112 Result(s)

Article

The interplay between surface micro-topography and -mechanics of type I collagen fibrils in air and aqueous media: An atomic force microscopy study

Calf skin type I collagen fibrils were regenerated from acidic solution and imaged with contact mode atomic force microscopy in air, water, and buffer solution. When imaged in air at a contact force of 20-150 ...

K. Kato, G. Bar, H.-J. Cantow in The European Physical Journal E (2001)

Article

Investigation of morphologies and nanostructures of polymer blends by tap** mode phase imaging

Y. Thomann, H.-J. Cantow, G. Bar, M.-H. Whangbo in Applied Physics A (1998)

Article

Isothermal melt crystallization kinetics of poly(L-lactic acid)

A DSC study was carried out of the isothermal melt crystallization kinetics of poly(L-lactic acid), PLLA, at 110, 115, 120, 125 and 130‡C. The experimental data were evaluated within the framework of the well-...

E. Urbanovici, H. A. Schneider, D. Brizzolara, H. J. Cantow in Journal of thermal analysis (1996)

Article

Rheological investigation of form relaxation and interface relaxation processes in polymer blends

Transmission electron microscopical and rheological investigations have been performed on polymer blend systems of the type A/B, A/A-b-B/B, and A/C-b-B/B, where B is poly(methyl methacrylate) as the continuous...

R. -E. Riemann, H. -J. Cantow, C. Friedrich in Polymer Bulletin (1996)

Article

Atomic force microscopy of polyethylene and poly-(d-lactide) single crystals

Single crystals of polyethylenes with different molecular weight and of poly(d-lactide) were examined with atomic force microscopy. Morphologies of single crystals and their aggregates formed by overlaying as ...

K. Crämer, A. Wawkuschewski, A. Domb, H. -J. Cantow, S. N. Magonov in Polymer Bulletin (1995)

Article

Pressure-volume-temperature behaviour of molten polymers

The solubility parameter theory of Hildebrand and Scott extended for polymer blends originally has accounted for dissimilarities only between contact energies of the blend components, neglecting free volume effec...

B. Rudolf, H. A. Schneider, H. -J. Cantow in Polymer Bulletin (1995)

Article

Scanning tunneling microscopy study of molecular order at liquid-solid interfaces

Adsorbates of normal alkane C₃₆H₇₄, cycloalkanes (CH₂)₄₈ and (CH₂)₇₂, decanol C₁₀H₂₁OH, 4-hexyl-4′-CyanoBiphenyl (6CB) and 4-octyl-4t′-CyanoBiphenyl (8CB) on graphite and β-Nb₃I₈ were studied by Scanning Tunnelin...

S. N. Magonov, A. Wawkuschewski, H. -J. Cantow, W. Liang… in Applied Physics A (1994)

Article

Scanning force microscopy of oriented iso- and syndiotactic polypropylene films

Different scanning force microscopy (SFM) modes were applied for the examination of drawn films of isotactic and syndiotactic polypropylene, iPP and sPP. Uniaxially stretched films with a draw ratio λ=6 were s...

K. Crämer, M. Schneider, R. Mülhaupt, H. -J. Cantow, S. N. Magonov in Polymer Bulletin (1994)

Article

Pressure influence on the glass transition of polymers and polymer blends

p-V-T measurements have been carried out on a broad series of polymers and polymer blends. The effect of pressure on the glass transition temperature, T_g, and on related properties-increments of the coefficients ...

H. A. Schneider, B. Rudolf, K. Karlou, H. -J. Cantow in Polymer Bulletin (1994)

Article

Surface morphology and nanostructure of high modulus polyethylene fiber

Surface morphology and nanostructure of the ultrahigh molecular weight polyethylene fiber Spectra 900 were examined by atomic force microscopy under water, with height and lateral force registration. Non-unifo...

A. Wawkuschewski, H. J. Cantow, S. N. Magonov in Polymer Bulletin (1994)

Article

Scanning force microscopy of nanofibrillar structure of drawn polyethylene tapes

Different scanning force techniques and specially selected probes were employed to examine the nanofibrillar structure of gel-drawn ultra high molecular weight polyethylene. In order to avoid image artifacts a...

S. S. Sheiko, M. Möller, H. -J. Cantow, S. N. Magonov in Polymer Bulletin (1993)

Article

Scanning force microscopy of nanofibrillar structure of drawn polyethylene tapes

Atomic force microscopy studies of drawn ultra high molecular weight polyethylene tapes were conducted under water, where the operating repulsive forces and the contact area between probe and sample are smalle...

A. Wawkuschewski, H. -J. Cantow, S. N. Magonov, S. S. Sheiko, M. Möller in Polymer Bulletin (1993)

Article

PVT-studies on polymeric and oligomeric compounds

The pressure dependence of transitions in perfluorododecyloctane-F12H8-and in perfluorododecylhexadecane-F12H16)-has been measured from 10 to 200 MPa, from room temperature up to 220° C. The two transitions withi...

H. Lill, B. Rudolf, H. -J. Cantow in Polymer Bulletin (1993)

Article

Atomic force microscopy on polymers and polymer related compounds

Results of Atomic Force Microscopy (AFM) on carbon fibers from polyacrylonitrile and pitch are presented in comparison with Scanning Electron Microscopy (SEM) and Scanning Tunneling Microscopy (STM) images. Si...

S. N. Magonov, A. Ya. Gorenberg, H.-J. Cantow in Polymer Bulletin (1992)

Chapter and Conference Paper

Characterization of the Polythiophene Surface by Scanning Tunneling Microscopy

Electrochemically prepared polythiophene (PT) films have been examined by Scanning Tunneling Microscopy (STM). In STM images at scales of hundreds of nanometers globular-type morphological patterns with a diam...

G. Bar, S. N. Magonov, H.-J. Cantow, T. Greczmiel… in Electronic Properties of Polymers (1992)

Article

Atomic force microscopy on polymers and polymer related compounds

Surface morphology and molecular arrangement have been recorded by atomic force microscopy (AFM) on polytetrafluoroethylene (PTFE) and on polycarbonate (PC) films. In a thin layer of PTFE deposited by rubbing ...

S. N. Magonov, S. Kempf, M. Kimmig, H.-J. Cantow in Polymer Bulletin (1991)

Article

Atomic force microscopy on polymers and polymer related compounds

Atomic Force Microscopy (AFM) images have been recorded from the surfaces of platelet type monocrystals of linear alkanes, n-tritriacontane, C₃₃H₆₈, and n-hexatriacontane, C₃₆H₇₄. Structural details have been rev...

W. Stocker, G. Bar, M. Kunz, M. Möller, S. N. Magonov, H.-J. Cantow in Polymer Bulletin (1991)

Article

Atomic force microscopy on polymers and polymer related compounds

The largest surfaces of lozenge-shaped monocrystals of polymer 2,4-hexadiynylene bis(p-fluorobenzenesulfonate), (pFBS), and its monomer have been studied by Atomic Force Microscopy (AFM). Tridimensional maps o...

S. N. Magonov, G. Bar, H.-J. Cantow, H.-D. Bauer, I. Müller… in Polymer Bulletin (1991)

Article

Atomic force microscopy on epitaxially crystallized isotactic polypropylene

Contact faces of thin films of α-phase isotactic polypropylene epitaxially crystallized on benzoic acid are examined by atomic force microscopy (AFM). The AFM images reveal the lamellar structure as well as th...

B. Lotz, J.-C. Wittmann, W. Stocker, S. N. Magonov, H.-J. Cantow in Polymer Bulletin (1991)