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  • Polymer and Materials Science  (5)
  • Atmospheric Sciences  (3)
  • 1
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    Introduction (2021)
    In:  http://aquaticcommons.org/id/eprint/15764 | 8 | 2014-12-01 18:44:59 | 15764
    Details
    Publication Date: 2021-07-10
    Description: The Twelfth Annual PACLIM Workshop was held at the Asilomar Conference Center on May 2-5, 1995. The workshop included 32 talks and 26 poster presentations. The talks consisted of a 1-day theme session of nine 45-minute talks and two featured evening talks. Throughout the remainder of the meeting were over 20 shorter 20-minute presentations. Poster presenters gave a 1-2 minute introduction to their posters, which were displayed during the entire meeting. About 100 participants were registered at the workshop.
    Keywords: Atmospheric Sciences ; Earth Sciences ; Ecology ; Limnology ; Oceanography ; PACLIM
    Repository Name: AquaDocs
    Type: conference_item
    Format: application/pdf
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  • 2
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    Introduction (2021)
    In:  http://aquaticcommons.org/id/eprint/15824 | 8 | 2014-12-10 20:36:18 | 15824
    Details
    Publication Date: 2021-07-10
    Description: The Thirteenth Annual PACLIM Workshop was held at the Asilomar Conference Center on April 14-17, 1996. Attended by about 100 registered participants, the workshop included 27 talks and 26 poster presentations. The talks consisted of a one-day theme session of seven 45-minute talks and two featured evening talks. Throughout the remainder of the meeting were nearly 20 shorter, 20-minute presentations. Poster presenters gave a short 1-2 minute introduction to their posters, which were displayed during the entire meeting.All presenters were invited to expand their abstracts into a manuscript for inclusion in the Proceedings volume, and nearly all presentations are included in manuscript or abstract form. In this Proceedings volume, manuscripts are presented first, and abstracts of talks and then posters follow.
    Keywords: Atmospheric Sciences ; Earth Sciences ; Ecology ; Limnology ; Oceanography ; PACLIM ; hydrology
    Repository Name: AquaDocs
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  • 3
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    Introduction (2021)
    In:  http://aquaticcommons.org/id/eprint/15689 | 8 | 2014-11-20 18:39:39 | 15689
    Details
    Publication Date: 2021-07-09
    Description: Nearly 100 participants attended the eleventh annual PACLIM workshop at the Asilomar Conference Center in Pacific Grove, California, on April 19-22, 1994. A one-day theme session of ten 45-minute talks was followed by sessions of 20-minute presentations. In addition, 19 presenters gave 1- to 2-minute introductions to their posters, which were displayed throughout the meeting.
    Keywords: Atmospheric Sciences ; Earth Sciences ; Ecology ; Limnology ; Oceanography ; PACLIM
    Repository Name: AquaDocs
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  • 4
    Electronic Resource
    Electronic Resource
    Influence of polymer solubilization on latex behaviorProd. No. 1291 (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 10 (1966), S. 171-183 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The effect of solubilization of latex polymers was investigated in various anionic surfactant solutions. The process of solubilization was studied by measuring the increase in light transmission and viscosity of the latexes. It was found that anionic surfactants differ widely in their ability to solubilize a given polymer, and susceptibility to solubilization is significantly affected by comonomer content of the polymer. If, for example, a poly(vinyl acetate) latex is stabilized exclusivdly by a strongly solubilizing sodium dodecyl benzene sulfonate, it is less stable and hydrolyzes faster than a similar latex made with a polyoxyethylene derivative, which has only a slight solubilizing action. Dibutyl mateate copolymers of vinyl acetate are less susceptible to solubilization than hompolymers of vinyl acetate.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1966.070100113
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  • 5
    Electronic Resource
    Electronic Resource
    Photolytic degradation of some poly(alkylene polysulfides)Presented in part before the Society of Plastic Engineers, Regional Technical Conference, Washington, D. C., June 4, 1964, and before the Organic Coatings and Plastics Chemistry Division at the 148th Meeting of the American Chemical Society, Chicago, September 1, 1964. (1965)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 9 (1965), S. 3489-3497 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Poly(methylene disulfide), poly(methylene tetrasulfide), poly(ethylene disulfide), and poly(ethylene tetrasulfide) have been subjected to ultraviolet radiation in vacuum at 50°C. Weight losses during photolysis include both low molecular weight compounds and readily condensable polymeric materials; the latter account for the greater proportion of the weight losses. Carbon monosulfide, isolated as its polymer, and hydrogen sulfide are major photolytic products. Carbon disulfide is a major product from the methylene but not from the ethylene polymers. The tetrasulfide polymers during irradiation from volatile products which on condensation give the original polymer. A mechanism of degradation compatible with these findings is suggested.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1965.070091025
