What is nonionic polyacrylamide (NPAM) gel?

Nonionic polyacrylamide (NPAM) gel was prepared for in-depth profile control. A compact three dimensional network structure was formed in the bulk gel system. Retention, adsorption and bridging across the pore throats occur in high permeability zones. The NPAM gel shows superior high temperature resistant. °C.

Does high molecular weight cationic polyacrylamide prevent deposition of slit and river mud?

High molecular weight cationic polyacrylamides appear to give the best chances of preventing deposition of slit and river mud. High molecular weight cationic polyacrylamide was applied at low dosage rate (0.5 to 2 mg/l) on an irregular basis, and thus providing an economical form of treatment .

What are the different types of polyacrylamide adsorption?

In practice, however, this adsorption is often enhanced by using modified (anionic or cationic) forms of polyacrylamide. Polyacrylamide can be classified to three categories: non-ionic, anionic and cationic polyacrylamide. Keywords: Polyacrylamide; non-ionic; anionic; cationic; wastewater treatment. 1. INTRODUCTION

What are the three types of polyacrylamide?

Polyacrylamide can be classified to three categories: non-ionic, anionic and cationic polyacrylamide. Keywords: Polyacrylamide; non-ionic; anionic; cationic; wastewater treatment. 1. INTRODUCTION Polyacrylamides are used in the "thickening" process of colliery effluent treatment.

Why do polyacrylamides and polyacrylates have antifouling properties?

The strong surface hydration and the high surface packing density of polyacrylamides and polyacrylates are considered to be the key contributors to their antifouling property. In this article, we review our studies on the design and synthesis of a series of polyacrylamides and polyacrylates with different molecular structures.

How is non ionic polyacrylamide produced?

Non-ionic polyacrylamide may be produced from its monomer by free radical polymerization using a wide variety of initiation methods.