Diffusion of model contaminants in high-density polyethylene

被引：12

作者：

Voultzatis, Ioannis S. ^{[1
]}

Papaspyrides, Constantine D. ^{[1
]}

Tsenoglou, Christos J. ^{[1
]}

Roussis, Constantine ^{[1
]}

机构：

[1] Natl Tech Univ Athens, Lab Polymer Technol, Sch Chem Engn, Athens 15780, Greece

来源：

MACROMOLECULAR MATERIALS AND ENGINEERING | 2007年 / 292卷 / 03期

关键词：

diffusion; free-volume theory; functional barriers; molecular theory; recycling; STATISTICAL MECHANICAL MODEL; FUNCTIONAL BARRIER; PLASTICIZER MIGRATION; ELEVATED PRESSURES; AMORPHOUS POLYMERS; MOLECULAR-WEIGHT; FOOD SIMULANTS; PETROLEUM OILS; COEFFICIENTS; TEMPERATURE;

D O I：

10.1002/mame.200600420

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Four liquid solvents -1,1,1-trichloroethane, toluene, chlorobenzene and octane - are used as model contaminants in sorption experiments in polyethylene in order to study their diffusion behavior between 40 and 70 degrees C and assess the plausibility of utilizing recycled plastics as safe functional barriers in food packaging applications. A hybrid model that combines molecular and free volume theory elements is used to interpret the collected experimental data. This helps in evaluating microstructural characteristics pertaining to the penetrant-polymer systems tested, correlating these characteristics with the molecular properties of the solvent, and has an eventual role in predicting sorption and diffusivity in similar untested systems.

引用

页码：272 / 284

页数：13

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