A 2d model of the dynamic of the collision: i2-polymeric liquid surfaces of perfluorinatedpolyether (PFPE), polydimetilsiloxane (PDMS) and squalane

Journal of the Brazilian Chemical Society

Leal, Alexandre S.¹  Universidade Federal de Minas Gerais, Belo Horizonte, Brazil¹  Schor, Heloiza H. R.¹  Universidade Federal da Bahia, Salvador, Brazil¹  Quintella, Cristina M.¹  Universidade Federal de Ouro Preto, Ouro Preto, Brazil¹  Santos, Claudio G. dos¹ 

关键词: gas-liquid scattering;    perfluorinatedpolyether;    polydimethylsiloxane;    squalane;   

DOI  :  10.1590/S0103-50532007000300006

学科分类：化学（综合）

来源: SciELO

【 摘 要 】

This paper presents two dimension classical trajectory calculations for the scattering of an I2 molecule in the liquid polymeric surfaces of perfluorinatedpolyether (PFPE), polydimethyl-siloxane (PDMS) and squalane. The potential function describing the interaction of the gas molecule with the liquid surface is formulated as a modified LEPS potential. Each diatomic I2 molecule and the I-surface potential are represented as a Morse function, with parameters adjusted from experimental data of scattering experiments. The surface was modeled as a typical effective mass with two harmonic vibrational degrees of freedom. This dynamics of the scattering process is in good agreement with experimental dynamical data. The experimentally observed inelastic scattering (IS) and the trapping and desorption (TD) processes were characterized and the determined I2 vibrational temperatures showed good agreement with experimental values.

【 授权许可】

Unknown