Topic outline

  • General

    • Announcements Forum

      Class Schedule :

      08:30-10:00

      10:00-11:30

      11:30-01:00

      01:00-02:30

      02:30-04:00

      04:00-05:30

      SATURDAY





      SUNDAY

      		 A3




      MONDAY



      A3


      TUESDAY

      WEDNESDAY




      Counseling Hour :

      Saturday     : 10.00 am -01.00 pm
      Tuesday      : 10.00 am -11.30 am & 01.00 pm-2.30 pm.
      Wednesday : 11.30 am -02.30 pm

  • Introduction


    dan gruchy gif | Tumblr


    Welcome Note


    Dear Students,

    Assalamu Alaikum and a very warm welcome to all of you.

    This is Dr. Mainul Morshed, and I am here to conduct your new course Textile Wet Process-II and share and learn something new about the world of Wet Processing. So, let's gather knowledge with you all together. Feel free to approach me any kind of problem.

    This course aims to provide students with an in-depth knowledge of the principles of textile preparatory processes and develop the students’ understanding on the important concept and technology of textile coloration.

    Thank you very much.

    Regards,


    Course Teacher

    Dr. Mainul Morshed
    Assistant Professor
    Department of Textile Engineering
    Faculty of Engineering
    Daffodil International University

    Cell : +8801406238336
    Email : mainul.te@diu.edu.bd


    General Course Description : 

    Course Title: Textile Wet Process- II

    Course Code: TE 313

    Credit Hours: 3 (Theory, 3 contact hours per week) 

    Prerequisite: TE-209 (Textile Wet Process-I)

    Course Level: Level 3 Term 1


    Course Objectives :

    After the completion of this course, students will be able to-

    1.  Learn in-details about dyeing process of textiles with reactive, sulphur, azoic and disperse dyes by using discontinuous and continuous methods.

    2.  Know about printing process of woven and knit fabrics with reactive, sulphur, azoic and disperse dyes by using different methods, including block, screen and roller printing methods.

    3.  Attain knowledge about important chemical and mechanical finishes, such as textile mercerization, resin finishing, water repellent finishing and shearing process.


    Course Content:

    1. Technology of Dyeing

    a. Reactive Dyes

    b. Sulphur Dyes.

    c. Disperse Dyes.

    d. Azoic Dyes.


    2. Technology of Printing

    a. Introduction of Textile Printing, Functions and Types of textile thickener. 

    b. Methods and Styles of textile printing.

    c. Block Printing, Screen Printing, Roller Printing.

    d. Printing Faults.

    e. Direct, Resist, Discharge, Burnout, Flock styles.


    3. Technology of Finishing

    a. Introduction to Textile Finishing

    b. Mercerization Process

    c. Shearing Process

    d. Resin Finish

    e. Water Repellent & Water Proof Finish


    • Reference Books

      1. Fundamentals and Practices in Colouration of Textiles by J.N Chakrabarti
      2. Technology of Bleaching and Mercerizing by Dr. V.A Shenai (Vol-III)*
      3. Dyeing and Chemical Technology of Textile fibres by E.R Trotman*
      4. Textile Coloration & Finishing by Warren S. Perking
      5. Textile Printing by W. Miles
      6. Basic Principle of Textile coloration by Arthur D. Broadbent

  • Library Resources and References

    Modern Library Resources and Services - Library & Information Science Network

  • Assignment


    • Assignment
      Assignment Title: Dyes and Their Properties

      Regulations:
      # The Assignment should be submitted hard copy first on or before 19 February, 2024.
      # For late submission there will be negative marking.
      # Assignment can be submitted in both printed or hand written format.
      # There is no limit of pages (but should not provide a thesis)
      # It Should be submitted by each and every single student by him/herself.
      # Any kinds of copy from other classmate's assignment would cause negative marking.
      # Every single student must submit the soft copy (.pdf version) of his/her assignment on or before 15/03/2024 on BLC.  only soft copy submission will not be considered.
      # Late submission on BLC will also cause negative marking.
      # For online soft copy submission, students are must follow the criteria:
      File name should be ( Student ID + Student Name)

    • Assignment Submission

      Please submit your assignment copy (only .pdf file) here.

