Concept

Mixing (process engineering)

Publications associées (37)

Phase Separation and Gelation of Epoxy Resin/Hyperbranched Polymer Blends

The structural buildup during reticulation of thermoset systems containing reactive modifiers can strongly influence the final properties of such blends. This was studied by considering the rheological behavior during cure of an epoxy/amine thermoset syste ...

2002

Electron diffraction and high resolution transmission electron microscopy in the characterization of calcium phosphate precipitation from aqueous solutions under biomineralization conditions

Philippe Buffat, Elena Suvorova Buffat

Calcium phosphate precipitation obtained from aqueous solutions at room and body temperatures and pH 5.5-7.5 were investigated by high-resolution transmission electron microscopy (HRTEM), transmission electron diffraction, scanning electron microscopy (SEM ...

2001

Development of a continuously operated reactor for the limited hydrolysis of whey protein by trypsin

Albert Renken, Antoine Margot

A continuously operated reactor was developed for the limited hydrolysis of whey protein using sol. trypsin. It consisted of a stirred tank followed by a tubular device. A stirred tank was used because it allows pH control to be achieved more easily. The t ...

1998

Study of micromixing in polymerization reactions and its application in experimental copolymerization

Albert Renken, Thierry Meyer

The better understanding of the degree of mixing in highly viscous media is of crucial interest with respect to the product quality during a polymn. reaction. A special reactor composed of a loop tubular reactor followed by a tubular part, all being filled ...

American Institute of Chemical Engineers1994

Reaction engineering studies on the copolymerization of styrene with maleic anhydride in a loop reactor

Albert Renken, Thierry Meyer

The heat-induced, solvent-free copolymn. of styrene (I) with maleic anhydride (II) was studied on a pilot scale in a loop reactor coupled to a tube reactor. Under conditions required for the manuf. of alternating copolymers (stoichiometric ratio of I to II ...

1994

Process development for the optical resolution of phenylalanine by means of chymotrypsin in a liquid-liquid-solid three-phase reaction system

Albert Renken, Simon Crelier

The stereospecific hydrolysis of phenylalanine esters by chymotrypsin can avantageously be undertaken in aq.-org. 2-phase systems. The partitioning of the deprotonated form of the substrate changes the pH characteristics of the reaction system drastically. ...

Elsevier1992

Interpretation of mixing effects in a tubular recycle polymerization reactor packed with static mixers

Albert Renken, Thierry Meyer

Results presented in previous papers on partial segregation of a chain-transfer agent feedstream in a tubular recycle reactor packed with static mixers for the soln. polymn. of styrene are interpreted with the segregated feed model (SFM). Exptl. results ar ...

VCH1992

Enzymic reaction in a three-phase liquid-liquid-solid catalyst system. Application to the optical resolution of phenylalanine

Albert Renken, Simon Crelier

The development of a phasic system for the enzymic resoln. of racemic phenylalanine (I) up to benchtop pilot plant scale is described. The principle is based upon the hydrolysis of racemic Pr ester of I with immobilized a-chymotrypsin (II) in which only th ...

1991

Motionless mixers for the design of multitubular polymerization reactors

Albert Renken

Exptl. investigations of the thermal bulk polymn. of styrene (I) in pilot plants of different sizes were done. Each pilot plant consisted of a tubular recycle reactor connected in series with a tubular reactor, both completely filled with Sulzer motionless ...

1990

Process development for the hydrolysis of lactose in whey by immobilized lactase of Aspergillus oryzae

Albert Renken

Immobilized lactose of A. oryzae was used for the hydrolysis of lactose in partially deproteinized whey in a fluidized-bed reactor packed with motionless mixers. The lactase was immobilized on chitosan-coated silica gel particles by means of glutaraldehyde ...

1988

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