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This work regards the digital representation of tangible and intangible dimensions of heritage crafts, towards craft preservation. Based on state-of-the-art digital documentation, knowledge representation and narrative creation approach are presented. Craft presentation methods that use the represented content to provide accurate, intuitive, engaging, and educational ways for HC presentation and appreciation are proposed. The proposed methods aim to contribute to HC preservation, by adding value to the cultural visit, before, and after it.

ZUS AMMENFASSUNG:Mit herkommlichen Verfahrenstechniken der Textilveredlung werden ausgewiihlte Cyclodextrinderivate iiber geeignete funktionelle Gruppen permanent auf verschiedenen Fasermaterialien fixiert. Einige der durch die Oberflachenmodifizierung beeinfluBten Eigenschaften der Polymeren werden im einzelnen diskutiert. Insbesondere kann fur mehrere Liganden gezeigt werden, daB die verankerten molekularen Hohlraume nicht die Faigkeit verlieren, hydrophobe organische Verbindungen zu komplexieren. Somit lassen sich durch den EinschluB spezifischer Wirksubstanzen spezielle funktionelle Eigenschaften erzielen. SUMMARYCyclodextrin derivatives may be fixed permanently onto different fibre surfaces by suitable functional groups using conventional technologies of textile processing. As a result of the modification process the properties of the polymers are influenced. Some examples are discussed in detail. For several ligands it is illustrated that the fixed cavities do not lose their complexing power. Thus, special functional properties can be obtained by the inclusion of specific active agents.

An experimental method was developed to determine the stability constants with nearly insoluble ligands in homogeneous solution. This method was tested using dibenzo crown ethers, which have a very low solubility in aqueous solution. The stability constants for the complexation of alkali and alkaline earth metal cations with different dibenzo crown ethers were determined in aqueous solution. Owing to the complex formation the total concentration of the ligand in solution increases. Dibenzo crown ethers absorb in the ultraviolet spectral range, hence the increase in the ligand concentration can be easily detected. Without the knowledge of the molar absorptivities of the ligands and of the corresponding complexes and of the solubilities, the stabilities of the complexes formed can be calculated under certain assumptions. To verify these assumptions, the solubilities of the dibenzo crown ethers and the molar absorptivities were determined. The kinetics of the solubilization process of the ligands was followed by spectrophotometric measurements.

Dye uptake of textile substrates can be described as time-dependent by a new mathematical model, in which the sorption process is divided into fast and slow subprocesses. The fast subprocess describes the adsorption of the dye onto the fiber surface, and the slow one details the diffusion of the dye into the fiber. In addition, dye desorption is simultaneously considered along with adsorption. Relating this concept to the dyeing process, it is possible to divide the process into two parts—dye adsorption and diffusion. The model is verified by dyeing cotton with direct dyes, but the results are also transferable to other fibers and dye classes. Using this model, optimum dyeing parameters and dye combinations can be determined from the sorption curves, which are easily obtained by UV-VIS spectrophotometry.