The modification of an epoxy resin by natural plant materials

Masiewicz, Joanna; Roszowska-Jarosz, Martyna; Kostrzewa, M.; Jasik, Aleksandra; Krawczyk, Piotr

doi:10.2478/oszn-2020-0003

Cited by 4 publications

(5 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A further increase in the content of naringenin resulted in its more pronounced presence in the microstructures. In the case of sample containing 4 phr of naringenin (Figure 1c), a yellowbrown color area (7) of naringenin concentration could be distinguished. Their presence was also clearly visible in the case of the sample containing 8% naringenin (Figure 1d), where numerous sites of aggregation of naringenin with the flame retardant additive (8) could be seen.…”

Section: Microscopic Characteristics Of Samplesmentioning

confidence: 97%

See 1 more Smart Citation

Effect of the Addition of Naringenin Derived from Citrus on the Properties of Epoxy Resin Compositions

Latos-Brozio,

Masek,

Czechowski

et al. 2024

Molecules

View full text Add to dashboard Cite

This research concerns the modification of commercially available epoxy resin with flame retardants in order to obtain aging-resistant and antimicrobial polymeric materials with a plant stabilizer dedicated to use in rail transport. Polymer compositions based on epoxy resin, fiberglass fabric, and naringenin were prepared. Naringenin was added as a natural stabilizer at 2, 4, and 8 phr. The materials were subjected to solar aging lasting 800 h. The hardness of the samples, surface energy, and carbonyl indexes were determined, and the color change in the composition after aging was analyzed. In addition, microscopic observations, analyses of mechanical properties, and microbiological tests were performed. The hardness determination showed that the samples retained their functional properties after solar aging. The increase in the polar component of the surface energy of all materials indicated the beginning of the degradation process of the composites. The tensile one-directional tests were carried out for plane samples taken in three directions (0, 90, and 45 degrees referred to a plate edge) before and after the aging process. The addition of naringenin did not affect the functional and surface properties of the epoxy resin-based materials. Polyphenol stabilized polymer composites, as evidenced by the results of carbonyl indexes. Moreover, the obtained samples showed good antimicrobial properties for E. coli and C. albicans in the field of testing the viability of microbial cells in contact with the tested surfaces.

show abstract

Section: Microscopic Characteristics Of Samplesmentioning

confidence: 97%

“…There is also interest in using post-agricultural waste such as walnut shell [ 5 ], hazelnut shell, and sunflower husk [ 6 ] as ecological fillers for resin composites. Furthermore, bast and leaf fibers were used to modify epoxy composites [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of the Addition of Naringenin Derived from Citrus on the Properties of Epoxy Resin Compositions

Latos-Brozio,

Masek,

Czechowski

et al. 2024

Molecules

View full text Add to dashboard Cite

show abstract

“…The SEM micrographs of the composites revealed good interfacial bonding between the fiber and epoxy matrix. Masiewicz et al [54] used three different natural materials such as collagen, hemp fibers, and pepper powder as a modifier for epoxy matrix and studied the changes in gel time and mechanical properties. For the preparation of epoxy composites, hemp fibers and pepper powder were mixed directly with epoxy resin, while collagen was first dissolved in ethylene glycol followed by mixing in epoxy resin.…”

Section: Bast and Leaf Fibers Modified Epoxy Compositementioning

confidence: 99%

“…Figure 7. Impact strength of epoxy composites containing 5-20% natural filler (collagen, hemp fibers, and pepper powder[54]). Open access.…”

