Services

1. Seminars and lectures on Structure properties relations of Plastics
2. Root cause analysis of failure of Plastics
3. Development of conceptual knowledge on structure properties relations of Plastics
4. Prediction of properties and life time of applications
5. Investigation of failure mechanisms of plastics

Seminars and lectures on Structure properties of Plastics

• Mechanical properties of Plastics
  • The tensile test : Understanding stiffness deformation and its time
    dependence
  • Toughness / Strength and its mechanisms
    • The role of surface energy in Slow Crack Growth and Environmental stress Cracking + practical examples
    • The role of surface energy in rapid failure processes / impact + the case of rubber toughening in PP
• Optical properties of Plastics
  • Physics of light scattering
    • Rayleigh scattering
    • Mie Scattering
    • Weak Phase object approximation to surface scattering
    • Spherulitic scattering and the role of optical anisotropy
  • Bulk scattering and scattering power
  • Surface scattering
  • Gloss, Haze and Clarity/Transparency
  • Examples from polymer practice

Root Cause analysis failure in Plastics

• Microscopic mechanisms Crazing, shearing, fibrillation, crack growth
• Molecular and morphological causes
• Measuring the resistance against failure / Fracture Mechanics / surface energy
•  Performing the necessary measurements to establish root cause
• Final diagnosis and report

Development of conceptual knowledge on structure properties relations of Plastics

• Strain Hardening a universal predictor of time dependence in pipes
• Pipe properties and time dependent failure
• Toughness concepts in blends & compounds
• The role of disentanglement in failure of plastics
• Alternative methods to measure surface energy

Prediction of life time and properties

• When does brittle failure takes over from yielding in long term pipe response
• Optimal morphology for good impact in ICP’s
• Prediction of Haze and Gloss from thin surfaces