The influence of vacuum‐ultraviolet radiation on poly(ethylene terephthalate)

Surface Characteristics of Activated Carbons Obtained by Pyrolysis of Plasma Pretreated PET

“…This means that the consequence of the plasma treatment prior to the carbonization is the partial elimination of the constrictions which appear in the micropore networks of C800 and C950. These constrictions are produced by amorphous carbon deposits formed by low-molecular-weight products degradation during the carbonization process. , Thus, it is likely that the elimination of the constrictions of samples pretreated with helium plasma is due to the fact that this treatment removes in part these low-molecular-weight materials. − This effect is particularly relevant at small periods of helium plasma treatment (4 min). Nevertheless, at larger periods (15 min) of helium plasma treatment, cross-linking reactions appear. ,− As a consequence, the treatment at these larger periods results in the elimination of the low-molecular-weight materials and also in the production of higher molecular-weight products (by cross-linking) which are deposited on the surface of PET and which can also be a source of amorphous carbon during the carbonization.…”

Interaction of Photons with Polymers: From Surface Modification to Ablation

“…Under well‐controlled conditions, even polymer etching has been achieved with mercury lamps, excimer lamps, and discharge lamps. VUV sources such as cold plasmas153–155 and VUV resonance lamps156,157 have also been applied to study the transformation and degradation of organic polymers or to improve micro wear resistance 157. The VUV irradiation of cold plasmas has also been used to simulate certain conditions in outer space to test long‐term stability of materials under these conditions 158,159…”

Photochemical Modification of Cross-Linked Poly(dimethylsiloxane) by Irradiation at 172 nm

“…Recent applications of excimer lamps include photodeposition of large area or patterned thin metal films, , photoassisted low-temperature oxidation of Si, SiGe, and Ge, UV curing, polymer etching and microstructuring of polymer surfaces, , and recently even for the nitriding of polyolefin surfaces . Vacuum ultraviolet sources, such as cold plasmas − and VUV resonance lamps, , have also been applied to study the transformation and degradation of organic polymers, − or to improve the micro-wear resistance . The VUV irradiation of cold plasmas has also been used to simulate certain conditions in outer space to test the long-term stability of materials under these conditions. , …”