mentioning

confidence: 99%

Natural Fillers as Potential Modifying Agents for Epoxy Composition: A Review

2022

View full text Add to dashboard Cite

Epoxy resins as important organic matrices, thanks to their chemical structure and the possibility of modification, have unique properties, which contribute to the fact that these materials have been used in many composite industries for many years. Epoxy resins are repeatedly used in exacting applications due to their exquisite mechanical properties, thermal stability, scratch resistance, and chemical resistance. Moreover, epoxy materials also have really strong resistance to solvents, chemical attacks, and climatic aging. The presented features confirm the fact that there is a constant interest of scientists in the modification of resins and understanding its mechanisms, as well as in the development of these materials to obtain systems with the required properties. Most of the recent studies in the literature are focused on green fillers such as post-agricultural waste powder (cashew nuts powder, coconut shell powder, rice husks, date seed), grass fiber (bamboo fibers), bast/leaf fiber (hemp fibers, banana bark fibers, pineapple leaf), and other natural fibers (waste tea fibers, palm ash) as reinforcement for epoxy resins rather than traditional non-biodegradable fillers due to their sustainability, low cost, wide availability, and the use of waste, which is environmentally friendly. Furthermore, the advantages of natural fillers over traditional fillers are acceptable specific strength and modulus, lightweight, and good biodegradability, which is very desirable nowadays. Therefore, the development and progress of “green products” based on epoxy resin and natural fillers as reinforcements have been increasing. Many uses of natural plant-derived fillers include many plant wastes, such as banana bark, coconut shell, and waste peanut shell, can be found in the literature. Partially biodegradable polymers obtained by using natural fillers and epoxy polymers can successfully reduce the undesirable epoxy and synthetic fiber waste. Additionally, partially biopolymers based on epoxy resins, which will be presented in the paper, are more useful than commercial polymers due to the low cost and improved good thermomechanical properties.

show abstract

“…The epoxy resin was modified with plant extracts using the procedure by Masiewisc et al, 2020. [20] Varying concentrations of plant extracts by weight of extract recovery (10%, 25%, and DOI: 10.31695/IJASRE.2023.9.5.2 50%) were added into the epoxy resin and stirred with a mechanical stirrer for 10 minutes. Trailed by the addition of a stoichiometric amount of Hardener according to manufacturer's requirements.…”

Section: Modification Of Epoxy Resin With Plant Extractsmentioning

confidence: 99%

Effects of Extracts of Alchornea Cordifolia on Biocorrosion Control on Sewer Concrete

William-Porbeni D,

Ogbereyo S,

Gumus R.H

2023

IJASRE

View full text Add to dashboard Cite

Concrete infrastructures that make up the sewer system exposed to sewer waste waters are often subjected to microbial corrosion. The biogenic sulfuric acid produced by the activity of sulfur-oxidizing bacteria A.thiooxidans attacks concrete in sewers leading to loss of concrete mass and deterioration.The aim of this study was to control concrete biodegradation using plant extracts of Alchornea Cordifolia. Concrete samples were corroded for 26 months in real sewer wastewater conditions. The influence of biogenic sulfuric acid on the biocorrosion of concrete samples was determined in terms of weight loss, pH, sulfate concentration variation, chemical composition changes, and formation of corrosion by-products. Recorded corrosion rates before coating were between 0.071996mpy –1.168546mpy. Changes in sample morphology, ettringite and gypsum formed were observed by X-ray diffraction and SEM methods with corrosion progression.Phytochemicals analysis of extracts samples confirmed the presence of tannins, saponins, flavonoids, and terpenoids produced in plant tissues. GC-MS analysis of the ethanolic extracts identified 26 compounds.The most dominant being Eugenol.Biocorrosion control determined the effects of extracts on concrete corrosion in sewer waters. A marked decline in the rates of corrosion with each extract's coating was recorded for extracts coated concretes (0.002589mpy-0.003256mpy). An increase in inhibition efficiency with an increase in extract concentration was observed and was in the range of50% A.Cordifolia extracts gave the highest inhibitor efficiency. X-ray diffractive analysis and scanning electron microscopy showed morphological variations in concrete before and after coating. Results of ANOVA showed inhibitor concentration as having the most significant effect on the extracts' corrosion inhibition

show abstract

The modification of an epoxy resin by natural plant materials

Cited by 4 publications

References 7 publications

Effect of the Addition of Naringenin Derived from Citrus on the Properties of Epoxy Resin Compositions

Effect of the Addition of Naringenin Derived from Citrus on the Properties of Epoxy Resin Compositions

Natural Fillers as Potential Modifying Agents for Epoxy Composition: A Review

Effects of Extracts of Alchornea Cordifolia on Biocorrosion Control on Sewer Concrete

Contact Info

Product

Resources

About