Pub Date : 2024-04-17DOI: 10.14314/polimery.2024.3.4
Mateusz Rudnik
Appropriate recursive formulas were obtained for generating repeatable and self-similar cellular structures obtained from PLA using the FDM/FFF method. The H1s, H2s self-similar models show mechanical self-similarity relationships based on simulation and compression test. In addition, the H1s models show higher displacement values than the H1i recurrent models. For the results of the H2s models, it is not conclusive whether they show higher displacement values.
{"title":"Study of cellular structures built from self-similar models and repeatable structures manufactured by FDM/FFF technology","authors":"Mateusz Rudnik","doi":"10.14314/polimery.2024.3.4","DOIUrl":"https://doi.org/10.14314/polimery.2024.3.4","url":null,"abstract":"Appropriate recursive formulas were obtained for generating repeatable and self-similar cellular structures obtained from PLA using the FDM/FFF method. The H1s, H2s self-similar models show mechanical self-similarity relationships based on simulation and compression test. In addition, the H1s models show higher displacement values than the H1i recurrent models. For the results of the H2s models, it is not conclusive whether they show higher displacement values.","PeriodicalId":20319,"journal":{"name":"Polimery","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140691830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-17DOI: 10.14314/polimery.2024.3.6
Natalia Kowalska, Paweł Szczygieł, Michał Skrzyniarz, S. Błasiak
Effect of shells number (1–5) on tensile properties of PLA samples printed using the FDM/FFF technique was investigated. The crack surface was also analyzed. The best properties were obtained for 4-shell sample. However, due to the large coefficient of variation (>> 10%) in the case of elongation, 3-shell sample was selected for testing the machining impact. Such a large coefficient of variation can be explained by the presence of voids between the layers. The greater the number of layers, the greater the structure defects. Machining increases surface smoothness while reducing tensile strength and practically unchanged elongation at break.
{"title":"Effect of shells number and machining on selected properties of 3D-printed PLA samples","authors":"Natalia Kowalska, Paweł Szczygieł, Michał Skrzyniarz, S. Błasiak","doi":"10.14314/polimery.2024.3.6","DOIUrl":"https://doi.org/10.14314/polimery.2024.3.6","url":null,"abstract":"Effect of shells number (1–5) on tensile properties of PLA samples printed using the FDM/FFF technique was investigated. The crack surface was also analyzed. The best properties were obtained for 4-shell sample. However, due to the large coefficient of variation (>> 10%) in the case of elongation, 3-shell sample was selected for testing the machining impact. Such a large coefficient of variation can be explained by the presence of voids between the layers. The greater the number of layers, the greater the structure defects. Machining increases surface smoothness while reducing tensile strength and practically unchanged elongation at break.","PeriodicalId":20319,"journal":{"name":"Polimery","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140692936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-17DOI: 10.14314/polimery.2024.4.2
Krzysztof Balawender, Ł. Przeszłowski
Composites based on thermoplastic polyurethanes (TPUR) were obtained using the twin-screw extrusion method. Influence of the addition of 6, 7 and 8 wt% silica and 1–3 wt%. aluminum oxide and 1–3 wt%. dibutyl phthalate (plasticizer) on Rockwell hardness, Charpy impact strength and tensile mechanical properties was tested. The best properties were obtained for a composite containing 8 wt% silica, 3 wt% aluminum oxide and 3 wt% dibutyl phthalates. For this composite, the renal pelvicalyceal system was obtained using the FFF method.
{"title":"The use of thermoplastic polyurethane composites to develop a model of the renal pelvicalyceal system by 3D printing","authors":"Krzysztof Balawender, Ł. Przeszłowski","doi":"10.14314/polimery.2024.4.2","DOIUrl":"https://doi.org/10.14314/polimery.2024.4.2","url":null,"abstract":"Composites based on thermoplastic polyurethanes (TPUR) were obtained using the twin-screw extrusion method. Influence of the addition of 6, 7 and 8 wt% silica and 1–3 wt%. aluminum oxide and 1–3 wt%. dibutyl phthalate (plasticizer) on Rockwell hardness, Charpy impact strength and tensile mechanical properties was tested. The best properties were obtained for a composite containing 8 wt% silica, 3 wt% aluminum oxide and 3 wt% dibutyl phthalates. For this composite, the renal pelvicalyceal system was obtained using the FFF method.","PeriodicalId":20319,"journal":{"name":"Polimery","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140690941","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-16DOI: 10.14314/polimery.2024.3.3
Melda Altikatoglu Yapaoz, Sevnur Keskin Dogruyol
1-(naphthalen-2-yl)-2-(1H-pyrazol-1-yl) ethanone (MPPY) was synthesized. The structure was characterized by spectral analysis (1H-NMR, FTIR). The molar absorptivity of MPPY is high enough, similarly to acetonaphthone derivatives, to be used as an efficient type I photoinitiator. The influence of MPPY concentration and the addition of the co-initiator N-methyldiethanolamine (MDEA) on methyl methacrylate (MMA) polymerization were also investigated. Additionally, MPPY showed good antibacterialactivity against Escherichia coli and Staphylococcus aureus (diffusion method).
