Unit:
Κατεύθυνση Οργανική Σύνθεση και Εφαρμογές της στη Χημική ΒιομηχανίαLibrary of the School of Science
Author:
Frousiou Effrosyni
Supervisors info:
Βουγιουκαλάκης Χ. Γεώργιος Αναπληρωτής Καθηγητής Τμήμα Χημείας ΕΚΠΑ,
Μαυρομούστακος Θωμάς Καθηγητής Τμήμα Χημείας, ΕΚΠΑ,
Ταγματάρχης Νικόλαος, Ερευνητής Α', Εθνικό Ίδρυμα Ερευνών
Original Title:
ΣΥΝΘΕΣΗ ΚΑΙ ΧΑΡΑΚΤΗΡΙΣΜΟΣ ΕΙΔΙΚΑ ΣΧΕΔΙΑΣΜΕΝΩΝ ΟΡΓΑΝΙΚΩΝ ΜΟΡΙΩΝ ΠΟΥ ΣΤΟΧΕΥΟΥΝ ΣΤΗ ΒΕΛΤΙΣΤΟΠΟΙΗΣΗ ΤΩΝ ΙΔΙΟΤΗΤΩΝ ΤΩΝ ΥΛΙΚΩΝ KEVLAR, NOMEX και VAR
Translated title:
SYNTHESIS AND CHARACTERIZATION OF SPECIALLY DESIGNED ORGANIC MOLECULES AIMING AT IMPROVEMENT OF KEVLAR,NOMEX AND VAR MATERIALS.
Summary:
Aramids are synthetic polyamides that exhibit excellent mechanical properties. They are characterized as materials with exceptional thermal stability and show applications as protecting agents in Kevlar, Nomex and VAR fabrics. They are used in ballistic vests, in the footwear industry and fire-proof equipment as materials with advanced multifunctionality. Nevertheless, aramids have limited lifetime due to their exposure to ultraviolet radiation. Furthermore, because of their demanding applications, it is beneficial to increase their water repellency as well as their antibacterial activity. So, it is important to improve their properties while simultaneously strengthening the durability of the materials through chemical modification of the polymeric chains. The modification methods of the present work include treatment of the fibers with specially designed organic molecules which carry selected binding groups and functional groups. These designed organic molecules are attached to the surface of the fibers in a way that ensures the improvement of the final products and the acquisition of the desired properties, without affecting the already existing properties. In this thesis, the design and synthesis of small-molecules simulating Kevlar, Nomex and VAR fabrics will be presented, including their benchmark reactions with some of the specially designed molecules described above. Subsequently, the attachment of these compounds to the fabrics was tested and the initial results of this research are presented.
Main subject category:
Science
Keywords:
aramid, cellulose, chemical modification, epichlorohydrin, water repellency, antibacterial activity, ultraviolet radiation, durability
Number of references:
131
File:
File access is restricted until 2028-03-16.
Frousiou Master (2).pdf
4 MB
File access is restricted until 2028-03-16.
