Solid-state shear pulverization presents a continuous, mild, and scalable approach for preparing well-mixed UHMWPE/HDPE blends that can be easily processed by post-SSSP melt extrusion and demonstrate major improvements in impact strength.
Solid-state shear pulverization (SSSP) is a novel mechanical process that uses a modified twin-screw extruder with cooling zones to maintain the polymer in the solid state during processing.
A novel process, solid-state shear pulverization (S3P), was developed at Northwestern University to recycle single or commingled post- or pre-consumer polymeric waste without sorting by type or color.
Solid-state shear pulverization as effective treatment for dispersing lignocellulose nanofibers in polypropylene composites. Cellulose 2014, 21 (3), 1573-1580. …
We describe the discovery of a novel approach to prepare LCB PP by subjecting linear PP to solid-state shear pulverization (SSSP) with benzoyl peroxide (BPO) as the lone additive. Depending on BPO content, LCB PP can be formed by radical reactions during SSSP or post-SSSP melt extrusion. Using shear rheology, we demonstrated that LCB PP was ...
Solid-state shear pulverization presents a continuous, mild, and scalable approach for preparing well-mixed UHMWPE/HDPE blends that can be easily processed by post-SSSP …
Solid-State Shear Pulverization (S 3 P) is a new polymer processing technology capable of efficient mixing blends with different component viscosities (which are unprocessable by conventional melt extrusion due to the phase separation).
A novel process, solid-state shear pulverization (S3P), was developed at Northwestern University to recycle single or commingled post- or pre-consumer polymeric waste without sorting by type or color.
Solid-state shear pulverization (SSSP) is an alternative polymer processing technique based on twin-screw extrusion with a continuous cooling system. In SSSP, low-temperature mechanochemistry modifies the macromolecular architecture and morphology, which in turn leads to physical property changes in the material.
Department of Chemical Engineering and Polymer Technology Center and Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208-3120
Solid-state shear pulverization (SSSP) is a unique processing technique for mechanochemical modification of polymers, compatibilization of polymer blends, and exfoliation and dispersion of fillers in polymer nanocomposites.
An apparatus for solid state shear extrusion pulverization of a polymeric material comprising an elongated hollow barrel having a feed zone, a heating zone adjacent to the feed zone, a powder formation zone adjacent to the heating zone, and a powder discharge zone adjacent to the powder formation zone. At least one screw is housed within the elongated hollow barrel.
Called Solid-State Shear Pulverization (S3P), this innovative process produces polymeric powders with unique physical properties not found in the output of conventional size-reduction methods….
Solid-State Shear Pulverization is an innovative process that produces polymeric powders with unique physical properties not found in the output of conventional size-reduction methods. This technology has profound implications for both the creation of new polymer blends and recycling of plastic and rubber waste. Illustrated with 60 photographs, micrographs, diagrams and other …
A chemical ing process of polylactic acid (PLA) was developed via the solid-state processing methods of solid-state shear pulverization (SSSP) and cryogenic milling. Based on the ability of solid-state processing to enhance the crystallization kinetics of PLA, chemical ing agents (CFA) are first compounded before ing via compression ...
This study investigates solid-state shear pulverization (SSSP) as a continuous, commercially viable mechanochemical processing technique to initiate the decrosslinking of XLLDPE for mechanical recycling.
Solid-state shear pulverization as effective treatment for dispersing lignocellulose nanofibers in polypropylene composites. Cellulose 2014, 21 (3), 1573-1580. https://doi/10.1007/s10570-014-0195-5
Called Solid-State Shear Pulverization (S3P), this innovative process produces polymeric powders with unique physical properties not found in the output of conventional size-reduction methods…. This technology, which utilizes a pulverizer based on a modified co-rotating twin-screw extruder…, has profound implications for both the creation ...
Solid-State Shear Pulverization (S 3 P) is a new polymer processing technology capable of efficient mixing blends with different component viscosities (which are …
Solid-state shear pulverization (SSSP) is a modified twin screw extrusion technique that can process high melt-viscosity materials in effective, continuous, and sustainable ways.
Solid-state shear pulverization (SSSP) is a unique processing technique for mechanochemical modification of polymers, compatibilization of polymer blends, and …
A nonconventional pulverization process known as solid-state shear extrusion (SSSE) is being developed for recycling commingled, unsorted, pre- and post-consumer plastic waste. The process uses a specially designed co-rotating twin-screw extruder with integrated heating and cooling. It is currently in operation at BIRL Poly-mer Reclamation ...
Self‐compatibilization of polymer blends via novel solid‐state shear extrusion pulverization. Francis Mirabella. 1997, Journal of Applied Polymer Science. See full PDF download Download PDF.
The scrap feedstock M is subjected to solid state shear pulverization in the pulverizer 10 in a once-through operation by rotation of the twin-screws 14 in the same directions by motor 18 so as to transport the feedstock M along the length of the screws 14 and subject the feedstock M to temperature and pressure conditions (for a given feedstock ...
A process and apparatus for pulverization of thermosetting, crosslinked thermoplastic and natural polymeric materials by applying normal and shear stresses by oppositely rotating meshing conical screws sufficient to form fine powder. The process may be conducted at relatively low temperatures, and in the case of many materials, at ambient or near ambient temperature and …
Called Solid-State Shear Pulverization (S3P), this innovative process produces polymeric powders with unique physical properties not found in the output of conventional size-reduction methods….
Solid-state shear pulverization presents a continuous, mild, and scalable approach for preparing well-mixed UHMWPE/HDPE blends that can be easily processed by post-SSSP melt extrusion and demonstrate major improvements in impact strength. By preparing UHMWPE/HDPE blends via SSSP, we were able to circumvent processing constraints …
Solid-state shear pulverization (SSSP) is an alternative polymer processing technique based on twin-screw extrusion with a continuous cooling system. In SSSP, low-temperature mechanochemistry modifies the macromolecular architecture and morphology, which in turn leads to physical property changes in the material. While a wide range of homopolymers, polymer …
This study investigates solid-state shear pulverization (SSSP) as a continuous, commercially viable mechanochemical processing technique to initiate the decrosslinking of XLLDPE for mechanical recycling.
Solid-state shear pulverization (SSSP) is an alternative polymer processing technique based on twin-screw extrusion with a continuous cooling system. In SSSP, low …
Solid-state shear pulverization (SSSP) is a modified twin screw extrusion technique that can process high melt-viscosity materials in effective, continuous, and sustainable ways. Mechanical recycling of post-industrial ultrahigh molecular weight polyethylene (UHMWPE) is facilitated by the SSSP process, which can be tuned to affect the particle ...
Polymer processing techniques make and shape many of the products we use in our daily lives. Solid-state shear pulverization (SSSP) is a novel extrusion technique that has been shown to produce…
