Synthesis of 4-Arm Starlike Cationic Polymer and its Application as Fixing Agent for Dissolved and Colloidal Substances

Abstract:

A range of novel cationic starlike polymers (poly(Pen-g-MeDMA) were synthesized through atom transfer radical polymerization (ATRP) by core-first method. The tetrafunctional initiator (Pen-Br) was prepared by esterification of pentaerythritol with 2-bromoisobutyryl bromide. [2-(methacryloyloxy)ethyl] trimethyl ammonium chloride (MeDMA) was polymerized in H₂O/EtOH medium using Pen-Br, Cu(I)Br, 2,2-dipyridine as an initiator, catalyst, and ligand respectively. The results indicated that the cationic charge density of the poly(Pen-g-MeDMA) were high and pH-insensitive. The poly(Pen-g-MeDMA) could be used as a cationic fixing agent to remove dissolved and colloidal substances from pulp, markedly improving the efficiency of retention aids.

• Periodical: Advanced Materials Research (Volumes 233-235)
• Pages: 128-131
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.233-235.128
• Online since: May 2011
• Authors: Qian Yang, Ying Juan Fu, Meng Hua Qin
• Keywords: ATRP, DCS, MeDMA, pH-Insensitive, Retention, Starlike Cationic Polymer

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