Summary Abstract: Molecular orientation effects on the electronic excitations of chemisorbed pyridine on Ni(001)

1984 ◽  
Vol 2 (2) ◽  
pp. 1015-1016 ◽  
Author(s):  
N. J. DiNardo ◽  
J. E. Demuth ◽  
Ph. Avouris
Keyword(s):  
Molecular Orientation ◽  
Electronic Excitations ◽  
Orientation Effects

scholarly journals Molecular orientation effects in CO fragmentation induced by charge-changing collisions of 6 MeV O4+ions

2007 ◽  
Vol 58 ◽  
pp. 173-176 ◽  
Author(s):  
T Mizuno ◽  
T Majima ◽  
H Tsuchida ◽  
Y Nakai ◽  
A Itoh
Keyword(s):  
Molecular Orientation ◽  
Orientation Effects

Fine structure and physical properties of poly(butylene terephthalate) sheets prepared by roll drawing

e-Polymers ◽  
2008 ◽  
Vol 8 (1) ◽  
Author(s):  
Sunhee Lee ◽  
Kazuo Nakayama ◽  
Hyunhok Cho
Keyword(s):  
Crystal Structure ◽  
Mechanical Properties ◽  
Fine Structure ◽  
Physical Properties ◽  
Molecular Orientation ◽  
Thermal And Mechanical Properties ◽  
Butylene Terephthalate ◽  
Orientation Effects ◽  
Axial Form ◽  
Drawing Method

AbstractPBT sheets were extruded from T-die using a single extruder and were winded by a take-up roller controlled at 50°C and with speed at 1.2 m/min. Oriented PBT sheets were prepared with various winding roll speeds at 3.6, 4.8 and 6.0 m/min. Fine structure and physical properties of PBT sheets thus obtained were investigated by measuring the molecular orientation, crystal structure, dynamic visco-elasticity, thermal and mechanical properties, sonic modulus, etc. PBT melts were found to be readily crystallizable in the sheet. In the case of roll drawing, the DRmax of PBT sheet was 5. The PBT sheets prepared from winding speed at 6 m/min showed polymorphism of both α- and β-form crystallites with crystallinity of about 24%. In the tri-directional WAXD patterns, the PBT sheets by the roll drawing method turned out to be oriented in the uniplanar-axial form. For the roll drawn PBT sheets with various winding speeds, large orientation effects were observed in the winding direction together with improved thermal and mechanical properties.

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