  • Presentation

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    Sec A3:  18/02/2024


    Regulations:
    # Each group will select there own topic.
    # Presentation will conduct group wise.
    # Total number of groups should be 7 for each section.
    # Each group should contain minimum of 7 persons.
    # Each group will get 10 minutes to finish there presentation.
    # There will be no second option for the presentation.
    # All male students must present themselves in formal dress up; for female students no dress code is applicable.
    # Every single group must submit the soft copy (.ppt version) of his/her assignment on or before 15/03/2024 on BLC. 
    # Late submission on BLC will cause negative marking.
    # For online soft copy submission, students are must follow the criteria:
    File name should be (Section + Presentation topic)

  • Chapter 01 : Reactive Dyes


    Chapter Objectives : 

      1. To teach the students about the concepts and fundamentals of Textile dyeing. 
      2. They also learn about reactive dyes and its characteristics, Reasons of popularity of reactive dyes, General structure of reactive dyes.
      3. Learn about the applying procedure of reactive dyes.

    Chapter Outcomes :

    After completing this chapter Students can,

      1. Learn about dyeing process of textiles with reactive.
      2. Know about the characteristics and general structure of reactive dyes. 
      3. Know about its popularity.
      4. Know the dyeing mechanism with reactive dyes.
      5. Know about hydrolysis and stripping process of reactive dyes.

    • 1) Reactive Dye File
    • Quiz test-1 Assignment

      Draw a reactivity and temperature relation diagram of reactive dyes.

    • Dye Introduction Forum

      According to our knowledge on dyes, we came to know about the specific properties or the criteria to identify a chemical whether it is dye or not.

      please have some discussions about the key criteria for a chemical to be a dye.

    • Dyeing - Fiber Reactive Dyes C URL

      Fiber-reactive dyes form strong covalent bonds with cellulosic fibers, which result in good wash fastness. Reactive dyes are subject to hydrolysis, which is the chemical reaction of the dye with the water. Hydrolysis must be controlled for dye optimization. A wide range of reactive dye chemistries is available, resulting in a range of performance attributes. Dyeing Basics Dye Color Perception Basic Dyeing Principles Fiber Reactive Dyes Direct Dyes Vat Dyes Sulfur Dyes Pigments

  • Chapter 02 : Sulphur Dyes

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    Chapter Objectives : 

      1. To teach the students about the concepts and fundamentals of Textile dyeing. 
      2. They also learn about sulphur dyes and its characteristics.
      3.  Learn about the chemistry of sulphur dyeing.
      4. Learn about the application of sulphur dyes in textile material.

    Chapter Outcomes :

    After completing this Chapter Students can,

      1. Learn about dyeing process of textiles with sulphur.
      2. Know about the basic difference between sulphur dyes and reactive dyes. 
      3. Know the dyeing mechanism with Sulphur dyes.
      4. Know about stripping process of Sulphur dyes.
      5.  Know about its popularity for producing black shades.

  • Class Test 1


    The first class test of Wet Process 2 course will held on the following dates on the respective class hours.

    please check and take preparation according to the class sections.

    CLass Test Schedule:

    Section A3: 04/02/24


    Rules and Regulations

    Marks: 15

    Duration of Class Test: 30 minutes


    1st CT Syllabus

    > definition of Dye and fastness
    > Dye and Chemical Calculations
    > Wet process flow chart
    > Trichromatic Combinations
    > Reactive Dyes and its properties
    > Classification of reactive dyes.

    • Class Test 2


      The 2nd class test of Wet Process 2 course will held on the following dates on the respective class hours.

      please check and take preparation according to the class sections.

