2,4,6-三羟基甲基苯酚和聚丙烯酰胺水溶性星形聚合物的合成、表征及应用

IF 2.9 4区化学 Q2 POLYMER SCIENCE

Polymer International Pub Date : 2014-01-15 DOI:10.1002/pi.4706

Krishna Kumar, Pubali Adhikary, S Krishnamoorthi

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引用次数: 11

摘要

以过硫酸钾为引发剂，采用自由基聚合法制备了2,4,6-三羟基甲基苯酚(THP)和聚丙烯酰胺(PAM)为基料的星形聚合物。以苯酚和甲醛为原料，采用Lederer - Manasse反应制备THP。通过改变丙烯酰胺单体的用量，合成了5种不同等级的星形聚合物(THP-PAM1 ~ THP-PAM5)。采用红外光谱、核磁共振光谱、热分析、粘度测量、扫描电镜和x射线衍射等方法对星形聚合物进行了表征。采用瓶法和沉降法研究了星形聚合物在高岭土悬浮液中的絮凝性能。并与市售絮凝剂和线性PAM进行了絮凝效果比较。用亚甲基蓝和各种商用纺织酸性染料进行了脱色试验。紫外可见光谱用于测定星形聚合物处理后高岭土悬浮液中染料的减少情况。©2014化学工业学会

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Synthesis, characterization and application of water-soluble star polymers based on 2,4,6-tris-hydroxymethyl phenol and polyacrylamide

The synthesis of star polymers based on 2,4,6-tris-hydroxymethyl phenol (THP) and polyacrylamide (PAM) was carried out by free radical polymerization using potassium persulfate as an initiator. THP was prepared from phenol and formaldehyde by the Lederer−Manasse reaction. Varying the amount of acrylamide monomer, five different grades of star polymer were synthesized (THP-PAM1 to THP-PAM5). The star polymers were characterized by infrared spectroscopy, NMR spectroscopy, thermal analysis, viscosity measurements, scanning electron microscopy and X-ray diffractometry. The flocculation performance of the star polymers was studied in kaolin suspension using the jar test and settling test methods. The flocculation efficiency of the star polymers was compared with commercially available flocculants and linear PAM. Several dye removal tests using methylene blue and various commercial textile acid dyes were performed. UV−visible spectra were employed to determine the reduced presence of dyes in the kaolin suspensions after treatment with star polymers. © 2014 Society of Chemical Industry

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来源期刊

Polymer International 化学-高分子科学

CiteScore

7.10

自引率

3.10%

发文量

135

审稿时长

4.3 months

期刊介绍： Polymer International (PI) publishes the most significant advances in macromolecular science and technology. PI especially welcomes research papers that address applications that fall within the broad headings Energy and Electronics, Biomedical Studies, and Water, Environment and Sustainability. The Journal’s editors have identified these as the major challenges facing polymer scientists worldwide. The Journal also publishes invited Review, Mini-review and Perspective papers that address these challenges and others that may be of growing or future relevance to polymer scientists and engineers.