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http://hdl.handle.net/2080/498
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| Title: | Effect of Changing Environments on Microstructure of HDPE Polymer |
| Authors: | Bal, S
Mahesh, D
Sen, T K
Ray, B C |
| Keywords: | HDPE
Thermal cycling
Humidity cycling
Tensile, Impact
Cross-linking
Degradation |
| Issue Date: | 2007 |
| Publisher: | Institute of Materials Processing |
| Citation: | Journal of Minerals & Materials Characterization & Engineering, Vol 6, No 1, P 1-16 |
| Abstract: | The analysis of environmental effects on microstructure of HDPE polymers were
done according to their mechanical behavior obtained from tensile, impact and
microhardness testing and thermograms obtained from DSC. The samples were
conditioned under three different kinds of humidity and temperature environment. With
increase in conditioning time, the variations of tensile strength, impact, microhardness
were observed to be nonlinear in nature. The high values are possibly due to
polymerization such as cross-linking. The low values may be attributed by
depolymerization mechanism such as chain scission and bond breakage. The variation of
data is due to more physical damage of the polymer because of unequal expansion of the
surface. The refrigeration also affects the crystalline regions by changing free volume.
Again rearrangement of end groups in the lamella through partial melting and
recrystallization are observed due to thermal conditioning and thermal shock |
| Description: | Copyright for this article belongs to Institute of Materials Processing, MTU |
| URI: | http://www.imp.mtu.edu/jmmce/issue6-1/P1-16.pdf
http://hdl.handle.net/2080/498 |
| Appears in Collections: | Journal Articles
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Size | Format |
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| P1-16.pdf | | 57Kb | Adobe PDF | View/Open |
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