Papers by Keyword: Ramie Fiber

Abstract: This study investigates the comparative flexural performance of concrete reinforced with three distinct types of natural fibers: abaca, banana, and ramie. Concrete specimens were prepared with varying fiber contents (0%, 0.25%, 0.50%, 0.75%, and 1.00%) for each fiber type, and their slump and flexural strength were evaluated. The slump test results revealed a consistent reduction in the workability of concrete as the fiber content increased, indicating the need for optimizing the fiber content to balance the enhanced mechanical properties with the workability requirements. The flexural strength test results showed that the incorporation of abaca and banana fibers at an optimal content of 0.5% significantly improved the flexural strength of the concrete, with increases of 59% and 50%, respectively, compared to the control mix without fibers. The ramie fiber-reinforced concrete exhibited a relatively lower enhancement in flexural strength compared to the abaca and banana fiber-reinforced mixes, though its performance remained comparable to the control. Further analysis using ANOVA confirmed the statistical significance of the fiber content on the flexural strength for abaca and banana fibers, underscoring their efficacy in enhancing the concrete's load-bearing capacity.

Abstract: Ramie fibers as a natural fiber are frequently utilized in fiber-reinforced polypropylene composite preparation due to their remarkable mechanical properties, renewable, and sustainable materials. This research investigated the effect of ramie fiber addition at various compositions on the tensile and impact properties of ramie fiber-reinforced waste polypropylene composites (RFRWPC). Furthermore, a comparative analysis was conducted to assess the potential of ramie fiber as a green reinforcement. In this research, ramie fiber was treated in a 10% NaOH solution at 100 °C for two hours. The treated ramie fiber with a volume fraction of 5, 10, and 15% was blended with waste polypropylene using an extruder at 180 °C to produce an RFRWPC pellet. The pellet obtained was used to prepare tensile and impact tests through an injection molding machine at 195 °C. The tensile and impact properties of RFRWPC were measured according to ASTM D638 and ASTM D256, respectively. The results showed that the polypropylene composite reinforced with 10% ramie fiber has a tensile strength 4.61% higher than glass fiber reinforced waste polypropylene composite (GFRWPC). RFRWPC with equivalent reinforcement percentages to commercial GFRWPC have nearly identical impact strength. The research findings demonstrated the excellent potential of ramie fiber as a green reinforcement as a substitute for glass fiber in enhancing the mechanical properties of polypropylene composites.

Abstract: Environmental advantages and remarkable performance can be achieved by using ramie fibers, which demonstrates the enormous potential in fiber reinforced composites. A study was conducted to investigate the effects of chemical treatment on water absorption, thickness swelling, and hardness behavior of polyester/ramie composites. Natural fibers that were not treated or treated were prepared in unidirectional orientation, and the vacuum infusion technique was used to manufacture the composites. Comparing composites treated with both oxalic acid and alkali to untreated ramie fibers, the composites resistance to water absorption was increased by 94.68%. The evaluation of thickness swelling also revealed that the combination treatment exhibited the lowest percentage of dimension expansion. The thickness swelling of the polyester/ramie composite was reduced by 32.58% as a result of the ramie fibers being immersed in subsequent alkali and oxalic acid solutions. The findings of the Shore D Hardness test showed that after the samples were soaked for 312 hours, there was a decrease in hardness, where the smallest found in the treated samples.

Abstract: The current technological need is the use of eco-friendly and biodegradable composites. It seeks to increase the use of natural resources to engineer composite materials to be better than before. This study aims to analyze the effect of ramie fiber orientation for ramie composites (in this study 45⁰ and 0⁰) on tensile strength and impact strength and find the best orientation angle with higher power and impact value than the other fiber angles on ramie composite. The fiber used in this study was ramie fiber, and the matrix used was Yukalac 157 BQTN-EX polyester resin. This research method uses the experimental process of conducting experiments and testing. The results showed that the 0⁰ angle direction composite achieved the highest average tensile strength value of 54.3 N/mm², and the impact strength showed the highest average impact strength value of 0.0168 J/mm², performed by the 0⁰ composites.

