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Showing 1 to 10 of 10 for “"cross-linked polymers"”.
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Rheology Of Cross-Linked Polymers And Polymer Foams: Theory And Experimental Results
<p>Typical polymers have a time-dependent response to loading which results in stress relaxation or creep. Models using springs/dashpots or Volterra integrals are capable of predicting the material response, but place little or no emphasis on the reasoning behind the response. This research …
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Surface mechanics of polyacrylamide hydrogels following wear
… are measured. These polyacrylamide hydrogels – cross-linked polymers consisting of 92% water by mass – undergo surface wear, and their surface elastic properties before and after wear are measured. Quasi-static nanoindentations are performed on the surface using a colloidal probe in an atomic …
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Synthesis and characterization of conducting polymers with new architectural motifs
… affected the overall properties of the resulting polymers. The n-linked thiophene monomers produced highly cross-linked polymers and the electroactivity of these polymers depended on the length of the thiophene fragment in the corresponding monomer. The a-linked thiophene monomers produced …
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The Development and Evaluation of Novel Techniques for the Study of Polymerisation and Degradation Reactions
… a polymer system capable of undergoing rapid cross linking reactions in thin film. The development and application of a novel technique is described by means of which rapid rates of polymerisation and cross linking can be measured in thin film. In addition the results of synthetic work are …
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Examination of the Aging Properties of Novel Cyanate Ester Thermosets and the Subsequent Evaluation of the Material under Application Conditions
… application conditions for this class of cross-linked polymers. Using the techniques established above, a model cyanate ester resin was selected based upon its chemical simplicity and availability. AroCy® B-10 cyanate ester resin manufactured commercially by Ciba-Geigy was evaluated for …
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Dynamic remodeling and rapid manufacturing of functional materials by ring-opening metathesis polymerization
… room temperature to afford mechanically robust, cross-linked polymers; at slightly elevated temperatures, the resulting polymers readily depolymerize to a free-flowing liquid. This polymerization-depolymerization process, characterized by thermal analysis and rheological tests, is triggered …
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Oberflächengebundene Polymernetzwerke zur Re-endothelialisierung von procinen Herzklappenbioprothesen
Herzklappenbioprothesen werden mit Glutardialdehyd behandelt und für die Implantation herangezogen. Der Nachteil dieser Klappen besteht in einer progressiven Calcifizierung, was im Versagen der Protehese mündet. Um die Verkalkung zu verringern wurden dünne Polymerfilme photochemisch an die …
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Linear and Cross-linked UCST-Type Polymers : Synthesis and Properties
Thermoresponsive polymers are well studied and applied in both scientific and industrial areas. Among them, polymers with lower critical solution temperature (LCST)-type thermoresponsivity were extensively investigated. However, in some applications polymers with upper critical solution temperature …
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Non-invasive drug delivery to the posterior segment of the eye: Development of formulation strategies and evaluation of ocular distribution and pharmacological activity
… Ion exchange resins (IR) are water insoluble cross linked polymers with ionizable groups that can be exchanged to form complexes. Diclofenac sodium (DFS) was used as a model drug. The goal of this study was to develop polymeric matrix films loaded with a combination of free diclofenac sodium …