Preparation and Characterization of Modified Poly Vinyl Chloride for Water Treatment Applications
Hossam Ahmed Aly Moustafa Tieama;
Abstract
Polyvinyl chloride (PVC) is an outstanding hydrophobic membrane material because of its stiffness, low cost, excellent physical and chemical properties, as well as its robust mechanical strength. PVC is a competitive resin with the virtues of abrasive resistance, acid and alkali resistance, microbial corrosion resistance, and chemical
performance stabilization. PVC is also a promising ultra-filtration (UF) and microfiltration membrane material for water treatment. The solubility and miscibility of membrane polymer components are important parameters and should be taken into account during membrane design. Despite, the technological relevance of UF in a wide range of applications, its own limitation is flux decline due to fouling. Fouling is an irreversible process caused by solute adsorption and pore blocking, which can be minimized by using more hydrophilic membrane components. The performance of the polymeric membranes can be improved by reacting the original polymer components with other polymers which having more suitable properties. The chemical reaction process of polymers is a very interesting way for producing materials with improved bulk properties of membranes. In order to improve the pure water flux of PVC membranes, Poly ethylene imine was introduced as the second polymer component to hydrophilize PVC. Addition of poly ethylene glycol to the modified polymer is very important to get an efficient pore forming. The functionalization of PVC with amino groups is an objective pursued by scientists for more than 10 years. The modification of PVC can generally be achieved by nucleophilic substitution reactions of chlorine atoms. Appropriate modification agents are characterized by a strong nucleophile character, while their basicity should be low in order to avoid dehydro-chlorination of the polymer.
Water desalination by nanofiltration and reverse osmosis is an important field where ion exchange membranes have been served.
In this process, the membrane acts as a barrier under pressure gradient as a driving force. The desalination is controlled by membrane material and high water flux.
Neutral, cationic and anionic membranes have been utilized in this application. The objectives of this study were to describe the synthesis and characterization of aminated PVC using a new procedure for water treatment applications and also for evaluating the modified membrane performance in terms of permeability (pure water flux) and quality (salt rejection). The modified membranes characterized using different tools including FT-IR, TGA, DSC, and SEM. The mechanical properties are essential characters. Finally, the modified membranes are expected to have good mechanical properties, good wettability and promising exchange capacity in water treatment applications.
performance stabilization. PVC is also a promising ultra-filtration (UF) and microfiltration membrane material for water treatment. The solubility and miscibility of membrane polymer components are important parameters and should be taken into account during membrane design. Despite, the technological relevance of UF in a wide range of applications, its own limitation is flux decline due to fouling. Fouling is an irreversible process caused by solute adsorption and pore blocking, which can be minimized by using more hydrophilic membrane components. The performance of the polymeric membranes can be improved by reacting the original polymer components with other polymers which having more suitable properties. The chemical reaction process of polymers is a very interesting way for producing materials with improved bulk properties of membranes. In order to improve the pure water flux of PVC membranes, Poly ethylene imine was introduced as the second polymer component to hydrophilize PVC. Addition of poly ethylene glycol to the modified polymer is very important to get an efficient pore forming. The functionalization of PVC with amino groups is an objective pursued by scientists for more than 10 years. The modification of PVC can generally be achieved by nucleophilic substitution reactions of chlorine atoms. Appropriate modification agents are characterized by a strong nucleophile character, while their basicity should be low in order to avoid dehydro-chlorination of the polymer.
Water desalination by nanofiltration and reverse osmosis is an important field where ion exchange membranes have been served.
In this process, the membrane acts as a barrier under pressure gradient as a driving force. The desalination is controlled by membrane material and high water flux.
Neutral, cationic and anionic membranes have been utilized in this application. The objectives of this study were to describe the synthesis and characterization of aminated PVC using a new procedure for water treatment applications and also for evaluating the modified membrane performance in terms of permeability (pure water flux) and quality (salt rejection). The modified membranes characterized using different tools including FT-IR, TGA, DSC, and SEM. The mechanical properties are essential characters. Finally, the modified membranes are expected to have good mechanical properties, good wettability and promising exchange capacity in water treatment applications.
Other data
| Title | Preparation and Characterization of Modified Poly Vinyl Chloride for Water Treatment Applications | Other Titles | تطوير اغشية البولى فينيل كلوريد واستخدامها فى معالجة المياه | Authors | Hossam Ahmed Aly Moustafa Tieama | Issue Date | 2015 |
Recommend this item
Similar Items from Core Recommender Database
Items in Ain Shams Scholar are protected by copyright, with all rights reserved, unless otherwise indicated.