| Titre : |
Polymer-leather composites VII. Morphological and mechanical properties of selected acrylate-leather composite materials |
| Type de document : |
texte imprimé |
| Auteurs : |
Edmund F. Jordan, Auteur ; Bohdan Artymyshyn, Auteur ; Alfred E. Everett, Auteur ; Robert J. Caroll, Auteur ; Mary V. Hannigan, Auteur ; Stephen H. Feairheller, Auteur |
| Année de publication : |
1982 |
| Article en page(s) : |
p. 508-532 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
Morphological, mechanical, and water absorptive properties were obtained for the same polymer-leather composite materials whose preparation was described in the preceding paper. Light microscopy and scanning electron microscopy (SEM) were used to obtain micrographs of cross-sections of the composites and of their negative replicas. The latter consisted of isolated continuous polymer phase of the methyl methacrylate composites imprinted with the histological features of the parent leather. These replicas were obtained by hydrochloric acid digestion of the collagenous material from the composites, leaving behind the undisturbed polymer phase. Both light and SEM micrographs revealed that polymer was packed mostly in coarse, tight domains around individual fibers in fiber bundles, thus impeding fiber movement on deformation. Some polymer xas found in the vicinity of fibrils in the composites prepared from emulsions. Little protection from static imbibed water was afforded by either method of composite preparation (emulsion or bulk-solution), although rates for the latter were retarded. The relative stiffness of each composite compared to its untreated control, regardless of the modifying polymer introduced, increased with increase in polymer composition level to about 20 percent; thereafter the extent of stiffness depended on the inherent stiffness of the modifying polymer at ambient temperature. Relative stiffness could be decreased between 45 and 65 percent by staking and fatliquoring similarly prepared n-butyl acrylate (BA) + methyl methacrylate (MMA) composite materials containing 18 to 30 percent polymer. Relative tensile stregths declined with polymer increase in the order MMA > BA > BA + MMA. |
| Note de contenu : |
- EXPERIMENTAL : Materials and procedures - Matching hide study
- RESULTS AND DISCUSSION : Morphology - Water absorption - Mechanical properties at ambient temperature - The effect of temperature on mechanical properties - the effect of fatliquoring and staking on mechanical properties |
| En ligne : |
https://drive.google.com/file/d/1WFcOQ6tjccdUL5cKfwbYKbzSsXYPeLl0/view?usp=share [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17503 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. XXVII (Année 1982) . - p. 508-532
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Polymer-leather composites VII. Morphological and mechanical properties of selected acrylate-leather composite materials in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. XXVII (Année 1982)
