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; LE GAC, Pierre Yves; VERDU, Jacques; LE GAC, Pierre Yves (Elsevier, 2014)Thermal aging of thin ﬁlms of unstabilized polydicyclopentadiene (pDCPD) at several temperatures ranging from 120 to 30 C was investigated by means of carbonyl build up by FTIR with ammonia derivatization, double bond ...
RICHAUD, Emmanuel; FAYOLLE, Bruno; VERDU, Jacques (Elsevier, 2011)This article deals with polypropylene stabilization by hindered 2,6-di-tert-butylphenols. Two aspects are mainly considered: the influence of stabilizer structure, of its concentration and temperature on induction period ...
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 ...
RICHAUD, Emmanuel; FAYOLLE, Bruno; VERDU, Jacques (Woodhead Publishing Series - Elsevier, 2009)As soon as it appeared on the market, one half century ago, polypropylene (PP) appeared as a promising fibre-forming polymer but with some difficulties in processing due to a lack of control of its viscoelastic properties ...
OKAMBA-DIOGO, Octavie; RICHAUD, Emmanuel; VERDU, Jacques; FERNAGUT, François; GUILMENT, Jean; FAYOLLE, Bruno (Elsevier, 2014)The present article reports a study of thermal oxidation of unstabilized polyamide 11 films at several temperatures (90–165 °C) under atmospheric pressure and under various oxygen pressures (up to 1.6 MPa) at 110 °C. The ...