合成了 1-(萘-2-基)-2-(1H-吡唑-1-基)乙酮（MPPY）。通过光谱分析（1H-NMR、FTIR）对其结构进行了表征。MPPY 的摩尔吸收率很高，与萘乙酮衍生物类似，可用作高效的 I 型光引发剂。此外，还研究了 MPPY 浓度和添加辅助引发剂 N-甲基二乙醇胺（MDEA）对甲基丙烯酸甲酯（MMA）聚合的影响。 此外，MPPY 对大肠杆菌和金黄色葡萄球菌具有良好的抗菌活性（扩散法）。
{"title":"Pyrazole-based photoinitiator with antibacterial activity","authors":"Melda Altikatoglu Yapaoz, Sevnur Keskin Dogruyol","doi":"10.14314/polimery.2024.3.3","DOIUrl":"https://doi.org/10.14314/polimery.2024.3.3","url":null,"abstract":"1-(naphthalen-2-yl)-2-(1H-pyrazol-1-yl) ethanone (MPPY) was synthesized. The structure was characterized by spectral analysis (1H-NMR, FTIR). The molar absorptivity of MPPY is high enough, similarly to acetonaphthone derivatives, to be used as an efficient type I photoinitiator. The influence of MPPY concentration and the addition of the co-initiator N-methyldiethanolamine (MDEA) on methyl methacrylate (MMA) polymerization were also investigated. Additionally, MPPY showed good antibacterialactivity against Escherichia coli and Staphylococcus aureus (diffusion method).","PeriodicalId":20319,"journal":{"name":"Polimery","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140696101","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-16DOI: 10.14314/polimery.2024.3.2
Paulina Romańska, S. Kuciel
The effect of basalt and glass fibres and moisture on the impact strength, tensile mechanical properties and heat resistance of PA 10.10 and PA 6 was examined. It was shown that PA 10.10 composites can compete with PA 6 composites in terms of mechanical properties, in a humid environment. Their heat resistance was lower than that of PA 6 composites. Regardless of the type of polyamide, composites with glass fibre had better properties than those with basalt fibre.
研究了玄武岩和玻璃纤维以及水分对 PA 10.10 和 PA 6 的冲击强度、拉伸机械性能和耐热性的影响。结果表明，在潮湿环境中，PA 10.10 复合材料的机械性能可与 PA 6 复合材料相媲美。其耐热性低于 PA 6 复合材料。无论聚酰胺的类型如何，使用玻璃纤维的复合材料都比使用玄武岩纤维的复合材料具有更好的性能。
{"title":"PA 10.10 and PA 6 composites with glass or basalt fibre: mechanical properties in dry and wet state","authors":"Paulina Romańska, S. Kuciel","doi":"10.14314/polimery.2024.3.2","DOIUrl":"https://doi.org/10.14314/polimery.2024.3.2","url":null,"abstract":"The effect of basalt and glass fibres and moisture on the impact strength, tensile mechanical properties and heat resistance of PA 10.10 and PA 6 was examined. It was shown that PA 10.10 composites can compete with PA 6 composites in terms of mechanical properties, in a humid environment. Their heat resistance was lower than that of PA 6 composites. Regardless of the type of polyamide, composites with glass fibre had better properties than those with basalt fibre.","PeriodicalId":20319,"journal":{"name":"Polimery","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140698608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-02-13DOI: 10.14314/polimery.2024.1.4
S. Sarraj, M. Szymiczek, Dariusz Jędrejek, Agata Soluch, Roksana Kurpanik
Materials based on polydimethylsiloxane have been developed with antibacterial activity and mechanical properties required for wound treatment. Sage herb (raw, modified, and polyphenol extract) was used as a filler in an amount of 5 and 10% by weight. Physicochemical, mechanical, and biological properties were examined. The results indicate a beneficial effect of sage modification on the tested properties.
