Practical surface analysis, second edition. Volume 2 — Ion and neutral spectroscopy

Briggs, A. G.

doi:10.1016/0160-9327(93)90014-t

Cited by 9 publications

(6 citation statements)

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“…29 On the other hand, SSIMS gives us qualitative surface chemistry to a depth of approximately 10 Å and is far more sensitive than XPS. 30 SSIMS information is very complementary to the quantitative results that were obtained by XPS. The combination of XPS and SSIMS is a useful technique Furthermore, the surface structure of PAS films was also visually elucidated by TEM observation and was compared with those that were obtained by XPS and SSIMS.…”

Section: Introductionmentioning

confidence: 91%

Novel Functional Polymers: Poly(dimethylsiloxane)−Polyamide Multiblock Copolymer. 8. Surface Studies of Aramid−Silicone Resin by Means of XPS, Static SIMS, and TEM

et al. 1997

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The surface structures of solvent-cast films with aramid−poly(dimethylsiloxane) (poly(dimethylsiloxane) = PDMS) multiblock copolymers (PASs) that contained 8, 14, 24, 41, and 71 wt % of PDMS were characterized by angular-dependent X-ray photoelectron spectroscopic (XPS) measurements, static secondary ion mass spectrometric (SSIMS) measurements, and transmission electron microscopic (TEM) observations. The results of angular-dependent XPS measurement elucidated that the surface concentration of the PDMS segments was much higher than that in bulk and further increased with a decrease in the sampling depth. In particular, the Si/C ratios that were determined by XPS at a 10° takeoff angle in PAS films that contained more than 24 wt % PDMS were almost the same as that in the PDMS homopolymer. From the results of SSIMS measurement, the outermost surfaces of all of the PAS films were found to be completely covered with a PDMS segment even if the PDMS content was only 8 wt % in bulk. In addition, we visually confirmed the surface enrichment of the PDMS segment by TEM observation. The free surfaces of all PAS films were predominantly covered with a PDMS thin layer, although the microphase-separated structures in bulk were different according to the PDMS content in PAS.

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Section: Introductionmentioning

confidence: 91%

Novel Functional Polymers: Poly(dimethylsiloxane)−Polyamide Multiblock Copolymer. 8. Surface Studies of Aramid−Silicone Resin by Means of XPS, Static SIMS, and TEM

et al. 1997

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“…These techniques probe the chemistry of the polymer surface to a depth of between 2 and 10 nm for XPS 19 and approximately 1 nm for SSIMS. 20 The use of both of these techniques to study the composition of biodegradable polymers and polymer blend surfaces is well established. [21][22][23] The analysis of the surface morphology of the polymer blends has been performed using an atomic force microscope (AFM).…”

Section: Introductionmentioning

confidence: 99%

Surface Analysis of Biodegradable Polymer Blends of Poly(sebacic anhydride) and Poly(dl-lactic acid)

et al. 1996

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The erosion behavior of blends of biodegradable polymers is determined by the chemical composition and the molecular organization of the surface of the material. Providing a comprehensive characterization of polymer blend surfaces requires a multi-instrumental approach, as no individual surface analysis technique can ascertain both the chemical and morphological nature of surfaces. In this study we have characterized the surfaces of immiscible and miscible blends of the biodegradable polymers poly(sebacic anhydride) (PSA) and poly(DL-lactic acid) (PLA) using the surface techniques of static secondary ion mass spectrometry (SSIMS), X-ray photoelectron spectroscopy (XPS), and atomic force microscopy (AFM). SSIMS and XPS have recorded the surface enrichment of all of the blends with the PLA component. For the immiscible blends, differential charging within the XPS spectra also provides evidence of phase separation. AFM data have contrasted the surface morphologies of the immiscible and miscible blends, and the use of in situ AFM techniques has enabled the effect of blend morphology on surface erosion to be visualized. For the immiscible systems, clear phase separation morphologies can be observed and at certain blend compositions the rapid loss of the PSA from the films results in the exposure of the PLA morphology. However, as the PLA content is increased, the surface enrichment effect results in the degradation behavior of the blend being dominated by the slow degrading PLA surface layer. For the miscible systems, the in situ AFM studies visualized a disintegration of the whole blend film without the exposure of a PLA morphology, indicating that the hydrolysis of the PSA component rendered the whole film unstable. The use of SIMS, XPS, and AFM, while highlighting the complexity of polymer blend surfaces, can provide a rapid analysis of the physicochemical phenomena underlying the organization of these systems and therefore should facilitate the application of such systems as biomaterials.

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“…6c,d ). The splitting of the Ag 3d doublet is 6.0 eV, implying the presence of metallic Ag 37 . However, Ti 94 Ag 3 Pd 3 had a thinner oxide layer ( Fig.…”

Section: Resultsmentioning

confidence: 97%

Ti–Ag–Pd alloy with good mechanical properties and high potential for biological applications

Zadorozhnyy

Shi

Gorshenkov

et al. 2016

Sci Rep

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Ti-based alloys containing Ag were produced by tilt-casting method and their properties were studied. Even in its as-cast state, Ti94Ag3Pd3 showed relatively high tensile properties, good electrochemical behavior, and good biocompatibility. The relatively good mechanical properties of the as-cast α-Ti-type Ti94Ag3Pd3 alloy (tensile strength up to 850 MPa and elongation of ~10%) can be explained by its severely deformed, fine crystalline structure. The high biocompatibility of Ti94Ag3Pd3 can be explained by the Ag–Pd interaction, which inhibits the release of Ag ions from the surface. Ag, in combination with Pd has no toxic effects and demonstrates useful antimicrobial properties. The Ti94Ag3Pd3 alloy shows a good potential to be applied as a biomedical implant alloy.

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Practical surface analysis, second edition. Volume 2 — Ion and neutral spectroscopy

Cited by 9 publications

References 0 publications

Novel Functional Polymers: Poly(dimethylsiloxane)−Polyamide Multiblock Copolymer. 8. Surface Studies of Aramid−Silicone Resin by Means of XPS, Static SIMS, and TEM

Novel Functional Polymers: Poly(dimethylsiloxane)−Polyamide Multiblock Copolymer. 8. Surface Studies of Aramid−Silicone Resin by Means of XPS, Static SIMS, and TEM

Surface Analysis of Biodegradable Polymer Blends of Poly(sebacic anhydride) and Poly(dl-lactic acid)

Ti–Ag–Pd alloy with good mechanical properties and high potential for biological applications

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