Wüest M. 51 Wykes M. 82 Yamaguchi M. 17 Ybarra G. 129 Yubero F ...

More documents

Recommendations

Info

JUNE 28 WEDNESDAY MORNING RIVA-SS-WeM-OR.6 SURFACE ANALYSIS OF NBR ELASTOMERS MODIFIED WITH DIFFERENT PLASMA TREATMENTS. L. Martínez, L. Álvarez, Y. Huttel, J. Méndez, E. Román. Instituto de Ciencia de Materiales de Madrid (ICMM-CSIC) Cantoblanco, 28049-Madrid, Spain. A. Vanhulsel, B. Verheyde, R. Jacobs, Flemish Institute for Technological Research (VITO). Boeretang 200, 2400-MOL, Belgium. In this work, three rubber–like materials with applications applied in the automotive industry were studied: two Nitrile Butyl Rubber (NBR 7201 and NBR 9003) and one Hydrogenated Nitrile Butyl Rubber (HNBR 8001). Different atmospheric pressure plasma treatments were used to modify the surface properties of these materials in order to improve their tribological (properties). Surface analysis of the samples by means of X-ray Photoelectron Spectroscopy (XPS) was performed in order to get information about the surface chemistry and the elemental composition of the contact surfaces. In addition, wetting experiments were also performed by measuring the contact angle with in the frame of the sessile drop method. The obtained results allow an evaluation of the surface free energy of the solids and of the impact of different plasma treatments. The XPS results showed a modification of the surface composition of both NBR rubbers, while the same treatments produced slight modifications on the surface chemistry of the HNBR. The main modification was based on an increase in the oxygen content. The combination of N 2 and CH 3 COOH produced the strongest modifications of the surface composition of the tested elastomers. All these surface modifications also produced a change on the surface energy of the rubber-like materials. The results obtained in the contact angle measurements revealed that the plasma treatments produced a modification of the wettability of the rubber-like NBRs and, therefore, a modification of their surface free energy. 94
JUNE 28 WEDNESDAY MORNING RIVA-SS-WeM-OR.5 DEVELOPMENT OF AN APPLICATION FOR MONI- TORIZATION AND ANALYSIS OF THE ELECTRIC SIGNAL OF AN ULTRAVIOLET PHOTOELECTRON SPECTROMETER. P. M. S. Cristo, A. A. Dias, P. Vieira, M. L. Costa. 1 Centre for Physics and Technological Research, CEFITEC, 2 Departamento Física, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Monte de Caparica, 2<strong>82</strong>9-<strong>51</strong>6, Caparica, Portugal. e-mail: aad@fct.unl.pt The development of an application for monitorization and analysis of the electric signal of an ultraviolet photoelectron spectrometer [i], witch allows for more precision in both the spectrometer analysis parameters and in the collected data, is presented. The principal features are the control of the voltage applied to the analyser hemispheres and the acquisition of counts from the spectrometer. A Labview programming environment was chosen, jointly with a Data Acquisition board for the counting, input and output data. The construction of a Digital-Analogic converter is also included in the project in order to convert the digital signal available in the acquisition board and controlled by the Labview to analogical data for input in the spectrometer. References [i] F. Innocenti, L. Zuin, M.L. Costa, A.A. Dias, A. Morris, A.C.S. Paiva, S. Stranges, J.B. West, J.M. Dyke, J. Elec. Spec. Rel. Phen. 2005, 142, 241-252. 93
