TypeChapitres d'ouvrages scientifiques
This chapter presents a review of the role of several additives on POM processing (lubricating agents, processing aids, nucleating agents), performances (fillers, impact modifiers) and lifetime increase (antioxidants, compounds reacting with secondary reaction products such as acids scavengers, UV stabilizers and flame retardants) and aspect properties (pigments). It is tried to review existing models permitting to describe the efficiency of these additives in POM and predict the effect of other comparable additives that are not included in this review. Last, since POM compounding can be relatively complex and additives are scarcely used alone, it was also tried to report some side effects of these additives and the possible synergistic or antagonistic effects in the case of combinations of additives.
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RICHAUD, Emmanuel; GILORMINI, Pierre; COQUILLAT, Marie; VERDU, Jacques (Wiley, 2014)The hydrolysis of almost ideal networks based on macrodiols of average molar mass about 2 kg mol 1, with L¼18 ester groups per chain is studied. Tensile testing is used to evaluate the crosslink density through the statistical ...
Influence de la préoxydation d’un PEHD sur l’extraction des carbonyles et la croissance d’un biofilm PONS, C; FARCAS, F; RICHAUD, Emmanuel; FAYOLLE, Bruno; BOUCHEZ, T; MAZEAS, L (EDP Sciences, 2012)Les géomembranes en polyéthylène haute densité (PEHD) sont utilisées comme barrière d’étanchéité dans les Installations de Stockage de Déchets Non Dangereux (ISDND). Malgré les bonnes propriétés initiales du PEHD, face aux ...
Real-time quantitative analysis of volatile products generated during solid-state polypropylene thermal oxidation FRANCOIS-HEUDE, Alexandre; RICHAUD, Emmanuel; LEPROVOST, Julien; HENINGER, Michel; MESTDAGH, Helene; DESNOUX, Eric; COLIN, Xavier (ELSEVIER, 2013)Analysis of volatile organic compounds (VOCs) during PP thermal oxidation under three oxygen partial pressures (0%, 21% and 100% of atmospheric pressure) at 140 C was performed by proton transfer reaction coupled with ...
RICHAUD, Emmanuel; ARRIETA, Juan Sebastian; FAYOLLE, Bruno; NIZEYIMANA, Fidèle (Elsevier, 2016)The thermal oxidative ageing of vinyl ester and unsaturated polyester was studied at temperatures ranging from 120 to 160°C and oxygen pressures ranging from 0.02 to 2.0 MPa. The oxidation of both materials was shown to ...
BELLILI, Amar; DAVID, Nicolas; WANG, Qingxiao; GOUTILLE, Yannick; RICHAUD, Emmanuel (2012)This paper reports a study of mineral oil diffusion through a filled ethylene-vinyl acetate crosslinked polymer, together with some comparisons with aliphatic linear hydrocarbons. Permeation was monitored by classical ...