Effect of γ (gamma)-radiation on mechanical properties of raw and polyethylene glycol-modified bleached jute reinforced polyester composite

2017 ◽  
Vol 14 (2) ◽  
pp. 108-113 ◽  
Author(s):  
Md. Asadul Hoque ◽  
Md. Anwarul Kabir Bhuiya ◽  
Md. Saiduzzaman ◽  
Md. Ashadul Islam ◽  
Mubarak A. Khan
Keyword(s):  
Mechanical Properties ◽  
Polyethylene Glycol ◽  
Radiation Dose ◽  
Gamma Radiation ◽  
Natural Fiber ◽  
Lignin Content ◽  
Physical And Mechanical Properties ◽  
Content Type ◽  
Polyester Composite ◽  
Jute Fabrics

Purpose This paper aim to comparatively study of mechanical properties of gamma radiation treated raw and polyethylene glycol modified bleached jute reinforced polyester composite. The natural fiber-reinforced composite has been a wide area of research, and it is the preferred choice due to its superior physical and mechanical properties like low density, stiffness and light weight. Among several natural fibers, jute is one that has good potential as reinforcement in polymer composite. Jute fibers biodegradability, low cost and moderate mechanical properties make it as a preferable reinforcement material in the development of polymer matrix composites. Design/methodology/approach In the present work, raw jute fabrics-reinforced polyester composite (as RJPC) and polyethylene glycol (PEG)-modified bleached jute fabrics-reinforced polyester composite (as MBJPC) were fabricated by the heat-press molding technique at 120°C for 5 min at a pressure of 5 tons. Prior to the composite formulation, low lignin content bleached jute fabrics were chemically modified with PEG for the better compatibility of the fabrics with the polyester matrix and enhancing elongation properties. All the composites irradiated with different gamma radiation dose in the range of 2 to 14 kGy. Findings The irradiated composites showed highest improved of mechanical properties at the 10 kGy γ-radiation dose. However, the hard and sunlight-sensitive high lignin content γ-RJPC showed higher mechanical properties except elongation properties compared to that of low lignin content γ-MBJPC. Originality/value After the γ-ray irradiation, both the γ-RJPC and γ-MBJPC developed high degree of cross-linking among the polyester molecules and thereto fabrics with the consequence of significant changed of surface morphology as observed by atomic force microscopy.

Environmental Durability of Natural Fiber Reinforced Unsaturated Polyester Composite

2013 ◽  
Author(s):  
Mengyuan Liao ◽  
Umaru Semo Ishiaku ◽  
Zainal Arifin Mohd Ishak ◽  
Guijun Xian ◽  
Hiroyuki Hamada
Keyword(s):  
Mechanical Properties ◽  
Environmental Degradation ◽  
Natural Fiber ◽  
Unsaturated Polyester ◽  
Physical And Mechanical Properties ◽  
Vacuum Oven ◽  
Polyester Composite ◽  
Environmental Durability ◽  
Natural Climate ◽  
Automotive Interior

With an industrial increasing interest in sustainable, eco-efficient and green material’s application, natural fiber in polymer composite is guided to develop rapidly, especially kenaf nonwovens in making automotive interior trim parts with its comparative excellent strength and renewability. The objectives of this research are to investigate the environmental degradation behavior on the physical and mechanical properties of kenaf/unsaturated polyester nonwoven composites (KUNC) with special reference to the influence of different geographic natural climate ageing conditions. KUNC was prepared with needle-punched kenaf’s impregnation into unsaturated polyester resin assisted with vacuum oven following by hand lay-up molding. Natural environmental degradation was performed on KUNC by exposing the specimens to Kyoto(Japan), Shanghai(China) and Harbin(China) for a period of 3 months. Weight change and mechanical properties of degraded KUNCs in former three geographic positions in terms of tensile, flexural, impact and fracture toughness were measured instrumentally for ageing effect discussion and comparison. As expected, the aged specimens in those different positions all showed the dropped mechanical properties with weight increasing in varying degrees. Furthermore, the result of degradation level comparison among different positions revealed the positive correlation between increased weight percentages and dropped mechanical properties. In other words, dropped mechanical properties of the degraded composites with increasing weight were attributed to the effect of water, which deteriorates the interfacial properties of composites.

