K. M. Nalyanya, R. Rop, A. Onyuka, Zephania Birech, A. Sasia
. Physical properties of leather form vital quality parameters that determine the performance characteristics in their areas of applications. However, the transformational processing of hide to leather involves a series of both chemical and physical/mechanical changes that affect these mechanical properties. Many researches have been published regarding the effect of processing on the mechanical properties of leather. However, the effect of entire crusting operations (post tanning) on the mechanical properties is not documented. This study reports the findings of the effect of crusting operations (retanning, dyeing and fatliquoring) on the mechanical properties of the final leather. Results have shown that retanning process improves tear and tensile strengths, distensions at crack and burst, and shrinkage temperature. An improvement in the organoleptic properties such as fullness was recorded in retanned crust leather. However, the uniformity coefficient and percentage elongation significantly decreased after retanning. Dyeing raises the elongation at break, distensions at crack and burst, shrinkage temperature and uniformity coefficient whereas both tensile and tear strengths decreased after dyeing. Similarly, fatliquored samples recorded higher elongation at break values, and distension values. Conversely, tensile and tear strengths, shrinkage temperature and uniformity coefficient decreased as a result of fatliquoring process. All the samples tested at tanning, retanning, dyeing and fatliquoring processes indicated no damage at 50,000 flexes. The study discussed these effects using transmission of fracture and damage mechanics in leather
{"title":"Effect of Crusting Operations on the Physical Properties of Leather","authors":"K. M. Nalyanya, R. Rop, A. Onyuka, Zephania Birech, A. Sasia","doi":"10.24264/LFJ.18.4.4","DOIUrl":"https://doi.org/10.24264/LFJ.18.4.4","url":null,"abstract":". Physical properties of leather form vital quality parameters that determine the performance characteristics in their areas of applications. However, the transformational processing of hide to leather involves a series of both chemical and physical/mechanical changes that affect these mechanical properties. Many researches have been published regarding the effect of processing on the mechanical properties of leather. However, the effect of entire crusting operations (post tanning) on the mechanical properties is not documented. This study reports the findings of the effect of crusting operations (retanning, dyeing and fatliquoring) on the mechanical properties of the final leather. Results have shown that retanning process improves tear and tensile strengths, distensions at crack and burst, and shrinkage temperature. An improvement in the organoleptic properties such as fullness was recorded in retanned crust leather. However, the uniformity coefficient and percentage elongation significantly decreased after retanning. Dyeing raises the elongation at break, distensions at crack and burst, shrinkage temperature and uniformity coefficient whereas both tensile and tear strengths decreased after dyeing. Similarly, fatliquored samples recorded higher elongation at break values, and distension values. Conversely, tensile and tear strengths, shrinkage temperature and uniformity coefficient decreased as a result of fatliquoring process. All the samples tested at tanning, retanning, dyeing and fatliquoring processes indicated no damage at 50,000 flexes. The study discussed these effects using transmission of fracture and damage mechanics in leather","PeriodicalId":38857,"journal":{"name":"Leather and Footwear Journal","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68830060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
L. Alexandrescu, M. Georgescu, M. Sonmez, D. Gurau, A. Ficai, R. Trusca, L. Tudoroiu
{"title":"Polyamide/polyethylene/graphite nanocomposites: development and morpho-structural and physical-mechanical characterisation","authors":"L. Alexandrescu, M. Georgescu, M. Sonmez, D. Gurau, A. Ficai, R. Trusca, L. Tudoroiu","doi":"10.24264/LFJ.18.3.8","DOIUrl":"https://doi.org/10.24264/LFJ.18.3.8","url":null,"abstract":"","PeriodicalId":38857,"journal":{"name":"Leather and Footwear Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49569040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hasan Özgünay, M. Mutlu, Cemile Tosun, Ö. Demirci, O. Abali, Yigit Kaman, Talip Sepici
{"title":"Practices on ecological chromium tanning system","authors":"Hasan Özgünay, M. Mutlu, Cemile Tosun, Ö. Demirci, O. Abali, Yigit Kaman, Talip Sepici","doi":"10.24264/lfj.18.3.3","DOIUrl":"https://doi.org/10.24264/lfj.18.3.3","url":null,"abstract":"","PeriodicalId":38857,"journal":{"name":"Leather and Footwear Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43001650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Identifying barriers for implementing green supply chain management (GSCM) in footwear industry of Bangladesh: a Delphi study approach","authors":"M. Sarker, F. Ahmed, A. Deb, Manjushree Chowdhury","doi":"10.24264/LFJ.18.3.1","DOIUrl":"https://doi.org/10.24264/LFJ.18.3.1","url":null,"abstract":"","PeriodicalId":38857,"journal":{"name":"Leather and Footwear Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42023321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
G. Zăinescu, V. Deselnicu, R. Constantinescu, D. Georgescu
{"title":"Biocomposites from tanned leather fibres with applications in constructions","authors":"G. Zăinescu, V. Deselnicu, R. Constantinescu, D. Georgescu","doi":"10.24264/LFJ.18.3.4","DOIUrl":"https://doi.org/10.24264/LFJ.18.3.4","url":null,"abstract":"","PeriodicalId":38857,"journal":{"name":"Leather and Footwear Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47332169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
D. Martins, L. Duarte, Vânia F. M. Silva, A. Crispim, E. Beghini, Filipe Crispim
{"title":"Study of vegetable extracts effect on wet-white leather","authors":"D. Martins, L. Duarte, Vânia F. M. Silva, A. Crispim, E. Beghini, Filipe Crispim","doi":"10.24264/LFJ.18.3.6","DOIUrl":"https://doi.org/10.24264/LFJ.18.3.6","url":null,"abstract":"","PeriodicalId":38857,"journal":{"name":"Leather and Footwear Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49235663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"An empirical analysis on export status quo and international competitiveness of Chinese footwear products","authors":"Chunyu Zhang","doi":"10.24264/LFJ.18.3.2","DOIUrl":"https://doi.org/10.24264/LFJ.18.3.2","url":null,"abstract":"","PeriodicalId":38857,"journal":{"name":"Leather and Footwear Journal","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68830051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Productivity improvement of leather products industry in Bangladesh using lean tools: a case study","authors":"Nadia Akter Swarna, Md. Abu Sayid Mia","doi":"10.24264/lfj.18.3.7","DOIUrl":"https://doi.org/10.24264/lfj.18.3.7","url":null,"abstract":"","PeriodicalId":38857,"journal":{"name":"Leather and Footwear Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41490009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The shock absorption functionality of nanomaterials based shoes during body motion","authors":"Hui Shen, Zhaoxiu. Chen","doi":"10.24264/lfj.18.3.5","DOIUrl":"https://doi.org/10.24264/lfj.18.3.5","url":null,"abstract":"","PeriodicalId":38857,"journal":{"name":"Leather and Footwear Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46503667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
V. Moreira, J. Ferreira, Vânia F. M. Silva, A. Crispim, L. Carita, T. Cruz, Filipe Crispim
{"title":"Synergic effect of bovine hair hydrolysate and sulfited lignins on leather retanning","authors":"V. Moreira, J. Ferreira, Vânia F. M. Silva, A. Crispim, L. Carita, T. Cruz, Filipe Crispim","doi":"10.24264/lfj.18.3.9","DOIUrl":"https://doi.org/10.24264/lfj.18.3.9","url":null,"abstract":"","PeriodicalId":38857,"journal":{"name":"Leather and Footwear Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46465311","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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