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Title: Open Source Laser Polymer Welding System: Design and Characterization of Linear Low-Density Polyethylene Multilayer Welds

Authors:
; ; ; ORCiD logo
Publication Date:
Sponsoring Org.:
USDOE Advanced Research Projects Agency - Energy (ARPA-E)
OSTI Identifier:
1419596
Grant/Contract Number:
AR0000507
Resource Type:
Journal Article: Published Article
Journal Name:
Machines
Additional Journal Information:
Journal Volume: 4; Journal Issue: 4; Related Information: CHORUS Timestamp: 2018-02-05 08:33:47; Journal ID: ISSN 2075-1702
Publisher:
MDPI AG
Country of Publication:
Country unknown/Code not available
Language:
English

Citation Formats

Laureto, John, Dessiatoun, Serguei, Ohadi, Michael, and Pearce, Joshua. Open Source Laser Polymer Welding System: Design and Characterization of Linear Low-Density Polyethylene Multilayer Welds. Country unknown/Code not available: N. p., 2016. Web. doi:10.3390/machines4030014.
Laureto, John, Dessiatoun, Serguei, Ohadi, Michael, & Pearce, Joshua. Open Source Laser Polymer Welding System: Design and Characterization of Linear Low-Density Polyethylene Multilayer Welds. Country unknown/Code not available. doi:10.3390/machines4030014.
Laureto, John, Dessiatoun, Serguei, Ohadi, Michael, and Pearce, Joshua. 2016. "Open Source Laser Polymer Welding System: Design and Characterization of Linear Low-Density Polyethylene Multilayer Welds". Country unknown/Code not available. doi:10.3390/machines4030014.
@article{osti_1419596,
title = {Open Source Laser Polymer Welding System: Design and Characterization of Linear Low-Density Polyethylene Multilayer Welds},
author = {Laureto, John and Dessiatoun, Serguei and Ohadi, Michael and Pearce, Joshua},
abstractNote = {},
doi = {10.3390/machines4030014},
journal = {Machines},
number = 4,
volume = 4,
place = {Country unknown/Code not available},
year = 2016,
month = 7
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.3390/machines4030014

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  • The investigation method reported in earlier articles was applied to preirradiation methods of the reaction of low-density polyethylene (LDPE) in liquid and vapor and compared with high-density polyethylene (HDPE). Monomer concentrations during reactions and monomer feed rates were determined gravimetrically. Increasing patterns of the degree of grafting were obtained and compared. Monomer concentration during the reactions was lower in LDPE than HDPE and radical decay was more rapid in LDPE. A model calculation was applied to this experiment and a schematic explanation was attempted. The differences between the reaction mechanisms of HDPE and LDPE are explained.
  • The blending technique utilizing the radioinduced cross linking was found to be effective in preventing the separation of the blending polymer. High and low-density samples with mp's of 139 and 114 deg C, respectively, and containing 5, 10, 15, and 20 wt% of the former were irradiated by gamma rays from a 3-kc Co/sup 60/ source at the rate of 0.4 Mr/hr at room temperature and at 150 deg C up to 10, 20, and 30 Mr. Results of the measurements of specific gravity, specific volumetemperature, specific heat-temperature, and elasticity were compared with those obtained from unirradiated samples. It wasmore » concluded that the homogeneous blending occurred only when the mixtures were irradiated in the melted state when uniform crystallization resulted during the cooling process. (OID)« less
  • We investigated the electron density profile corresponding to the dominant extreme ultraviolet (EUV) emission from a laser-produced Sn plasma using a combination of a green and an UV interferometer. A comparison between experimental results and a one-dimensional radiation hydrodynamic simulation shows reasonable agreement, and the discrepancy could be attributed to three-dimensional plasma expansion. It was found that, due to opacity effects, most of the EUV light comes from an under-dense plasma region.
  • An isotropic high-density graphite was used as a polarizable electrode of all-solid state electric double-layer capacitor using polyethylene oxide (PEO) or gel PEO electrolyte. The all-solid-state capacitor with high-density graphite electrodes possesses higher differential capacity than the other flat electrodes in PEO/LiClO{sub 4} ([EO]/[Li{sup +}] = 8:1) solid polymer electrolyte at 80 C or PEO/PC/LiClO{sub 4} ([EO]/[PC]/[Li{sup +}] = 8:8:1) gel electrolyte at ambient temperature. The capacitance of the electric double layer of the high-density graphite electrode was strongly influenced by the cell temperature and concentration of LiClO{sub 4}, because of the different state of the polymer crystallinity and differentmore » interface contact state between the high-density graphite electrode and the solid electrolyte. The all-solid-state capacitor with PEO/LiClO{sub 4} ([EO]/[Li{sup +}] = 8:1) solid polymer electrolyte and PEO/PC/LiClO{sub 4} ([EO]/[PC]/[Li{sup +}] = 8:8:1) gel electrolytes showed good charge/discharge behavior with a relatively high capacitance at 80 and 20 C, respectively.« less
  • The catalytic degradation of high-density polyethylene (hdPE) over ultrastable Y zeolite in a semibatch reactor was studied at different heating rates and reaction temperatures. Catalytic degradation of the polymer occurred at much lower temperatures than pure thermal degradation. When gel permeation chromatography was used to determine the molar mass distribution, it was found that solid state reactions occur only in the presence of a catalyst. These reactions change the polymer structure well before the formation of significant amounts of volatile products. The pattern of formation of gaseous and liquid products was studied and found to follow the temperature increase. Aftermore » the system reached its final temperature, the reaction rate of formation of volatile products decreased rapidly. The product range was typically between C{sub 3} and C{sub 15}. Isobutane and isopentane were the main gaseous products. The liquid product fraction was alkane-rich, as alkenes rapidly undergo bimolecular hydrogen transfer reactions to give alkanes as secondary products.« less