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Cation基의 분포가 다른 Cationic Polyacrylamides(C-PAM)의 펄프에의 흡착성 : 흡착시간의 영향에 대하여
朴成培,趙鍾洙,尹承洛,田中浩雄 진주산업대학교 농업기술연구소 1999 農業技術硏究所報 Vol.12 No.-
The adsorption of two cationic polyacrylamides (C-PAM), with similar molecular weights (MW) 5.3·10^5 and 5.1·10^5 and charge density (CD) 1.19 and 1.25 meq/g but with different distribution of cationic groups respectively has been studied. There are two kinds of substrates ; one is cellulose fiber without fine fraction, and the other is cellulose fibers with fine fraction. At the stirring speed used, the adsorption of these C-PAMs onto cellulose fibers was rapid regadless of cationic distribution, and the adsorption amount of C-PAM with homogeneous cationic distribution was a little greater than that with heterogeneous cationic distribution. This small difference is probably due to the existence of irregularities on the surface of cellulose fibers and the greater diffusion of the C-PAM with homogeneous cationic distribution. That only a small difference is observed is due primarily to the strong attraction between opposite charges. The adsorbed amounts of C-PAM gradually increased both for cellulose fibers, most rapidly for Cellulose fibers with fine fraction and most slowly for Cellulose fibers without fine fraction. These results can be attributed to the porous nature of the cellulose fibers and the adsorption area of the fine fraction.