Chimica delle radiazioni per la
sintesi di materiali innovativi
G.Spadaro, C. Dispenza, S.Alessi
Università di Palermo, Dipartimento di Ingegneria Chimica dei Processi e dei Materiali
Viale delle Scienze, 90128 Palermo
[email protected]
Dipartimento di Ingegneria Chimica dei Processi e dei materiali (DICPM)
CORE GROUP
STRUCTURE & SKILLS:
Radiation Processing – Polymer Science
G.Spadaro, C. Dispenza
S.Alessi, D.Conduruta
Internal Collaborations
External Collaborations
CYTEC ENGINEERED MATERIALS
Wilton (UK)
DICPM Palermo
Materials and skills
A.Baidak,
A.Baidak, S.Ward
Electrochemistry
Electrical properties evl.
C. Sunseri, S. Piazza, R. Inguanta
INFN Messina
DIMA Palermo
Mechanical properties evl.
G.Pitarresi, D.Tumino, A. Pantano
Irradiation facilities
(e-beam LINACLINAC-5 MeV)
MeV)
Barnà,
Barnà, Trimarchi
ISOF-CNR Bologna
Irradiation facilities
(e-beam LINACLINAC-12 MeV)
MeV)
P.Fuochi, S. Emmi, M. LaValle
DIN Palermo
Irradiation facilities
(60Co Irradiator)
Irradiator)
E. Calderaro,
Calderaro, E. Tomarchio,
Tomarchio, A. Parlato
ICHTJ (Inst. of Nuclear Chem.and Tech.) Warsaw
Irradiation facilities
(e-beam)
beam)
A.Chmielewski,G.
A.Chmielewski,G. Przybytniak
PALERMO GROUP RESEARCH ACTIVITY
Dipartimento di Ingegneria Chimica dei Processi e dei materiali (DICPM)
CORE GROUP
STRUCTURE & SKILLS:
Radiation Processing – Polymer Science
G.Spadaro, C. Dispenza
S.Alessi, D.Conduruta
Internal Collaborations
External Collaborations
CYTEC ENGINEERED MATERIALS
Wilton (UK)
DICPM Palermo
Materials and skills
A.Baidak,
A.Baidak, S.Ward
Electrochemistry
Electrical properties evl.
C. Sunseri, S. Piazza, R. Inguanta
INFN Messina
DIMA Palermo
Mechanical properties evl.
G.Pitarresi, D.Tumino, A. Pantano
Irradiation facilities
(e-beam LINACLINAC-5 MeV)
MeV)
Barnà,
Barnà, Trimarchi
ISOF-CNR Bologna
Irradiation facilities
(e-beam LINACLINAC-12 MeV)
MeV)
P.Fuochi, S. Emmi, M. LaValle
DIN Palermo
Irradiation facilities
(60Co Irradiator)
Irradiator)
E. Calderaro,
Calderaro, E. Tomarchio,
Tomarchio, A. Parlato
ICHTJ (Inst. of Nuclear Chem.and Tech.) Warsaw
Irradiation facilities
(e-beam)
beam)
A.Chmielewski,G.
A.Chmielewski,G. Przybytniak
PALERMO GROUP RESEARCH ACTIVITY
Dipartimento di Ingegneria Chimica dei Processi e dei materiali (DICPM)
CORE GROUP
STRUCTURE & SKILLS:
Radiation Processing – Polymer Science
G.Spadaro, C. Dispenza
S.Alessi, D.Conduruta
Internal Collaborations
External Collaborations
CYTEC ENGINEERED MATERIALS
Wilton (UK)
DICPM Palermo
Materials and skills
A.Baidak,
A.Baidak, S.Ward
Electrochemistry
Electrical properties evl.
C. Sunseri, S. Piazza, R. Inguanta
INFN Messina
DIMA Palermo
Mechanical properties evl.
G.Pitarresi, D.Tumino, A. Pantano
Irradiation facilities
(e-beam LINACLINAC-5 MeV)
MeV)
Barnà,
Barnà, Trimarchi
ISOF-CNR Bologna
Irradiation facilities
(e-beam LINACLINAC-12 MeV)
MeV)
P.Fuochi, S. Emmi, M. LaValle
DIN Palermo
Irradiation facilities
(60Co Irradiator)
Irradiator)
E. Calderaro,
Calderaro, E. Tomarchio,
Tomarchio, A. Parlato
ICHTJ (Inst. of Nuclear Chem.and Tech.) Warsaw
Irradiation facilities
(e-beam)
beam)
A.Chmielewski,G.
