Surface Characterization and Adhesive Properties of Poly(imidesiloxane) Copolymers Containing Multiple Siloxane Segment Lengths
| Autor: | Christine M. Mahoney, Joseph A. Gardella, Jerold C. Rosenfeld |
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| Rok vydání: | 2002 |
| Předmět: | |
| Zdroj: | Macromolecules. 35:5256-5266 |
| ISSN: | 1520-5835 0024-9297 |
| Popis: | A series of poly(imidesiloxane) (SIM) copolymers have been synthesized from α,ω‘-aminopropylpoly(dimethylsiloxane) (PDMS) of varying lengths, 2,2-bis(4-[4-aminophenoxyl]phenyl)propane (BAPP), and 4,4‘-oxydiphthalic anhydride (ODPA). In this series, the total composition of PDMS was maintained at 10 wt % with multiple PDMS segment lengths of different relative compositions (e.g., 5% PDMS containing 1 repeat unit, designated G-1, and 5% PDMS containing an average repeat unit of 9, designated G-9, incorporated into the same polymer vs 1% G-1 and 9% G-9 in the same polymer). Two main polymer series were synthesized: one containing G-1 and G-9 in varying ratios and the other containing G-5 and G-9. Both of these series have been analyzed using angle-dependent X-ray photoelectron spectroscopy (XPS). The Si/N ratios as measured by XPS from all members of the G-9/G-1 series were statistically equivalent to that of the polymer containing pure 10% G-9, while that of the polymer containing 10% G-1 had a significant... |
| Databáze: | OpenAIRE |
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