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Sorption characteristic of organic liquid and its effect on the mechanical performance of a PLA‐based plastic
Author(s) -
Widiastuti Indah,
Sbarski Igor,
Masood SH
Publication year - 2016
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.43250
Subject(s) - sorption , materials science , gravimetric analysis , degradation (telecommunications) , modulus , composite material , chemistry , organic chemistry , adsorption , telecommunications , computer science
The objective of this article is to assess the mechanical performance of PLA‐based materials under exposure of an organic liquid. In evaluating new opportunities of PLA‐based material, it is important to understand not only the chemical resistance of the material but also the potential route for degradation, which affect the mechanical behavior of the product during its service time. Degradation of PLA material with amount of sorption should be carefully controlled in order to maintain its mechanical performance in response to various loading condition. Distribution of the absorbed liquid within the package is firstly evaluated by identifying the characteristics of the mass transport. Gravimetric analysis is employed to investigate the liquid sorption mechanism and the induced expansion over a particular period. The profile of absorbed liquid content is numerically obtained and verified with the analytic solution. The changes in mechanical performances were investigated by measuring the properties of specimens containing saturated liquid content. It is found that at low temperature, the kinetics of liquid sorption follows the Fick's law but at higher temperature, it showed a deviation from the Fickian curve. The experiment results also confirm progressive decrease of the modulus and strength by increasing of fluid content inside the material. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 43250.