A.Chmielewski,G. Przybytniak
PALERMO GROUP RESEARCH ACTIVITY
Dipartimento di Ingegneria Chimica dei Processi e dei materiali (DICPM)
PALERMO RESEARCH GROUP
MAIN RESEARCH THEMES
1. Radiation curing of epoxy based blends
2. Surfaces treatments for adhesive joints
3. Conductive polymer composites
PALERMO GROUP RESEARCH ACTIVITY
Dipartimento di Ingegneria Chimica dei Processi e dei materiali (DICPM)
In particular…
MAIN RESEARCH THEMES
1. Radiation curing of epoxy based blends :
a) Study of the reaction meccanism
b) Synthesis of matrices for advanced composites
(aerospace and automative applications)
c) Synthesis of structural adhesives
d) Synthesis of carbon nano tubes - epoxy systems
2. Surfaces treatments for adhesive joints
3. Conductive polymer composites
PALERMO GROUP RESEARCH ACTIVITY
Dipartimento di Ingegneria Chimica dei Processi e dei materiali (DICPM)
1. Radiation curing of epoxy based blends :
O
a) Study of the reaction meccanism
O
?
Use of a model system (monofunctional epoxy monomer)
in order to understand :
how and why epoxy resin polymerization occurs ?
through
γ irradiation
pulse radiolysis experiments
IGS-3: 60Co γ
irradiator
Dip. Ingegneria Nucleare
E-beam Linac
(Bologna)
Università di Palermo
Dose rate up to 10 kGy/h
Temperature control (from
–30°C to 100°C ) and
pressure control (from 1
Bar to 100 Bar )
PALERMO GROUP RESEARCH ACTIVITY
Dipartimento di Ingegneria Chimica dei Processi e dei materiali (DICPM)
1. Radiation curing of epoxy based blends :
E-Beam LINAC 12 Mev
b) Synthesis of matrices for advanced composites
(aerospace and automative applications)
Use of epoxy-thermoplastic blends
Materials
requirements:
PROCESSABILITY, SOLVENT RESISTANCE
HEAT RESISTANCE : high Tg ( > 170°C)
MECHANICAL PROPERTIES :
high elastic modulus (> 3 GPa)
high fracture tougheness
(1 < KIC < 2 MPa.m1/2)
ISOF - C.N.R
Bologna, Italy
AIM OF THE WORK :
investigation of the influence of processing parameters (dose, dose rate),
formulation and hydrothermal ageing on:
SEM
•
morphology
•
thermal behaviour (Tg)
•
mechanical properties (KIC)
DMTA
Fracture toughness test
PALERMO GROUP RESEARCH ACTIVITY
Dipartimento di Ingegneria Chimica dei Processi e dei materiali (DICPM)
1. Radiation curing of epoxy based blends :
E-Beam LINAC
c) Synthesis of structural adhesives
5 MeV
Use of a novel formulation (epoxy-thermoplastic blends)
suggested by Cytec Engineered Materials
AIM OF THE WORK
investigation of the influence of processing parameters (dose, dose rate),
formulation on:
•
morphology
SEM
•
thermal behaviour (Tg)
DMTA
•
mechanical properties
of joints (LSS)
Single Lap shear test
PALERMO GROUP RESEARCH ACTIVITY
Dipartimento di Ingegneria Chimica dei Processi e dei materiali (DICPM)
1. Radiation curing of epoxy based blends :
d) Synthesis of CNT- epoxy systems
Use of Multi Walled CNT- epoxy blends
E-beam
UV
AIM OF THE WORK
investigation of
dispersion on:
the influence of processing parameters (dose, dose rate), formulation and
•
morphology
SEM
•
thermal behaviour (Tg)
DMTA
•
mechanical properties (KIC)
Fracture toughness test
PALERMO GROUP RESEARCH ACTIVITY
Dipartimento di Ingegneria Chimica dei Processi e dei materiali (DICPM)
2. Surfaces treatments for adhesive joints
Study of the influence of the surface treatments on the mechanical properties of joints (T-peel test)
realized with commercial Cytec adhesive (FM300K) and substrates in aluminium alloy.
