Diffusion of solvents in poly(vinyl acetate) and partially and fully hydrolyzed poly(vinyl alcohol)

被引：8
|
作者：
Zielinski, John M. [1 ]
Hamedi, Mourad [2 ]
Balashova, Ida M. [3 ]
Danner, Ronald P. [3 ]
机构：
[1] Intertek Chem & Pharmaceut, Allentown, PA 18195 USA
[2] Merck MMD, Rahway, NJ 07065 USA
[3] Penn State Univ, Dept Chem Engn, University Pk, PA 16802 USA
来源：
POLYMER INTERNATIONAL | 2014年 / 63卷 / 02期
关键词：
diffusion; poly(vinyl acetate); poly(vinyl alcohol); free-volume model; inverse gas chromatography; gravimetric sorption; INVERSE GAS-CHROMATOGRAPHY; FREE-VOLUME; WATER; POLYVINYL-ALCOHOL); SPECTROSCOPY; POLYMERS; LIQUIDS; SYSTEMS; FILMS;
D O I：
10.1002/pi.4487
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Diffusivities of methyl acetate, methanol and water in poly(vinyl acetate) and fully and partially hydrolyzed poly(vinyl alcohol) have been measured by capillary column inverse gas chromatography and/or gravimetric sorption. Data from the literature have been used when available for comparison. Overall the diffusivities show good consistency in terms of their temperature and concentration dependences. The free-volume model has been applied to all the data with excellent results. In most cases the dramatic changes in diffusivities with temperature and concentration can be captured using only a few experimental data points and two regression parameters. This demonstrates that the free-volume theory is a valuable tool for the design of equipment for processing and devolatilization of polymer-solvent systems. (c) 2013 Society of Chemical Industry
引用
收藏
页码：221 / 227
页数：7
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