Subject Code & Name: PT25301 – Polymer Physics
Regulation: R-2025
Semester: III (Third Semester)
Branch: B.Tech. Plastics Technology (Plastics)
Credits / L-T-P: 3 Credits | L-T-P: 3-0-0
Course Objectives
- To understand the Physical and conformational properties of polymeric materials.
- To study Molecular arrangement in polymers and their orientation under the influence of stress.
- To study the Solubility behavior of polymers.
Full Unit-wise Syllabus
Unit I – Fundamentals of polymer physics
Potential energy and conformational energy of molecules - conformations and configurations, Tacticity, isomeric states and isomerism in polymers, stereoisomerism, geometric isomerism - Random coils and average end to end distance - (Derivation only).
Activities: Study different polymer conformations and configurations, including tacticity and isomerism concepts. Illustrate examples of stereoisomerism and geometric isomerism in polymer structures.
Unit II – Thermodynamic properties
Laws of Thermodynamics - Freely jointed and freely rotating chain models - Entropy and enthalpy Energy driven and entropy driven elasticity - Thermo elasticity -Thermodynamic treatment - entropic and energetic contributions (Derivation only).
Activities: Review the Laws of Thermodynamics and their application in polymer systems. Understand chain models like freely jointed and freely rotating chains in polymer behavior.
Unit III – Polymer Crystal Formation
Amorphous State - Transition temperatures- Glass transition temperature Theory- Factors influencing glass transition Temperature- Crystalline State - polymorphism – Polymer single crystals, lamellae, spherulites – Crystallinity -factors affecting crystallinity -X-ray diffraction (XRD).
Activities: Interpretation of thermograms and Gel Permeation Chromatography (GPC) data for molecular weight, crystallinity – XRD and Differential Scanning Calorimetry (DSC).
Unit IV – Chain Orientation
Chain orientation - Concept of chain orientation - orientation in amorphous and crystalline polymers - Uniaxial and biaxial orientation practical significance – Orientation processes: spinning Process – Optical Properties of polymers – Birefringence, Haze, Transparency.
Activities: Understand the concept of chain orientation in amorphous and crystalline polymers. Differentiate between uniaxial and biaxial orientation with practical examples.
Unit V – Polymer Solutions
Polymer solutions - Terms and definitions, types of solutions - Hildebrand approach, Flory Huggins theory - Thermodynamic view of miscibility, upper critical solution temperature (UCST), lower critical solution temperature (LCST) - solubility parameter, determination of solubility parameter of polymers - theta conditions.
Activities: Analyze phase behavior concepts such as UCST and LCST, Relate solubility parameter and theta conditions to polymer solution behavior.
Course Outcomes (COs)
- CO1: Understand molecular arrangement in polymers.
- CO2: Demonstrate the orientation processes in polymer.
- CO3: Demonstrate knowledge in solubility behavior of polymers.
Assessment Pattern (Quick Note)
- Weightage: Continuous Assessment 40% | End Semester Examinations 60%
- Internal methodology: Assessment I (35%), Assessment II (35%), Activities (30%)
Source: Official Anna University – B.Tech. Plastics Technology R-2025 Curriculum
Last Updated: September 2026
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