Results 221 to 230 of about 829,058 (269)

Reactive Extrusion of SAN/EPDM Blends

International Polymer Processing, 2004
Abstract The blending of styrene-acrylonitrile copolymer (SAN) and three different types of ethylene-propylene-diene terpolymer (EPDM) by reactive extrusion was studied and the free radical initiators: 2,5-dimethyl-2,5-di-(t-butylperoxy)hexane (Luperco 101 XL), 2,5-dimethyl-2,5-di-(t-butylperoxy)hexyne-3 (Luperco 130 XL), α,α′-di(t ...
Jelenčić, Jasenka, Jelčić, Želimir, Kratofil Krehula, Ljerka, Janović, Zvonimir, Hrnjak-Murgić, Zlata   +4 more
openaire   +3 more sources

Role of Mixing and Rheology in Reactive Extrusion

Industrial & Engineering Chemistry Research, 1994
To understand the performance of multicomponent reactions in extruders, the mixing mechanism in the extruder has to be understood. Viscosity and quantity differences between the components fed to the extruder considerably influence this mixing process. The extent of their influence on the mixing and therewith the reaction process was investigated with ...
Ganzeveld, K.J., Janssen, Leon P.B.M.
openaire   +2 more sources

Acrylated polyurethanes by reactive extrusion

Polymer Bulletin, 1994
A one-step acrylated polyurethanes prepolymers synthesis by reactive extrusion and bulk reaction is discussed. These oligomers are obtained by a simultaneous reaction of MDI, polycaprolactone and hydroxyethyl-acrylate. In order to obtain a high reaction conversion within the extruder, tin laurate catalyst was used at 90°C.
S. Coudray, J. P. Pascault, M. Taha
openaire   +1 more source

POLYLACTIC ACID MODIFIED BY REACTIVE EXTRUSION TECHNOLOGY

SGEM International Multidisciplinary Scientific GeoConference� EXPO Proceedings, 2023
In recent years there has been an increase in interest in biodegradable polymers. Biopolymers are upcoming competitors for the synthetic polymers with their profound attributes like eco-friendliness and biodegradability. They can be classified as natural biopolymers, chemically synthesized biopolymers, and microbial biopolymers.
Kalendová, Alena, Urbášková, Martina, Řezníček, Pavel, Měřínská, Dagmar, Hassouna, Fatima   +4 more
openaire   +2 more sources

Reactive Extrusion of Nonmigratory Active and Intelligent Packaging

ACS Applied Materials & Interfaces, 2023
The environmental and economic burden of food waste demands new preservation technologies to reduce the degradative actions of spoilage such as moisture, oxygen, and microorganisms. Direct food additives can help maintain product quality; however, the limited life span of these additives combined with consumer desire for "clean label" products has ...
Halle N. Redfearn, Matthew K. Warren, Julie M. Goddard   +2 more
openaire   +2 more sources

Starch esterification by reactive extrusion

Industrial Crops and Products, 2000
The objectives of this study were to synthesize starch-fatty acid esters via a reactive extrusion process and to determine the effects of level and chain length of the anhydrides used on the physical properties of the extrudates. Starch esters were synthesized by extruding 70% amylose starch with fatty acid anhydrides and sodium hydroxide (catalyst) in
V.D. Miladinov, M.A. Hanna
openaire   +1 more source

Reactive extrusion of zein with glyoxal

Journal of Applied Polymer Science, 2009
AbstractCross‐linked zein has been produced using glyoxal (GLY) as the cross‐linking reagent via reactive extrusion for the first time in a twin screw extruder using dilute sodium hydroxide as catalyst. Tri(ethylene glycol) was used as a plasticizer for various items.
Gordon W. Selling, Kristen Kruger Woods, Atanu Biswas, J. L. Willett   +3 more
openaire   +1 more source

Reactive Extrusion:  Toward Nanoblends

Macromolecules, 1999
By nanoblends, it is meant that the scale of dispersion of one polymer phase in the other is below 100 nm. A novel method was developed to prepare nanostructured blends (nanoblends) of polypropylene (PP) and polyamide-6 (PA-6) directly in a screw extruder. It consisted of polymerizing a monomer of PA-6, e-caprolactam (e-CL), in the matrix of PP.
Guo-Hua Hu, Hervé Cartier, Christopher Plummer   +2 more
openaire   +1 more source

Nanocomposites Prepared by Reactive Extrusion: Effect of the Polymer Reactive Groups

Macromolecular Reaction Engineering, 2013
AbstractThe interest in the development of polymer nanocomposites by reactive extrusion has been growing in the past years. This work aims to investigate the effect of the polymer reactive groups on chemical reaction extension and consequently, on the morphology of the nanocomposites. For that, two polymers, polypropylene grafted with maleic anhydride (
Oliveira, Manuel, Machado, A. V.
openaire   +2 more sources

Ram extrusion of reactive plastics

Russian Engineering Research, 2013
A system is proposed for the processing of highly filled thermosetting material. That system permits orientation of the fibrous filler over the length and cross section of the part. A wood-based thermosetting composite for the production of high-strength shaped components is also considered.
openaire   +1 more source