Polymer-leather composites

POLYMER-LEATHER COMPOSITES V. PREPARATIVE METHODS, KINETICS, MORPHOLOGY, AND MECHANICAL PROPERTIES OF SELECTED ACRYLATE POLYMER-LEATHER COMPOSITE MATERIALS... 

Fig. 14. Scanning electron micrographs (SEM) of cross sections of bound polymer-leather composites, prepared in emulsion (Table V), insert a, and the corresponding replica, insert b, prepared by hydrochloric acid etching, showing the effect of removing the collageneous material, selected from similar regions of the corium. The scale is 10 pm.

The effect of temperature on the mechanical response of the polymer-leather composites remains to be treated. In Figure 20 are shown the torsional modulus-temperature curves for the three... 

T. + 50 C, moduli of the starting leathers were approached. This shifting of moduli appears to result from the free space retained by each composition, as discussed in section A. This adds a porosity term (5e) to the moduli of each material. The fact that each phase was continuous, as seen in section C, and characterized by only weak interaction between phases further contributed to moduli residing between those of the starting materials. This permitted the mechanical response of the polymer-leather composites to shift from predominately plastic to predominately leather character as temperature rose. 

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