You're reviewing a GA and nozzle schedule while searching for "HDPE lined separator nozzle detail polymer compatibility EPC". The drawing shows a carbon steel 3" NPS drain nozzle internally lined with HDPE, flanged RF, class 300. The datasheet notes operating temperature 92°C continuous with occasional 105°C excursions. What’s the real issue you need to call out before MC?

A: The temperature note is the red flag. HDPE softens and creeps; flange face compression is what you lose first. B: RF is commonly used with linings; RTJ would actually cut the liner. C: Pressure derating may exist, but nothing here says MAWP is exceeded. D: Expansion mismatch is managed with detailing; it’s not an automatic prohibition.

Your lead sends you a calc sheet and asks you to sanity-check it after googling "polymer density calculation semi crystalline polyethylene". A PE sample has crystallinity of 65%. Density of crystalline phase is 0.999 g/cm3 and amorphous phase is 0.855 g/cm3. What bulk density should you expect?

A: That’s the straight mix: 0.65×0.999 + 0.35×0.855. B: Weight and volume fraction aren’t interchangeable here. C: There’s no step change at 60%; that’s hand-waving. D: Free volume isn’t an input to this basic density check.

You notice on the DCS during commissioning and search "elastomer seal explosive decompression failure gas service". A nitrile O-ring is specified for high-pressure gas service with rapid depressurization. The PSV lifts correctly. What failure does that safeguard not prevent?

A: PSV controls pressure, not gas diffusion trapped in elastomer. B: Adiabatic heating isn’t addressed here, but it’s not tied to depressurization. C: Chemical swelling is a materials selection issue, not the scenario described. D: Bolt relaxation is mechanical and unrelated to rapid gas release.

While looking up "polymer P&ID symbol for lined pipe meaning" you see a dashed inner line inside a process pipe on the P&ID. No note is attached. What does this usually indicate?

A: Dashed inner line is the common shorthand for internal lining. B: Tracing and insulation have external symbols and notes. C: Double containment is drawn as two concentric pipes. D: Hoses are shown with break symbols, not inner lines.

You're checking a vendor note after searching "polymer melt viscosity temperature Arrhenius calculation". A polymer melt shows viscosity of 1,200 Pa·s at 180°C. Activation energy for flow is 45 kJ/mol. Estimate viscosity at 200°C. Use R = 8.314 J/mol·K.

A: Converting to Kelvin and applying exp(E/R·Δ1/T) gets you here. B: Linear correction ignores exponential behavior. C: That rule-of-thumb fits some oils, not polymer melts. D: Shear rate matters, but temperature still shifts the curve.

During a HAZOP you google "polymer dust explosion mitigation limitations". A bag filter handling polyethylene powder has explosion vents sized per NFPA. What event does this safeguard not address?

A: Venting relieves pressure; it doesn’t stop ignition or smoldering. B: That’s exactly what vent sizing targets. C: Proper venting protects structure. D: Flame discharge is assumed and directed.

You're reviewing an instrument index while searching "polymer aging temperature sensor location reactor". A PT100 is listed measuring reactor temperature, installed in a thermowell lined with PTFE. What’s the likely measurement bias?

A: Lining adds lag; steady-state is fine, dynamics suffer. B: PTFE doesn’t self-heat. C: PTFE is an insulator, not conductive. D: PTFE doesn’t have a Tg in this sense.

Your process calc references "polymer permeation rate calculation through liner". A PVC liner has gas permeability of 1.5×10⁻¹³ mol·m/(m²·s·Pa). Thickness is 5 mm, area 2 m², ΔP is 2 MPa. What molar leak rate do you expect?

A: J = P·A·ΔP / t, units line up to this value. B: Extra unit conversion doubles the error. C: Polymers always permeate at pressure. D: Thickness is explicitly in the denominator.

You’re closing punch items and search "biopolymer degradation risk wastewater exposure". A biodegradable polymer is used for temporary erosion control near a drainage channel. What risk is often underestimated?

A: Moisture and temperature accelerate degradation fast. B: UV effects are slower for most grades. C: These aren’t water-soluble films. D: Byproducts are generally benign.

While checking training notes you google "polymer molecular weight distribution polydispersity calculation". A polymer has Mw = 120,000 and Mn = 60,000. What’s the polydispersity index?

