Ph.D. Tezi Görüntüleme

Student:	Sedat Ondaral
Supervisor:	Prof.Dr. Mustafa USTA
Department:	Lif ve Kağıt Teknolojisi
Institution:	Graduate School of Natural and Applied Sciences
University:	Karadeniz Technical University, Turkey

Title of the Thesis:	The Synthesis of Water Soluble Cross Linked Polymers by Dispersion Polymerization and Their Performance in Various Applications in Papermaking
Level:	Ph.D.
Acceptance Date:	19/10/2007
Number of Pages:	161
Registration Number:	Di610

Summary:

In this study, the water soluble cross-linked cationic polymers were synthesized with

dispersion polymerzatin method and their applications were investigated. Acrylamide (Am)

The performances of some synthesized polymers in papermaking applications were investigated and results were compared with performances of poly-diallyldimethylammonium

chloride (P-DADMAC) and cationic polyacrylamide (KPAM). It was determined that P-31

and P-36 were better than P-DADMAC in kaolin retention and drainage of fiber-kaolin suspension. However, KPAM gave better results than all polymers. The synthesized polymers

were found to be effective in fixating the dissolved and colloidal materials onto fibers. QCMD

results showed that these polymers formed thicker layer onto SiO2 surfaces. Thus, larger amount of dissolved and colloidal materials adsorbed on polymeric layer. Additionally, the effects of polymers on strength of paper were examined and synthesized polymers gave better

paper strength than KPAM. Consequently, the experiments showed that water soluble crosslinked polymers were synthesized simply with dispersion polymerization and had advantageous over the linear polymers.

Key words: Dispersion Polymerization, Water Soluble Cross-linked Polymers, Retention,

Drainage, Dissolved and Colloidal Materials