Page 1 and 2:
Wüest M. 51 Wykes M. 82 Yamaguchi
Page 3 and 4:
Oliveira F. J. 140 Orts M.J. 76 Ota
Page 5 and 6: Gabouze N. 125 Galán L. 112, 113,
Page 7 and 8: AUTHOR’S INDEX Aouabdia Y. 46 Aba
Page 9 and 10: AUTHORS’S INDEX 141
Page 11 and 12: JUNE 28 WEDNESDAY AFTERNOON JS2-WeA
Page 27 and 28: JS1 POSTERS 123
Page 29 and 30: JUNE 28 WEDNESDAY AFTERNOON RIVA-TF
Page 35 and 36: RIVA-TF POSTERS 115
Page 37 and 38: JUNE 28 WEDNESDAY AFTERNOON RIVA-SS
Page 39 and 40: RIVA-SS POSTERS 111
Page 41 and 42: JUNE 28 WEDNESDAY MORNING WS-18-WeM
Page 43 and 44: JUNE 28 WEDNESDAY MORNING WS-18-TuA
Page 45 and 46: WS-18 SESSION 105
Page 47 and 48: JUNE 28 WEDNESDAY MORNING JS2-WeM-O
Page 49 and 50: JUNE 28 WEDNESDAY MORNING JS2-WeM-I
Page 51 and 52: JUNE 28 WEDNESDAY MORNING JS2-WeM-O
Page 53 and 54: JS2 SESSION 97
Page 55: JUNE 28 WEDNESDAY MORNING RIVA-SS-W
Page 59 and 60: JUNE 28 WEDNESDAY MORNING RIVA-SS-W
Page 61 and 62: JUNE 28 WEDNESDAY MORNING RIVA-SS-W
Page 63 and 64: RIVA-SS SESSION 87
Page 65 and 66: PLENARY 85
Page 67 and 68: JUNE 27 TUESDAY AFTERNOON WS-18-TuA
Page 69 and 70: JUNE 27 TUESDAY AFTERNOON WS-18-TuA
Page 71 and 72: JUNE 27 TUESDAY AFTERNOON JS1 SESSI
Page 73 and 74: JUNE 27 TUESDAY AFTERNOON JS1-TuA-I
Page 75 and 76: JUNE 27 TUESDAY AFTERNOON JS1-TuA-I
Page 77 and 78: TUESDAY AFTERNOON 73
Page 79 and 80: JUNE 27 TUESDAY MORNING WS-18-TuM-O
Page 81 and 82: JUNE 27 TUESDAY MORNING WS-18-TuM-O
Page 83 and 84: JUNE 27 TUESDAY MORNING WS-18-TuM-I
Page 85 and 86: JUNE 27 TUESDAY MORNING JS1-TuM-INV
Page 89 and 90: JUNE 27 TUESDAY MORNING JS1-TuM-.IN
Page 93 and 94: JS1 SESSION 57
Page 95 and 96: PLENARY 55
Page 97 and 98: JUNE 26 MONDAY AFTERNOON WS-18-MoA-
Page 99 and 100: JUNE 26 MONDAY AFTERNOON WS-18-MoA.
Page 101 and 102: WS-18 SESSION 49
Page 103 and 104: JUNE 26 MONDAY AFTERNOON RIVA-TF-Mo
Page 105 and 106: JUNE 26 MONDAY AFTERNOON RIVA-TF-Mo
Page 107 and 108:
JUNE 26 MONDAY AFTERNOON RIVA-TF-Mo
Page 109 and 110:
JUNE 26 MONDAY AFTERNOON RIVA-TF-Mo
Page 111 and 112:
JUNE 26 MONDAY AFTERNOON ETCHC-MoA-
Page 113 and 114:
JUNE 26 MONDAY AFTERNOON ETCHC-MoA-
Page 115 and 116:
ETCHC SESSION 35
Page 117 and 118:
JUNE 26 MONDAY MORNING WS-18-MoM-OR
Page 119 and 120:
JUNE 26 MONDAY MORNING WS-18-MoM-OR
Page 121 and 122:
JUNE 26 MONDAY MORNING WS-18-MoM.IN
Page 123 and 124:
JUNE 26 MONDAY MORNING RIVA-TF-MoM-
Page 125 and 126:
Page 127 and 128:
Page 129 and 130:
Page 131 and 132:
Page 133 and 134:
JUNE 26 MONDAY MORNING ETCHC-MoM-OR
Page 135 and 136:
Page 137 and 138:
Page 139 and 140:
Page 141 and 142:
JUNE 26 MONDAY MORNING ETCHC--MoM-O
Page 143 and 144:
PARALLEL SESSIONS 7
Page 145 and 146:
PLENARY 5
Page 147 and 148:
JUNE 26, 2006 Morning Session INDEX
Page 149:
Sigilum Universitatis Studii Salama
show all

Wüest M. 51 Wykes M. 82 Yamaguchi M. 17 Ybarra G. 129 Yubero F ...

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?