Povezava prostega volumna z mehanskimi lastnostmi viskoelastičnih materialov : magistrsko delo
Supej, Matej
Metoda pozitronske anihilacije življenjskih časov sloni na kvantno mehanskem modelu sferičnega škatlastega potenciala, preko katerega lahko izračunamo povprečne velikosti in porazdelitve lukenj ...prostega volumna. Za iskanje povezav prostega volumna z mehanskimi lastnostmi smo opravili temperaturno odvisne meritve pod temperaturo faznega prehoda Tg in nad njo za tri različne poliamide in poli e[eta]-kaprolakton. Pri slednjem smo pomerili tudi dogajanje pri topljenju in kristalizaciji. Za analizo spektrov, ki jih dobimo pri meritvah, smo uporabili posebno prirejena programska paketa Lifspecfit in LT 8.0. Poleg tega je v delu predstavljeno tudi delovanje spektrometra, uporaba programskih paketov in najnovejši digitalni način maritve pozitronske anihilacije, ki ga nameravamo kupiti tudi v Centru za eksperimentalno mehaniko.
Type of material - master's thesis
; adult, serious
Publication and manufacture - Ljubljana : [M. Supej], 2002
GS II 0000545894 glavno skladišče
GS II 545894 glavno skladišče
available - reading room
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