Journal of The American Leather Chemists Association最新文献_第10页

Dual Functional Replacement Syntans for Leather 皮革双功能替代合成纤维

IF 0.9 4区工程技术

Journal of The American Leather Chemists Association Pub Date : 2021-03-01 DOI: 10.34314/jalca.v116i3.4248

J. Alla, Nishad Fathima Nishter, J. Rao

引用次数: 2

Alternative Tanning Agent for Leather Industry from a Sustainable Source 可持续来源的皮革工业鞣剂替代品

IF 0.9 4区工程技术

Journal of The American Leather Chemists Association Pub Date : 2021-03-01 DOI: 10.34314/jalca.v116i3.4249

Cigdem Ozkan, H. Ozgunay

{"title":"Alternative Tanning Agent for Leather Industry from a Sustainable Source","authors":"Cigdem Ozkan, H. Ozgunay","doi":"10.34314/jalca.v116i3.4249","DOIUrl":"https://doi.org/10.34314/jalca.v116i3.4249","url":null,"abstract":"Dialdehyde starches with different aldehyde content from native corn starch were prepared by sodium periodate oxidation to be used as a tanning agent in leather making. For this purpose, native corn starch was oxidized with sodium metaperiodate in different molar ratios. After oxidation processes, the yields, solubility in water and aldehyde contents of the obtained dialdehyde starches were determined as well as structure characterizations by Proton Nuclear Magnetic Resonance Spectroscopy, Fourier Transform Infrared Spectroscopy and Gel Permeation Chromatography. Evaluating the gel permeation chromatography data, the dialdehyde starch samples which were thought to be in appropriate molecular weight/size to penetrate into skin fibers were selected to be used in the tanning process. Their tanning abilities were evaluated by investigating hydrothermal stabilities, filling and fiber isolation characteristics and physical properties determined by mechanical tests and organoleptically. From the evaluation of the results, it was revealed that sodium metaperiodate oxidized starches which have appropriate molecular weight and adequate aldehyde content has a remarkable tanning effect and can be utilized as a tanning agent with the advantages of not necessitating pickling process which means saving time and simplifying the production but more importantly offering an important advantage from an environmental point of view.","PeriodicalId":17201,"journal":{"name":"Journal of The American Leather Chemists Association","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83003063","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}

引用次数: 0

Tanning with Aluminum-Gallic Acid Complex 用铝-没食子酸配合物制革

IF 0.9 4区工程技术

Journal of The American Leather Chemists Association Pub Date : 2021-03-01 DOI: 10.34314/jalca.v116i3.4250

Han-Wei Su, Guoying Li

{"title":"Tanning with Aluminum-Gallic Acid Complex","authors":"Han-Wei Su, Guoying Li","doi":"10.34314/jalca.v116i3.4250","DOIUrl":"https://doi.org/10.34314/jalca.v116i3.4250","url":null,"abstract":"To figure out how polyphenol compounds with a low molecular weight helped in aluminum tannage, a complex of gallic acid and aluminum as well as its application to the tanning of hide powder was studied in this paper. Precipitation points of aluminum chloride solution with different concentrations of gallic acid were measured to guide the basification in hide powder tannage. UV-Visible spectra showed that gallic acid and aluminum would form soluble complexes in aqueous solution and the complexation reaction was pH reliable. Through stoichiometry studies, generations of the 1:2 complex under pH 4.0 and 2:3 complex under pH 4.5 were discovered. Results of stoichiometry studies and Fourier Transform Infrared Spectroscopy (FTIR) spectra confirmed that aluminum-gallic acid complex played the role of links which connected collagen molecules rather than gallic acid or aluminum forming individual bridges with collagen. According to the results of differential scanning calorimetry (DSC) and thermal gravity analysis (TGA), denaturation temperature (Td) of hide powder tanned with different methods, such as aluminum, gallic acid-aluminum combination or aluminum-gallic acid complex, was 76.1°, 82.8° and 85.5°C respectively, and the initial decomposition temperature for the aluminum-gallic acid complex tannage was 300.7°C, also higher than those for another two methods. Furthermore, the results of inductive coupled plasma emission spectroscopy (ICP) showed that after washing for 12 h, the Al2O3 content in hide powder tanned with complex could be maintained at 93.42% of that in unwashed samples, which was the highest among three tanning methods.","PeriodicalId":17201,"journal":{"name":"Journal of The American Leather Chemists Association","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79437477","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}

引用次数: 1

Thermal Characterization and Pyrolysis of Waste Leather Treated with CoCl₂ And MnC₂ 用CoCl₂和MnC₂处理废皮革的热特性和热解

IF 0.9 4区工程技术

Journal of The American Leather Chemists Association Pub Date : 2021-02-01 DOI: 10.34314/jalca.v116i2.4235

E. Bañón, A. Torró, A. N. García, M. León, A. Marcilla

引用次数: 0

Study on the Degreasing of Sheep Skin Using Subcritical Fluid Extraction 亚临界流体萃取法对绵羊皮肤脱脂的研究

