Wydział Elektryczny

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https://oa.zut.edu.pl/handle/20.500.12539/6

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Przeglądaj Wydział Elektryczny wg Temat "crosslinking"

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    PozycjaOpen Access
    Tailoring the Physico-chemical Properties of Poly(xylitol-dicarboxylate-co-butylene dicarboxylate) Polyesters by Adjusting the Cross-Linking Time
    (MDPI, 2020-07-03) Piątek-Hnat, Marta; Sładkiewicz, Paulina; Bomba, Kuba; Pęksiński, Jakub; Kozłowska, Agnieszka; Sośnicki, Jacek G.; Idzik, Tomasz J.; West Pomeranian University of Technology, Szczecin; West Pomeranian University of Technology, Szczecin; West Pomeranian University of Technology, Szczecin; West Pomeranian University of Technology, Szczecin; West Pomeranian University of Technology, Szczecin; West Pomeranian University of Technology, Szczecin; West Pomeranian University of Technology, Szczecin
    Determining the cross-linking time resulting in the best achievable properties in elastomers is a very important factor when considering their mass production. In this paper, five biodegradable polymers were synthesized—poly(xylitol-dicarboxylate-co-butylene dicarboxylate) polymers, based on xylitol obtained from renewable sources. Five di erent dicarboxylic acids with even numbers of carbon atoms in the aliphatic chain were used: succinic acid, adipic acid, suberic acid, sebacic acid, and dodecanedioic acid. Samples were taken directly after polycondensation (prepolymer samples) and at di erent stages of the cross-linking process. Physiochemical properties were determined by a gel fraction test, di erential scanning calorimetry (DSC), Fourier-transform infrared spectroscopy (FTIR), quasi-static tensile tests, nuclear magnetic resonance spectroscopy (1H NMR and 13C NMR), and an in vitro biodegradation test. The best cross-linking time was determined to be 288h. Properties and degradation time can be tailored for specific applications by adjusting the dicarboxylic acid chain length.