Abstract
A study of the morphology and light-transmissivity in nine commercial samples of high-density polyethylene (HDPE) sheets has been carried out. The sheets were produced by the plastic-film extrusion process in nine Jordanian plastic factories. The variations in the samples were determined in terms of crystallinity, crystallite size, heat of fusion, and melting point. X-ray diffraction, ultra violet and visible absorption spectroscopy, and differential scanning calorimetry (DSC) techniques have been used. The nine samples have relatively high x-ray crystallinity (46.1 - 60.8 %). The crystallite size are relatively large (79 - 103 angstroms). The melting point is in the temperature range 127.4 - 132.6 degrees celsius in the samples which were thermally-treated (annealed), and the heat of fusion is in the range (178.6 - 214.0 J/g) in these samples. Annealing of HDPE sheets in vacuum improved the crystallinity especially at temperatures below the melting point (a crystallinity of 73.2% was obtained at 105 degrees celsius). Samples with higher crystallinity showed better transmissivity of visible light. X-ray diffraction crystallinity reveals the variations in the morphology more sensitively than the DSC method. 38 refs., 16 figs., 12 tabs. (A.M.H.).
Citation Formats
Dabayneh, K M.
A study of the fine structure and light transmission in high-density polyethylene sheets from plastic factories in Jordan.
Jordan: N. p.,
1991.
Web.
Dabayneh, K M.
A study of the fine structure and light transmission in high-density polyethylene sheets from plastic factories in Jordan.
Jordan.
Dabayneh, K M.
1991.
"A study of the fine structure and light transmission in high-density polyethylene sheets from plastic factories in Jordan."
Jordan.
@misc{etde_10133789,
title = {A study of the fine structure and light transmission in high-density polyethylene sheets from plastic factories in Jordan}
author = {Dabayneh, K M}
abstractNote = {A study of the morphology and light-transmissivity in nine commercial samples of high-density polyethylene (HDPE) sheets has been carried out. The sheets were produced by the plastic-film extrusion process in nine Jordanian plastic factories. The variations in the samples were determined in terms of crystallinity, crystallite size, heat of fusion, and melting point. X-ray diffraction, ultra violet and visible absorption spectroscopy, and differential scanning calorimetry (DSC) techniques have been used. The nine samples have relatively high x-ray crystallinity (46.1 - 60.8 %). The crystallite size are relatively large (79 - 103 angstroms). The melting point is in the temperature range 127.4 - 132.6 degrees celsius in the samples which were thermally-treated (annealed), and the heat of fusion is in the range (178.6 - 214.0 J/g) in these samples. Annealing of HDPE sheets in vacuum improved the crystallinity especially at temperatures below the melting point (a crystallinity of 73.2% was obtained at 105 degrees celsius). Samples with higher crystallinity showed better transmissivity of visible light. X-ray diffraction crystallinity reveals the variations in the morphology more sensitively than the DSC method. 38 refs., 16 figs., 12 tabs. (A.M.H.).}
place = {Jordan}
year = {1991}
month = {Dec}
}
title = {A study of the fine structure and light transmission in high-density polyethylene sheets from plastic factories in Jordan}
author = {Dabayneh, K M}
abstractNote = {A study of the morphology and light-transmissivity in nine commercial samples of high-density polyethylene (HDPE) sheets has been carried out. The sheets were produced by the plastic-film extrusion process in nine Jordanian plastic factories. The variations in the samples were determined in terms of crystallinity, crystallite size, heat of fusion, and melting point. X-ray diffraction, ultra violet and visible absorption spectroscopy, and differential scanning calorimetry (DSC) techniques have been used. The nine samples have relatively high x-ray crystallinity (46.1 - 60.8 %). The crystallite size are relatively large (79 - 103 angstroms). The melting point is in the temperature range 127.4 - 132.6 degrees celsius in the samples which were thermally-treated (annealed), and the heat of fusion is in the range (178.6 - 214.0 J/g) in these samples. Annealing of HDPE sheets in vacuum improved the crystallinity especially at temperatures below the melting point (a crystallinity of 73.2% was obtained at 105 degrees celsius). Samples with higher crystallinity showed better transmissivity of visible light. X-ray diffraction crystallinity reveals the variations in the morphology more sensitively than the DSC method. 38 refs., 16 figs., 12 tabs. (A.M.H.).}
place = {Jordan}
year = {1991}
month = {Dec}
}