文献类型：期刊文献

英文题名：Novel, rosin-based, hydrophobically modified cationic polyacrylamide for kaolin suspension flocculation

作者：Zhang, Haibo[1,2] Jiang, Jianxin[2] Shang, Shibin[1] Song, Zhanqian[1] Song, Jie[3]

第一作者：Zhang, Haibo;张海波

通信作者：Shang, SB[1]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forestry Prod, Natl Engn Lab Biomass Chem Utilizat,Key Lab Fores, State Forestry Adm,Key Lab Biomass Energy & Mat, Nanjing 210042, Jiangsu, Peoples R China;[2]Beijing Forestry Univ, Coll Mat Sci & Technol, Engn Res Ctr Forestry Biomass Mat & Bioenergy, Minist Educ, Beijing 100083, Peoples R China;[3]Univ Michigan, Dept Chem & Biochem, Flint, MI 48502 USA

年份：2018

卷号：135

期号：33

外文期刊名：JOURNAL OF APPLIED POLYMER SCIENCE

收录：;EI(收录号：20182005184356);Scopus(收录号：2-s2.0-85046732952);WOS:【SCI-EXPANDED(收录号:WOS:000434123100020)】；

基金：This work was financially supported by the National Nature Science Foundation of China (project 31470597), the Central Special Foundation for Basic Research in the Public Interest of the Chinese Academic of Forestry (contract grant number CAFYBB2016QB014), and the Discipline Group Construction Project of the Chinese Academic of Forestry/Institute of Chemical Industry of Forest Products (contract grant number LHSXKQ1).

语种：英文

外文关键词：copolymers; hydrophilic polymers; polyelectrolytes; rheology; viscosity and viscoelasticity

摘要：A novel, hydrophobically modified cationic polyacrylamide (HMPAM) was synthesized via the copolymerization of acrylamide, diallyl dimethyl ammonium chloride (DMDAAC), and diallylmethyl dehydroabietic acid propyl ester ammonium bromide. Optimum conditions for preparing HMPAM were such that the amount of initiator was 0.075 wt % of the total monomer mass, the monomer concentration was 20 wt %, and the amount of DMDAAC was 18 mol % of the total monomer molar mass. HMPAM was characterized with an UV-visible spectrometer, H-1-NMR, Ubbelohde viscometer, rotational viscometer, and rotational rheometer. HMPAM solutions exhibited strong hydrophobic associations, and the critical association concentration of the HMPAM aqueous solution was about 0.7 wt %; the HMPAM solutions also showed salt thickening and shear resistance. The surface morphologies of the freeze-dried HMPAM samples (1 wt %) were also observed via scanning electron microscopy. Compared with unmodified cationic polyacrylamide, Synthesis of HMPAM-0.5 exhibited a stronger flocculation capacity, and the optimal transmittance of the supernatants was above 95%. HMPAM-0.5 showed significant flocculation performances for 3-4 and 3-5 wt % kaolin suspensions at 40 and 50mg/L, respectively. Moreover, the flocculation performance was enhanced with the addition of NaCl and CaCl2. (c) 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46637.