Chemistry of Aromatics Compounds and Dyes detailed Syllabus for Textile Technology (TC), I – scheme has been taken from the MSBTE official website and presented for the diploma students. For Subject Code, Subject Name, Lectures, Tutorial, Practical/Drawing, Credits, Theory (Max & Min) Marks, Practical (Max & Min) Marks, Total Marks, and other information, do visit full semester subjects post given below.
For all other Diploma in Textile Technology (TC) Syllabus for 3rd Sem I – Scheme MSBTE, do visit Diploma in Textile Technology (TC) Syllabus for 3rd Sem I – Scheme MSBTE Subjects. The detailed Syllabus for chemistry of aromatics compounds and dyes is as follows.
Rationale:
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Competency:
The aim of this course is to help the student to attain the following industry identified competency through various teaching learning experiences:
- Use aromatic compounds and dyes in textile processing.
Course Outcomes:
The theory, practical experiences and relevant soft skills associated with this course are to be taught and implemented, so that the student demonstrates the following industry oriented COs associated with the above mentioned competency:
- Identify relevant processes for manufacturing of dyes.
- Select relevant aromatic compounds for manufacturing of dye intermediates.
- Prepare relevant azo dyes by diazotization and coupling.
- Prepare relevant dye intermediates by sulfonation, nitration, and reduction.
- Select relevant dyes for dyeing of fabrics.
- Prepare dyes based on chemical structure and properties.
Suggested Exercises:
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Instruments Required:
The major equipment with broad specification mentioned here will usher in uniformity in conduct of experiments, as well as aid to procure equipment by authorities concerned.
Equipment Name with Broad Specifications
- Borosilicate test tubes (diameter-13 mm, length-100 mm), beakers (150 ml. 250 ml), soda glass rod, test tube holder, test tube stand
- Bunsen burner (diameter-11 mm, height-125 mm, gas inlet-8 mm), tripod stand, wire gauze
- Burette stand, clamp
- Burette (50 ml), pipette (25 ml), conical flask (250 ml.
- Simple funnel (rim-120 mm, stem length-120 mm), filler paper, suction pump, porcelain Buchner funnel (inside diameter-14 5 mm. perforated area diameter-11 mm, depth-8 5 mm.
- Round bottom flask (200 ml)
- Coil reflux condenser (24/40, 200 mm.
Unit 1
Aromatic Hydrocarbons
Total Teaching Hours – 10
Distribution of Theory Marks
R Level – 02
U Level – 04
A Level – 06
Total Marks – 12
Unit Outcomes (UOs) (in cognitive domain)
- Explain characteristics of the specified aromatic compounds.
- Identify the given aromatic compounds by their functional groups.
- Describe with sketches the process of separation of relevant aromatic compounds in coal tar.
- Describe with sketches the method of preparing benzene and toluene from the given material.
- Explain the given aromatic electrophilic substitution reaction.
Topics and Sub-topics
- Aliphatic and aromatic I compounds: difference.
- Aromatic compounds: functional groups, structure, and nomenclature.
- Coal tar distillation
- Benzene: preparation methods-From coal tar, aromatization of n-hexane and acetylene.
- Toluene: preparation methods-from coal tar, aromatization of n-heptane, by Friedel-Crafts alkylation, by Wurtz-Fittig reaction.
- Aromatic electrophilic substitutions: sulphonation and nitration- mechanism and types.
Unit 2
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Unit 3
Aromatic amines and aryl diazonium salts
Total Teaching Hours – 12
Distribution of Theory Marks
R Level – 02
U Level – 03
A Level – 05
Total Marks – 10
Unit Outcomes (UOs) (in cognitive domain)
- Describe with sketches the the method of preparation of the given aromatic amine.
- Explain chemical properties of the given aromatic amines.
- Describe with sketches the the method of preparation of the given aryl diazonium salt.
- Explain chemical properties of the given aryl diazonium salt.
Topics and Sub-topics
- Aniline: preparation methods-from nitrobenzene, azo compounds.
- Chemical properties of aniline: nitration, sulfonation, oxidation, reaction with nitrous acid.
- Benzene diazonium chloride: preparation methoddiazotization of aniline.
- Chemical properties of benzene diazonium chloride.
Unit 4
Polynuclear hydrocarbons and dye intermediates
Total Teaching Hours – 08
Distribution of Theory Marks
R Level – 02
U Level – 03
A Level – 05
Total Marks – 10
Unit Outcomes (UOs) (in cognitive domain)
- Identify polynuclear hydrocarbons based on nomenclature, classification, and resonating structure.
- Compare naphthalene and anthracene based on the given chemical properties.
- Identify the given dye intermediates based on nomenclature and structure.
- Describe with sketches the the method of preparing the given dye intermediate by sulfonation, nitration, and reduction.
Topics and Sub-topics
- Polynuclear hydrocarbons: nomenclature, classification, and resonating structure.
- Chemical properties of naphthalene and anthracene: :nitration, sulfonation, reduction, and oxidation.
- Dye intermediates: nomenclature and structure of H-acid, J-acid, G-acid, Naphthionic acid, Gamma acid, and Schaffers acid.
Unit 5
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Unit 6
Dyes- Structure and property relationship
Total Teaching Hours – 12
Distribution of Theory Marks
R Level – 02
U Level – 04
A Level – 08
Total Marks – 14
Unit Outcomes (UOs) (in cognitive domain.
