preparation of acrylamide-based anionic polyelectrolytes for soil establishment
نویسندگان
چکیده
synthetic water soluble acrylamide-based polymers have wide range of ap-plications in the feld of soil establishment and non-desertifcation. in this research, the acrylamide-based anionic polyelectrolytes were prepared by solution polymerization. the polymerization was carried out using aibn as a radical initiator and at different degrees of anionic charges ranging between 10% and 30% using sodium hydroxide as hydrolyzing agents. the chemical structure of the synthetic polymers was studied and confrmed by ftir technique. the charge density on polymer backbone was determined by titration method. the rheological behavior of polymer solutions was evaluated by brookfeld viscometer. the results show that the viscosity decreases with increasing the shear rate of solutions. molecular weights of samples were measured by laser light scattering analyzer. the morphology of the polymer was studied by sem and the edx was used for elemental analysis determination. the anionic polymers with 10-30% negative charges were mixed with clay in order to evaluate the soil establishment. the results show that an anionic polyelectro-lyte can make soil particles more cohesive and improve soil physical properties.
منابع مشابه
application of upfc based on svpwm for power quality improvement
در سالهای اخیر،اختلالات کیفیت توان مهمترین موضوع می باشد که محققان زیادی را برای پیدا کردن راه حلی برای حل آن علاقه مند ساخته است.امروزه کیفیت توان در سیستم قدرت برای مراکز صنعتی،تجاری وکاربردهای بیمارستانی مسئله مهمی می باشد.مشکل ولتاژمثل شرایط افت ولتاژواضافه جریان ناشی از اتصال کوتاه مدار یا وقوع خطا در سیستم بیشتر مورد توجه می باشد. برای مطالعه افت ولتاژ واضافه جریان،محققان زیادی کار کرده ...
15 صفحه اولDeflocculation of Cellulosic Suspensions with Anionic High Molecular Weight Polyelectrolytes
Pulp fibers have a strong tendency to form flocs in water suspensions, which may cause their undesirable distribution in the paper sheets. This flocculation can be controlled by adding, e.g., an anionic high molecular weight polyelectrolyte in the fiber suspension. The objective of this study was to investigate the effect of anionic polyelectrolytes on deflocculation kinetics, dewatering, and r...
متن کاملexploring motivation and english test preparation strategies of iranian pre-university candidates during and at the end of test preparation period for konkur examination
the current study aimed at investigating the relationship between motivation and test preparation strategies (tpss) used by iranian pre-university students in their preparation period for the university entrance exam (uee). due to the importance of uee in iran, this study also attempted to show its impact on these two important variables. to this end, 100 pre-university students in an iranian p...
Isolation and Identification of Acrylamide Degrading Bacteria from Soil
Acrylamide is an aliphatic amide, which is produced by industrial processes and during heating of food. It is neurotoxic and a suspected carcinogen. In the present study an attempt was made to isolate acrylamide degrading bacteria from soil. The optimum growth conditions and physiological characteristics for the isolated acrylamide degrading bacteria were investigated. The isolated bacterium wa...
متن کاملEffect of Dendrigraft Generation on the Interaction between Anionic Polyelectrolytes and Dendrigraft Poly(l-Lysine)
In this present work, three generations of dendrigraft poly(L-Lysine) (DGL) were studied regarding their ability to interact with linear poly (acrylamide-co-2-acrylamido-2-methyl-1propanesulfonate) (PAMAMPS) of different chemical charge densities (30% and 100%). Frontal analysis continuous capillary electrophoresis (FACCE) was successfully applied to determine binding constants and binding stoi...
متن کاملمنابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
علوم و تکنولوژی پلیمرجلد ۲۴، شماره ۴، صفحات ۲۹۱-۳۰۰
میزبانی شده توسط پلتفرم ابری doprax.com
copyright © 2015-2023