      CLass Test Schedule:

      Section A3: 18/02/24


      Rules and Regulations

      Marks: 15

      Duration of Class Test: 30 minutes


      2nd CT Syllabus

      > Dye and Chemical Calculations
      > Wet process flow chart
      > Trichromatic Combinations
      > Mechanism of Reactive Dyes
      > Reactive dye Structures
      > Functionality of Reactive Dyes

      • Instructions for Midterm Examination

        考试 GIF - Exam Test Cheating - Discover & Share GIFs


        Syllabus for Midterm Exam :

        1. Reactive dyes and its application (Definition, Features, Structures, Classification, Mechanism, Popularity, Details of dyeing process, Assistants, Hydrolysis & Stripping) 
        2. Sulphur dyes and its application (Definition, Features, Structures, Mechanism/Chemistry, Details of dyeing process, Defects, Stripping, Applications, Popularity & Comparison)
        3. Introduction to Textile Printing (Definition, Methods & Styles name, Textile Thickener)
        4. Introduction to Textile Finishing (Definition, Classification, Objects & Factors)


        Instructions for Midterm Exam : 

        Midterm Exam Assessment Plan 

        There will be 
        Short Question & Broad Question : Marks : 25

        Total = 25

        Time : 1.5 hours

        Midterm Exam Preparation

        • Discuss with each other and find the problems regarding upcoming Midterm Examination
        • If you have any problems that you can not solve, then inform me and we will discuss it in the classroom and here in the Chatbox

        • Chapter 06, Disperse Dyes

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          Chapter Objectives : 

            1. To teach the students about the Disperse dyes and its characteristics. 
            2. Learn about the dyeing mechanism of synthetic fibres with disperse dyes.
            3. Learn about the application procedure of disperse dyes.

          Chapter Outcomes :

          After completing this Chapter Students can,

            1. Learn about the characteristics of disperse dyes.
            2. Know how can it entrapped with the fibres.
            3. Know about Carrier, HTHP and Thermosol mrthod dyeing.
            4. Know about the classifications of disperse dyes.

        • Mercerizing




          Chapter Objectives : 

            1. Learn about the mercerization process.
            2. To teach them about shearing process.
            3. To teach them about resin finish.


          Chapter Outcomes : 

          After completing this Chapter Students can,

            1. Learn about different finishing technology.
            2. Know about mercerization process.
            3. Know about shearing process.
            4. Know about resin finishing process.

          • Mercerizing File
          • Textile Preparation- Mercerizing URL

            This video is all about mercerization process of cotton fabric. Caustic soda mercerization of cotton is carried out for improvement of luster and dye uptake of cotton fabric that's why it is important process in textile industry. In this video you will learn how mercerization process changes physio-chemical properties of cotton. This change lead cotton fabric to bright luster appearance, good dye absorbency, fabric strength as compared to un mercerized cotton fabric.

        • Chapter 05 : Azoic Color


          Chapter Objectives : 

            1. To teach the students about the Azoic Colors and its characteristics. 
            2. Learn about the chemistry of Azoic Color.
            3. Learn about the application procedure of Azoic Color.

          Chapter Outcomes :

          After completing this Chapter Students can,

            1. Learn about the different names of azoic color
            2. Know the chemistry of azoic color and its properties.
            3. Know about naphtholation, diazotization and coupling reaction.
            4.  Know about the stripping process of azoic color.

        • Instructions for Final Examination

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          Syllabus for Final Exam :

          1.     Azoic color & its application : (Definition, Different names, Properties, Chemistry, Used chemicals in detail, Problems, Stripping, Comparison)

          2.     Disperse dyes & its application : (Definition, Properties, Dyeing Mechanism, Classification, Application Method, Factors, Used chemicals in detail, Carrier method, HTHP method & Thermasol dyeing method)

          3.     Technology of Printing : ( Block Printing, Screen printing, Roller printing, Several Comparisons, Direct, Discharge, Resist, Flock, Burnout styles)

          4.     Technology of finishing : (Mercerization Process, Shearing process, Crease resistant finishing, Water proof & Water repellent finish)


          Instructions for Final Exam : 

          Final Exam Assessment Plan 

          Time: 2 hours
          Marks: 40

          Final Exam Preparation

          • Discuss with each other and find the problems regarding upcoming Final Examination
          • If you have any problems that you can not solve, then inform me and we will discuss it in the classroom and here in the Chatbox.