Approach of Electrostatic Interaction Based Layer-by-Layer Assembly of Cationic Guar Gum and Poly (Carboxylic acid)

Shibraen, Mahmoud Hassan MHD.Ali; Elaassar, Mohamed; Asad, Rabie Ahmed; Yagoub, Hajo; Shuguang, Yang

doi:10.21608/ejchem.2019.15950.1982

Approach of Electrostatic Interaction Based Layer-by-Layer Assembly of Cationic Guar Gum and Poly (Carboxylic acid)

Document Type : Original Article

Authors

¹ Textile Engineering, Faculty of Industries Engineering and Technology, Wad-Madni, Sudan

² Polymer Materials Research Dep, Institute of Advanced Technology And New Materials Research, City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, Alexandria, P.O.Box:21934, Egypt.

³ Department of Textile Engineering, Faculty of Industries Engineering and Technology , University of Gezira, Wad Madni P.O.Box 20, Sudan

⁴ State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, Donghua University, Shanghai 201620, China.

10.21608/ejchem.2019.15950.1982

Abstract

The present study evaluated the possibility to form thin film of cationic guar gum (CGG) associated with poly (carboxylic acid) such as carboxymethyl cellulose (CMC) and poly (acrylic acid) (PAA) through layer-by-layer (LbL) assembly. The thin film thickness and morphology show dependence on pH value, ionic strength and temperature. For pH 3 to pH 4 CGG and poly (carboxylic acids) assemble and form thin film through LbL. For neutral pH region and high pH values CGG and poly (carboxylic acids) do not interacted. In contrast to synthetic polyelectrolyte complex thin film, such as polystyrene sulfonate (PSS)/ poly (diallyldimethylammonium chloride) (PDDA) and PSS/ poly (allylamine hydrochloride) (PAH), the LbL assembly of CGG/CMC and CGG/PAA take place only at low salt concentrations. Deposition at high temperature (up to 60°C) results thicker CGG/ poly (carboxylic acids) films.

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