Zobrazeno 1 - 10
of 152
pro vyhledávání: '"W. Borchard"'
Autor:
W. Borchard
Publikováno v:
Journal of Polymer Science: Polymer Symposia. 44:153-162
An optical-mechanical device is described with which the length of a gel and the transmitted light can be registered. The swelling curves of gels of the crosslinked polystyrene in cyclohexane have been measured in the temperature range from 10 to 70
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::32024aa9cda893c9d2546236db9f199b
https://doi.org/10.1002/polc.5070440118
https://doi.org/10.1002/polc.5070440118
Autor:
A. Ruttscheid, W. Borchard
Publikováno v:
European Polymer Journal. 41:1927-1933
By embedding hollow glass spheres of different sizes and densities into a matrix of crosslinked sodium polyacrylate, superabsorbent polymers were synthesized using a water-in-oil suspension polymerization. These glass-containing superabsorbents were
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ac7f2fecf60ef3da571c1dbd468038ff
https://doi.org/10.1016/j.eurpolymj.2004.09.005
https://doi.org/10.1016/j.eurpolymj.2004.09.005
Publikováno v:
European Polymer Journal. 39:1809-1816
A general thermodynamic equation for the swelling of a cross-linked polymer system in the vapour of a swelling agent has been derived under isothermal and isobaric conditions. The equation is used to describe the equilibrium uptake of water by elasto
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a1d1442979eecd90d5c2485196806293
https://doi.org/10.1016/s0014-3057(03)00092-2
https://doi.org/10.1016/s0014-3057(03)00092-2
Autor:
A. Straatmann, W. Borchard
Publikováno v:
European Biophysics Journal. 32:412-417
Alginates are polysaccharides consisting of beta-D-mannuronate and alpha-L-guluronate units. In the presence of bivalent cations like calcium the guluronate blocks form physically cross-linked gels. The gelation properties of alginates play an import
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::04b109f55881d5a4f2fc7e3796f3790a
https://doi.org/10.1007/s00249-003-0298-7
https://doi.org/10.1007/s00249-003-0298-7
Autor:
W. Borchard, T. Windhues
Publikováno v:
Carbohydrate Polymers. 52:47-52
Static light scattering measurements were performed to investigate the effect of acetylation on the physico-chemical properties of alginates in salt solutions from different sources. Although chemical acetylation reduces the molar mass of algal algin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::36d2a699780f3ee6163f4745a5a06636
https://doi.org/10.1016/s0144-8617(02)00265-5
https://doi.org/10.1016/s0144-8617(02)00265-5
Autor:
E. Selic, W. Borchard
Publikováno v:
Macromolecular Chemistry and Physics. 202:516-520
A new apparatus is described allowing the determination of the volume degree of swelling of micro-particles as a function of time by on-line detection. The tested superabsorbent materials show anomalous diffusion and may be characterized by the rate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0371f4c8185e45952488957bd3593aed
https://doi.org/10.1002/1521-3935(20010201)202:4<516::aid-macp516>3.0.co
https://doi.org/10.1002/1521-3935(20010201)202:4<516::aid-macp516>3.0.co
Publikováno v:
Thermochimica Acta. 333:87-93
In the present paper the thermal behaviour of amber and a resin of a pine tree has been investigated with the aim to show a correlation between the age of amber and its thermal behaviour. The thermal analysis of samples have been performed using a di
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9f600cfd4747f66b594fdd59625bb356
https://doi.org/10.1016/s0040-6031(99)00101-x
https://doi.org/10.1016/s0040-6031(99)00101-x
Autor:
M.D. Lechner, W. Borchard
Publikováno v:
European Polymer Journal. 35:371-376
An improved Hermans–Ende equation for real solutions has been derived in order to calculate the density as a function of the radial distance in a density gradient mixture (components of low and high density) inside an ultracentrifugal cell. The equ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4225c1ba626a7b25ee3aac34ed7a6a0a
https://doi.org/10.1016/s0014-3057(98)00134-7
https://doi.org/10.1016/s0014-3057(98)00134-7
Autor:
M Lechtenfeld, W Borchard
Publikováno v:
Physical Chemistry Chemical Physics. 1:3129-3134
In the present paper, the thermoreversible gelation of organic liquids emulsified in an aqueous phase using gelatin as gelling agent has been investigated. After steplike cooling of a dispersion of oil, water, soap and gelatin from 45 to 26°C strong
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::40e36dcc5435265c5216b7744089749f
https://doi.org/10.1039/a901573f
https://doi.org/10.1039/a901573f
Autor:
W. Borchard
Publikováno v:
Berichte der Bunsengesellschaft für physikalische Chemie. 102:1580-1588
In a short survey chemical and physical aspects characterising thermoreversibly gelling systems are gathered. Rheological properties of the system gelatin/water for different polymer concentrations at various temperatures and varying angular frequenc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4d8f3255d9fda4a2d7a43b558514167f
https://doi.org/10.1002/bbpc.19981021115
https://doi.org/10.1002/bbpc.19981021115