Extrusión

Extrusión

Unprecedented cell structure variation in multilayered alternating PS/PMMA foams
10/12/2021 - The objective of the present work was to study the cell structure variation in multilayered alternating polystyrene/poly(methyl methacrylate) (PS/PMMA) foams with the increase of the layer number....
Study and optimization of core-shell capsules produced by annular jet breaking coextrusion
- Oil-alginate capsules were produced by annular jet breaking coextrusion. Effects of alginate flow rate (30–50 mL/min), oil flow rate (4–18 mL/min), applied frequency (80–200 Hz), calcium...
In Situ Detection of Interfacial Flow Instabilities in Polymer Co-Extrusion Using Optical Coherence Tomography and Ultrasonic Techniques
27/08/2021 - Co-extrusion is a widely used processing technique for combining various polymers with different properties into a tailored multilayer product. Individual melt streams are combined in a die to form...
Optimization of Polysaccharide Hydrocolloid for the Development of Bioink with High Printability/Biocompatibility for Coextrusion 3D Bioprinting
28/05/2021 - Bioink is the main component of 3D bioprinting process and is crucial for the generation of sophisticated 3D structures through precise spatial control. Therefore, bioink’s core material must have...
Interfacial Phenomena in Multi-Micro-/Nanolayered Polymer Coextrusion: A Review of Fundamental and Engineering Aspects
28/01/2021 - The multilayer coextrusion process is known to be a reliable technique for the continuous fabrication of high?performance micro-/nanolayered polymeric products. Using laminar flow conditions to...
Development of Inorganic Particle-Filled Polypropylene/High Density Polyethylene Membranes via Multilayer Co-Extrusion and Stretching
19/01/2021 - This work is made to ascertain the effects of mineral fillers, namely calcium carbonate and talc, on the morphology and properties of multilayer polypropylene (PP)/high-density polyethylene (HDPE)...
Experimental investigation of flame retardancy and mechanical properties of APP/EG/TPU multilayer composites prepared by microlayer coextrusion technology
04/11/2020 - AbstractIn this paper, ammonium polyphosphate(APP)/expandable graphite(EG)/thermoplastic polyurethane (TPU) composites were prepared by microlayer coextrusion technology, APP and EG fillers had good...
Controlling interfacial instabilities in PP/EVOH coextruded multilayer films through the surface density of interfacial copolymers
18/04/2020 - Coextruded polypropylene/tie/ethylene vinyl alcohol/tie/polypropylene (PP/tie/EVOH/tie/PP) films often exhibit optical defects which appear as randomly distributed scattering objects, in the...
Bilayer biodegradable films prepared by co-extrusion film blowing: Mechanical performance, release kinetics of an antimicrobial agent and hydrolytic degradation
- Bilayer biodegradable, eco-friendly films were prepared by co-extrusion film blowing, coupling polylactic acid (PLA) and Bio-flex ® (BIO). Furthermore, in the PLA layer, carvacrol (CRV) was added...
Coextrusion and biaxial orientation of multi?microlayer films
- The 3?MMFs and 100?MMFs of LLDPE/EVOH/LLDPE before and after biaxial orientation and heat treatment were prepared by coextrusion process. The layers of the 100?MMFs after biaxial orientation...
Microlayer and nanolayer tubing and piping via layer multiplication coextrusion. I. Validation
15/11/2019 - Results of pure LDPE layered systems produced with layer multiplication in conjunction with a custom annular die at conditions of increasing number of multipliers and constant layer number with...
Microlayer and nanolayer tubing and piping via layer multiplication coextrusion. II. Rheologically mismatched systems
14/11/2019 - An advanced technology, presented in Part 1, was utilized with a custom annular die to produce structures having 9–129 layers. Two material systems were chosen to produce layer structures of...
The Production Possibility of the Antimicrobial Filaments by Co-Extrusion of the PLA Pellet with Chitosan Powder for FDM 3D Printing Technology
16/11/2019 - The last decades have witnessed a major advancement and development in three-dimensional (3D) printing technology. In the future, the trend’s utilization of 3D printing is expected to...
Improving the flame retardancy of polypropylene foam with piperazine pyrophosphate via multilayering coextrusion of film/foam composites
03/10/2019 - A series of 16?layer polypropylene/flame retardant (PP/FR) film/foam composite structures were produced by microlayer coextrusion. A highly branched PP was used in the foam layers to increase strain...
Fabrication of Surlyn ionomer fibers using a novel coextrusion approach and mechanical property characterization
29/07/2019 - We report the fabrication of poly (ethylene?co?methacrylic acid) sodium?neutralized ionomer (Surlyn 8940) fibers via a forced?assembly coextrusion and layer multiplication process with polystyrene...
Thermal and Mechanical Analysis of Polyethylene Homo-Composites Processed by Rotational Molding
20/03/2019 - This work is aimed at studying the suitability of ultra-high molecular weight polyethylene (UHMWPE) fibers for the production of polyethylene homo-composites processed by rotational molding....
Three?dimensional isothermal simulation of PP melt flow in laminating?multiplying elements based on the finite element method
21/01/2019 - The laminating?multiplying element (LME) with a high aspect ratio used in coextrusion process is highly desired since it has useful applications for the preparation of multilayer sheets or membranes....
Coextrusion of Multifunctional Smart Sensors
09/07/2018 - Three?dimensional (3D) printing of a piezoelectric sensor conventionally involves a minimum of three steps: fabrication of the sensor structure, electrode deposition to collect the generated charges,...
Nanostructuration effect on the mechanical properties of PMMA toughened by a triblock acrylate copolymer using multilayer coextrusion
01/08/2018 - Multilayer coextrusion was used to obtain nanolayered films of self-assembled commercial triblock copolymer poly(methyl methacrylate-b-butyl acrylate-b-methyl methacrylate) (MAM) confined by poly...
Breakup behavior of nanolayers in polymeric multilayer systems — Creation of nanosheets and nanodroplets
09/05/2018 - Multilayer films comprising polystyrene (PS)/polymethyl methalcrylate (PMMA) and PS/polycaprolatone (PCL) alternating nanolayers with varied layer thickness were fabricated by multilayer coextrusion....
A facile method to prepare polyvinylidene fluoride composite nanofibers with high photocatalytic activity via nanolayer coextrusion
01/02/2018 - The agglomeration of powder photocatalysts for water remediation can reduce the catalytic efficiency, and the difficulty to be recycled will cause the secondary pollution. A facile method suitable...