Ferreira, Beatriz AlvesBernardes, Américo TristãoAlmeida, Wagner Batista de2012-06-122012-06-122001FERREIRA, B. A.: BERNARDES, A. T.; ALMEIDA, W. B. de. Computer simulation of polydioxolane (PDXL) and poly(tetrahydrofuran) (PTHF) : a comparative study of some poly(ethylene oxide) (PEO) properties. Journal of Molecular Structure (Teochem), v. 539, n. 1, p. 93-99, 2001. Disponível em: <https://www.sciencedirect.com/science/article/pii/S0166128000007764>. Acesso em: 12 jun. 2012.01661280http://www.repositorio.ufop.br/handle/123456789/831Classical methods (molecular mechanics and molecular dynamics) and semiempirical calculations were applied to study structural and energetic properties of polydioxolane (PDXL) and poly(tetrahydrofuran) (PTHF). Then, these properties were compared with poly(ethylene oxide) (PEO) in order to investigate the possibility of using PDXL and PTHF as an alternative to PEO based systems. It was found that the behaviour of molecular simulation is similar for all of them, with the folded structure observed in equilibrium. It was noted that the main contribution to potential energy is due to electrostatic term. The O/C ratio and oxygen atom positions have a strong in¯uence on charge distribution. Semiempirical calculations of free energy including enthalpic, entropic and zero point energy (ZPE) contributions showed that the folding process is favourable for PEO, PTHF and PDXL at 300 and 400 K.en-USPolydioxolantePoly(ethylene oxide)Computer simulationArtigo publicado em periodicoO Periódico Journal of Molecular Structure (Theochem) concede permissão para depósito do artigo no Repositório Institucional da UFOP. Número da licença: 3286990779221.