylene Matrix ◽  
Polyethylene Composite ◽  
Chemically Modified ◽  
Alternative Material ◽  
Acetic Acid Treatment

Abstract This paper was based on the application of novel breadfruit peel fiber (BFPF), a cheap agro-waste as reinforcer in low-density polyethylene matrix (LDPE) to produce breadfruit peel fiber-low-density-polyethylene composite (BFPF-LDPE) for industrial production. To achieve this, the influence of BFPF weight at different treatment routes on the mechanical properties and water absorption resistance of LDPE was examined. The BFPF was modified with sodium hydroxide (MS), sodium hydroxide/acetic acid (AM) and sodium hydroxide/acetic acid/maleated polyethylene (MM). The results showed that the treatment of BFPF with sodium hydroxide/acetic acid/maleated polyethylene gave better properties than composites produced with either sodium hydroxide or combination of sodium hydroxide/ acetic acid treatment, while untreated (UM) composite provided the poorest. This is a result of anhydride radical in MM which is absent in AM and MS. However, the tensile and impact strength for the crude LDPE indicated higher values than UM, MS, AM and MM of BFPF-LDPE composite, respectively. Furthermore, the tensile modulus, flexural strength and hardness of BFPF-LDPE composite after inclusion of UM, MS, AM and MM showed immense improvement as compared to the raw LDPE. The modified BFPF enhanced sorption resistance of the BFPF-LDPE composite. Therefore, the BFPF-LDPE composite of MM can be applied as an alternative material for the replacement of particle board in construction and automobile parts.

scholarly journals Performance of Straw/Linear Low Density Polyethylene Composite Prepared with Film-Roll Hot Pressing

Polymers ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 860
Author(s):  
Lei Zhang ◽  
Huicheng Xu ◽  
Weihong Wang
Keyword(s):  
Hot Pressing ◽  
Flexural Modulus ◽  
Tensile Modulus ◽  
Thermoplastic Composites ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Linear Low Density Polyethylene ◽  
Scanning Calorimetry ◽  
Polyethylene Composite ◽  
Extrusion Method

Thermoplastic composites are usually prepared with the extrusion method, and straw reinforcement material must be processed to fiber or powder. In this study, film-roll hot pressing was developed to reinforce linear low density polyethylene (LLDPE) with long continuous straw stems. The long straw stems were wrapped with LLDPE film and then hot pressed and cooled to prepare straw/LLDPE composite. Extruded straw fiber/LLDPE composite was prepared as a control. The mechanical properties of these LLDPE-based composites were evaluated. The hot pressed straw/LLDPE composite provided higher tensile strength, tensile modulus, flexural strength, flexural modulus, and impact strength than the traditional extruded straw/LLDPE composite, by 335%, 107%, 68%, 57%, and 181%, respectively, reaching 35.1 MPa, 2.65 GPa, 3.8 MPa, 2.15 GPa, and 25.1 KJ/m2. The density of the hot pressed straw/LLDPE composite (0.83 g/cm3) was lower than that of the extruded straw/LLDPE composite (1.31 g/cm3), and the former had a higher ratio of strength-to-weight. Scanning electron microscopy indicated that the orientation of the straws in the composite was better with the new method. Differential scanning calorimetry tests revealed that in hot pressed straw/LLDPE composite, straw fibers have a greater resistance to the melting of LLDPE than extruded composite. Rotary rheometer tests showed that the storage modulus of the hot pressed straw/LLDPE was less affected by frequency than that of the extruded composite, and the better elastic characteristics were pronounced at 150 °C. The hot pressed straw/LLDPE composite absorbed more water than the extruded composite and showed a potential ability to regulate the surrounding relative humidity. Our results showed that straw from renewable sources can be used to produce composites with good performance.

Impact of hybrid nanosilica and nanoclay on the properties of palm rachis-reinforced recycled linear low-density polyethylene composites

2020 ◽  
pp. 089270572094421
Author(s):  
Wagih Abdel Alim Sadik ◽  
Abdel Ghaffar Maghraby El Demerdash ◽  
Rafik Abbas ◽  
Alaa Bedir
Keyword(s):  
Tensile Modulus ◽  
Stress Transfer ◽  
Microscopy Study ◽  
Hybrid Nanoparticles ◽  
Morphological Properties ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Linear Low Density Polyethylene ◽  
Plastic Composite ◽  
Blending Method

