Zur Adhäsion von polymeren. Fortschrittsbericht

Abstract

Nach einem Uberblick iiber die Theorie der Adhasion und die Methoden zur Haftkraftmessung werden Moglichkeiten zur experimentellen Bestimmung der Adhasionskonstanten von Polymeren dargestellt. Es werden die Ergebnisse von Untersuchungen mitgeteilt, die die Bestimmung der VAN-DER-WAALS-HAMAKER-Konstanten faserbildender Polymere sowie die Erfassung des Anteils polarer Krafte bei der Haftung von Faserstoffen zum Gegenstand haben. EF adzeauu nonuaepos. O630p nOCJIe 06BOpa 0 TeOpHH anre3MH H MeTOAaX ee 113MepeHHX PaCCMaTpllBaIoTCR BOBMOHEHOCTH 3KCIIepHMeHTaJIbHOrO OIIpeneJIeHHR KOHCTaHT anre3HU IIOJIHMepOB. nPHBOnXTCR AaHHJJe, IIOJIyyeHHbIe IIpH HCcenOBaHHRX IIO OIIpeneJIeHHIo KOHCTaHTbI BAH~EPBAAJICA-XAMAKEPA B O J I O K H O O~~~~~I~I~M X IIOJIHMepOB I4 OqeHKe AOJIH IIOJIXpHbIX CLlJI IIpM anlX3HM BOJIOKOH. Adhesion of polymers. ReviewThe theory and measuring methods of adhesion are surveyed and the techniques of experimental determination of adhesion constants of polymers are discussed. The results of investigations dealing with the determination of the VAN DER WAALS-HAMAKER constant of fibreforming polymers and the contribution of polar forces to the adhesion of fibres are described.

Problems and results of zeta-potential measurements on fibers

“…(65) and (66)) result from ion-molecule interaction. The relation between A and ~max may be used to explain the dependence of adhesion properties of fibers on Gax in KC1 solutions [29][30][31]. The relation between ~" and forces -~0 due to polar or dissociable groups is difficult to investigate, since polarity of the surface will influence water adsorption and swelling.…”

“…Such phenomena, as electroviscous effects, volume and rate of sedimentation, uptake of Wood origin, pulping process, bleaching [1][2][3][4] Relations between zeta-potential and flocculation, sizing, retention and uptake of additives, [1][2][3][4][5][6][7][8][9][10] explanation of additives action, relation between zeta-potential and stability of paper Adsorption of dyestuffs and additives in dependence on zeta-potential [11][12][13][14][15][16][17][18][19][20][21][22] Uptake of additives by electrostatic forces, explanation of their action [23-25] Characterization of antistatic agents, lubricants etc. by means of instationary zeta-potential, [26][27] uptake and effect of processing additives [23][24][25]28] Adhesion of soil particles on fibers, adhesion of polyester resins on glass fibers, [29][30][31][32] soiling of felts used in paper-making [33] Investigations on mechanism of washing [34-38] Influence of origin and processing on zeta-potential [39][40][41]116] Influence of wool processing on zeta-potential [42][43] *) Dedicated to Prof. Dr. F. R. Schwar...…”