The Effect of Water Aging on the Impact Strength of Nano-Silica HempThe Effect of Water Aging on the Impact Strength of Nano-Silica Hemp Fiber/Epoxy CompositesFiber/Epoxy Composites.

Yıl 2025, Cilt: 15 Sayı: 2, 682 - 691, 01.06.2025

Ahmet Erkliğ , Bilal Yıldırım

https://doi.org/10.21597/jist.1562248

https://izlik.org/JA76KX89XZ

Öz

In this study, the effects of water aging on the Charpy impact behavior of polymer composites reinforced with natural hemp fiber fabric and nano-silica were investigated. To observe the influence of nano-particle addition on hydrophilic behavior, nano-silica particles were added to the resin in weight percentages of 0.5%, 1.5%, and 3% for composite production. Samples with dimensions of 55 x 10 mm were cut from the produced composites according to ISO 179/92 standard, and the aging process was carried out in tap water at 30℃ for 800 hours. The aged samples were tested using a Köger 3/70 impact test device with 15 J pendulum energy. The measured results were tabulated to show both absorbed energy and toughness. The test results revealed that the addition of nano-silica reduced both toughness and absorbed energy. It was observed that 1.5% nano-silica reduced toughness by 33.73% and absorbed energy by 22.54%. After aging, the greatest decrease in impact energy was measured as 33.4% for the 1.5% nano-silica, while the greatest reduction in toughness was 32% for the 3% nano-silica.

Anahtar Kelimeler

Hemp fiber composite , Nanosilica , Water aging , Charpy

Nano-Silika Katkılı Kenevir/Reçine Kompozitleri Suda Yaşlandırmanın Darbe Dayanımına Etkisi

https://izlik.org/JA76KX89XZ

Öz

Bu çalışmada doğal kenevir elyaf kumaş ile üretilen nano silika katkılı polimer kompozitlerin su ile yaşlandırılmasının Charpy darbe davranışına etkileri araştırılmıştır. Nano parçacık katkısının hidrofilik davranışa etkilerini gözlemlemek amacıyla nano silika parçacıkları ağırlıkça %0.5, %1.5 ve %3 oranlarında reçineye eklenerek kompozit üretimleri gerçekleştirilmiştir. Üretilen kompozitlerden ISO 179/92 standardına göre 55 x 10 mm ölçüsünde numuneler kesilmiş ve 800 saat 30℃’de çeşme suyunda yaşlandırma işlemi gerçekleştirilmiştir. Yaşlandırılan numuneler 15 J sarkaç enerjili Köger 3/70 darbe test cihazı ile test edilmiştir. Ölçülen sonuçlar hem emilen enerji hem de tokluğu gösterecek şekilde tablo haline getirilmiştir. Testler sonucunda nano katkısının tokluğu ve emilen enerjiyi düşürdüğü görülmüştür. %1.5 nano silikanın tokluğu %33.73 emilen enerjiyi ise %22,54 azalttığı gözlenmiştir. Yaşlandırma sonrasında ise darbe enerjisinde en fazla düşüş %1.5 nano oranında %33.4 olarak ölçülürken toklukta %3 nano oranında %32 olarak ölçülmüştür.

Anahtar Kelimeler

Kenevir elyaf kompozit , Nano silika , Suda yaşlandırma , Charpy

Teşekkür

Bu makaleyi yazmamda yardım eden danışmanım Ahmet ERKLİĞ'e ayrıca hem testlerim sırasında hem de yazma sürecimde yardım eden hocalarım Nureddin Furkan DOĞAN ve Zeynel Abidin OĞUZ'a teşekkür ederim.

