What if the shape of a polymer chain could improve how it performs? TPPO investigates how cyclic polyolefins – polymers with no chain ends – can be used to tailor the flow and mechanical properties of industrial resins. The project builds on recent advances in catalysis and aims to develop new dopants that improve processability and end-use behaviour of key polyolefin materials.
From catalyst to application
TPPO explores a two-step approach to producing cyclic polyolefins. First, a tungsten-based catalyst is used to polymerise alkynes into cyclic polyalkynes. In a second step, hydrogenation transforms these into target polyolefin structures. The project focuses on two classes of materials:
- Cyclic isotactic polypropylene, using chiral hydrogenation catalysts
- Cyclic ethene/α-olefin copolymers, from LLDPE to elastomeric grades
Why topology matters
Unlike linear polymers, cyclic polymers have no chain ends – which affects how they flow, crystallise and blend. TPPO studies the rheological behaviour of both pure cyclic samples and blends with linear analogues. These insights could open the door to new tuning strategies for polymer processing and product design.
Part of DPI’s pre-competitive research community
TPPO is embedded in DPI’s long-standing expertise in polyolefins. The project brings together advanced catalysis and fundamental polymer physics to support material innovation in a pre-competitive, collaborative and industry-driven setting.
Pre-competitive, collaborative and industry-driven
Topological Performance Polyolefins (TPPO) is part of DPI’s Enabling Tools & Technologies programme. As with all DPI initiatives, this project:
- Works across institutions and disciplines
- Shares pre-competitive knowledge
- Stays focused on industrial applicability
Boost your R&D
By joining the DPI community, you gain access to world-leading polymer research and you help shape it. Curious how this project fits your innovation roadmap? Let’s talk.
Claude Bostoen
Business development and programme manager
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