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外文期刊>journal of applied polymer science
>Plasma polymerization of perfluoro‐2‐butyltetrahydrofuran/methane and perfluorobezene/tetrafluoromethane mixtures and gas permeation properties of the plasma polymers
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Plasma polymerization of perfluoro‐2‐butyltetrahydrofuran/methane and perfluorobezene/tetrafluoromethane mixtures and gas permeation properties of the plasma polymers
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机译：Plasma polymerization of perfluoro‐2‐butyltetrahydrofuran/methane and perfluorobezene/tetrafluoromethane mixtures and gas permeation properties of the plasma polymers
AbstractPlasma polymer films prepared from perfluoro‐2‐butyltetrahydrofuran (PFBTHF) and perfluorobenzene (PFB) were investigated by elemental analysis, infrared spectroscopy, and ESCA. The gas separation properties were also investigated to seek plasma polymer films with good permselectivity. Plasma polymer films from PFBTHF and PFB were composed of polymer chains with fluorinated moieties such asC–CFn,CF,CF–CFn,CF2, andCF3groups. Changes in the afcurrent as an operating condition for plasma polymerization showed less influence on the distribution of the fluorinated moieties but more influence on the permselectivity of the plasma polymer films formed. The permselectivity was improved by plasma polymerization in the PFBTHF/CH4or PFB/CF4mixture systems. ThePO2/PN2ratio for the plasma polymer films prepared from PFBTHF/CH4and PFB/CF4mixtures increased from 3.1 at 0 mol CH4to 4.0 at 50 mol CH4addition, and from 4.1 at 0 mol CF4to 5.0 at 25 mol CF4addition, respectively. The permselectivity of the plasma polymer films may be related to the crosslinkage and aggregation of polymer chains rather than the elemental comp
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