Preliminary fabrication of biodegradable polymer membranes from renewable resources

Ahmad Bakhtiar, Nur Suraya Anis (2011) Preliminary fabrication of biodegradable polymer membranes from renewable resources. Masters thesis, Universiti Tun Hussein Onn Malaysia.

[img]
Preview
PDF
557Kb

Abstract

A membrane is an interphase between two adjacent phases acting as a selective barrier, regulating the transport substances between the two components. Microporous membranes with controlled pore size and structure were produce from biodegradable polymer based on vegetable oil monomer using phase inversion technique. The optimal conditions for the preparation of microporous polymer membranes was polymer concentrations in N,N-dimethylformamide (DMF) solution 12% (w/v), 15% (w/v), 18% (w/v) and 21% (w/v). The result, the membranes show two types of structure: pinhole-like structure and interconnected network structure. The structure of the membranes consisted of thick fibrillar elements. The membrane cross-section seemed to be composed of stacks of separate layers. Permeability of the polymer membranes obtained at lower concentrations, exhibit extremely higher water permeability with value 0.160952, 0.01482, 0.00098 and 0.00051 L/s.m3 for 12%, 15%, 18% and 21% (w/v) respectively. As the concentration increases, the surface layer of the membranes becomes thicker. Thus, the membranes are easily break compared to the membranes that have densely packed as shown by tear test of 12%, 15%, 18%, and 21% (w/v) with 21.8495 N/mm, 13.9566 N/mm, 10.5433 N/mm, and 12.1662 N/mm tear strength respectively. The fabrication of the polymer membranes with the structure and permeability properties was successfully conducted achieved as a novel research as indicated in many work. Applications of these polymer membranes are use for water treatment, skin wound cover and, in combination with autogenous chondrocytes, as an ‘artificial periosteum’ in the treatment of cartilage defects.

Item Type:Thesis (Masters)
Subjects:T Technology > T Technology (General)
ID Code:2403
Deposited By:Normajihan Abd. Rahman
Deposited On:28 Mar 2012 16:31
Last Modified:28 Mar 2012 16:31

Repository Staff Only: item control page