Maleic anhydride functionalization of polypropylene with suppressed
We present a novel method of synthesizing PP-g-MA while strongly suppressing MW reduction using solid-state shear pulverization (SSSP). By taking advantage of the relatively low temperature conditions associated with SSSP and with the use of azobisisobutyronitrile as radical initiator, significant MA grafting levels are …
Solid-state shear-extrusion pulverization of polymer …
Although still under development, solid-state shear pulverization (SSSP) has potential advantages over current powder production techniques. The SSSP process is continuous, making it potentially ...
Solid-State Shear Pulverization: A Comprehensive Study on …
Solid-state shear pulverization (SSSP) is a continuous and scalable processing technique that imposes mechanochemical changes in polymer-based materials. It has been shown to impart beneficial properties onto homopolymers or create copolymers and composites through continuous fragmentation and fusion. The unique technology employs cold …
Solid-state shear pulverization as a real-world process for …
Solid-state shear pulverization (SSSP) is an innovative processing technique that has proven to effectively disperse nanoscale structural entities to achieve compatibilized …
Processing‐structure‐property relationships in solid‐state …
Processing‐structure‐property relationships in solid‐state shear pulverization: Parametric study of specific energy. Philip J. Brunner. Department of …
Solid-State Shear Pulverization
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, …
Polymer Graphite Nanocomposites: Effective Dispersion …
Here we employ solid-state shear pulverization (SSSP) to produce polymer-graphite nanocomposites that are not subject to the thermodynamic/kinetic limitations associated with con-ventional processes. With SSSP, a modified twin-screw extruder applies shear and compressive forces to solid-state materials;
Green composites of polypropylene and eggshell: Effective …
Both steps add to the cost and reduce the green aspect of the composite. Here, green composite materials of PP with 5–40 wt% unmodified ES shards of several centimeters in size are directly processed using continuous, single-step solid-state shear pulverization (SSSP). Electron microscopy and particle size analysis show very good …
Maleic anhydride functionalization of polypropylene with suppressed
Here, we show that solid-state shear pulverization (SSSP), a low-temperature, continuous process with potential for high throughput, provides a route for overcoming the scientific challenge of suppressing MW reduction while yielding PP-g-MA in a commercially amenable manner. This process uses a twin-screw melt extruder …
Novel synthesis of branched polypropylene via solid-state shear
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 …
Maleic anhydride functionalization of polypropylene with suppressed
We present a novel method of synthesizing PP-g-MA while strongly suppressing MW reduction using solid-state shear pulverization (SSSP). By taking advantage of the relatively low temperature conditions associated with SSSP and with the use of azobisisobutyronitrile as radical initiator, significant MA grafting levels are achieved while …
Stabilization of Dispersed Phase to Static Coarsening: …
Solid-state shear pulverization (SSSP) using a batch-type kneader was performed at a temperature lower than the PP melting point in order to improve the dispersion of the LCNFs in the PP matrix ...
Ester Functionalization of Polypropylene via Controlled Decomposition
We present a novel method of functionalizing PP using benzoyl peroxide (BPO) alone by a process called solid-state shear pulverization (SSSP), resulting in ester functional groups (benzoates) grafted at high yield onto PP. Ester functionalized PP (PP-g-ES) is synthesized with limited MW reduction because SSSP is done at sufficiently low T to ...
Effects of Polymer Properties on Solid-State Shear …
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 …
Processing-structure-property relationships in solid-state shear
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 ...
Solid-State Shear Pulverization | Klementina Khait, Stephen …
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 …
Well-mixed blends of HDPE and ultrahigh
Here, we present solid-state shear pulverization (SSSP) as a mild, continuous, and simple approach for achieving effective and intimate mixing in UHMWPE/HDPE blends. These SSSP blends are easily processed by post-SSSP melt extrusion; for an SSSP blend with 50 wt% UHMWPE, we observe more than a factor of 1000 increase in viscosity at a …
Solid-State Shear Pulverization: A Comprehensive Study on …
Solid-state shear pulverization (SSSP) is a continuous and scalable processing technique that imposes mechanochemical changes in polymer-based materials. It has been shown …
Crystallinity and Property Enhancements in Neat Polylactic …
In this communication, solid-state/melt extrusion (SSME) is introduced as a novel technique that combines solid-state shear pulverization (SSSP) and conventional twin screw extrusion (TSE) in a … Expand. 11. Save. Poly(lactic acid) crystallization. S. Saeidlou M. Huneault Hongbo Li Chul B. Park. Materials Science.
Polylactic Acid Chemical ing Assisted by Solid …
In previous studies, an alternative processing method called solid-state shear pul-verization (SSSP) has shown promising results in increasing the crystallization kinetics of PLA [25–27], which is considered key for better control of the cell structure [2]. ... Solid-State Shear Pulverization and Cryogenic Milling ...
Achievement of quasi-nanostructured polymer blends by solid-state shear
Nanoblends, in which dispersed-phase domains exhibit length scales of order 100 nm or less, are made using a continuous, industrially scalable, mechanical process called solid-state shear pulverization (SSSP).An 80/20 wt% polystyrene (PS)/poly(methyl methacrylate) (PMMA) blend processed by SSSP and consolidated by platen pressing, …
Solid-state shear pulverization as effective treatment for …
Solid-state shear pulverization (SSSP) using a batch-type kneader was performed at a temperature lower than the PP melting point in order to improve the …
Low-Temperature Compounding of Flax Fibers with …
distributed natural fibers, preferably at the level of elementary fibers. Solid-state shear pulverization (SSSP) is a developing technique for processing homopolymers, polymer blends, and polymer composites and nanocomposites that uses a modified TSE in a chilled, solid-state setting [38-46]. It applies shear and
Ester functionalization of polypropylene via controlled …
We present a novel method of functionalizing PP using benzoyl peroxide (BPO) alone by a process called solid-state shear pulverization (SSSP), resulting in ester functional groups (benzoates) grafted at high yield onto PP. Ester functionalized PP (PP-g-ES) is synthesized with limited MW reduction because SSSP is done at sufficiently low T to ...
Effects of Polymer Properties on Solid-State Shear …
rotation.9 Solid-state shear pulverization (SSSP) is one alternative TSE-based technique that can tailor the macro-, micro-, and nanoscale structures of polymeric materials to …
Mechanochemical modification of crosslinked …
This study investigates solid-state shear pulverization (SSSP) as a continuous, commercially viable mechanochemical processing technique to initiate the decrosslinking of XLLDPE for mechanical …
Solid‐state shear pulverization of post‐industrial ultra‐high …
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 ...
Residence Time Distribution and Specific Mechanical Energy in Solid …
Solid‐state shear pulverization (SSSP) is a continuous polymer processing methodology based on a modified twin‐screw extruder. The unique application of low barrel temperatures and ...
Processing-structure-property relationships in solid-state shear
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. A systematic parametric study of the SSSP technique is conducted to elucidate the detailed mechanism of the …