Kaynakça

• Adzhubei, I., Jordan, D. M., & Sunyaev, S. R. (2013). Predicting functional effect of human missense mutations using PolyPhen‐2. Current Protocols in Human Genetics, 76(1), 7–20. https://doi.org/10.1002/0471142905.hg0720s76
• Avivi, A., Albrecht, U., Oster, H., Joel, A., Beiles, A., & Nevo, E. (2001). Biological clock in total darkness: The Clock/MOP3 circadian system of the blind subterranean mole rat. Proceedings of the National Academy of Sciences, 98(24), 13751-13756. https://doi.org/10.1073/pnas.181484498
• Civelek, İ., Kankılıç, T., & Akın, D. F. (2024). An investigation of Clock gene variations in Turkish Nannospalax species. Russian Journal of Genetics, 60(5), 626-639. https://doi.org/10.1134/S1022795424040057
• David-Gray, Z. K., Cooper, H. M., Janssen, J. W. H., Nevo, E., & Foster, R. G. (1999). Spectral tuning of a circadian photopigment in a subterranean ‘blind’ mammal (Spalax ehrenbergi). FEBS Letters, 461(3), 343–347. https://doi.org/10.1016/S0014-5793(99)01455-6
• Dehdari Ebrahimi, N., Sadeghi, A., Shojaei-Zarghani, S., Shahlaee, M. A., Taherifard, E., Rahimian, Z., ... & Safarpour, A. R. (2023). Protective effects of exogenous melatonin therapy against oxidative stress to male reproductive tissue caused by anti-cancer chemical and radiation therapy: A systematic review and meta-analysis of animal studies. Frontiers in Endocrinology, 14, 1184745. https://doi.org/10.3389/fendo.2023.1184745
• Doyle, J. (1991). DNA protocols for plants. In Molecular techniques in taxonomy (pp. 283-293). Berlin, Heidelberg: Springer Berlin Heidelberg.
• Dubocovich, M. L. (2007). Melatonin receptors: Role on sleep and circadian rhythm regulation. Sleep Medicine, 8, 34-42. https://doi.org/10.1016/j.sleep.2007.10.007
• European Bioinformatics Institute (EMBL-EBI). (n.d.). Ensembl Genome Browser [Veritabanı]. https://www.ensembl.org (Erişim: Haziran, 2024).
• Flesher, J. W., Horn, J., & Lehner, A. F. (1998). Carcinogenicity of 1-hydroxy-3-methylcholanthrene and its electrophilic sulfate ester 1-sulfooxy-3-methylcholanthrene in Sprague-Dawley rats. Biochemical and Biophysical Research Communications, 243(1), 30–35. https://doi.org/10.1006/bbrc.1997.8048
• Foulkes, N. S., Borjigin, J., & Snyder, S. H. (1997). Rhythmic transcription: The molecular basis of circadian melatonin synthesis. Trends in Neurosciences, 20(10), 487-492. https://doi.org/10.1016/S0166-2236(97)01109-0
• Gao, Y., Wu, X., Zhao, S., Zhang, Y., Ma, H., Yang, Z., ... & Zhang, Q. (2019). Melatonin receptor depletion suppressed hCG-induced testosterone expression in mouse Leydig cells. Cellular & Molecular Biology Letters, 24(1), 1-14.
• Gorbunova, V., Hine, C., Tian, X., Ablaeva, J., Gudkov, A. V., Nevo, E., & Seluanov, A. (2012). Cancer resistance in the blind mole rat is mediated by concerted necrotic cell death mechanism. Proceedings of the National Academy of Sciences, 109(47), 19392–19396. https://doi.org/10.1073/pnas.1217211109
• Hall, T. A. (1999). BioEdit: A user-friendly biological sequence alignment editor and analysis program for Windows 95/98/N. Nucleic Acids Symposium Series, Oxford, 95-98.
• Hannibal, J., Hindersson, P., Nevo, E., & Fahrenkrug, J. (2002). The circadian photopigment melanopsin is expressed in the blind subterranean mole rat, Spalax. Neuroreport, 13(11), 1411-1414.
• Higgins, E. M., Bos, J. M., Mason-Suares, H., Tester, D. J., Ackerman, J. P., MacRae, C. A., ... & Ackerman, M. J. (2017). Elucidation of MRAS-mediated Noonan syndrome with cardiac hypertrophy. JCI Insight, 2(5).
• Human Genome Mutation Database. (n.d.). PolyPhen-2: Prediction of functional effects of human nsSNPs. http://genetics.bwh.harvard.edu/pph2/ (Erişim: Haziran, 2024).
• Jimenez‐Jorge, S., Guerrero, J. M., Jimenez‐Caliani, A. J., Naranjo, M. C., Lardone, P. J., Carrillo‐Vico, A., ... & Molinero, P. (2007). Evidence for melatonin synthesis in the rat brain during development. Journal of Pineal Research, 42(3), 240-246. https://doi.org/10.1111/j.1600-079X.2006.00411.x
