Pe C Group
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The document summarizes the research activities of Prof. A. Recca and his group at the University of Catania. Their work focuses on the synthesis and characterization of aromatic polymers, epoxy/thermoplastic blends, and RTM technology. Current projects include studies on copolyethersulphones and the development of toughened thermoset blends for aerospace composites. The group also works on new materials and processes with industrial partners. They have equipment for polymer synthesis, characterization, and composite processing like RTM.
![3
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50:50 PES:PEES Cl Ended @290°C 4
10
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10
G', G'' [Pa]
Pa-s]
η* [P
G
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10
1
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0,1
, 1 10 100
ω [rad/sec]](https://image.slidesharecdn.com/pecgroup-12537817816331-phpapp03/85/Pe-C-Group-9-320.jpg)
![DGEBA/MDEA
3
10 No Modifier
15% C1
2 15% C2
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15% C3
15% C4
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-s]
η * [Pa-
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Modifier End Group Mn Gc [kJ/m2] Kc [Mpa m3/2]
-2 No Modifier ----------- ----------- 0,23
0 23 0,92
0 92
10
C1 Amine 5k 0,89 1,80
0 25 50 75 100 125 150
C2 Amine 9k 1,15 2,07
Time [min]
C3 Chlorine 10 k 0,52 1,39
C4 Hydroxyl 12 k 1,33 2,20
G.Cicala et al. Journal of Applied Polymer Science, Vol. 101, p.250 (2006)](https://image.slidesharecdn.com/pecgroup-12537817816331-phpapp03/85/Pe-C-Group-16-320.jpg)
![DGEBA/DDS 10 DGEBA/MDEA
1 No Modifier
No Modifier
15% wt Modifier 15% Wt Modifier
30% wt Modifier 30% Wt Modifier
1
Tan δ
Tan δ
0.1
0.1
0.01
0.01
60 90 120 150 180 60 120 180
Temperature [°C] Temperature [°C]
G.Cicala et al. Journal of Applied Polymer Science, Vol. 94, p.361 (2004)](https://image.slidesharecdn.com/pecgroup-12537817816331-phpapp03/85/Pe-C-Group-17-320.jpg)
Pe C Group
- 1. Università di Catania Dipartimento di Metodologie Fisiche e Chimiche per l’Ingegneria
- 2. Group people; Past and current research activities; New projects; N j Equipments; Conclusions.
- 3. Prof.A.Recca Prof A Recca (Full Professor); Ing.Gianluca Cicala (Assistant Professor); Ing.Giuseppe Ing Giuseppe Recca (Contractor); Ing.Michele Costa (Collaborator) Ing.Giuseppe C i ldi (C ll b I Gi Cristaldi (Collaborator); ) Dott. Vincenzo Asarisi (PhD Student); Ing.Ludovica Oliveri (PhD Student).
- 4. Synthesis and characterization of aromatic p y polymers;; Epoxy/Thermoplastic blends; RTM technology; Auxetic materials materials.
- 5. Studies on the synthesis and thermal properties of Copolyethersulphones X O SO2 O O O SO2 X n m Molecular mass 5000 1200 5000-1200 Da Composition ratio n:m 20:80;30:70;40:60;50:50;70:30;80:20 Reactive groups X Cl; OH;NH2;Ph Ammine pendant groups have been also added in some cases
- 6. First step Second step Recca A. et al. (2006) Polymer. vol. 47, pp. 1861-1874.
- 8. Recca A. et al. (2006) Polymer. vol. 47, pp. 1861-1874.
- 9. 3 10 50:50 PES:PEES Cl Ended @290°C 4 10 3 10 G', G'' [Pa] Pa-s] η* [P G 2 10 1 10 2 10 0,1 , 1 10 100 ω [rad/sec]
- 11. The study of epoxy/thermoplastic blends was started in cooperation with ICI Composites first and was continued with Cytec Engineered Materials; y g The aim was to develop thoughened thermoset blends which could fulfill the aerospace requirement of composite primary and secondary structures; str ct res The approach was to use low molecular weight PES copolymers bearing reactive and groups.
- 12. SEM pictures from Arrows Rool Hoop Cicala G., Lo Faro C, Internal Report Cytec, 2001.
