Exam

Exam

GATE: POLYMER SCIENCE and ENGINEERING Syllabus

XE-F Polymer Science and Engineering

Section 1: Chemistry of high polymers

Monomers, functionality, degree of polymerizations, classification of polymers, glass

transition, melting transition, criteria for rubberiness, polymerization methods:

addition and condensation; their kinetics, metallocene polymers and other newer

techniques of polymerization, copolymerization, monomer reactivity ratios and its

significance, kinetics, different copolymers, random, alternating, azeotropic

copolymerization, block and graft copolymers, techniques for copolymerization-
bulk, solution, suspension, emulsion.

Section 2: Polymer Characterization

Solubility and swelling, concept of average molecular weight, determination of

number average, weight average, viscosity average and Z-average molecular

weights, polymer crystallinity, analysis of polymers using IR, XRD, thermal (DSC,

DMTA, TGA), microscopic (optical and electronic) techniques.

Section 3: Synthesis and properties

Commodity and general purpose thermoplastics: PE, PP, PS, PVC, Polyesters,

Acrylic, PU polymers. Engineering Plastics: Nylon, PC, PBT, PSU, PPO, ABS,

Fluoropolymers Thermosetting polymers: PF, MF, UF, Epoxy, Unsaturated polyester,

Alkyds. Natural and synthetic rubbers: Recovery of NR hydrocarbon from latex, SBR,

Nitrile, CR, CSM, EPDM, IIR, BR, Silicone, TPE.

Section 4: Polymer blends and composites

Difference between blends and composites, their significance, choice of polymers

for blending, blend miscibility-miscible and immiscible blends, thermodynamics,

phase morphology, polymer alloys, polymer eutectics, plastic-plastic, rubber-plastic

and rubber-rubber blends, FRP, particulate, long and short fibre reinforced

composites.

Section 5: Polymer Technology

Polymer compounding-need and significance, different compounding ingredients

for rubber and plastics, cross-linking and vulcanization, vulcanization kinetics.

Section 6: Polymer rheology

Flow of Newtonian and non-Newtonian fluids, different flow equations,

dependence of shear modulus on temperature, molecular/segmental

deformations at different zones and transitions. Measurements of rheological

parameters by capillary rotating, parallel plate, cone-plate rheometer. Visco-
elasticity-creep and stress relaxations, mechanical models, control of rheological

characteristics through compounding, rubber curing in parallel plate viscometer,

ODR and MDR.

Section 7: Polymer processing

Compression molding, transfer molding, injection molding, blow molding, reaction

injection molding, extrusion, pultrusion, calendaring, rotational molding,

thermoforming, rubber processing in two-roll mill, internal mixer.

Section 8: Polymer testing

Mechanical-static and dynamic tensile, flexural, compressive, abrasion, endurance,

fatigue, hardness, tear, resilience, impact, toughness. Conductivity-thermal and

electrical, dielectric constant, dissipation factor, power factor, electric resistance,

surface resistivity, volume resistivity, swelling, ageing resistance, environmental stress

cracking resistance.

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