کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1384357 982401 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Novel cationic-modified salep as an efficient flocculating agent for settling of cement slurries
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Novel cationic-modified salep as an efficient flocculating agent for settling of cement slurries
چکیده انگلیسی

A new cationic flocculant was synthesized by graft copolymerization of acrylamide (AM) and 3-(methacryloylamino)propyl]trimethylammonium chloride (MAPTAC) onto salep using free radical polymerization initiated by ammonium persulfate (APS) to produce cationic salep [S-g-P(AM-co-MAPTAC)]. Reaction parameters (monomers/salep ratio, concentration of reactants, MAPTAC/AM ratio, and APS) were optimized using a full factorial experimental design to obtain the highest settling rate for cement suspensions. The best performing product was characterized by gel permeation chromatography (GPC), FTIR, 1H NMR spectroscopy, and thermogravimetric analysis (TGA). The resulted cationic flocculant may be introduced as a promising candidate for the green production of asbestos-free fiber cement products by Hatschek process.


► A new cationic salep was conveniently prepared and used for flocculation of cement.
► High salep/water and monomers/salep ratios are important synthesis parameters.
► Cationic charge was important for efficiency of flocculation at lower dosages.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 93, Issue 2, 2 April 2013, Pages 506–511
نویسندگان
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