W. Volksen, R.H. Geiss, et al.
Journal of Polymer Science, Part B: Polymer Physics
Previously, it has been shown that three types of C clusters, characterized by mass range and relative intensities, are produced upon laser ablation of polyimide. The low mass clusters, Cn 9 < n < 25, always appear coincident with peaks 2 amu greater than the bare C cluster. Using perdeuterated polyimide, we have established the elemental composition of these peaks to be predominately, CnH2, rather than Cn-1N, which is allowed since polyimide contains 5 at% N. These results establish the positive ion spectrum of polyimide to be composed of C and H with little contribution from heteroatoms, and show that low mass C clusters preferentially add 2 H atoms in the high energy, multi-element plasma induced by the laser. © 1989.
W. Volksen, R.H. Geiss, et al.
Journal of Polymer Science, Part B: Polymer Physics
W. Volksen, J.L. Hedrick, et al.
Journal of Applied Polymer Science
L. Quach, E. Hornbogen, et al.
Journal of Polymer Science Part A: Polymer Chemistry
C.A. Fyfe, J.R. Lyerla, et al.
Macromolecules