scholarly journals Evaluation of Mechanical Properties of Silk Fiber Reinforced Biodegradable Plastic Composites (Part 2, Analytical Prediction for Stress-Strain Relationships of Silk/PBS Laminates)

2011 ◽  
Vol 77 (784) ◽  
pp. 2118-2127
Author(s):  
Taito IZAKI ◽  
Hayato NAKATANI ◽  
TRAN Huu Nam ◽  
Dong Yeul SONG ◽  
Kei YOSHII ◽  
...  
2010 ◽  
Vol 2010.18 (0) ◽  
pp. _517-1_-_517-3_
Author(s):  
Taito IZAKI ◽  
Shinji OGIHARA ◽  
Tran-Huu Nam ◽  
DongYeul SONG ◽  
Kei YOSHII

2016 ◽  
Vol 47 (5) ◽  
pp. 602-621 ◽  
Author(s):  
Rajkumar Govindaraju ◽  
Srinivasan Jagannathan

In this study, the compression molding process parameters for the development of silk fiber-reinforced polypropylene composites was optimized using Box–Behnken experimental Design with response surface methodology. The trimmed silk fibers from shuttleless loom silk selvedge waste were used as reinforcement in polypropylene fiber matrix. The process parameters of compression molding such as temperature (165–185℃), time (7–15 min) and pressure (35–45 bar) were optimized with respect to the mechanical properties of the silk fiber-reinforced polypropylene composite. The optimum parameters for better mechanical properties were found to be temperature, 180℃; time, 7 min, and pressure, 35 bar in compression molding. The optimised level of parameters has shown good response to the predicted model.


Polymers ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1200
Author(s):  
Mokgaotsa J. Mochane ◽  
Sifiso I. Magagula ◽  
Jeremia S. Sefadi ◽  
Teboho C. Mokhena

The need for utilization of environmentally friendly materials has emerged due to environmental pollution that is caused by non-biodegradable materials. The usage of non-biodegradable plastics has increased in the past decades in many industries, and, as a result, the generation of non-biodegradable plastic wastes has also increased. To solve the problem of non-biodegradable plastic wastes, there is need for fabrication of bio-based polymers to replace petroleum-based polymers and provide strategic plans to reduce the production cost of bioplastics. One of the emerging bioplastics in the market is poly (butylene succinate) (PBS) and it has been the biopolymer of choice due to its biodegradability and environmental friendliness. However, there are some disadvantages associated with PBS such as high cost, low gas barrier properties, and softness. To lower the cost of PBS and enhance its properties, natural lignocellulosic fibers are incorporated into the PBS matrix, to form environmentally friendly composites. Natural fiber-based biocomposites have emerged as materials of interest in important industries such as packaging, automobile, and construction. The bonding between the PBS and natural fibers is weak, which is a major problem for advanced applications of this system. As a result, this review paper discusses various methods that are employed for surface modification of the Fibers The paper provides an in-depth discussion on the preparation, modification, and morphology of the natural fiber-reinforced polybutylene succinate biocomposites. Furthermore, because the preparation as well as the modification of the fiber-reinforced biocomposites have an influence on the mechanical properties of the biocomposites, mechanical properties of the biocomposites are also discussed. The applications of the natural fiber/PBS biocomposites for different systems are also reported.


2010 ◽  
Vol 2010 ◽  
pp. 1-8 ◽  
Author(s):  
Yoo-Jae Kim ◽  
Jiong Hu ◽  
Soon-Jae Lee ◽  
Byung-Hee You

Fiber reinforced aerated lightweight concrete (FALC) was developed to reduce concrete's density and to improve its fire resistance, thermal conductivity, and energy absorption. Compression tests were performed to determine basic properties of FALC. The primary independent variables were the types and volume fraction of fibers, and the amount of air in the concrete. Polypropylene and carbon fibers were investigated at 0, 1, 2, 3, and 4% volume ratios. The lightweight aggregate used was made of expanded clay. A self-compaction agent was used to reduce the water-cement ratio and keep good workability. A surfactant was also added to introduce air into the concrete. This study provides basic information regarding the mechanical properties of FALC and compares FALC with fiber reinforced lightweight concrete. The properties investigated include the unit weight, uniaxial compressive strength, modulus of elasticity, and toughness index. Based on the properties, a stress-strain prediction model was proposed. It was demonstrated that the proposed model accurately predicts the stress-strain behavior of FALC.


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