- 13. G.Cicala et al. unpubblished results
- 14. 30/70 PES/PEES 40/60 PES/PEES 60/40 PES/PEES SEM pictures of systems With low molar mass (~ 5-6k). G.Cicala et al. unpubblished results
- 15. DGEBA/TGAP/MDEA G. Cicala et al. Journal Of Polymer Engineering vol. 23 (3), p.163, (2003)
- 16. DGEBA/MDEA 3 10 No Modifier 15% C1 2 15% C2 10 15% C3 15% C4 1 10 -s] η * [Pa- 0 10 -1 10 Modifier End Group Mn Gc [kJ/m2] Kc [Mpa m3/2] -2 No Modifier ----------- ----------- 0,23 0 23 0,92 0 92 10 C1 Amine 5k 0,89 1,80 0 25 50 75 100 125 150 C2 Amine 9k 1,15 2,07 Time [min] C3 Chlorine 10 k 0,52 1,39 C4 Hydroxyl 12 k 1,33 2,20 G.Cicala et al. Journal of Applied Polymer Science, Vol. 101, p.250 (2006)
- 17. DGEBA/DDS 10 DGEBA/MDEA 1 No Modifier No Modifier 15% wt Modifier 15% Wt Modifier 30% wt Modifier 30% Wt Modifier 1 Tan δ Tan δ 0.1 0.1 0.01 0.01 60 90 120 150 180 60 120 180 Temperature [°C] Temperature [°C] G.Cicala et al. Journal of Applied Polymer Science, Vol. 94, p.361 (2004)
- 18. G.Cicala et al. Journal of Applied Polymer Science, Vol. 88, p.3021 (2003)
- 19. G.Cicala et al. Journal of Applied Polymer Science, Vol. 89, p.268 (2003)
- 20. Cod Tactix55 MY721 Modifier e 6 1A Si No 0% 1B Si No 10% 1C Si No 30% 2A No Si 0% 2B No Si 10% 2C No Si 30% G.Cicala et al. Journal of Applied Polymer Science, Vol. 100, p.4880 (2006)
- 22. CH2OH H3C O H2 CH3 CH2OH CH2OH C CH3 O O C CH2OH CH2OH O H2 O CH OH Parametri Variati: O O 2 O H2 O CH3 H3C C O CH2OH O CH2 CH2OH O H2 H2C CH3 • Numero di generazione H3C CH2 C C CH2OH H2 C O CH3 O O H2 O • Gruppi superficiali CH2OH H2C O O O CH2OH H3C CH2OH O O O H2 CH2OH • Massa molare C CH3 CH2OH C H2 O O H3C H3C CH2OH CH2OH
- 23. DGEBA/DDS HPB1: 3a Generazione HPB2: 4a Generazione A.Recca et al Polym. Eng.and Sci. (2005) 45(2), 225.
- 24. DGEBA/DDS A.Recca et al Polym. Eng.and Sci. (2005) 45(2), 225.
- 25. Dynamic ramp E= DGEBA/DETDA M= TGAP/DETDA H30= 3a generazione solo OH H30 E1= 3a generazione 11 gruppi epossidici sostituiti Testi isotermi G.Cicala et al. Polym. Eng.and Sci (2006) 46(11), 1502.
- 26. A. Recca et al Rivista Italiana di Compositi e Nanotecnologie (2006) 1, 65
- 27. H311 Hyperbranched Polyester with high molar mass H311 Liquid at room temperature q p DGEBA/DETDA PCL= Policaprolactone G.Cicala, G.Recca Polym. Eng.and Sci. (2008) in press
- 28. G.Cicala, G.Recca, S.Carciotto, C.L.Restuccia Polym.Eng. Sci. (2008) accepted
- 30. Several projects with companies: ◦ New materials and process for FRP pypes (Holson Impianti SpA); ◦ Composite shielding for a robot for fire inspection (Euroconsult and Gesind). ◦ Housing prototype for helicopters (Agusta- Westland);
- 31. Properties and performances of various hybrid glass/natural fibre composites for curved pipes G.Cicala, G.Cristaldi, G.Recca,G.Ziegmann, A. ElSabbagh, M. G Cicala G Cristaldi G Recca G Ziegmann A ElSabbagh M Dickert , Materials and Design in press
- 41. Property CHISMATECH DIAB Dynicell DIAB ProBalsa Drapability Drapabilit +++ -- --- Compressive ++++ - - Strength Shear Strength ++++ - - Compressive p + +++ - Modulus Shear Modulus - - ++
- 42. Nondimensional compressive strength 1.4 14 1.2 1 0.8 0.6 0.4 0.2 0 Nondimensional shear strength 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0
- 46. Spin off proposed on RTM technology; Start of operation 2009 2009.
- 47. DMTA Tritech2000 (all geometries); ARES Rheometer; DSC 60 Schimadsu; DTG Schimatsu; IR Perkin Elmer; NMR 200MHz and 500MHz; Inston 4301; RTM Hypaject MK III; Industrial oven (1*1m internal chamber); (1 1m Pump system for VARTM.