scholarly journals Influence of Coupling Agent in Mechanical, Physical and Thermal Properties of Polypropylene/Bamboo Fiber Composites: Under Natural Outdoor Aging

Polymers ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 929 ◽  
Author(s):  
Lety del Pilar Fajardo Cabrera de Lima ◽  
Ruth Marlene Campomanes Santana ◽  
Cristian David Chamorro Rodríguez
Keyword(s):  
Coupling Agent ◽  
Natural Fiber ◽  
Bamboo Fiber ◽  
Thermoplastic Composites ◽  
Natural Ageing ◽  
Total Period ◽  
Natural Origin ◽  
Before And After ◽  
Internal Mixer ◽  
Synthetic Origin

Researches on thermoplastic composites using natural fiber as reinforcement are increasing, but studies of durability over time are scarce. In this sense the objective of this study is to evaluate changes in the properties of polypropylene/bamboo fiber (PP/BF) composite and the influence of the use of coupling agent (CA) in these composites after natural ageing. The PP/BF (70/30 wt) composites and 3% wt CA (citric acid from natural origin and maleic anhydride grafted polypropylene from petrochemical origin) were prepared by using an internal mixer chamber and then injection-molded. The samples were exposed to natural weathering for a total period of 12 months and characterized before and after exposure. All exposed composites experienced a decrease in their properties, however, the use of CA promoted more stability; in mechanical properties, the composites with CA showed lower loss about 23% in Young′s modulus, 18% in tensile stress at break, and 6% in impact strength. This behavior was similar in thermal and physical properties, the result for the CA of natural origin being similar to that of synthetic origin. These results indicate that the use of a CA may promote higher interaction between the fiber and the polymer. In addition, the CAs of organic origin and synthetic origin exhibited similar responses to natural ageing.

scholarly journals Effect of Rot-, Fire-, and Water-Retardant Treatments on Jute Fiber and Their Associated Thermoplastic Composites: A Study by FTIR

Polymers ◽  
2021 ◽  
Vol 13 (15) ◽  
pp. 2571
Author(s):  
Sweety Shahinur ◽  
Mahbub Hasan ◽  
Qumrul Ahsan ◽  
Nayer Sultana ◽  
Zakaria Ahmed ◽  
...  
Keyword(s):  
Product Development ◽  
Environmental Sustainability ◽  
Mechanical Performance ◽  
Natural Fiber ◽  
Jute Fiber ◽  
Thermoplastic Composites ◽  
Ftir Analysis ◽  
Renewable Materials ◽  
Weight Percentage ◽  
Chemical Treatments

Natural renewable materials can play a big role in reducing the consumption of synthetic materials for environmental sustainability. Natural fiber-reinforced composites have attracted significant research and commercial importance due to their versatile characteristics and multi-dimensional applications. As the natural materials are easily rotten, flammable, and moisture absorbent, they require additional chemical modification for use in sustainable product development. In the present research, jute fibers were treated with rot-, fire-, and water-retardant chemicals and their corresponding polymer composites were fabricated using a compression molding technique. To identify the effects of the chemical treatments on the jute fiber and their polymeric composites, a Fourier transformed infrared radiation (FTIR) study was conducted and the results were analyzed. The presence of various chemicals in the post-treated fibers and the associated composites were identified through the FTIR analysis. The varying weight percentage of the chemicals used for treating the fibers affected the physio-mechanical properties of the fiber as well as their composites. From the FTIR analysis, it was concluded that crystallinity increased with the chemical concentration of the treatment which could be contributed to the improvement in their mechanical performance. This study provides valuable information for both academia and industry on the effect of various chemical treatments of the jute fiber for improved product development.

Mechanical performance and moisture absorption of various natural fiber reinforced thermoplastic composites

2013 ◽  
Vol 130 (2) ◽  
pp. 969-980 ◽  
Author(s):  
Nicole-Lee M. Robertson ◽  
John A. Nychka ◽  
Kirill Alemaskin ◽  
John D. Wolodko
Keyword(s):  
Moisture Absorption ◽  
Mechanical Performance ◽  
Natural Fiber ◽  
Thermoplastic Composites ◽  
Fiber Reinforced

Natural Fiber Reinforced Thermoplastic Composites

2017 ◽  
pp. 1-38
Author(s):  
Omar Faruk ◽  
Birat KC ◽  
Ahmed Sobh ◽  
Jimi Tjong ◽  
Mohini Sain
Keyword(s):  
Natural Fiber ◽  
Thermoplastic Composites ◽  
Fiber Reinforced