Study on properties of decolorizing yakwool fiber and spun yarn

2019 ◽  
Vol 31 (1) ◽  
pp. 90-102
Author(s):  
Qin Xiaoxuan ◽  
Hui’e Liang ◽  
Xuzhong Su ◽  
Xinjin Liu
Keyword(s):  
Mechanical Properties ◽  
Design Methodology ◽  
Natural Fiber ◽  
Physical And Mechanical Properties ◽  
Optimal Process ◽  
Textile Processing ◽  
Content Type ◽  
Oxidation Reduction ◽  
Spun Yarn

Purpose As a natural fiber, yakwool has attracted much attention in textile processing due to its excellent properties and wearabilities. However, the main colors of yakwool are black and brown. Therefore, for extending the application scopes of the fiber, the decolorization of the yakwool fiber is usually needed, especially for the black fiber. The paper aims to discuss this issue. Design/methodology/approach In the paper, the properties of the yakwool fiber were tested first, especially the melanin granules in the fiber. Then, the decolorization of the yakwool fiber was studied using the oxidation–reduction decolorization method, and corresponding optimal process of the decolorization was given. Then, the properties of the decolorized yakwool fiber were tested and compared with those of the original fiber. Findings It is shown that, after decolorization, the physical and mechanical properties of the fiber were deteriorated, especially in terms of the strength and elongation. Therefore, the fiber became shorter and thinner, and the scales were damaged. When compared with the yarn spun from the original yakwool fiber, it was observed that the properties of the yarn spun from the decolorized yakwool fiber deteriorated because of the deterioration in the properties of the original fiber. Originality/value In the paper, for extending the application scopes of the yakwool fiber, the decolorization of the yakwool fiber was studied.

Mechanical Property Studies on Flax Fiber Reinforced Basalt Powder Filled Polyester Composite

2020 ◽  
Vol 13 ◽  
Author(s):  
V. Arumugaprabu ◽  
K.Arun Prasath ◽  
S. Mangaleswaran ◽  
M. Manikanda Raja ◽  
R. Jegan
Keyword(s):  
Mechanical Properties ◽  
Mechanical Property ◽  
Natural Fiber ◽  
Tensile Load ◽  
Flax Fiber ◽  
Flexural Properties ◽  
Weight Percentage ◽  
Tensile Impact ◽  
Polyester Composite ◽  
Additional Support

: The objective of this research is to evaluate the tensile, impact and flexural properties of flax fiber and basalt powder filled polyester composite. Flax fiber is one of the predominant reinforcement natural fiber which possess good mechanical properties and addition of basalt powder as a filler provides additional support to the composite. The Composites are prepared using flax fiber arranged in 10 layers with varying weight percentage of the basalt powder as 5 wt.%, 10 wt.%, 15 wt.%, 20 wt.%, 25 wt.% and 30 wt.% respectively. From the results it is inferred that the composite combination 10 Layers of flax / 5 wt.%, basalt Powder absorbs more tensile load of 145 MPa. Also, for the same combination maximum flexural strength is about 60 MPa. Interestingly in the case of impact strength more energy was absorbed by 10 layers of flax and 30 wt.% of basalt powder. In addition, the failure mechanism of the composites also discussed briefly using SEM studies.

scholarly journals Effect of Fungal Deterioration on Physical and Mechanical Properties of Hemp and Flax Natural Fiber Composites

Materials ◽  
2017 ◽  
Vol 10 (11) ◽  
pp. 1252 ◽  
Author(s):  
Bryn Crawford ◽  
Sepideh Pakpour ◽  
Negin Kazemian ◽  
John Klironomos ◽  
Karen Stoeffler ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Natural Fiber ◽  
Physical And Mechanical Properties ◽  
Fiber Composites ◽  
Natural Fiber Composites ◽  
Fungal Deterioration

scholarly journals Synthesis and research of photocurable protective coatings on the basis of olygoesteracrylates

2020 ◽  
Vol 7 (4) ◽  
pp. 229-232
Author(s):  
O. A. Karsakova ◽  
M. V. Kuzmin
Keyword(s):  
Mechanical Properties ◽  
Polyethylene Glycol ◽  
Methacrylic Acid ◽  
Protective Coatings ◽  
Physical And Mechanical Properties ◽  
Triethylene Glycol ◽  
Glycol Dimethacrylate ◽  
Triethylene Glycol Dimethacrylate ◽  
Rotary Viscometer ◽  
Acid Esters

In this work, photocurable protective coatings based on methacrylic acid esters have been developed and their physical and mechanical properties have been investigated. The photocurable compositions were obtained by mixing at different ratios the following methacrylic acid esters: polyethylene glycol dimethacrylate 400 and triethylene glycol dimethacrylate ether, polyethylene glycol dimethacrylate 400 and oligourethane dimethacrylate, polyethylene glycol dimethacrylate 400 and pentaerythritol tetraacrylate. For the obtained compositions, the viscosity was studied using a Brookfield rotary viscometer. To initiate polymerization, a mixture of initiators was used: benzoyl peroxide and benzoin. Curing of the obtained compositions was carried out under the influence of UV rays for 2-5 minutes. For photo-cured compositions, their physical and mechanical properties have been studied. It was found that the composition based on polyethylene glycol dimethacrylate modified with triethylene glycol dimethacrylate at a ratio of 70:30 has the highest strength.