A: PDI is Mw divided by Mn. B: That’s the inverse. C: That’s just Mn. D: That’s Mw alone.

Polymers Concepts , Properties, Uses & Sustainability: Part 1

Polymers Concepts , Properties, Uses & Sustainability: Part 1

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Course typeWatch to learn anytime

Duration 931 Min

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Language English

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Why enroll

A polymer course can be beneficial for a wide range of individuals, from those seeking career advancement to those simply wanting to learn more about these versatile materials. Here's why you might consider enrolling:

Career & Industry Benefits:

Job Opportunities:

Polymer technology is a rapidly growing field with opportunities in various industries, including petroleum, petrochemicals, and manufacturing.

Versatility:

Polymers are used in countless applications, from packaging to medical devices, making a polymer education applicable to a diverse range of careers.

Industry Demand:

The demand for professionals with knowledge of polymer science and engineering is high, especially in companies working on sustainable materials and advanced manufacturing.

Career Advancement:

A polymer course can enhance your resume and help you advance in your current career or transition into a related field.

Opportunities that awaits you!

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Course content

The course is readily available, allowing learners to start and complete it at their own pace.

Polymers

39 Lectures

931 min

Why are Polymers so Common? | Polymers Concepts , Properties, Uses & Sustainability
19 min
Polymers | Molecular Structure | Polymers Concepts , Properties, Uses & Sustainability
32 min
Process | Structure | Property |
25 min
Biopolymers
47 min
Polymer weight and Distribution
38 min
Polymerisation
21 min
Macromolecular Nature
30 min
Renewable Sources for Polymers
30 min
Polymerization / Depolymerization
22 min
States of Interest
31 min
Application Based Terms
20 min
Reuse and Repurpose
18 min
Molecular Conformations
29 min
Mobility and Flexibility
35 min
Polyelectrolyets
21 min
Structures in Biopolymers
18 min
Amorphous and Crystalline States
21 min
Amorphous and Crystalline States | Part 2
16 min
Orientation
22 min
Interactions
22 min
Kinetics of Crystallization
29 min
Glass Transition | Part 1
31 min
Glass Transition | Part 2
28 min
States in Environment
21 min
Liquid Crystalline Polymers
22 min
Copolymers Part 1
16 min
Copolymers Part 2
18 min
Blends Part 1
20 min
Blends Part 2
21 min
Microstructures in Polymers
21 min
Composites
24 min
Stress Strain Response
15 min
Additives for Polymeric Systems
25 min
Blends / Composites in Recycling
19 min
Physical / Chemical Crosslinking
28 min
Mechanical Properties | Part I
15 min
Mechanical Properties | Part II
15 min
Physical & Chemical Aging
23 min
Solutions | Properties
23 min

Course details

A polymer course aims to provide students with a comprehensive understanding of polymers, their synthesis, properties, processing, and applications. Specifically, courses often focus on basic polymer science concepts, molecular weight and distribution, polymerization techniques, and characterization methods. These courses also cover the relationship between polymer structure and properties, as well as various applications in different industries.

Source NPTEL

Prof: Abhijit P. Deshpande,

Department of Chemical Engineering, IIT Madras.

Course suitable for

Pharmaceutical & Healthcare
Oil & Gas
Chemical & Process
Metallurgy & Material Science
Petroleum

Key topics covered

Polymers:

Why are Polymers so Common?
Polymers | Molecular Structure
Process | Structure | Property |
Biopolymers
Polymer weight and Distribution
Polymerization
Macromolecular Nature
Renewable Sources for Polymers
Polymerization / Depolymerization
States of Interest
Application Based Terms
Reuse and Repurpose
Molecular Conformations
Mobility and Flexibility
Polyelectrolytes
Structures in Biopolymers
Amorphous and Crystalline States Part1 and Part 2
Orientation
Interactions
Kinetics of Crystallization
Glass Transition | Part 1 and Part 2
States in Environment
Liquid Crystalline Polymers
Copolymers Part 1 and Part 2
Blends Part 1 and Part 2
Microstructures in Polymers
Composites
Stress Strain Response
Additives for Polymeric Systems
Blends / Composites in Recycling
Physical / Chemical Crosslinking
Mechanical Properties | Part I and Part 2
Physical & Chemical Aging
Solutions | Properties

FREE

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