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Development of a computer model to e...

Han, Jong-Koo.

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Development of a computer model to evaluate the ability of plastics to act as functional barriers.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Development of a computer model to evaluate the ability of plastics to act as functional barriers./
Author:	Han, Jong-Koo.
Description:	173 p.
Notes:	Adviser: Susan E. Selke.
Contained By:	Dissertation Abstracts International63-09B.
Subject:	Computer Science. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3064231
ISBN:	0493830650

Development of a computer model to evaluate the ability of plastics to act as functional barriers.
Han, Jong-Koo.

Development of a computer model to evaluate the ability of plastics to act as functional barriers. - 173 p.

Adviser: Susan E. Selke.

Thesis (Ph.D.)--Michigan State University, 2002.

The overall objective of this research was the development of a computer program that can be utilized to predict the adequacy of a functional barrier structure in preventing migration of undesirable constituents of post consumer recycled plastics into liquid products such as foods.

ISBN: 0493830650Subjects--Topical Terms:

626642
Computer Science.

Development of a computer model to evaluate the ability of plastics to act as functional barriers.
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020 $a 0493830650
035 $a (UnM)AAI3064231
035 $a AAI3064231
040 $a UnM $c UnM
100 1 $a Han, Jong-Koo. $3 1256743
245 1 0 $a Development of a computer model to evaluate the ability of plastics to act as functional barriers.
300 $a 173 p.
500 $a Adviser: Susan E. Selke.
500 $a Source: Dissertation Abstracts International, Volume: 63-09, Section: B, page: 4347.
502 $a Thesis (Ph.D.)--Michigan State University, 2002.
520 $a The overall objective of this research was the development of a computer program that can be utilized to predict the adequacy of a functional barrier structure in preventing migration of undesirable constituents of post consumer recycled plastics into liquid products such as foods.
520 $a For this study, 3-layer co-extruded high density polyethylene (HDPE) film samples, having a symmetrical structure with a contaminated core layer and virgin outer layers as the functional barriers, were fabricated with varying thickness of the outer layers and with a known amount of selected contaminant simulants, 3,5-di-<italic>t</italic>-butyl-4-hydroxytoluene (BHT) and Irganox™076 (octadecyl-3-(3,5-di-<italic>t</italic>-butyl-4-hydroxyphenyl)-propionate), in the core layer. Experimentally, migration of the contaminant simulants from the core layer to the liquid food simulants was determined as a function of the thickness of the outer layer at different temperatures.
520 $a A simulation model computer program, which accounts for not only the diffusion process inside the polymer but also partitioning of the contaminant between the polymer and the contacting phase, was developed based on a numerical treatment, the finite element method, to quantify the migration through the multi-layer structures. The accuracy of the model in predicting migration was demonstrated successfully by comparing the simulated results to experimental data.
520 $a The computer program, developed as a total solution package for migration problems, can be applied not only to multi-layer structures made with the same type of plastics, but also to structures with different plastics, e.g. PP/PE/PP. This work might provide the potential for wider use of recycled plastic, especially polyolefins which have less barrier ability, in food packaging, and simplification of the task of convincing the FDA that adequate safety guarantees have been provided.
590 $a School code: 0128.
650 4 $a Computer Science. $3 626642
650 4 $a Engineering, Packaging. $3 1025152
650 4 $a Plastics Technology. $3 1023683
690 $a 0549
690 $a 0795
690 $a 0984
710 2 0 $a Michigan State University. $3 676168
773 0 $t Dissertation Abstracts International $g 63-09B.
790 $a 0128
790 1 0 $a Selke, Susan E., $e advisor
791 $a Ph.D.
792 $a 2002
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3064231