scholarly journals Mechanical properties of kenaf fibrous pulverized fuel ash concrete

2018 ◽  
Vol 250 ◽  
pp. 05007
Author(s):  
Norazura Mizal Azzmi ◽  
Jamaludin Mohamad Yatim ◽  
Hazlan Abdul Hamid ◽  
Azmahani Abdul Aziz ◽  
Adole Michael Adole
Keyword(s):  
Mechanical Properties ◽  
Natural Fiber ◽  
Coal Ash ◽  
Physical And Mechanical Properties ◽  
Short Fiber ◽  
Pozzolanic Reaction ◽  
Strength Development ◽  
Kenaf Fiber ◽  
Fuel Ash ◽  
Pulverized Fuel

The main objective of the experimental work is to identify the mechanical properties of Kenaf Fiber incorporate with Ordinary Portland Cement (OPC) and Pulverised Fuel Ash (PFA) in the mix proportions of concrete. Kenaf Fibrous Concrete (KFC) and Kenaf Fibrous Pulverised Fuel Ash Concrete (KFPC) will be measured on physical and mechanical properties in order to investigate the suitability of this natural fiber as a composite material. A comparison of properties between these two composites will determine the density, workability, compressive, tensile, and flexural strength of the concrete. Eight different mixes with varying percentage of Kenaf fiber were prepared with 30N/mm2 strength at 28days ,56 days and 90 days. Short fiber with 25mm and 50mm length were randomly distribute in composite to enhance the tensile and durability. PFA was obtained by the process of burning in the Power Station Coal Ash at Tanjung Bin, Johor. The unburning powder from the process is called as a PFA generally suitable for cement replacement in the concrete mix. The pozzolanic reaction will improve the adhesion of cement gel, hence increased the properties of concrete in a long-term strength development. The result shows that the inclusion of Kenaf fiber improve tensile strength of composite, furthermore the 25% PFA mix increase the durability of concrete.

scholarly journals Mechanical properties of coconut trunk particle/polyester composite based on alkali treatment

2020 ◽  
Vol 29 ◽  
pp. 2633366X2093589
Author(s):  
Van-Tho Hoang ◽  
Thanh-Nhut Pham ◽  
Young-Jin Yum
Keyword(s):  
Mechanical Properties ◽  
Surface Modification ◽  
Polyester Resin ◽  
Natural Fiber ◽  
Alkali Treatment ◽  
Unsaturated Polyester ◽  
Test Results ◽  
Coconut Tree ◽  
Lignocellulosic Fiber ◽  
Polyester Composite

Coir is a well-known natural fiber extracted from the husk of a coconut tree. In polymer composite materials, the ultimate performance of coir has been shown using surface modification methods. Among them, sodium hydroxide (NaOH) is a comparative and efficient solution used for surface treatment of lignocellulosic fiber. In contrast to coir, coconut timber, a hardwood that dominates the weight of the coconut tree, has not been appropriately considered for use in polymer composites. Therefore, in this article, coconut trunk particle/unsaturated polyester resin composites were experimentally investigated. As a pioneering study, a large range of NaOH concentrations from 2 wt% to 10 wt% (with an interval of 2 wt%) was utilized to treat the surface of the filler. Finally, 4 wt% alkali solution was found as the best content for surface modification based on the mechanical properties of the composite, including those determined by tensile, flexural, and impact test results.

Short Review: Potential Production of Acacia Wood and its Biocomposites

2018 ◽  
Vol 917 ◽  
pp. 37-41 ◽  
Author(s):  
Muhammad Khusairy bin Bakri ◽  
Elammaran Jayamani ◽  
Soon Kok Heng ◽  
Akshay Kakar
Keyword(s):  
Mechanical Properties ◽  
Lactic Acid ◽  
Review Paper ◽  
Natural Fiber ◽  
Physical And Mechanical Properties ◽  
Short Review ◽  
Fiber Composites ◽  
Poly Lactic Acid ◽  
Hybrid Polymer ◽  
Potential Production

In this short review paper, the physical and mechanical properties of acacia wood, poly lactic acid (PLA) and polyhydroxyalkanoates (PHA) were analyzed. Existing factors that affect the mechanical properties of natural fiber composites were investigated and identified. By knowing these factors, a possibility and potentiality in implementing the natural acacia wood reinforced material with hybrid polymer were discussed. It was found that the acacia wood had the potential to re-condition soil and have the potential to become reinforced materials in hybrid polymer composites. In addition, using fully biodegradable polymer such as PLA and PHA made it sustainable and environmentally friendly.

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