JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Course Objectives:

• 1. To provide the knowledge of the principle involved in fiber forming polymers, and also the process involved in various spinning processes.
• 2. To understand the manufacturing aspects, properties and the application of different synthetic fibers.
• 3. To provide the knowledge on the spin finishes, selection criterion and also the technology involved in regenerated fiber manufacturing process
• 1. To understand the manufacturing techniques, properties and applications of micro fiber and nano fibers
• 4. To provide the knowledge on the manufacturing processes of polyester and nylon fiber and their surface treatments techniques
• 5. To understand the cleaning methods of spinnerette

Course Outcomes:

• 1. An ability to distinguish the natural and synthetic fibers in terms of the structure and the properties.
• 2. An ability to understand the process and the machinery requirements of the different types of spinning process.
• 3. An ability to understand the need, types and the application of the spin finishes.
• 4. An ability to study the manufacturing and the properties of various types of synthetic fibers used in vogue
• 5. An ability to understand the process, technological requirement for polyester and Nylon fiber production
• 6. To describe the polymerization process and the requirements there of

UNIT - I

Introduction to manmade fibers – Distinction between Natural and Man-Made Fibers for Production, Properties & End Uses. important operations in the production of synthetic fibres – fibres varying substrate and geometry – Principles of fibre forming polymers, parameters influencing the quality – glass transition temperature Introduction to solution spinning – salient features of solution spinning – principles of wet and dry spinning-Rheology of Wet& Dry Spinning – comparison – a brief note on dry jet wet spinning

UNIT - II

Melt spinning – detailed note on elements on melt spin equipment – various zones in extruders – design of extruder – types of extruders – characteristic feature of extruder – types of spin pack assemblies – construction of spinnerets – spinneret cleaning methods – Rheology of melt spinning – variables of melt spinning High speed spinning concept (integrated spin drop process, H4 S and FDY Process) - Stretching and drawing – drawing condition phenomena of necking – drawing behavior of thermoplastic polymer – influence of drawing on structure and property .

UNIT - III

Spin finishes – Objectives, – types of spin finish- application methods – problems of application – Ideal spin finish –– constitution of spin finish –problems in removal of spin finsh-Manufacture of Rayons - viscoserayons, manufacturing process– physical and chemical properties.- A brief note on Recent developments in modal fiber manufacturing (Lyocellfibre).

UNIT - IV

Manufacture of acrylics, mode acrylics, polypropylene fibers – properties and applications of acrylic and mode acrylic, PP Fibres. Micro fibres– methods of production – bi component technology – meltblown process properties and applications of micro fibres – problems in processing of micro fibres in weaving Nano fiber- methods of production –properties- applications

UNIT - V

Polyester manufacture – trans esterification, polycondensation – technical details - chemical reactions – side reactions – properties and applications Manufacture of Polyamide: Nylon – classification of polyamides – manufacture nylon 6, nylon 66, (manufacture monomers various routes for PET and nylon). Surface modification of Synthetic fibres: Need , polyester cause and effect – recent developments in polyesters like CDP, EDP, CFDP, APP etc

TEXT BOOKS:

• 1. Technology of Manufactured Fibres– Prof. V. B. Gupta, Chapmen and Hall, New York, 2004
• 2. Textile fibers – Dr. H. V. Srinivasmurthy, Wood Head Publishers, New Delhi, 2016.
• 3. Production of synthetic fibers A.A. Vaidya, Prentice Hall of India, New Delhi, 2005

REFERENCE BOOKS:

• 1. Manmade fibers – R.W. Moncrieff, Batterworth & Co., Manchester, 1980.
• 2. High performance Fibers – Textile Progress, Textile Institute, 1995.
• 3. Man Made Fibres- NCUTE Pilot Programme, IIT, New Delhi,2006