Solid state shear extrusion

Bilgili, E., Arastoopour, H., and Bernstein, B., Analysis of rubber particles produced by the solid state shear extrusion pulverization process. Rubber Chem. Technol., 73, 340, 2000. 

SMMA Styrene-methyl methacrylate block copolymer sPS Syndiotactic polystyrene S-S Simha and Somcynsky cell-hole theory SSE Single-screw extmder SSSE Solid-state shear extrusion TD Transverse direction TEM Transmission electron microscopy Tg Glass transition temperature THE Tetrahydrofuran TIBA fr -Isobutyl aluminum (°C) Melting temperature TMA fr -Methyl aluminum TMS Trimethylsilyl... 

Northwestern University has developed a process they refer to as solid-state shear extrusion pulverization. In this process, a twin-screw extruder is used to convert mixed plastics and scrap rubber into a imi-form fine powder, which can then be used in a variety of products. 

For low density, flexible high resilient and rigid PU foam post-consumer wastes, a modified solid state shear extrusion (SSSE) technique was applied for their pulverisation. The fine powder obtained can be nsed as a filler and/or reinforcing material for polymers and mineral products with improved mechanical properties [257]. 

Kliait, K. (1995) "Recycling of unsorted plastic waste by new solid-state shear extrusion... 

Shutov F, Arastoopour H and Ivanov G (1993) Recycling of pol5Uirethane waste foams using new pulverisation principle Solid State Shear Extrusion (SSSE), Cellular Polymers 2" Int Conf, Edinburgh, Paper 18. 

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