- Identify the factors governing absorption of light by the given organic compounds.
- Explain the relationship between colour and chemical constitution of the given dye.
- Explain the relationship between chemical structure and substantivity of the given dye.
- Explain the relationship between chemical structure and fastness properties of the given dye.
- Describe with sketches the the method of preparation of the given dye containing the given functional group.
Topics and Sub-topics
- Absorption of light by organic compounds: valence bond theory and molecular orbital theory.
- Colour and chemical constitution of dye: Witts theory, chromophore, Auxochrome.
- Substantivity: Relation between chemical structure of dye and substantivity, linearity, coplanarity.
- Fastness property: Types, relation between fastness and structure of dye.
- Nitro and azo dyes: structure and preparation.
Note: To attain the COs and competency, above listed UOs need to be undertaken to achieve the ‘Application Level’ of Blooms Cognitive Domain Taxonomy.
Note:
Legends: R= Remember, U=Understand, A =.Apply and above (Blooms Revised taxonomy)
Note: This specification table provides general guidelines to assist student for their learning and to teachers to teach and assess students with respect to attainment of UOs. The actual distribution of marks at different taxonomy levels (of R, U and A) in the question paper may vary from above table.
Suggested Student Activities:
Other than the classroom and laboratory learning, following are the suggested student-related co-curricular activities which can be undertaken to accelerate the attainment of the various outcomes in this course: Students should conduct following activities in group and prepare reports of about 5 pages for each activity, also collect/record physical evidences for their (students) portfolio which will be useful for their placement interviews:
- Collect information about dyes from various dye manufactures and prepare report/ presentation.
- Visit dyeing unit in textile industry, collect photographs related to the process of different dye solution preparation and compare it with laboratory method. Prepare a report/ presentation.
- Find relevance between class of dye, colour shed and chromophore present in dye. Prepare a report/ presentation.
- Visit nearby textile industry and collect information about the dyes used. Prepare a report/ presentation.
- Visit quality control department in textile industry and collect information about testing of dyes. Prepare a presentation on testing methods used in industry.
Suggested Special Instructional Strategies:
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Suggested Micro-Projects
Only one micro-project is planned to be undertaken by a student that needs to be assigned to him/her in the beginning of the semester. In the first four semesters, the micro-project are group-based. Elowever, in the fifth and sixth semesters, it should be preferably be individually undertaken to build up the skill and confidence in every student to become problem solver so that s/he contributes to the projects of the industry. In special situations where groups have to be formed for micro-projects, the number of students in the group should not exceed three.
The micro-project could be industry application based, internet-based, workshopbased, laboratory-based or field-based. Each micro-project should encompass two or more COs which are in fact, an integration of PrOs, UOs and ADOs. Each student will have to maintain dated work diary consisting of individual contribution in the project work and give a seminar presentation of it before submission. The total duration of the micro-project should not be less than 16 (sixteen) student engagement hours during the course. The student ought to submit micro-project by the end of the semester to develop the industry oriented COs.
A suggestive list of micro-projects are given here. Similar micro-projects could be added by the concerned faculty:
- Collection of Dyes Samples- Collect samples of reactive, vat, disperse, direct and Sulphur dyes from manufacturers/ textile industry and prepare presentation based on structure and colour index.
- Dye intermediates – Prepare presentation on different types of dye intermediates used in textile industry, based on the structure, IUPAC name, and method of preparation.
- Qualitative analysis of dye samples- Collect samples of different dyes, use qualitative analysis to detect their type and report the results in presentation form.
- Qualitative analysis of dyed fabrics- Collect samples of dyed fabrics from textile industries, use qualitative analysis to detect type of dye on fabric and report the results in presentation form.
- Preparation of azoic dyes- Prepare different types of azoic dyes by choosing diazotization and coupling reactions and report the results in presentation form.
Suggested Learning Resources:
- A textbook of Organic Chemistry Bahl, A.; Bahl, B. S. S. Chand Publishing, New Delhi, 2016, ISBN: 9789352531967
- A textbook of Organic Chemistry Tewari, K. S.; Vishnoi, N. K. Vikas Publishing Elouse, Noida (UP), 2015. ISBN: 9788125918578
- Organic Chemistry Gupta, S. S. Oxford University Press, New Delhi, 2016, ISBN: 9780199451647
- Practical Chemistry Pandey,
- P.; Bajpai, D. N.; Giri, S. S. Chand Publishing, New Delhi, 2016, ISBN: 9788121908122
- The Chemistry of Synthetic Dyes, Vol-V Venkatraman, K. Academic Press, Elsevier, USA, 2012, ISBN: 9780127170053
- Synthetic Dyes Chatwal, G. R. Himalaya Publishing House, Mumbai, 2009, ISBN: 9788184882193
- Chemistry of Dyes and Principles of Dyeing (Technology of Textile Processing. Shenai, V. A. Sevak Publications, Mumbai, 1983
Software/Learning Websites:
For the complete Syllabus, results, class timetable, and many other features kindly download the iStudy App
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For detail Syllabus of all other subjects of Textile Technology, I – scheme do visit Textile Technology 3rd Sem Syllabus for I – scheme.
For all Textile Technology results, visit MSBTE Textile Technology all semester results direct links.