The Experts below are selected from a list of 219 Experts worldwide ranked by ideXlab platform
Stuart Haszeldine - One of the best experts on this subject based on the ideXlab platform.
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Sustainable gasification–biochar systems? A case-study of rice-husk gasification in Cambodia, Part I: Context, chemical properties, environmental and health and safety issues
Energy Policy, 2012Co-Authors: Simon Shackley, Sarah Carter, Tony Knowles, Erik Middelink, Stephan M. Haefele, Saran Sohi, Andrew Cross, Stuart HaszeldineAbstract:Abstract not availableSimon Shackley, Sarah Carter, Tony Knowles, Erik Middelink, Stephan Haefele, Saran Sohi, Andrew Cross, Stuart Haszeldin
Wen-ping Hsu - One of the best experts on this subject based on the ideXlab platform.
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Binary and ternary polymer blends containing poly(vinylidene chloride-co-acrylonitrile)
Journal of Applied Polymer Science, 2004Co-Authors: Wen-ping HsuAbstract:Poly(vinylidene chloride-co-acrylonitrile) (Saran F), poly(hydroxy ether of bisphenol A) (phenoxy), poly(styrene-co-acrylonitrile) (PSAN), and poly(vinyl phenol) (PVPh) all have the same characteristic: miscibility with atactic poly(methyl methacrylate) (aPMMA). However, the miscibility of Saran F with the other polymer (phenoxy, PSAN, or PVPh) is not guaranteed and was thus investigated. Saran F was found to be miscible only with PSAN but not miscible with phenoxy and PVPh. Because Saran F and PVPh are not miscible, although they are both miscible with aPMMA, aPMMA can thus be used as a potential cosolvent to homogenize PVPh/Saran F. The second part of this report focused on the miscibility of a ternary blend consisting of Saran F, PVPh, and aPMMA to investigate the cosolvent effect of aPMMA. Factors affecting the miscibility were studied. The established phase diagram indicated that the ternary blends with high PVPh/Saran F weight ratio were found to be mostly immiscible. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 91: 3068–3073, 2004
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Phase Behavior of Ternary Blends of Tactic Poly(methyl methacrylate)s and Poly(vinylidene chloride-co-acrylonitrile)
Polymer Journal, 2000Co-Authors: Wen-ping HsuAbstract:Previously, isotactic and atactic poly(methyl methacrylate)s (PMMAs) were found to be miscible with poly(vinylidene chloride- co -acrylonitrile) (Saran F) because all the prepared films were transparent and showed composition dependent glass transition temperatures ( T _gs). However, the syndiotactic PMMA/Saran F blends were immiscible because most of the cast films were translucent and had two glass transition temperatures. Atactic PMMA is known to be miscible with syndiotactic PMMA according to literature. So atactic PMMA is miscible with both Saran F and syndiotactic PMMA but Saran F and syndiotactic PMMA are immiscible. It will be interesting to study the miscibility of ternary blends of atactic and syndiotactic PMMAs and Saran F. Therefore an investigation based on this is reported in this article. Calorimetry was used as the principal tool to study miscibility. A blend composed of atactic and syndiotactic PMMAs was prepared previously and confirmed to be miscible. An approximate phase diagram of the ternary blends was established based on differential scanning calorimetry data. The results indicated that for all the studied compositions, the thernary blends were determined to be miscible. Most of the blend T _g values were fitted well by the Fox equation. For the syndiotactic PMMA/Saran F (wt ratio=1) blend, adding of at least 12.5 wt% of atactic PMMA was sufficient to cause the immiscible blends to be miscible.
M.j.d. Low - One of the best experts on this subject based on the ideXlab platform.
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Spectroscopic studies of carbon. XX. The pyrolysis of polyvinylidene chloride and of Saran
Materials Chemistry and Physics, 1991Co-Authors: M.l. O'shea, C. Morterra, M.j.d. LowAbstract:Abstract Fourier transform photothermal beam deflection spectroscopy was used to record the spectra of chars produced by heating in vacuo pure polyvinylidene chloride (PVDC) and the copolymer Saran over the 100–690°C range. The infrared spectra obtained provide direct information about the degradation and subsequent carbonization of PVDC and Saran. Pyrolysis of both homopolymer and copolymer at T = 200°C results in the destruction of the original ordered vinylidene structure and there is spectroscopic evidence for the formation of polyenic sequences. At T>200°C the spectra show the development of an increasingly aromatic system with rings containing evidence of chlorine substitution. As pure polyvinylidene chars contain 50% less hydrogen than their polyvinyl counterparts, the spectra of chars obtained at T>400°C show little vibrational structure in the region >2000 cm−1, and at degradation temperatures >500°C no vibrational features are observable over the entire 4000 - 500 cm−1 range. In contrast, the inclusion of only a small percentage of vinyl monomer in the copolymer Saran results in chars whose spectra exhibit vibrational features up to degradation temperatures of 690°C. The spectroscopic character of PVDC and Saran chars and their oxidation are discussed in detail. In addition, these results are compared and contrasted with earlier analyses of the chars of polyvinyl chloride and polyvinylidene fluoride.
Simon Shackley - One of the best experts on this subject based on the ideXlab platform.
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Sustainable gasification–biochar systems? A case-study of rice-husk gasification in Cambodia, Part I: Context, chemical properties, environmental and health and safety issues
Energy Policy, 2012Co-Authors: Simon Shackley, Sarah Carter, Tony Knowles, Erik Middelink, Stephan M. Haefele, Saran Sohi, Andrew Cross, Stuart HaszeldineAbstract:Abstract not availableSimon Shackley, Sarah Carter, Tony Knowles, Erik Middelink, Stephan Haefele, Saran Sohi, Andrew Cross, Stuart Haszeldin
Ming Gao - One of the best experts on this subject based on the ideXlab platform.
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Pilot-scale experiments on multilevel contact oxidation treatment of poultry farm wastewater using Saran lock carriers under different operation model.
Journal of environmental sciences (China), 2018Co-Authors: Tianlong Zheng, Qunhui Wang, Xiaohong Sun, Ming GaoAbstract:Abstract A pilot-scale multilevel contact oxidation reactors system, coupled with Saran lock carriers, was applied for the treatment of poultry farm wastewater. The removal efficiencies of CODcr, ammonia, and the total nitrogen as well as the elimination performance of CODcr and total nitrogen along the three-level contact oxidation tanks under six designed operational models were investigated. Based on the performance of the nitrogen removal of the Saran lock carriers and the distribution of anoxic–aerobic interspace under the suitable operation model, the mechanism of nitrogen removal of the system was also explored. The results revealed that the intermittent aeration under parallel model is the most suitable operation model, while the removal efficiencies of CODcr, ammonia, and the total nitrogen were 86.86%, 84.04%, and 80.96%, respectively. The effluent concentration of CODcr, ammonia, and the total nitrogen were 55.6 mg/L, 8.3 mg/L, and 12.0 mg/L, which satisfy both the discharge standard of pollutants for livestock and poultry breeding industry (GB 18596–2001) and the first grade of the integrated wastewater discharge standard (GB 8978–1996). Moreover, the mechanism for the nitrogen removal should be attributed to the plenty of anoxic–aerobic interspaces of the biofilm and the three-dimensional spiral structure of the Saran lock carriers, where the oxygen-deficient distribution was suitable for the happening of the simultaneous nitrification and denitrification process. Therefore, the multilevel contact oxidation tanks system is an effective pathway for the treatment of the poultry farm wastewater on the strength of a suitable operation model and novel carriers.
