NAMS 2002 Workshop - ICOM 2008

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Facilitated Transport Membranes – 6 Friday July 18, 12:15 PM-12:45 PM, Wai’anae Selectivity and Stability of Facilitated Transport Membranes Containing Silver Nanoparticles for Propylene Separation L. Pollo (Speaker), Federal University of Rio de Janeiro, Rio de Janeiro, Brazil A. Habert, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil C. Borges, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil - cristiano@peq.coppe.ufrj.br Propylene is the key building block for the production of important petrochemical products, such as polypropylene, acrylonitrile, propylene oxide, cumene, phenol, isopropylic alcohol and many others. The worldwide demand for propylene has been increasing at 5.7% a year since 1990, with a forecast of 84 million tons for 2010. To obtain propylene many successive stages of distillation are necessary, the separation of propane and propylene being the most difficult and expensive. With close molecular sizes and relative volatility, distillation towers must run at high rates of reflux extreme pressure and temperature conditions, with a high energy cost. Polymeric membranes have long been used in the separation of mixtures, like oxygen from air, carbon dioxide from methane, and the dehumidification of air amongst others. Nevertheless, conventional polymeric membranes are not competitive for the separation of olefin/paraffin mixtures, due to an unfavorable tradeoff of selectivity and permeability. Similar physicochemical properties and molecular size of these compounds are indeed limitations for membrane separation based on sorption/diffusion mechanism. One alternative that has been sought is a simultaneous increase of permeability and selectivity by incorporating in the membrane matrix specific agents that interact reversibly with propylene but not with propane. In this way, propylene permeation occurs by facilitated transport mechanism. Our research group has been investigating silver salts as propylene carriers, obtaining very good results. However, silver salts have a low chemical stability resulting in the loss of transport activity over long periods of time. In order to overcome this problem, this work investigates the use of metallic silver nanoparticles in polyurethane composite membranes. Metallic nanoparticles have attracted much attention due to their unique physicochemical properties. The silver nanoparticles were photogenerated in situ in the polyurethane matrix using UV light radiation and AgCF3SO3 salt as precursor. The composite membrane was prepared by coating a commercial microfiltration membrane of nylon. It was observed an improved stability of silver nanoparticles, which may
elated to the presence of free electrons in functional groups of the polymer chain. The membranes also showed excellent performance for propylene/propane separation at 25ºC and 4 bar. A propylene/propane ideal selectivity of 100 and propylene permeability of 4 GPU were obtained. After 180 hours of continuous permeation, the membrane performance still was unchanged.
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ICOM 2008 Oral Presentation Proceed
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Professor Yoram Cohen Professor Joh
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ICOM 2008 Staff: The University of
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ICOM 2008 Workshop Schedule: Saturd
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Monday, July 14 - Afternoon Session
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Tuesday, July 15 - Afternoon Sessio
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8:15AM 8:35AM EMS Barrer Prize (Mau
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Friday, July 18 - Morning Sessions
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Oral Presentation Abstracts Morning
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Gas Separation I - 1 - Keynote Mond
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esulting permeability selectivity o
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chain packing. To ensure a well pha
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Gas Separation I - 5 Monday July 14
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satisfactory way the corresponding
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Drinking and Wastewater Application
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an adjusted water management in the
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prospect for new energy sources as
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oxygen removal to the desired pH. C
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(Cl - , SO4 2- , As(V)) and water t
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[1] R. Lima de Miranda, J. Kruse, K
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Polymeric Membranes I - 4 Monday Ju
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Polymeric Membranes I - 5 Monday Ju
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Biomedical and Biotechnology I - 1
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Acknowledgments The Authors acknowl
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isolation of CD34+ cells was achiev
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membranes were then challenged with
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in crossflow mode operation were in
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hydroxide. For Mg/Ca = 0, the fouli
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improvement of filterability also t
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scale where fouling rates are commo
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observed in two subsequence phenome
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Membrane Modeling I - Fundamental A
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Membrane Modeling I - Fundamental A
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of the impact of the operating para
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Oral Presentation Abstracts Afterno
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Hybrid and Novel Processes I - 2 Mo
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Arora, M.B., J.A. Hestekin, S.W. Sn
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Conclusions Reverse electrodialysis
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energy recovery. This is a remarkab
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eaction with mediator due to the co
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Nanofiltration and Reverse Osmosis
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4.3x10 -6 to 7.4x10 -6 cm 2 /s. Bas
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The development of these membranes
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permeability, defined as water perm
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supports including charged (PSF/SPE
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[4] L. M. Robeson, Journal of Membr
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y conventional polymers and provide
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[3] P.M. Budd, K.J. Msayib, C.E. Ta
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Nanostructured Membranes I - 5 Mond
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Fuel Cells I - 1 Monday July 14, 2:
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investigated at first. As a result,
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Desalination I - 2 Monday July 14,
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Composite Polymeric Membrane Format
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NAMS Alan S. Michaels Award - 1a Tu
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NAMS Alan S. Michaels Award - 2 Tue
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opportunities for improving membran
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NAMS Alan S. Michaels Award - 4b Tu
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[4] K. Vanherck et al. Accepted for
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accumulation had a strong effect on
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and, if so, to develop correlations
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non-porous and porous membranes are
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[2] Palmeri, J., Sandeaux, R. Sande
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fouling. Information obtained from
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This work performed under the auspi
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etween Ru(bi-pyridine)3 2+ and meth
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[1] M. Barboiu, C. Luca, C. Guizard
