Critical Association Concentration of Dansyl-Poly (acrylic acid) Synthetized by Redox Polymerization Followed by an Esterification in Aqueous Solution: Spectrophotometric and Tensiometric Studies

Fateh Eltaboni1,* Abdelkader Imragaa1, Mansour Khuzkhaz1, Nada Ali1, Naziha Baayu

1Chemistry Department, Faculty of Science, University of Benghazi, Benghazi, Qar Yunis, Libya

DOI: 10.5185/amlett.2019.0006

Publication Date (Web): May 10, 2019

Corresponding author: Tel: (+218) 945044502; E-mail: feltaboni@gmail.com  

Abstract

In the present work, the critical concentration for self-assembly of dansyl-polyacrylic acid (DANS-PAA) in aqueous solution has been characterized by a combination of spectrophotometric and tensiometric techniques, number average molar mass, degree of polymerization, and average number of bonds were also determined. The normalized absorbance value for DANS-PAA (10-4 wt%) as a function of PAA concentration was at maximum below a critical self-assembly concentration (CAC) of 0.0005 g·mL−1 and decreased dramatically with PAA concentration above this CAC. This supposes that upon adding more polymer, assembly occurs in a short concentration range about 0.0005 g·mL−1. Similarly, surface tension measurements for DANS-PAA decreased markedly with concentration after a threshold of around 0.0005 g·mL−1, above which it remained constant at ca. 20 dyne·cm−1. Consequently, the binary techniques produced an equivalent estimation of the CAC. Additionally, surface tension studies showed that the DANS-PAA polymer miscible with water caused surface tension to decrease by 49 % over a concentration range of 0 to 0.0014 g·mL−1, whereas marked reduction in surface tension (33 %) upon adding PAA, and slight decreasing (7%) was recorded upon adding acrylic acid monomer (AA) to water.

Keywords

Polyacrylic acid, dansyl-poly (acrylic acid), redox polymerization, absorbance, surface tension

Current Issue

Cloud Medicine set to Revolutionize Doorstep Personalized Healthcare


Various surfactants for 0 – 3 dimensional nanocarbons: Separation, exfoliation and solubilization


Polypyrrole based biofunctional composite layer for bioelectrocatalytic device system


Innovative Graphene-PDMS sensors for aerospace applications 


Effect of hot drawing process and carbonization temperature in electrochemical behavior of electrospun carbon nanofibers


Chemical Reactivity and Electronical Properties of Graphene and Reduced Graphene Oxide on Different Substrates


Laser Raman micro-spectroscopy as an effective non-destructive method of detection and identification of various sp2 carbon modifications in industry and in nature


Electrochemical promotion of ammonia synthesis with proton-conducting solid oxide fuel cells


Biomimetic surfaces with hierarchical structure using microsized texture and nanosized Cu particles for superhydrophobicity


Enhancement the properties of high and low-density polyethylene membranes by radiation grafting process


Synthesis of 9-Aminoacridine and its Application as an Anode Material for Aqueous Rechargeable Lithium–ion Batteries


Facile synthesis of novel tough and highly flexible biodegradable membranes for water microfiltration


Investigating the possibility of using acetic acid in place of HF in chromium-benzenedicarboxylates (MIL-53 and MIL-101) synthesis applicable for CO2 adsorption


Previous issues

Smart Healthcare pulls up Clouds for Virtual Medicine

Selecting the correct electromagnetic inspection technology 

Influence of railway-track grinding on the track material condition and tribological behaviour

Micromechanical Fatigue Modelling of the Size Effect in Micro-Scale 316L Stainless Steel Specimens

Functionalization of Graphene and Reduced Graphene Oxide in Different Matrices

Effect of parasitic polytypes on ballistic electron transport in chemical vapor deposition grown 6H-SiC epitaxial layers

Photomemristive heterostructures based on two-dimensional crystals

Architecture - behaviour - properties relationship in Star-shaped MPA-PMMA and MPA-PS hyper-branched copolymers

Graphene and doped graphene: A comparative DFT study

Ag2CO3 / Magnetic reduced graphene oxide nanocomposite as advanced visible light photocatalytic hybrid materials for efficient degradation of azo dye

Optimization of acid hydrolysis process for the preparation cellulose nanofibrils

Alginate/k-carrageenan and alginate/gelatin composite hydrogel beads for controlled drug release of curcumin

Study of microstructure and mechanical properties of friction stir welded ferrite-martensite DP700 steel

Upcoming Congress

Knowledge Experience at Sea TM