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The effect of structural organization on the mechanical strength of poly(vinyl alcohol) gels
Author(s) -
Hnát Vladimír,
prokopová Eva,
Raab Miroslav
Publication year - 1991
Publication title -
makromolekulare chemie. macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 0258-0322
DOI - 10.1002/masy.19910410120
Subject(s) - vinyl alcohol , ultimate tensile strength , toughness , materials science , aqueous solution , composite material , adhesive , network structure , mechanical strength , polymer chemistry , chemical engineering , polymer , chemistry , organic chemistry , layer (electronics) , machine learning , computer science , engineering
Ultimate mechanical properties of poly(vinyl alcohol) adhesive layers prepared from fresh aqueous solution, aged solution and water‐swollen PVA particles are compared. Tensile strength and toughness of dry adhesive layers significantly increase in the cited order. These differences may be attributed to the formation of heterogeneous thermoreversible network upon ageing and to the presence of heterogeneities in PVA gel which act as barriers against crack propagation.