Cellulose-Based Flocculant

The utilization of cellulose as raw materials for flocculant is mainly divided into two major categories [i] modified cellulose, [ii] cellulose-based flocculant. 

The flocculant based on cellulose can be generally classified into four major groups [i] cationic cellulose-based-flocculant, (ii) anionic cellulose-based flocculant [41], (Hi) amphoteric cellulose-based flocculant, (iv) nonionic cellulose-based flocculant [42] as follows ... 

This isoindoline nickel complex pigment is mainly recommended for the coloration of metallics and effect coatings, especially for water based systems. P.R.271 affords yellowish to medium red shades, providing a bright flop in metallics. Alkyd/melamine resin systems may safely be overcoated and withstand exposure of 140°C for 30 minutes. The flow properties of P.R.271 in these systems and in polyester cellulose acetobutyrate base coat systems are good, but there is a certain tendency to flocculate. 

Gao, J., and Tang, L. (1996) Cellulose science. Science Press, Beijing, Ghimici L., Nichifor M. (2010). Novel biodegradable flocculating agents based on cationic amphiphilic polysaccharides. 

This book presents coverage of the dynamics, preparation, application and physico-chemical properties of polymer solutions and colloids. It also covers the adsorption characteristics at and the adhesion properties of polymer surfaces. It is written by 23 contemporary experts within their field. Main headings include Structural ordering in polymer solutions Influence of surface Structure on polymer surface behaviour Advances in preparations and appUcations of polymeric microspheres Latex particle heterogeneity origins, detection, and consequences Electrokinetic behaviour of polymer colloids Interaction of polymer latices with other inorganic colloids Thermodynamic and kinetic aspects of bridging flocculation Metal complexation in polymer systems Adsorption of quaternary ammonium compounds art polymer surfaces Adsorption onto polytetrafluoroethylene from aqueous solutions Adsorption from polymer mixtures at the interface with solids Polymer adsorption at oxide surface Preparation of oxide-coated cellulose fibre The evaluation of acid-base properties of polymer surfaces by wettability measurements. Each chapter is well referenced. 

The PLA layered silicate nanocomposites were prepared by adding small amounts of the compatibilizer to form the randomly distributed intercalated silicate layers. Simple melt extmsion of PLA and organically modified montmorillonite lead to better parallel stacking of silicate layers and much stronger flocculation due to hydroxylated edge-edge interactions of silicate layers and consequently improved mechanical and barrier properties, which makes it suitable for food packaging applicatioa Fmther, Bondeson et al. used melt extmsion to fabricate a transparent bio-based nanocomposite of 5 wt% cellulose nanowhiskers (CNW) and cellulose acetate butyrate (CAB), plasticized by triethyl citrate (TEC) (2007). 

Retention aids are necessary to coagulate and flocculate the pulp and to avoid losses due to fibers, fillers and additives passing through the mesh of the forming screen. ->Cationic starches are the only RR-based polymers used to retain mineral fillers and cellulose-reactive sizes. The market is dominated by polyacrylamide, which is applied as W/O emulsion. The aqueous polymer solution is dispersed in kerosene, the substitution of which by RR-based oils (e. g., rape seed oil) is subject of intensive investigations. 

---