Results 201 to 210 of about 7,741,947 (296)

Single Versus Double Screw Extrusion: Impact on Mechanical Performance and Crack Resistance for a Virgin, Recycled, and Blended Polypropylene

open access: yesPolymer Engineering &Science, EarlyView.
Schematic overview of the study approach and key findings. ABSTRACT To evaluate the influence of extrusion on material performance, three processing methods, single extrusion (1x Ex), double extrusion (2x Ex), and double screw compounding (C), were investigated for virgin polypropylene (vPP), recycled PP (rPP), and a blend containing 10% rPP (rPP10 ...
J. Pötzlbauer   +8 more
wiley   +1 more source

Modeling the Elastic Recovery of PET Bottles via a Free‐Blowing of Preforms Campaign

open access: yesPolymer Engineering &Science, EarlyView.
From free‐blown preforms to mechanical properties. ABSTRACT This study aims to quantify the elastic properties induced by biaxial stretching at different temperatures in order to simulate the complete process including the final elastic recovery. The elastic modulus is identified from geometric measurements obtained during free‐blowing experiments. PET
Yun‐Mei Luo, Luc Chevalier
wiley   +1 more source

Oxidative Stability and Rheological Features in Recycled Composites Based on Postconsumer Polypropylene and Antioxidant‐Loaded Silicas

open access: yesPolymer Engineering &Science, EarlyView.
Role of antioxidant supported on MCM‐41 and nano‐silica in enhancing oxidation induction time (OIT) and nucleation performance. ABSTRACT Plastic recycling efforts are hindered by the reduction of material properties in recyclates stemming from oxidative degradation of their polymeric chains.
Enrique Blázquez‐Blázquez   +4 more
wiley   +1 more source

Mechanically robust biochar‐modified polystyrene foam with enhanced flame retardancy using halogen‐free additives

open access: yesPolymer International, EarlyView.
Halogen‐free biocomposite polystyrene foams were fabricated via pilot‐scale supercritical CO2 extrusion using expandable graphite, melamine polyphosphate, biochar, and recycled polymer. The optimized formulation exhibited refined cellular morphology, enhanced flame retardancy (limiting oxygen index of 25%, rapid self‐extinguishing), and improved ...
Apurv Gaidhani   +4 more
wiley   +1 more source

Nontoxic, Eco-Friendly, Low-Cost Spinning of Submicrometric Fibers from Water-Soluble Polymers Using Protic Ionic Liquids. [PDF]

open access: yesACS Omega
Silva VD   +9 more
europepmc   +1 more source

Exploring the causes and impact of pediatric complicated mild traumatic brain injuries

open access: yesPM&R, EarlyView.
Abstract Background Traumatic brain injury (TBI) is a leading cause of morbidity and mortality in children, with mild TBI (mTBI) accounting for approximately 80% of cases. Complicated mTBI (c‐mTBI) is characterized by radiographic evidence of intracranial abnormalities and/or skull fractures.
Andrew D. Kramer   +6 more
wiley   +1 more source

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