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Study on modification and ice water resistance of PVA label adhesive
Author(s): 
Pages: 29-32
Year: Issue:  6
Journal: China Adhesives

Keyword:  polyvinyl alcohol(PVA)label adhesivemodificationice water resistancealuminum sulfate;
Abstract: With aluminum sulfate as inorganic crosslinker,starch as dispersing agent,a modified PVA(polyvinylalcohol)label adhesive with environmental protection non- toxic and low cost was prepared. With ice waterresistance as evaluation index,the optimal process conditions of preparing modified PVA label adhesive werepreferred by single-factor experiment. The research results showed that the combination property of modified PVAlabel adhesive was obviously improved(its appearance with colourless-translucent and sticky liquld,viscosity at85 Pa·s,freezing point at 3 ℃,pH at 6.8,and shelf life at 240 d),and it had good ice water resistance(contactangle from 50.39° to 86.32°)when mass fraction of PVA was 20% in water,aluminum sulfate and starch were 4 gand 8 g respectively,reaction temperature and reaction time were 85 ℃ and 3.0 h respectively.
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