Abstract
Poly(N,N-dimethylaminoethyl methacrylate) (PDMAEMA) is a promising quite new polymer with very interesting properties. The thermal degradation process of PDMAEMA was investigated. The polymer was heated at specific time intervals, then heating was stopped, and infrared analysis was performed to obtain information on the structure of the solid residue. The thermal degradation process has a two-stage character. The limit temperature for the first decomposition step was about 390°C, after which the second stage of sample decomposition began. The order of disintegration of the macromolecules was determined. Activation energy values for the thermal decomposition process have been calculated; they are 89.8 kJ/mol for the first stage and 17.7 kJ/mol for the second stage of the degradation process.
Highlights
Bioactive polymers have recently attracted considerable attention in both academic and industrial research
PDMAEMA is a thermosensitive polymer that has a lower critical solution temperature (LCST), when the solid polymer is separated from the solution, because of hydrogen bond decomposition [6,7,8]
PDMAEMA was prepared by radical polymerization of dimethylaminoethyl methacrylate initiated with azobisisobutyronitrile (AIBN, Merck, Germany)
Summary
Bioactive polymers have recently attracted considerable attention in both academic and industrial research. The medical, food and textile industries are major end users of applied antimicrobials [1]. The LCST of PDMAEMA, which in aqueous solution at neutral pH is about 50 ̊C, is higher than the human body temperature but could possibly be changed by its copolymerization. PDMAEMA has been used as a: (i) flocculant [9], (ii) carrier for drug delivery systems [10], (iii) ion exchange resin [11,12], (iv) mordant for ink printing [13], (v) membrane material for blood purification [14], (vi) cationic/ anionic mosaic membrane for desalination [15], (vii) antimicrobial modifier for fibres [4,5], (viii) an independent textile flat material [16], and gel beads [17]
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