{"title":"Sage-modified polydimethylsiloxane applied as antibacterial wound dressing material","authors":"S. Sarraj, M. Szymiczek, Dariusz Jędrejek, Agata Soluch, Roksana Kurpanik","doi":"10.14314/polimery.2024.1.4","DOIUrl":"https://doi.org/10.14314/polimery.2024.1.4","url":null,"abstract":"Materials based on polydimethylsiloxane have been developed with antibacterial activity and mechanical properties required for wound treatment. Sage herb (raw, modified, and polyphenol extract) was used as a filler in an amount of 5 and 10% by weight. Physicochemical, mechanical, and biological properties were examined. The results indicate a beneficial effect of sage modification on the tested properties.","PeriodicalId":20319,"journal":{"name":"Polimery","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139781616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-02-13DOI: 10.14314/polimery.2024.1.3
Hanan Al-Otaibi, Aseel Alomair, Latifa AlSewailem, Rana AlFadhel, Sarah Bin Durayhim, F. Al-Otibi, Raedah I. Alharbi, A. Alfouzan, Sara Al Taweel, H. Alshehri
The influence of saliva pH on the adhesion of Candida albicans to PMMA-based prosthetic materials manufactured using conventional and digital techniques (3D printing, milling) was examined. The obtained data were subjected to statistical analysis using one-way ANOVA and the Tukey HSD post hoc test (a = 0.05). Materials obtained by 3D printing had the highest surface roughness, while those obtained conventionally had the highest number of CFU (colony-forming unit). The mean CFU value was highest at pH 4.5 and statistically significant compared to other pH values. No significant correlation was found between surface roughness and the average CFU value. The surface of materials obtained using the conventional and milling methods showed lower adhesion of Candida albicans.
{"title":"The influence of salivary pH on the adhesion of Candida to acrylic prosthetic materials obtained using conventional and digital techniques","authors":"Hanan Al-Otaibi, Aseel Alomair, Latifa AlSewailem, Rana AlFadhel, Sarah Bin Durayhim, F. Al-Otibi, Raedah I. Alharbi, A. Alfouzan, Sara Al Taweel, H. Alshehri","doi":"10.14314/polimery.2024.1.3","DOIUrl":"https://doi.org/10.14314/polimery.2024.1.3","url":null,"abstract":"The influence of saliva pH on the adhesion of Candida albicans to PMMA-based prosthetic materials manufactured using conventional and digital techniques (3D printing, milling) was examined. The obtained data were subjected to statistical analysis using one-way ANOVA and the Tukey HSD post hoc test (a = 0.05). Materials obtained by 3D printing had the highest surface roughness, while those obtained conventionally had the highest number of CFU (colony-forming unit). The mean CFU value was highest at pH 4.5 and statistically significant compared to other pH values. No significant correlation was found between surface roughness and the average CFU value. The surface of materials obtained using the conventional and milling methods showed lower adhesion of Candida albicans.","PeriodicalId":20319,"journal":{"name":"Polimery","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139839666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-02-13DOI: 10.14314/polimery.2024.1.3
Hanan Al-Otaibi, Aseel Alomair, Latifa AlSewailem, Rana AlFadhel, Sarah Bin Durayhim, F. Al-Otibi, Raedah I. Alharbi, A. Alfouzan, Sara Al Taweel, H. Alshehri
The influence of saliva pH on the adhesion of Candida albicans to PMMA-based prosthetic materials manufactured using conventional and digital techniques (3D printing, milling) was examined. The obtained data were subjected to statistical analysis using one-way ANOVA and the Tukey HSD post hoc test (a = 0.05). Materials obtained by 3D printing had the highest surface roughness, while those obtained conventionally had the highest number of CFU (colony-forming unit). The mean CFU value was highest at pH 4.5 and statistically significant compared to other pH values. No significant correlation was found between surface roughness and the average CFU value. The surface of materials obtained using the conventional and milling methods showed lower adhesion of Candida albicans.