SURFACE TREATMENTS
PHYSICAL
DEGREASING
EFFECT
REMOVAL
OF ORGANIC
CONTAMINATION
REMOVAL OF WEAK
INORGANIC LAYER
MECHANICAL
GRIT BLASTING
CHANGE OF TOPOGRAPHY
and/or CHEMISTRY
CHEMICAL
HOT DRY
HOT WET
CHANGE OF TOPOGRAPHY
and/or CHEMISTRY
ETCHING
CHANGE OF TOPOGRAPHY
and/or CHEMISTRY
ELECTROCHEMICAL
ANODIZATION
CHANGE IN THICKNESS
and/or MORPHOLOGY OF
METAL OXIDE
REMOVAL OF WEAK
INORGANIC LAYER
RADIATION PROCESSING
LASER
CHANGE OF TOPOGRAPHY/
CHEMISTRY
T-peel test
allows to evaluate
the fracture energy
of the adhesive joint
3. Conductive polymer composites
SOFT Bio-NanoCOMPOSITES:
Materials for an Interactive Interface Between Human and the Environment
The “Soft Composite” Concept
HYDROGEL
+
ORGANIC
CONJUGATED
POLYMER
it can be obtained through
HIGH ENERGY RADIATION CURING
(γγ-rays, e-beam)
PALERMO GROUP RESEARCH ACTIVITY
Dipartimento di Ingegneria Chimica dei Processi e dei materiali (DICPM)
The “Soft Composite” Concept
Systems sensitive to electro/optical stimuli
Oxidising/reducing
molecules
Light
pH
Inflammation
Electric field
HYDROGEL
“Soft nanocomposite”
ORGANIC
CONJUGATED
POLYMER
applications
“Smart” textiles
Smart
Biocoatings &
Films
Advanced
Sensors
Diagnostics &
Therapeutic
Delivery
Systems
Nueuronal
Tissue
Engineering
Riferimenti bibliografici
1. M. R. Cleland, L.A. Parks. S. Cheng, Nuclear Instruments and Methods in Physics Research B , 208 pp.66-73 (2003)
2. R. L. Clough, Nuclear Instruments and Methods in Physics Research B , 185 pp. 8-33 (2001)
3. S. Alessi, E. Calderaro, A. Parlato, P. Fuochi, M. Lavalle, U. Corda, C. Dispenza, G. Spadaro, Nuclear Instruments and
Methods in Physics Research B, 236, 55-60 (2005)
4. S.Alessi, C. Dispenza, G. Spadaro Macromolecular Symposia 247 (2007) 238-243;
5. S. Emmi, U. Corda, P.G. Fuochi, M. Lavalle, S. Alessi, G. Spadaro Radiat. Phys. and Chem. Vol.76 (2007) 1251-1256;
6. S. Alessi, A. Parlato, C. Dispenza, M. De Maria, G. Spadaro Radiat. Phys. and Chem. Vol 76 (2007) 1347-1350;
7. S. Alessi, C. Dispenza, P.G. Fuochi, U. Corda, M. Lavalle, G. Spadaro Radiat. Phys. and Chem. Vol.76 (2007) 13081311.
8. C.Spadaro, C.Dispenza, C.Sunseri J.Phys.: Condens. Matter 18 (2006) S2007-S2018
9. C. Dispenza, G. Battaglia, G. Giammona, M. Licciardi, G. Spadaro Colloid & Polymer Science, 284(2), 151-159 (2005).
10.C. Dispenza, C. Lo Presti, C. Belfiore, G. Spadaro, S. Piazza Polymer, 47, 961-971(2006).
11.C. Dispenza, M. Leone, C. Lo Presti, F. Librizzi, G. Spadaro, V. Vetri Journal of Non Crystalline Solids, 352, 3835-3840
(2006).
Thank you
PALERMO GROUP RESEARCH ACTIVITY
Dipartimento di Ingegneria Chimica dei Processi e dei materiali (DICPM)