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Abstract

ABSTRACT:The current scenario was to study Polyelectrolyte complex. Polyelectrolyte complexes (PECs) represent a special class of polymeric compounds consisting of oppositely charged polyions that can have either cationic or anionic charges. Due to their charges they are hydrophilic, and normally water soluble, and can be used in a variety of applications, such as drug delivery, coatings, shampoos, or as flocculating agents in water treatment. These complexes avoid the use of chemical cross linking agent thereby to reducing the risk of toxicity. These complex formed is generally applied in different dosage form. A number of different, polymers are used to form polyelectrolyte complex. The present review emphasizes on the detail study on polyelectrolyte complex with their utility in drug delivery. INTRODUCTION:The new techniques of drug delivery which makes the system capable of controlling the rate of drug delivery, sustaining the duration of therapeutic action and most focused on targeting the drugs to the specific sites have aroused as revolution in pharmaceutical field, thereby giving rise to the novel drug delivery system.

Polyelectrolyte Complex Nanoparticles of Soluble Lignin and Chitosan as Interfacial Modifier

“…Polyelectrolyte complexes are self-assemblies that are formed as a result of the electrostatic interaction of oppositely charged polyelectrolytes [9], [10]. Much attention is paid to the study of reactions between oppositely charged polyelectrolytes since their study is of interest both from the fundamental and practical point of view.…”

“…Much attention is paid to the study of reactions between oppositely charged polyelectrolytes since their study is of interest both from the fundamental and practical point of view. The polyelectrolyte complexes can be regarded as advanced products due to the simplicity of their preparation technology and a wide range of possible applications, for example, in papermaking [11], production of binders [12], improvement of soil structure [13], medicine [10], etc. The driving force of the formation of polyelectrolyte complexes is the gain in entropy caused by the release of low-molecular ions due to the interpolyelectrolyte reaction.…”

High-Strength, Flexible, Hydrophobic, Sound-Absorbing, and Flame-Retardant Poly(vinyl alcohol)/Polyelectrolyte Complex Aerogels

“…Recently, there have been reports on using polyelectrolyte complexes (PECs) as flame-retardant additives for polymers and their composites. − PECs are a family of multicomponent polymeric materials formed by the ionic interactions between oppositely charged polyions. Usually, water-soluble polycations and/or polyanions have been utilized for the synthesis of PECs without the aid of cross-linking agents or catalysts. − At the industrial scale, PECs are used as flocculants for wastewater treatment, dewatering agents in papermaking, additives in detergents and cosmetics, and binders in the pharmaceutical industry. , Zhang et al demonstrated the applicability of PEC on ethylene-vinyl acetate copolymer as a green intumescent flame retardant . A water-soluble poly­(allylamine)-polyphosphate PEC that can extinguish flame was coated onto polyester-cotton fabric by Grunlan and co-workers, and the resultant coating was wash durable .…”

“…48−50 At the industrial scale, PECs are used as flocculants for wastewater treatment, dewatering agents in papermaking, additives in detergents and cosmetics, and binders in the pharmaceutical industry. 48,49 Zhang et al demonstrated the applicability of PEC on ethylene-vinyl acetate copolymer as a green intumescent flame retardant. 43 A water-soluble poly(allylamine)-polyphosphate PEC that can extinguish flame was coated onto polyester-cotton fabric by Grunlan and co-workers, and the resultant coating was wash durable.…”

Lignin-containing adhesion enhancer for wood-plastic composites

“…Other types of interactions, such as hydrogen bonding and hydrophobic interactions, can additionally contribute to the complexation process. Due to the manifested adhesive and sorption properties, PECs have great potential and multiple practical applications in various practical fields, namely, in medicine as drug deliverers (Lankalapalli and Kolapali 2009;Verma and Verma 2013), for obtaining binders (Yuan et al 2014), soil improving agents (Shulga et al 2001(Shulga et al , 2007, macrosurfactants (Shulga et al 2009), etc. One of the prominent applications of PECs is the improvement properties of cellulose fibers and inter-fiber bonding (Gärdlund et al 2003;Maximova et al 2005;Hubbe 2006;Gärdlund et al 2007;Hubbe et al 2008;Ankerfors et al 2009) in the papermaking process.…”