{"title":"The influence of salivary pH on the adhesion of Candida to acrylic prosthetic materials obtained using conventional and digital techniques","authors":"Hanan Al-Otaibi, Aseel Alomair, Latifa AlSewailem, Rana AlFadhel, Sarah Bin Durayhim, F. Al-Otibi, Raedah I. Alharbi, A. Alfouzan, Sara Al Taweel, H. Alshehri","doi":"10.14314/polimery.2024.1.3","DOIUrl":"https://doi.org/10.14314/polimery.2024.1.3","url":null,"abstract":"The influence of saliva pH on the adhesion of Candida albicans to PMMA-based prosthetic materials manufactured using conventional and digital techniques (3D printing, milling) was examined. The obtained data were subjected to statistical analysis using one-way ANOVA and the Tukey HSD post hoc test (a = 0.05). Materials obtained by 3D printing had the highest surface roughness, while those obtained conventionally had the highest number of CFU (colony-forming unit). The mean CFU value was highest at pH 4.5 and statistically significant compared to other pH values. No significant correlation was found between surface roughness and the average CFU value. The surface of materials obtained using the conventional and milling methods showed lower adhesion of Candida albicans.","PeriodicalId":20319,"journal":{"name":"Polimery","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139779701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-02-13DOI: 10.14314/polimery.2024.1.2
Katarzyna Pojnar, Barbara Pilch-Pitera, Maciej Kisiel, Aleksandra Zioło, Michał Kędzierski
Polyacrylic resins containing glycidyl methacrylate (GMA), methyl methacrylate (MMA) and n-butyl acrylate (BA) in various molar ratios were obtained. Triaryl sulfonium hexafluorophosphate was used as a photoinitiator and reacted with the epoxy groups of GMA. The relationship between the chemical structure of polyacrylic resins and the parameters of the UV curing reaction and the functional properties of powder coatings was investigated. The appearance and mechanical properties of the coatings were determined based on thickness, gloss, roughness, deformability, scratch resistance, adhesion to steel, hardness, and water contact angle. DMA was used to assess the cross-link density. Powder coatings with good physical and mechanical properties and curing time of 70 s were obtained.
{"title":"UV-curable powder transparent coatings based on oligo(meth)acrylic resins","authors":"Katarzyna Pojnar, Barbara Pilch-Pitera, Maciej Kisiel, Aleksandra Zioło, Michał Kędzierski","doi":"10.14314/polimery.2024.1.2","DOIUrl":"https://doi.org/10.14314/polimery.2024.1.2","url":null,"abstract":"Polyacrylic resins containing glycidyl methacrylate (GMA), methyl methacrylate (MMA) and n-butyl acrylate (BA) in various molar ratios were obtained. Triaryl sulfonium hexafluorophosphate was used as a photoinitiator and reacted with the epoxy groups of GMA. The relationship between the chemical structure of polyacrylic resins and the parameters of the UV curing reaction and the functional properties of powder coatings was investigated. The appearance and mechanical properties of the coatings were determined based on thickness, gloss, roughness, deformability, scratch resistance, adhesion to steel, hardness, and water contact angle. DMA was used to assess the cross-link density. Powder coatings with good physical and mechanical properties and curing time of 70 s were obtained.","PeriodicalId":20319,"journal":{"name":"Polimery","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139841232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-02-13DOI: 10.14314/polimery.2024.1.4
S. Sarraj, M. Szymiczek, Dariusz Jędrejek, Agata Soluch, Roksana Kurpanik
Materials based on polydimethylsiloxane have been developed with antibacterial activity and mechanical properties required for wound treatment. Sage herb (raw, modified, and polyphenol extract) was used as a filler in an amount of 5 and 10% by weight. Physicochemical, mechanical, and biological properties were examined. The results indicate a beneficial effect of sage modification on the tested properties.
{"title":"Sage-modified polydimethylsiloxane applied as antibacterial wound dressing material","authors":"S. Sarraj, M. Szymiczek, Dariusz Jędrejek, Agata Soluch, Roksana Kurpanik","doi":"10.14314/polimery.2024.1.4","DOIUrl":"https://doi.org/10.14314/polimery.2024.1.4","url":null,"abstract":"Materials based on polydimethylsiloxane have been developed with antibacterial activity and mechanical properties required for wound treatment. Sage herb (raw, modified, and polyphenol extract) was used as a filler in an amount of 5 and 10% by weight. Physicochemical, mechanical, and biological properties were examined. The results indicate a beneficial effect of sage modification on the tested properties.","PeriodicalId":20319,"journal":{"name":"Polimery","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139841438","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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