Tensile properties of polypropylene fibers
Chapitre d'ouvrage scientifique
As soon as it appeared on the market, half a century ago, polypropylene appeared as a promising fiber-forming polymer but with some difficulties in processing due to a lack of control of its viscoelastic properties and in durability due to its low stability to oxidation. These difficulties were progressively resolved in the last decades by a sharper control of synthesis conditions, e.g., of stereoregularity and molar mass distribution, and by a better knowledge of oxidation and stabilization mechanisms. These research efforts allowed polypropylene to invade a very wide range of fibre applications, from disposable diapers to geotextiles.
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Article dans une revue avec comité de lectureLE GAC, Pierre Yves; ROUX, Gérard; DAVIES, Peter; FAYOLLE, Bruno; VERDU, Jacques (Elsevier, 2014)Water sorption has been studied gravimetrically for polychloroprene rubber samples, first at a fixed hygrometric ratio (98% HR) and several temperatures (25, 40, 60 and 80 °C) for samples of 1.8 and 3.8 mm thickness (Constant ...
Article dans une revue avec comité de lectureLE GAC, Pierre Yves; ROUX, Gérard; VERDU, Jacques; DAVIES, Peter; FAYOLLE, Bruno (Elsevier, 2014)Thermal oxidation in air at atmospheric pressure, in the 80-140 °C temperature range and in oxygen at 100 °C in the 0.02-3 MPa pressure range, of unvulcanized, unstabilized, unfilled polychloroprene (CR) has been characterized ...
Article dans une revue avec comité de lectureLE GAC, Pierre Yves; CELINA, Mathew C.; ROUX, Gérard; VERDU, Jacques; DAVIES, Peter; FAYOLLE, Bruno (Elsevier, 2016)The oxidative ageing in the range of 60 °C–140 °C of sulfur vulcanized polychloroprene has been studied by FTIR spectroscopy (double bond consumption), modulus changes and oxygen absorption measurements. Experiments were ...
Role of strain induced crystallization and oxidative crosslinking in fracture properties of rubbers Article dans une revue avec comité de lectureLE GAC, Pierre Yves; BROUDIN, Morgane; ROUX, Gérard; VERDU, Jacques; DAVIES, Peter; FAYOLLE, Bruno (Elsevier, 2014)Tensile properties and crack propagation properties, especially critical strain energy release rate in mode I, GIC, have been used to investigate fracture properties of elastomers and their relationships with microstructure. ...
New insights in polymer-biofuels interaction Avancées dans la compréhension des interactions polymères-biocarburants Article dans une revue avec comité de lectureRICHAUD, Emmanuel; DJOUANI, Fatma; FAYOLLE, Bruno; VERDU, Jacques; FLACONNECHE, Bruno (Institut Français du Pétrole, 2015)This paper deals with polymer-fuel interaction focusing on specific effects of biofuels on polyethylene (PE) in automotive applications. The practical objective is to develop a predictable approach for durability of ...