Quiz on Polymer Degradation and Biodegradation

Generally involves changes to the molecular weight of the polymer and typical property changes include reduced in ductility, embrittlement, color of change and cracking. This degradation refers to

• Hydrolisis

• Thermal

• Photo

• Oxidation

Refers to the techniques where a sample is heated in a controlled atmosphere at a defined heating rate whilst the sample's mass is measured?

• Differential scanning calorimetry

• Scanning Electron Spectroscopy

• Thermogravimetric analysis

• Galvanometric analysis

All of these are protections against thermal degradation, EXCEPT?

• Stabilizers

• Radical scavengers

• Oxidation control by inert environment

• Catalysts

The following are the mechanisms of photodegradation, EXCEPT?

• Side group elimination

• Adsorption of UV radiation

• Generation of free radicals

• Chain scission and crosslinking

Prevention and mitigation strategies for chemical degradation, EXCEPT

• Material selection

• Surface coatings

• Environment control

• Pigments additive

The output of anaerobic reaction EXCEPT

• O₂

• CO₂

• H₂S

• H₂O

These are the importance factors of biodegradation EXCEPT

• Environment Impart

• Versatility

• Sustainability

• Resource efficiency

Which of the following is a byproduct of biodegradation?

• Plastic

• Oxygen

• Methane

• Metal

What is the first stage of biodegradation?

• Biofragmentation

• Thermal reaction

• Assimilation

• Chemical reaction

What is composting?

• Recycling plastics

• Burning waste materials

• Transforming organic material into compost

• Natural breakdown of materials