Manufacturing and properties of cotton and jute fabrics reinforced epoxy and PLA composites

2018 ◽  
Vol 32 (19) ◽  
pp. 1840084 ◽  
Author(s):  
Jieng-Chiang Chen ◽  
Jian-Cheng Lin
Keyword(s):  
Epoxy Resin ◽  
Brittle Failure ◽  
Natural Fiber ◽  
Woven Fabrics ◽  
Thermoplastic Composites ◽  
Composite Panels ◽  
Bending Tests ◽  
Jute Fabrics ◽  
Film Method ◽  
Thermosetting Epoxy

This paper studies the effects of plain-woven fabrics of jute and cotton, used as reinforcements, on the mechanical properties of composite panels prepared using epoxy and polylactic acid (PLA) resins as matrix materials. Two different composites were prepared in the current study — natural fiber fabrics reinforced thermosetting epoxy resin and the same fabrics reinforced thermoplastic PLA resin. Two methods were used to manufacture these composites. The thermosetting composites were manufactured by impregnating the epoxy resin with the fabrics by hand lamination. On the other hand, the resin film method was used to manufacture the thermoplastic composites. Tensile, compression and 3-point bending tests were performed on the composite panels. The experimental results indicated that the compressive strengths of cotton/PLA and cotton/epoxy composites are approximately equivalent. The jute-based composites exhibited brittle failure in the tensile test. Furthermore, the 3-point-bending break strength of the cotton/PLA composites was higher than that of the jute/PLA composites.

scholarly journals Modification of Titanium Dioxide Nanoparticles with 3-(Trimethoxysilyl)propyl Methacrylate Silane Coupling Agent

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Thuy-Chinh Nguyen ◽  
Tien-Dung Nguyen ◽  
Duc-Toan Vu ◽  
Duc-Phuong Dinh ◽  
Anh-Hiep Nguyen ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Tio2 Nanoparticles ◽  
Coupling Agent ◽  
Titanium Dioxide Nanoparticles ◽  
X Ray Diffraction ◽  
Nano Tio2 ◽  
Propyl Methacrylate ◽  
Transmission Electron ◽  
Before And After ◽  
Modification Of Titanium

This paper presents some characteristics, properties, and morphology of TiO2 nanoparticles (nano-TiO2) modified with various contents of 3-(trimethoxysilyl)propyl methacrylate (TMSPM) coupling agent. The treatment process was carried out in ethanol solvent at 50oC using ammonia as a catalyst for hydrolysis reaction of silane to silanol. Infrared spectroscopy, thermogravimetric analysis, transmission electron microscopy, field emission scanning electron microscopy, dynamic light scattering, ultraviolet-visible spectroscopy, and X-ray diffraction methods were used for determination of the characteristics, properties of nano-TiO2 before and after treatment. In addition, the contact angle and grafting efficiency of TMSPM on the surface of TiO2 nanoparticles was also evaluated. The obtained results confirmed that TMSPM was grafted to the TiO2 nanoparticles, the agglomeration of nano-TiO2 was decreased, and surface of TiO2 nanoparticles became hydrophobic after modification by TMSPM.

An Empirical Approach for Prediction of Natural Fiber Reinforced Polypropylene Composite Properties

2014 ◽  
Vol 534 ◽  
pp. 69-73
Author(s):  
Ritu Gupta ◽  
Norrozila Sulaiman ◽  
Mohammed Dalour Hossain Beg ◽  
Arun Gupta
Keyword(s):  
Coupling Agent ◽  
Natural Fiber ◽  
Linear Regression Analysis ◽  
Fiber Reinforced ◽  
Scientific Software ◽  
Fiber Reinforced Plastic ◽  
Reinforced Plastic ◽  
Non Linear ◽  
Linear Regressions ◽  
Composite Properties

In this paper, empirical models are proposed using multiple non linear regressions technique to predict the influence on the Youngs modulus and the tensile strength of the natural fiber reinforced plastic composites (NFRPC). Maleic Anhydride grafted polypropylene (MAPP) has been a proven coupling agent (CA) used to improve the interfacial bonding between the fibers and the plastics material. It is important to include the factor of coupling agent, when making predictions the properties of the composites through the models. For the development of the model, data was collected from various research journals presented in literature. Non linear regression analysis was performed to obtain the empirical model using polymath scientific software. The results were found to be within the acceptable range.

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