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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.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Development of a computer model to evaluate the ability of plastics to act as functional barriers./
作者:	Han, Jong-Koo.
面頁冊數:	173 p.
附註:	Adviser: Susan E. Selke.
Contained By:	Dissertation Abstracts International63-09B.
標題:	Computer Science. -
電子資源:	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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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.
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650 4 $a Engineering, Packaging. $3 1025152
650 4 $a Plastics Technology. $3 1023683
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