Theory of Tannages detailed syllabus for Leather Technology (Leather Tech) for 2019 regulation curriculum has been taken from the Anna Universities official website and presented for the Leather Tech students. For course code, course name, number of credits for a course and other scheme related information, do visit full semester subjects post given below.
For Leather Technology 4th Sem scheme and its subjects, do visit Leather Tech 4th Sem 2019 regulation scheme. The detailed syllabus of theory of tannages is as follows.
Course Objective:
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Unit I
Chromium Chemistry
Definition of ligands, nucleophilicity of ligands and electronegativity of donor atoms, chelation and masking, and introduction of factors controlling molecular stability of transition metal complexes. Historical overview of mineral tanning. Electronic configuration and its implications, common oxidation states of chromium, redox stabilities of chromium (VI) and chromium (III) salts, redox potentials and their interconversion, protolysis, kinetic inertness of chromium (III), basicity, oxolation and polymerisation, Stiasnys series, McClandish precipitation point.
Unit II
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Unit III
Mechanism of Inorganic Tannages
Theories of chrome tanning; absorption, coating, electrostatic and hydrogen bond interactions and coordinative forces involved in chrome tanning, indirect evidence for chrome binding sites in protein, hydrothermal stability of chromecollagen compound. Aqueous chemistry of aluminium (III), zirconium (IV), titanium (IV) and iron(III) and its relevance to mineral tanning, chemistry of silicates and phosphates and their tanning mechanisms, mechanism of inorganic tannages and their relevance to combination tanning.
Unit IV
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Unit V
Mechanism of Vegetable and Other Organic Tannages
Mechanism of reaction of vegetable tannins with collagen. Electrolytic equilibria, diffusion equilibria, fixation and absorption equilibria. Principles in pit, drum and E.I. tanning. Mechanism of tanning with aldehydes and other organic tanning agents; Synthetic tannins – Classification – properties, uses in leather industry.
Course Outcome:
For the complete syllabus, results, class timetable, and many other features kindly download the iStudy App
It is a lightweight, easy to use, no images, and no pdfs platform to make students’s lives easier..
Text Books:
- Fred O Flaherty, Roddy, T.W. andLollar, R.M. The Chemistry and Technology of Leather, Vol.III, Type of tannages, RoberE.Krieger Publishing Co.,New York, 1978.
- Gustavson K.H. Chemistry of Tanning Processes Academic Press, New York, 1958.
- Bienkiewicz, K., Physical Chemistry of Leather Manufacture, Krieger, Florida 1982.
- Covington A D, “Tanning Chemistry” RSC Publishing, Cambridge, UK, 2009.
- Howes, F.N. “Vegetable tanning materials”, Butterworth. London, 1953.
- Haslam, E. “The biochemistry of Plants”, Vol.7. Academic Press, 1981, Chapter 18, “Vegetable tannins”. “A survey of modern vegetable tannages”. Tanning extracts Producers Federation, Switzerland, 1975.
- Humphreyes, G.H.W. and Jones, C.R. “The manufacture of sole and other heavy leathers”. Pergamon Press, 1966. Chapter 5, “Vegetable tannin materials and syntans”.
- Vegetable and Synthetic Tanning agents, Sundara Rao, V.S., et al – The Leather Industry, (ed. by Sadulla, S) Kothari Desk book series, H.C. Kothari Group (Publications Division), Madras, p.71, 1995.
For detailed syllabus of all other subjects of Leather Technology, 2019 regulation curriculum do visit Leather Tech 4th Sem subject syllabuses for 2019 regulation.
For all Leather Technology results, visit Anna University Leather Tech all semester results direct link.