SYNTHESIS, CHARACTERIZATION AND FLOCCULATION BEHAVIOUR OF MULTI-ARM STARLIKE POLYMER
The multi-arm starlike cationic polyacrylamide (MSC-PAM) initiated by (NH4)2S2O8-NaHSO3 system was synthesized through free radical copolymerization of AM and DAC in aqueous solution, using PAMAM-AC as a dendritic multifunctional core. The PAMAM-AC was obtained by amidation of the amine-terminated full-generation polyamidoamine dendrimer (PAMAM) with acryloyl chloride (AC). The flocculation behavior of MSC-PAM on PCC suspension was evaluated in both single and microparticle systems. The results showed that MSC-PAM exhibited good flocculation efficiency for PCC by bridging mechanism. Although MSC-PAM had the ability to resist the shear, the flocs of PCC could be partly broken by higher shear. Nevertheless, the MSC-PAM could be used as cationic polymer to constitute a microparticle system in conjunction with anionic bentonite significantly improving the flocculation efficiency of PCC. And the MSC-PAM had a strong synergetic effect with CPAM as cationic polymer. Moreover, the MSC-PAM/ CPAM/bentonite microparticle system exhibited more excellent capability to resist the high shear.
multi-arm starlike polymer core-first method flocculation PCC synergetic effect
Fu Yingjuan Zhao Yanfeng Zhang Fengshan Li Jianhua Tan Yebang
Huatai Group Corp. Ltd., Dongying, 257335, China Shandong Institute of Light Industry, Jinan, 250353 Shandong Institute of Light Industry, Jinan, 250353,China Huatai Group Corp. Ltd., Dongying, 257335, China Shandong University, Jinan, 250100, China
国际会议
广州
英文
1829-1832
2010-11-08（万方平台首次上网日期，不代表论文的发表时间）