Results 31 to 40 of about 829,058 (269)
The Acetylation of Starch by Reactive Extrusion [PDF]
Starch - Stärke, 1998 Potato starch has been acetylated in a counter rotating twin screw extruder using vinylacetate and sodium hydroxide. The desired starch acetylation reaction is accompanied by an undesired parallel base catalysed hydrolysis reaction of vinylacetate and a consecutive hydrolysis reaction of the acetylated starch. Also deacetylation may occur.
Graaf, Robbert A. de +2 more
openaire +2 more sources
The reactive extrusion of thermoplastic polyurethane [PDF]
, 2006 The objective of this thesis was to increase the understanding of the reactive extrusion of thermoplastic polyurethane. Overall, several issues were identified: • Using a relative simple extrusion model, the reactive extrusion process can be described.
Verhoeven, Vincent Wilhelmus Andreas +1 more
core +19 more sources
Reactive processing of maleic anhydride-grafted ABS and its compatibilizing effect on PC/ABS blends [PDF]
Polímeros, 2021 Polymer compatibilizer agents are crucial for industrial materials development. Compatibilizer agents may be prepared by melt-grafting in the reactive extrusion process which is cheaper and environmentally friendly. Maleic anhydride-grafted acrylonitrile-
Erick Gabriel Ribeiro dos Anjos +4 more
doaj +1 more source
Combined application of extrusion and irradiation technologies: A strategy oriented for green and cost-effective chemistry [PDF]
BioResources, 2013 Reactive extrusion is an attractive green route for cost-effective polymer processing, which has the potential to enhance the commercial viability of biomass-derived materials.
Ali Ayoub +3 more
doaj
Agglomeration during reactive extrusion of particle-based biomass pellets [PDF]
EPJ Web of ConferencesCreating mechanically sound aggregates from powder or grain-like feedstocks is a fundamental challenge across industries. One example is the production of pellets from organic materials, like wood residues and cereal grains, for biofuel and animal feed ...
Benders Richard T. +4 more
doaj +1 more source
Investigation of the Reaction Kinetics of Poly(butylene terephthalate) and Epoxide Chain Extender
Macromolecular Materials and Engineering, 2023 Polyesters, such as poly (butylene terephthalate) (PBT), owe a rather low melt strength, which is considered as not beneficial for foaming. To overcome this issue, a typical attempt is the incorporation of chemical modifications—so‐called chain extenders
Andreas Himmelsbach +6 more
doaj +1 more source
Effect of process parameters on the properties of LDPE/sepiolite composites
PolímerosThis study examines the effect of processing parameters and reactive extrusion on the mechanical, thermal, morphological, and rheological properties of low-density polyethylene (LDPE) and sepiolite composites (LDPE/sepiolite: 95/5 wt/wt) produced by in ...
Priscila da Silva e Souza +2 more
doaj +1 more source
Esters of Cinnamic Acid as Green Plasticizers for Polylactide Formulations with Improved Ductility
Macromolecular Materials and Engineering, 2023 This study demonstrates the potential of different cinnamate esters, namely methyl trans‐cinnamate (MC), isobutyl cinnamate (IBC), allyl cinnamate (AC), and ethyl cinnamate (EC), as environmentally friendly plasticizers for polylactide (PLA). Plasticized
Alejandro Barandiaran +6 more
doaj +1 more source
The effect of pressure and temperature variations on the FEM prediction of deformation during extrusion [PDF]
, 2005 The extrusion process is complex, involving interaction between the process variables and the material’s high temperature properties and is typically conducted at relatively high temperatures because the lower flow stress of the material permits larger ...
Flitta, Isaac, Sheppard, Terry
core +1 more source
eXPRESS Polymer LettersScrew extruders as continuous flow reactors allow the synthesis of new polymers, preparation of polymer blends and composites, and modification or functionalization of commercially available polymers.
Krzysztof Formela, Barış Eyigöz
doaj +1 more source