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Nanostructured Membranes II - 5 Tue
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Nanostructured Membranes II - 6 Tue
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than 10 nm. XRD data suggest that t
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Pervaporation and Vapor Permeation
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ethanol/butanol (non solvent) combi
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forward osmosis, the RO process is
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Osmotically Driven Membrane Process
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References: [1] Stupp, S. I.; Lebon
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temperatures might bring about the
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References [1] S. Benita, Microenca
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solvent, were investigated (where a
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ease of manipulation as this allows
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Horizontal shrinkage does not have
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Absorption of water was determined
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Gas Separation II - 1 - Keynote Tue
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Gas Separation II - 2 Tuesday July
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concentration. These results are co
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Gas Separation II - 5 Tuesday July
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will be shown that homogeneous film
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which can adsorb on the surface of
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were collected, the viable bacteria
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pressure, and permporosimetry with
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Inorganic Membranes I - 3 Tuesday J
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Membrane Fouling - UF & Water Treat
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Membrane Modeling II - Gas Separati
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[10] Wang BG, Lv HL, Yang JC. Chem
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Membrane and Surface Modification I
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Gas Separation III - 1 - Keynote We
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Gas Separation III - 2 Wednesday Ju
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separation was next blended with di
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Polymeric Membranes II - 1 - Keynot
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Polymeric Membranes II - 3 Wednesda
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5. Erdodi, G.; Kennedy, J. P.; Prog
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observed for different locations in
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Biomedical and Biotechnology II - 3
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applied in the first two fields wil
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distribution of SBMA units within t
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5500 ppm (15 mM) was lowered to 30
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increasing the effective size of th
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etween 0 and 1), the automatic feed
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Membrane Modeling III - Process Sim
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Membrane Modeling III - Process Sim
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models developed suggests that ther
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start level has a huge impact on th
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Ultra- and Microfiltration I - Tran
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all three binary protein UF systems
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Synthetic solutions of ±-lactalbum
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Gas Separation IV - 2 Thursday July
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6. T. C. Merkel, Z. He, I. Pinnau,
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EMS Barrer Prize - 1b Thursday July
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EMS Barrer Prize - 3 Thursday July
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EMS Barrer Prize - 4b Thursday July
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EMS Barrer Prize - 5 Thursday July
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therapy options have been modelled
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Ultra- and Microfiltration II - Pro
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in the vicinity of the rising bubbl
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of feed water ionic strength) on re
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technology that has gained growing
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Optimize polymeric membranes for sa
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Inorganic Membranes II - 2 Thursday
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confirms that the carbon dioxide pe
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permeability, stability issues comp
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Fuel Cells II - 2 Thursday July 17,
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5. Conclusion In this work, the evo
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Oral Presentation Abstracts Afterno
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an essentially pure H2 product is c
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In the presentation, we will presen
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was observed, indicative of the sim
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References Arora, M.B., J.A. Hestek
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performance of fibers is analyzed a
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Membrane Fouling III - RO & Biofoul
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[4] H. Noureddini, Book of Abstract
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component (PX, OX) separation via p
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Generally these results were in goo
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introduction of methyl groups into
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separation quality (10 µS/cm) and
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Desalination II - 3 Thursday July 1
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drop are linearly related (although
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antiscalant oxidation has been limi
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oth 15±5 kDa, which suggests that
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Atomic Force Microscopy (AFM), and
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y single gas permeation experiments
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PDMS toplayers were only partially
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noting that cross-linking agents co
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such extended parameter space in th
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Hybrid Membranes - 6 Thursday July
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Plenary Lecture III Friday July 18.
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Gas Separation V - 1 - Keynote Frid
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References: [1] H. Lin, E. Van Wagn
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elative contributions of Fickian di
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Page 473 and 474: Electron Microscopy (TEM) analyses
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Page 511 and 512: CO2/H2 selectivity at high temperat
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Page 523 and 524: Pervaporation and Vapor Permeation
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Page 539 and 540: Results Critical flux measurements
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Page 555 and 556: can be deduced from the imaginary p
Page 557 and 558: membranes. The analysis of the ligh
Page 559 and 560: Membrane Contactors - 2 Friday July
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Packaging and Barrier Materials - 3
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Historically, all the approaches de
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Packaging and Barrier Materials - 6
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NAMS 2002 Workshop - ICOM 2008

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