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  • 6
    Electronic Resource
    Electronic Resource
    Characterization of the oxidation of tantalum nitride (1993)
    Chichester [u.a.] : Wiley-Blackwell
    Surface and Interface Analysis 20 (1993), S. 559-564 
    Details
    ISSN: 0142-2421
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: Sputter-deposited non-stoichiometric tantalum nitride films are used for laser-trimmed thin-film resistors owing to their stability and processability. The films are stabilized by heating in air to form a passive Ta2O5 film. This passive film can be destroyed if the resistors are exposed to aggressive thermal or chemical conditions. Thus we have studied sputtered TaN films and resistors deposited on SiO2 and Al2O3 substrates and exposed to either KOH solutions or air at 250-500 °C for various times. The oxidized films have been characterized with Auger electron spectroscopy (AES), x-ray photelectron spectroscopy (XPS), x-ray absorption near-edge spectroscopy (XANES) and extended x-ray absorption fine structure (EXAFS). Chemical shifts in the NOO Auger spectrum have been used to show that the initial fraction of deposited TaN reacts with the SiO2 surface to form Ta2O5. X-ray photoelectron spectroscopy showed that although significant amounts of oxygen can be present in the sputered films, little of the tantalum is fully oxidized to Ta2O5. X-ray photoelectron spectroscopy was also used to show that the oxide layer slowly increases in thickness when heated in air. Finally, KTaO3 was identified by XANES on the surface of films exposed to KOH. Once the passive Ta2O5 is converted to KTaO3, further oxidation of the underlying films occurs. The mechanism of oxidation of these films and the unique advantages of each spectroscopic technique are discussed.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/sia.740200703
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  • 7
    Electronic Resource
    Electronic Resource
    Photolytic degradation of poly(methyl methacrylate)Presented in part at the 140th meeting of the American Chemical Society, Chicago, Illinois, September 1961. This work was partially supported by the Aeronautical Systems Division, U. S. A. F. (1963)
    New York : Wiley-Blackwell
    Journal of Polymer Science Part A: General Papers 1 (1963), S. 1079-1086 
    Details
    ISSN: 0449-2951
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Thin films of poly(methyl methacrylate) (PMMA) at about 25°C. irradiated with a medium-pressure mercury lamp undergo random scission with a quantum yield of 0.039 and 0.017 scissions/quantum absorbed in vacuum and in air, respectively. Crosslinking in air was not observed. Quantum yields for scission were independent of intensity. Volatile products included methyl formate, methyl methacrylate, and methanol in quantum yields of 0.14, 0.20, and 0.48 molecules per quantum absorbed, respectively. During irradiation in either vacuum or air, the ultraviolet absorption of PMMA increases with a band at 285 mμ, attributed to carbonyl groups in the polymer itself. A mechanism for the photodegradation of PMMA is suggested.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1963.100010321
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  • 8
    Electronic Resource
    Electronic Resource
    Photodegradation of poly(methyl acrylate)Presented in part at the 142nd meeting of the American Chemical Society, Atlantic City, N. J., September 1962. (1964)
    New York : Wiley-Blackwell
    Journal of Polymer Science Part A: General Papers 2 (1964), S. 2085-2092 
    Details
    ISSN: 0449-2951
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Thin films of poly(methyl acrylate) at room temperature have been photodegraded in air and in vacuum by radiation from a low-pressure mercury source. Changes in intrinsic viscosities, ultraviolet absorption, and volatile products were followed as a function of the energy absorbed. Crosslinking occurs in both air and vacuum, but at a slower rate in air. The apparent quantum yield for random scission in air was 0.013 scissions per quantum absorbed. In air, carbonyl groups are formed along the backbone chain. Most of the volatile products studied appear to orginate from the ester groups in the polymer; formaldehyde, methanol, and methyl formate evolved at a constant rate for doses up to at least 2 × 1020 quanta/g.; quantum yields for each were determined. Carbon dioxide forms in amounts increasing exponentially with dose. Small amounts of carbon monoxide, methane, and hydrogen were detected qualitatively, but monomer was not observed. A mechanism compatible with these findings is suggested.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1964.100020506
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