Abstract: The primary purpose of the structural study on the 4.2-meter-long Jaloe Kayoh boat is to analyze the FEA of E-glass and ramie fiber composites, as well as the polyester resin. The hand lay-up method was used in this study to manufacture specimens following the ASTM D638-02 standard, while the tensile test was performed under the ASTM D790-02 standard. Based on the simulation results, the data analysis method was used to visualize the relationship between the stress and strain strength parameters on the structure, as well as a reaction force and displacement, which were related to the centralized loading on the walls and hull of the Jaloe Kayoh boat with a minimum loading variation of 539.3 N and a maximum loading variation of 2157.4 N. The maximum loading of the stress strength on the hull wall of Jaloe Kayoh was obtained at a load of 220 kg or 2157.4 N. The stress values obtained were 4.212e+09 N/mm2 for E-glass fiber and 3.998e+09 N/mm2 for ramie fiber. The highest Reaction Force values obtained were 4.369e+03 N for E-glass and 4.952e+03 N for ramie fiber. The highest displacement value was obtained, which was 2.620e-02 m for E-glass fiber and 2.662e-02 m for ramie fiber. Based on the simulation results, E-glass and ramie fibers are still safe and feasible to use as a base or initial layer, or one of the supporting layers, for lamination on one of the materials for the Jaloe Kayoh boat's walls and hull.

Abstract: The present study investigates the structural, crystallinity index, crystallite size, morphological, and the dimension of Nanocrystalline Cellulose (NCC) extracted from ramie fiber by hydrochloric acid-hydrolysis. NCC was chosen because it has high strength and modulus compared to other natural materials. Ramie fiber was chosen because it has high cellulose content and abundant in Indonesia. The other reason is ramie has a high crystallinity index compared to other natural fibers. The extraction process was carried out into two steps: cellulose purification then followed by hydrochloric acid hydrolysis. The characterizations of extracted NCCs were conducted through Fourier-Transform Infrared spectroscopy (FTIR), X-ray diffraction (XRD), Transmission Electron Microscopy (TEM), and Particle Size Analyzer (PSA). The focus of this research was to study the effect of acid concentration on the characteristics of extracted NCCs. The results show that NCCs could be extracted through hydrolysis using hydrochloric acid. Morphological analysis by TEM shows the formation of rod-like shaped NCCs. Hydrolysis by hydrochloric acid does not affect the chemical compound of cellulose. It was found that during hydrolysis, the higher acid concentration being employed had resulted in smaller dimension of NCCs and decreasing crystallinity index.

Abstract: With the “ecological consciousness” awakening of people, the natural fibers are very popular owing to their advantages such as environmental protection, low cost, easy to get and low density, and are used widely in the research and development about medical products. So, using natural fibers to make medical splint will also become a research hotspot. This paper introduces the research status of the medical splint and the characteristics of ramie fiber composite materials, and put forward the viewpoint of using ramie fiber composite materials to make medical splint and making it be intelligent. It has significance meaning for the further research of the intelligent splint for medicine on ramie fiber composite material.

Abstract: form and Art Empathy of the Ramie Materials in Modern Fiber ArtLi Mingjuan,FangZhi Road, Wuhan City, Hubei Province, China, Art and Design College of Wuhan Textile University78207664@QQ.comKeywords: Modern fiber art, Ramie fiber, Abstract form, Empathy manifestationAbstract. Fiber art is both a traditional art and modern art, while the material is the first language for fiber art,since the material is the basis of fiber art, which is also the carrier of fiber art and the external materialized result of fiber language.With the development of modern fiber materials are becoming increasingly rich, the new materials bring the fiber art new opportunities for its development. This paper is based on the importance of the materials on fiber art, taking it as the cutting point, using the double-sided description of ramie fiber material, discussing the performance of empathy and abstract form of ramie fiber material, so as to provide references for the creation of textile fiber art .

Abstract: Ramie fiber is known as "China grass". In this paper, Ramie was treated in the experiment of high temperature, low temperature, high and low temperature conditions. The results show that the high temperature affects the strength and breaking elongation obviously for ramie fiber. Low temperature and high & low temperature cycle does not affect much on the strength and breaking elongation.

Abstract: In this paper, ramie was degummed with hydrogen peroxide and then reduced with reducer. The reducing process can improved the strength and softness of the fiber by 20.96% and 23.88%, respectively. A comparison was made between the fiber oxidation degummed with reducing and degummed with traditional method. Compared with the fiber degummed with traditional method, the strength of the fiber oxidation degummed with reducing was 13.87% lower, but the elongation of the fiber is 12.27% higher.