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Introduction of polymers into fibrous structures by solution impregnation
Author(s) -
Rigdahl M.,
Westerlind B.,
Hollmark H.,
De Ruvo A.
Publication year - 1983
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1983.070280505
Subject(s) - vinyl alcohol , vinyl acetate , acetone , aqueous solution , polymer , materials science , polymer chemistry , network structure , elongation , cellulose , cellulose acetate , chemical engineering , vinyl polymer , composite material , ultimate tensile strength , chemistry , organic chemistry , polymerization , copolymer , machine learning , computer science , engineering
Dry‐formed networks of cellulose fibers, produced with a laboratory device, have been impregnated with aqueous solutions of poly(vinyl alcohol) or solutions of poly(vinyl acetate) in acetone. In both cases, the strength and stiffness of the networks increase several times compared with the unmodified structure. When aqueous solutions are used, it appears that a minimum amount of poly(vinyl alcohol) is required (ca. 2 wt %) to increase the strength appreciably, but when poly(vinyl acetate) dissolved in acetone is used, as a binder, the strength improves even at the lowest level of polymer addition. For the systems studied here, the elongation at rupture increased with increasing polymer concentration. In most cases, the amount of polymer in the network structure was less than 10 wt %. Some results from impregnations using other polymeric systems, e.g., latices, are also reported.