• Jung‐Hynes, B., Reiter, R. J., & Ahmad, N. (2010). Sirtuins, melatonin and circadian rhythms: Building a bridge between aging and cancer. Journal of Pineal Research, 48(1), 9-19. https://doi.org/10.1111/j.1600-079X.2009.00729.x
• Liu, J., Clough, S. J., Hutchinson, A. J., Adamah-Biassi, E. B., Popovska-Gorevski, M., & Dubocovich, M. L. (2016). MT1 and MT2 melatonin receptors: A therapeutic perspective. Annual Review of Pharmacology and Toxicology, 56(1), 361-383. https://doi.org/10.1146/annurev-pharmtox-010814-124742
• Ma, Z., Xu, L., Liu, D., Zhang, X., Di, S., Li, W., ... & Yan, X. (2020). Utilizing melatonin to alleviate side effects of chemotherapy: A potentially good partner for treating cancer with aging. Oxidative Medicine and Cellular Longevity, 2020(1), 6841581. https://doi.org/10.1155/2020/6841581
• Manov, I., Hirsh, M., Iancu, T. C., Malik, A., Sotnichenko, N., Band, M., Avivi, A., & Shams, I. (2013). Pronounced cancer resistance in a subterranean rodent, the blind mole-rat, Spalax: In vivo and in vitro evidence. BMC Biology, 11(1), 1–18. https://doi.org/10.1186/1741-7007-11-91
• Najafi, M., Shirazi, A., Motevaseli, E., Geraily, G., Norouzi, F., Heidari, M., & Rezapoor, S. (2017). The melatonin immunomodulatory actions in radiotherapy. Biophysical Reviews, 9, 139-148. https://doi.org/10.1007/s12551-017-0256-8
• National Center for Biotechnology Information. (n.d.). Basic Local Alignment Search Tool (BLAST) [Veritabanı]. National Institutes of Health. https://blast.ncbi.nlm.nih.gov/Blast.cgi (Erişim: Haziran, 2024).
• National Center for Biotechnology Information. (2024). NCBI Genome Database. https://www.ncbi.nlm.nih.gov/genome/ (Erişim: Haziran, 2024).
• Németh, A., Hegyeli, Z., Sendula, T., Horváth, M., Czabán, D., & Csorba, G. (2016). Danger underground and in the open–predation on blind mole rats (Rodentia: Spalacinae) revisited. Mammal Review, 46(3), 204-214.
• Nevo, E. (2022). Evolution of communication systems underground in a blind mammal, Spalax. In P. S. M. Hill, V. Mazzoni, N. Stritih-Peljhan, M. Virant-Doberlet, & A. Wessel (Eds.), Biotremology: Physiology, Ecology, and Evolution (Vol. 8). Springer, Cham. https://doi.org/10.1007/978-3-030-97419-0_15
• Pham, T. T., Lee, E. S., Kong, S. Y., Kim, J., Kim, S. Y., Joo, J., ... & Park, B. (2019). Night-shift work, circadian and melatonin pathway-related genes and their interaction on breast cancer risk: Evidence from a case-control study in Korean women. Scientific Reports, 9(1), 10982.
• Steele, T. A., St Louis, E. K., Videnovic, A., & Auger, R. R. (2021). Circadian rhythm sleep–wake disorders: A contemporary review of neurobiology, treatment, and dysregulation in neurodegenerative disease. Neurotherapeutics, 18(1), 53–74. https://doi.org/10.1007/s13311-021-01031-8
• Sun, H., Pan, D., Liu, D., Cheng, Y., Zhang, Y., & Wang, Z. (2022). Melatonin secretion, molecular expression and evolution of MT1/2 in two Lasiopodomys species. Mammalian Biology, 102(1), 99-107.
• The UniProt Consortium. (n.d.). UniProt Knowledgebase [Veritabanı]. European Bioinformatics Institute. https://www.uniprot.org (Erişim: Haziran, 2024).
• Topachevskii, W. A. (1969). Fauna USSR Spalacidae. Leningrad, USSR: Nauka (English translation: Springfield, VA, USA: US Department of Commerce National Technical Information Service).
• University of Manchester. (n.d.). PRINTS Database [Veritabanı]. https://www.bioinf.manchester.ac.uk/dbbrowser/PRINTS/ (Erişim: Haziran, 2024).
• Wang, X. (2009). The antiapoptotic activity of melatonin in neurodegenerative diseases. CNS Neuroscience & Therapeutics, 15(4), 345-357. https://doi.org/10.1111/j.1755-5949.2009.00105.x
• Zhang, J., Jiang, H., Du, K., Xie, T., Wang, B., Chen, C., ... & Yuan, Y. (2021). Pan‐cancer analyses reveal genomics and clinical characteristics of the melatonergic regulators in cancer. Journal of Pineal Research, 71(3), e12758. https://doi.org/10.1111/jpi.12758