Infinite dilution diffusion coefficients of organic solvents in nascent polyethylene particles by inverse gas chromatography measurements
Infinite dilution diffusion coefficients of organic solvents in nascent polyethylene particles by inverse gas chromatography measurements
复制标题
通过反气相色谱法测量初生聚乙烯颗粒中有机溶剂的无限稀释扩散系数
DOI：
10.1515/epoly.2007.7.1.148
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发表时间：
2007
期刊：
影响因子：
3.7
通讯作者：
阳永荣
中科院分区：
文献类型：
--
作者：
阳永荣
Abstract Diffusion coefficients of four organic solvents: dichloromethane, trichloromethane, tetrachloromethane and n-hexane in polyethylene particles at infinite dilution were determined by use of inverse gas chromatography (IGC). The polymer particles were used as supplied by the producer to pack the chromatographic columns. This allowed a direct measurement of the interested properties in a particle with the same morphology obtained at the reactor outlet. The particle morphology was investigated and classical mathematical model for chromatographic process was adopted based upon the analysis of particle microstructure. It was found that the limitation step for mass transfer was in the polymer matrix rather than in macropores, and when interpreted in terms of diffusion coefficients for spherical particles, the measured diffusion coefficients compared favourably with predicted values from literature relationships and free volume theory.
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DOI：
10.1007/3-540-10204-3
发表时间：
1990-12
期刊：
--
影响因子：
--
作者：
D. V. Krevelen
通讯作者：
D. V. Krevelen
DOI：
10.1201/9780367811150
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1992
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1980
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1997
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R. H. Perry;D. Green;J. O. Maloney