The main goal of this work was to assess the technical feasibility of palm rachis (PR) as a reinforcing agent in the production of wood–plastic composites. Recycled linear low-density polyethylene/PR fiber composites were prepared at constant content (3 phc (per hundred compounds)) of maleic anhydride-grafted polyethylene as compatibilizer by melt blending method utilizing a two-roll mill and compression molding. The effect of nanosilica (NS), nanoclay (NC), and hybrid nanoparticles (NSNC) at different concentrations (2, 4, and 6 phc) on mechanical, physical, thermal, and morphological properties was investigated. The results of mechanical properties measurements demonstrated that when 6 phc NS, 4 phc NC, and 4 phc NSNC were added, tensile, modulus strength, and hardness reached their optimum values. At a high level of NC loading (6 phc), the increased populace of NC layers led to agglomeration and stress transfer gets restricted. Elongation at break and Izod impact strength were decreased by the incorporation of different nanoparticles. Water absorption and thickness swelling of prepared composites were found to decrease on the incorporation of NS and NC. In addition, the thermal stability showed slightly improved by the addition of nanoparticles, but there are no perceptible changes in the values of melting temperature by increasing the content of NS and NC or NSNC. Scanning electron microscopy study approved the good interaction of the PR fibers with the polymer matrix as well as the effectiveness of NS and NC in the improvement of the interaction. The finding indicated that wood–plastic composite treated by NS had the highest properties than other composites.

Recycled low-density polyethylene composite to mitigate the environmental impacts generated from coal mining waste in Brazil

2020 ◽  
Vol 260 ◽  
pp. 110149 ◽  
Author(s):  
Marcelo Gryczak ◽  
Janine WY. Wong ◽  
Christina Thiemann ◽  
Benoit J.D. Ferrari ◽  
Inge Werner ◽  
...  
Keyword(s):  
Coal Mining ◽  
Environmental Impacts ◽  
Mining Waste ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Polyethylene Composite ◽  
Recycled Low Density Polyethylene

scholarly journals Polyethylene-Matrix Composites with Halloysite Nanotubes with Enhanced Physical/Thermal Properties

Polymers ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 787 ◽  
Author(s):  
Janusz W. Sikora ◽  
Ivan Gajdoš ◽  
Andrzej Puszka
Keyword(s):  
Impact Strength ◽  
Flow Rate ◽  
Softening Temperature ◽  
Halloysite Nanotubes ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Melt Flow ◽  
Polyethylene Matrix ◽  
Melt Flow Rate ◽  
Heat Deflection Temperature

The aim of the present work is to investigate the effect of halloysite nanotubes (HNT) on the mechanical properties of low-density polyethylene composites modified by maleic anhydride-grafted PE (PE-graft-MA). Polyethylene nanocomposites were prepared using an injection molding machine, Arburg Allrounder 320 C 500–170; the HNT content was varied at 0 wt %, 2 wt %, 4 wt % and 6 wt %, and the PE-graft-MA content was varied at 5 wt %. The composites were examined for their ultimate tensile stress, strain at ultimate stress, hardness, impact strength, melt flow rate, heat deflection temperature, Vicat softening temperature, crystallinity degree and phase transition temperature. It was found that the addition of halloysite nanotubes to low-density polyethylene (LDPE) led to an increased heat deflection temperature (HDT, up to 47 °C) and ultimate tensile strength (up to 16.00 MPa) while the Vicat softening temperature, strain at ultimate stress, impact strength and hardness of examined specimens slightly decreased. Processing properties of the materials specified by the melt flow rate (MFR) deteriorated almost twice. The results have demonstrated that the nanoparticles can reinforce enhance LDPE at low filler content without any considerable loss of its ductility, but only when halloysite nanotubes are superbly distributed in the polyethylene matrix.

The Properties of Linear Low Density Polyethylene/Cyperus Odoratus (LLDPE/CY) Blends: Effect of Sodium Hydroxide

2015 ◽  
Vol 815 ◽  
pp. 69-73 ◽  
Author(s):  
Nik Ahmad Faris Nik Abdullah ◽  
Nik Noriman Zulkepli ◽  
Sam Sung Ting ◽  
Mohd Mustafa Al Bakri Abdullah ◽  
Kamarudin Hussin ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Sodium Hydroxide ◽  
Young’S Modulus ◽  
Young's Modulus ◽  
Natural Fibers ◽  
Biodegradable Plastics ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Linear Low Density Polyethylene ◽  
Naoh Solution

The purpose of this study was to determine the effect of treated Cyperus Odoratus (CY) with sodium hydroxide (NaOH) on the properties of biodegradable plastics made from linear low density polyethylene (LLDPE)/CY blends. Alkali treatments for natural fibers can increased adhesion between the hydrophilic fibers and hydrophobic matric. After CY was treated with 5% NaOH solution, it can be seen that the tensile strength and Young’s modulus of the LLDPE/CY blends significantly increased. Therefore, alkali treatments can be considered in modifying the properties of natural fibers.

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