Electrospun nanofibers of a copolymer consisting of polyvinylalcohol that has been crosslinked with an inorganic polymer containing phosphorus, oxygen and nitrogen only.


Group ‘reaction and resistance to fire’ (R2Fire) - Unité Matériaux et Transformations (UMET) - UMR/CNRS 8207
École Nationale Supérieure de Chimie de Lille (ENSCL)
Cité Scientifique - Av. Mendeleïev - CS 90108
59652 Villeneuve d’ Ascq Cedex - France
http://www.ensc-lille.fr/ and http://umet.univ-lille1.fr/

Tel : +33 (0)3 20 43 48 88
Fax : +33 (0)3 20 43 65 84

⇓Expertise: The main topic of the group R2Fire is reaction and resistance to fire of polymeric materials. Different approaches are considered: intumescence, ceramic-like formation and nanocomposites. It has expertise in:

• processing of thermoplastic and composites
• fire testing and development of novel tests at the lab scale (reaction and resistance to fire)
• physico-chemistry of degradation of flame retarded materials including thermogravimetry,
 differential calorimetry, kinetic of degradation (modeling and simulation),
• rheology in complex media of polymeric materials,
• characterization of polymers and degraded materials using techniques such as solid state NMR,
 FTIR, Raman spectroscopy, XPS, ESR, X-ray diffraction, and optical and electronic
• gas analysis of evolved gases from burning materials.

⇓Equipment: • Processing
 - Twin screw extruder (co-rotating) with outgassing and multi-feeding zones
 - Mixers (350 cc, 50cc) equipped with ‘N2 chamber’
• Fire testing
 - Limiting oxygen index, UL-94, Glow wire test, Mass loss calorimeter
 - Small furnace (designed to simulate ISO 834, UL1709 tests at the small scale)
 - Mini Steiner tunnel (designed to simulate ASTM E-84 test at the small scale)
 - Burner tests (designed to simulate ISO2685 and NexGen)
• Thermal analyses
 - MDSC (including k = f(T))
 - Very high heating rate TGA (up to 500 °C/min) connected to FTIR
 - Simultaneous TGA/DSC at high temperature (1550 °C)
 - Apparatus for measuring heat conductivity up to 1000 °C
 - High temperature rheometer
• Evolved gas analysis
 - TGA/FTIR - Pyrolyzer GC/MS
 - FTIR bench (quantitative analysis of gases connected to cone, furnace, fire bench ...)
• Aging
 - Accelerated weathering by UV (controlled T and RH)
 - Ventilated oven (controlled T and RH)
• Microscopies (via research common center)
 - Optical and numerical microscopes
 - Electronic microprobe (EPMA)SEM with EDX
 - TEM
• Spectroscopy (via research common center)
 - Liquid/solid state NMR (100, 300 (x2), 400 (x3), 800, 900 MHz)
 - XRD
 - XPS - Tof/SIMS