IF 0.9 4区工程技术

Journal of The American Leather Chemists Association Pub Date : 2021-02-01 DOI: 10.34314/jalca.v116i2.4234

Qiaoping Xia, Meina Zhang, Bo Mao, H. Dai, Zongcai Zhang

引用次数: 0

Approaches Towards Tannery Modernization and Up-Gradation: Leather Industry 4.0 制革厂现代化和升级的途径:皮革工业4.0

IF 0.9 4区工程技术

Journal of The American Leather Chemists Association Pub Date : 2021-02-01 DOI: 10.34314/jalca.v116i2.4237

V. Sivakumar

引用次数: 3

Biodegradability Study of Footwear Soling Materials in Simulated Compost Environment 鞋底材料在模拟堆肥环境中的生物降解性研究

IF 0.9 4区工程技术

Journal of The American Leather Chemists Association Pub Date : 2021-02-01 DOI: 10.34314/jalca.v116i2.4236

M. Mukherjee, T. Loganathan, S. Mandal, G. Saraswathy

引用次数: 0

Research Advances in Oil Tanning Technology 油脂制革技术的研究进展

IF 0.9 4区工程技术

Journal of The American Leather Chemists Association Pub Date : 2021-01-07 DOI: 10.34314/jalca.v116i1.4219

B. Ongarora

{"title":"Research Advances in Oil Tanning Technology","authors":"B. Ongarora","doi":"10.34314/jalca.v116i1.4219","DOIUrl":"https://doi.org/10.34314/jalca.v116i1.4219","url":null,"abstract":"The conventional process of chamois leather manufacturing for industrial applications utilizes fish oil which contains substantial amounts of pentadienoic fatty acid. The applications of chamois leathers include cleaning polished surfaces, manufacture of gloves and orthopedic uses. However, due to fish oil’s strong odor and high cost, considerable efforts have been made to counter these challenges. Esterification of fish oil has been used as a strategy to address the problem of odor and water absorption but this cannot solve the issue of cost. Oils from plant sources such as linseed, rubber, jatropha, castor and sunflower have been investigated as potential tanning substitutes for fish oil. Linseed has been found to produce chamois leather with mild odor and water absorption characteristics close to those of fish oil compared to other oils obtained from plant sources. Oil from goat fleshing has also been investigated in chamois leather production and has been found to produce chamois leather whose odor compares with that of linseed oil tanned leather. If these tanning oil alternatives are combined with other research advances in chamois leather production such as glutaraldehyde pre-tanning and oxidation using hydrogen peroxide or through ozonation, then the issue of cost, odor and long oxidation period can be resolved.","PeriodicalId":17201,"journal":{"name":"Journal of The American Leather Chemists Association","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2021-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89360164","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}

引用次数: 0

Transglutaminase Crosslinked Gelatin Films Extracted from Tanned Leather Waste 从鞣革废料中提取转谷氨酰胺酶交联明胶薄膜

IF 0.9 4区工程技术

Journal of The American Leather Chemists Association Pub Date : 2021-01-07 DOI: 10.34314/jalca.v116i1.4216

E. Baggio, B. Scopel, D. Krein, C. Rigueto, C. Baldasso, A. Dettmer

{"title":"Transglutaminase Crosslinked Gelatin Films Extracted from Tanned Leather Waste","authors":"E. Baggio, B. Scopel, D. Krein, C. Rigueto, C. Baldasso, A. Dettmer","doi":"10.34314/jalca.v116i1.4216","DOIUrl":"https://doi.org/10.34314/jalca.v116i1.4216","url":null,"abstract":"The production of biodegradable polymers has proved to be a promising alternative, since these materials have accelerated degradation, contributing to the reduction of residues and the reduction of environmental pollution. The tannery wastes contain considerable collagen and can be used for gelatin extraction and film production for use in agriculture. Gelatin-based films, however, present some challenges for practical application, such as permeability and solubility in water, parameters that can be improved through the crosslinking process by employing enzymes, promoting the union of polymeric gelatin chains. In this context, the action of the enzyme transglutaminase was investigated to improve the properties of gelatin films recovered from leather and chitosan residues, which were evaluated according to thickness, solubility, permeability, mechanical properties, and soil degradation. The results indicated that the enzyme concentration in the films had a significant effect on the properties of water permeability and solubility and strain to rupture. The evaluation of soil degradation showed that films with higher enzyme addition took longer to be degraded.","PeriodicalId":17201,"journal":{"name":"Journal of The American Leather Chemists Association","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2021-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74668236","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}

引用次数: 4

Ionic Liquid Functionalised Nanoparticles Based Tanning System as a Less Chrome Tanning Approach 离子液体功能化纳米颗粒制革系统作为一种低铬制革方法

IF 0.9 4区工程技术

Journal of The American Leather Chemists Association Pub Date : 2021-01-07 DOI: 10.34314/jalca.v116i1.4218

Chandrasekar Inbasekar, N. Fathima

引用次数: 1