The material selection platform
Plastics & Elastomers
The material selection platform
Plastics & Elastomers
Online Course

Troubleshooting Polyolefin Grafting via Reactive Extrusion

1 Days left to register

Tuesday Sep 24, 2019

Achieve high quality grafted polyolefin products using reaction extrusion by understanding free radical chemistry, PE & PP reactions, & design of the extruder.

Kenneth Russell will help you in controlling grafting reaction, interaction b/w components, optimize compounding to ensure that the grafted monomer is fully bound to the polymer. Tips to troubleshoot challenges (black specks, gel defects…) will also be shared.

Read the full Course Outline

Kenneth Russel Presented By:
Kenneth W Russell

Length: 90 min

Course Type: Technology
Level: Advanced

Next Session: Sep 24, 2019
10:00 a.m. (New York City)
4:00 p.m. (Paris)

Check your local time

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Why should you attend?

To achieve high quality grafted polyolefin products, you need to ensure that the grafted monomer is fully bound to the polymer. This can be tricky as several competing reactions are usually present! Also, the same free radical chemistry in a reactive extruder gives different results with PE and PP. 

To understand how to control the chemistry & process and troubleshoot recurring issues, join this course and:

1. Achieve desired quality by understanding the mechanism of grafting & free radical chemistry in a reactive extruder and how PP differs from PE during reaction.

2. Optimize your compounding process by understanding the interactions b/w components, type of mixing required, how to control melt temp., screw designs..

3. Troubleshoot efficiently current & future challenges (black specks, gel defects, varying melt viscosities, high volatiles...) with practical tips from Kenneth Russell.

Boast about your Skills- Get a participation certificate on joining the Live Online Course !
Troubleshooting Polyolefin Grafting via Reactive Extrusion

Who should attend?

Engineers and lead operators (polymer converters) producing / entering into production of grafted polyolefin products using reactive extrusion. 

Course Outline

  1. Reactive extrusion process - Overview
    1. How polypropylene differs from polyethylene during reaction?
    2. Reactive Extrusion in a Twin-Screw Extruder – advantages, disadvantages

  2. Feeding of liquids
    1. How to adjust pressure?
    2. Positive displacement pump

  3. Understanding Free Radical Chemistry
    1. Typical peroxides used (Dicumyl peroxide, Di-tert-butyl peroxide…)
    2. How to choose which peroxide is best for the process?
    3. Safe handling of peroxides
    4. Alternate initiators/catalysts
      1. AIBN
      2. UV

  4. Highlights on the process of Screw Design Considerations

  5. Reactions with Polypropylene
    1. Understanding the process flow
    2. Controlled rheology of PP/Grafting of MaH to PP
    3. How to measure MAH content?
    4. How to troubleshoot quality issues?

  6. Reactions with Polyethylene
    1. Understanding the process flow & Crosslinking
    2. Differences between HDPE/LLDPE and LDPE
    3. Silane grafting process
    4. Twin-screw grafting

  7. Grafting of Maleic Anhydride to PP
    1. Controlling MAH content
    2. Is the MAH fully bound?
    3. Controlling melt viscosity for PP

  8. Grafting Maleic Anhydride to PE
    1. Generation of gels and specs
    2. Controlling melt viscosity for PE
    3. Safety concerns with Maleic Anhydride

  9. 30 Mins Q&A Session- Ask your questions directly to the expert !

Have a query ? Email us for any help

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Members Reviews

Excellent! Learnt different ways for dosing POX.

Frank H. , from Yparex BV

Very good course on polyolefin grafting using reactive extrusion

Ted B. , from Midland Compounding & Consulting

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