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http://dx.doi.org/10.7317/pk.2013.37.6.730

Physical Properties of Poly(vinyl alcohol) with Polyamide-epichlorohydrin as a Wet Strength Additive for Paper  

Jang, Yunjae (Center for Photofunctional Energy Materials, Dept. of Polymer Science and Engineering, Dankook University)
Lee, Hwaljong (TNF Corp.)
Kang, Ho-Jong (Center for Photofunctional Energy Materials, Dept. of Polymer Science and Engineering, Dankook University)
Publication Information
Polymer(Korea) / v.37, no.6, 2013 , pp. 730-735 More about this Journal
Abstract
The physical properties of poly(vinyl alcohol) (PVA) with polyamide-epichlorohydrin (PAE) for wet strength additives in paper industry were investigated. Upon introducing PAE to PVA, not only melting and crystallization enthalpy in DSC but also the area of diffraction peaks in XRD decreased, which represented the fact that PAE acted as a crosslinking agent for PVA. However, this crosslinking seemed to be physical crosslinking having relatively less bonding energy compared to chemical crosslinking since the crystallization in PVA was able to take place by thermal annealing. This physical crosslinking and crystallization by thermal annealing enhanced the thermal stability and mechanical strength in PVA and consequently, these improvements are desired in the paper manufacturing process to increase the dry and wet strength in the paper.
Keywords
polyamide-epichlorohydrin; poly(vinyl alcohol); crosslinking; crystallization; wet strength in paper;
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