Principle of ACOMP: Continuously extract and dilute viscous reactor liquid producing a stream through the detectors so dilute that detector signals are dominated by the properties of single polymers, not their interactions. (ACOMP is a non-chromatographic method)
Features:
Acomp set-up:
ACOMP history - as a continuously updated technique
In the beginning…
Front-end with Shimadzu HPLC pumps and back-end with a 7 angle light scattering unit built by us and Shimadzu UV detectors.
Our home-built light scattering prototype is now commercialized by Brookhaven Instruments as a modern and powerful light scattering detector (BI-MwA)...
A more modern version of ACOMP was put together in our labs: flexible front-end (right) and detector train platforms (left)
Now…
The newest addition is a customized ACOMP platform, commercialized by Polymer Laboratories, recently entered into a licensing agreement with Tulane University.
ACOMP Publications appeared or in press
1. F. H. Florenzano; R. Strelitzki; W. F. Reed, "Absolute, Online Monitoring of Polymerization Reactions", Macromolecules 1998, 31(21), 7226-7238.
2. J.-L. Brousseau; H. Ç. Giz; W. F. Reed, "Automatic, Simultaneous Determination of Differential Refractive Index of a Polymer and its Corresponding Monomer", J. App. Pol. Sci. 2000, 77, 3259-3262.
3. W. F. Reed, "A Method for Online Determination of Polydispersity during Polymerization Reactions", Macromolecules 2000 , 33, 7165-7172.
4. W. F. Reed, "Breaking new ground in polymer science with molecular weight analysis", invited article, American Laboratory 2000 , 32(16), 20-25.
5. A. Giz; H. Giz, J. L. Brousseau; A. Alb; W. F. Reed, "Kinetics and Mechanism of Acrylamide Polymerization by Absolute, Online Monitoring of Polymerization Kinetics", Macromolecules 2001, 34(5), 1180-1191.
6. A. Giz; H. Giz; J. L. Brousseau; A. Alb; W. F. Reed, "Online Monitoring of a Stepwise Polymerization Reaction: Polyurethane", J. App. Polym. Sci. 2001, 82, 2070- 2077.
7. B. Grassl; A. Alb; W. F. Reed, " Free radical transfer rate determination using online polymerization monitoring", Macromol. Chem. Phys. 2001, 202(12), 2518-2524.
8. B. Grassl; W. F. Reed, "Online polymerization monitoring in a continuous tank reactor", Macromol. Chem. Phys. 2002, 203, 586-597.
9. F. Chauvin; A. M. Alb; D. Bertin; W. F. Reed, "Kinetics and molecular weight evolution during controlled radical polymerization", Macromol.Chem. Phys. 2002, 203 (14), 2029-2040.
10. A. Giz; A. O. Koc; H. Giz; A. Alb; W. F. Reed "Online monitoring of reactivity ratios, composition, sequence length, and molecular weight distributions during free radical copolymerization", Macromolecules 2002, 35 , 6557- 6571.
11. W. F. Reed, "Monitoring Kinetic Processes in Polymer Solutions with Time Dependent Static Light Scattering (TDSLS)", Ch. 12, pp. 131-151, in Scattering Methods for the Investigation of Polymers, J. Kahovec, Ed., Wiley VCH, 2002
12. W. F. Reed; A. M. Alb; E. Mignard; H. Giz; A. Giz; F. H. Florenzano; R. Farinato "Automatic Continuous Online Monitoring of Polymerization Reactions (ACOMP) ", Polymeric Materials: Science and Engineering 2003, 88 , 476-478.
13. E. Mignard; O. Guerret; D. Bertin; W. F. Reed "Automatic Continuous Online Monitoring of Polymerization Reactions (ACOMP) of High Viscosity Reactions", Polymeric Materials: Science and Engineering 2003, 88 , 314-316.
14. W. F. Reed, "Automatic, Continuous Mixing Techniques for Online Monitoring of Polymer Reactions and for the Determination of Equilibrium Properties", ch. 20, pp. 589- 622, Handbook of Size Exclusion Chromatography and Related Techniques", 2nd Ed., Chi-san Wu, Ed., Marcel Dekker, 2003 .
15. H. Çatalgil-Giz; A. Giz,; A. M. Alb; W. F. Reed, "Absolute Online Monitoring of Acrylic acid Polymerization and the Effect of Salt and pH on Reaction Kinetics", J. Appl. Pol. Sci. 2004, 91, 1352-1359.
16. D. Sunbul; H. Catalgil-Giz; W. F. Reed; A. Giz, "An error in variables method for determining the reactivity ratios by on-line monitoring of copolymerization reactions", Macromolecular Theory and Simulation 2004, 13, 162-168.
17. E. Mignard, T. Leblanc, D. Bertin, O. Guerret, W. F. Reed "Online monitoring of controlled radical polymerization : Nitroxide mediated gradient copolymerization", Macromolecules 2004, 37, 966-975.
18. W. F. Reed, "Automatic Continuous Online Monitoring of Polymerization reactions (ACOMP)", Feature Article, Polymer News 2004, 29, 271-279.
19. F. H. Florenzano; V. Fleming; P. Enohnyaket; W. F. Reed, "Coupling of Near Infra-Red spectroscopy to Automatic Continuous Online Monitoring of Polymerization Reactions", European Polymer Journal 2005, 41, 535-545.
20. R. S. Farinato; J. Calbick; G. A. Sorci; F. H. Florenzano; W. F. Reed, "Online monitoring of the final divergent growth phase in the stepgrowth polymerization of polyamines" Macromolecules 2005, 38, 1148-1158.
21. E. Mignard; J.-F. Lutz; T. Leblanc; K. Matyjaszewski; O. Guerret; W. F. Reed, “Kinetics and Molar Mass Evolution during Atom Transfer Radical Polymerization of n-Butyl Acrylate Using Automatic Continuous Online Monitoring”, Macromolecules 2005, 38, 9556-9563.
22. A. M. Alb; R. Farinato; J. Calbeck; W. F. Reed, “Online monitoring of polymerization reactions in inverse emulsions”, Langmuir 2006, 22, 831-840.
23. A. M. Alb; P. Enohnyaket; M. Drenski; A. Head; A. W. Reed; W. F. Reed, “Online monitoring of copolymerization using comonomers of similar spectral characteristics”, Macromolecules 2006, 39, 5705-5713.
24. A. M. Alb; P. Enohnyaket; R. Shunmugam; G. N. Tew; W. F. Reed, “Quantitative contrasts in the copolymerization of acrylate and methacrylate monomers”, Macromolecules 2006, 39, 8283-8292.
25. M. F. Drenski; E. Mignard ; W. F. Reed, “Direct Measurement of Chain Transfer during Controlled Radical Polymerization”, Macromolecules 2006, 39, 8213-8215.
26. A. M. Alb; P. Enohnyaket; J. F. Craymer; T. Eren; E. B. Coughlin, W. F. Reed, “Online monitoring of Ring Opening Metathesis Polymerization of Cyclooctadiene and a Functionalized Norbornene”, Macromolecules 2007, 40, 444-451.
27. A. M. Alb; A. Paril; H. Çatalgil-Giz; A. Giz; W. F. Reed , “Evolution of composition, molar mass, and conductivity during the free radical copolymerization of polyelectrolytes”, J. Phys. Chem . 3/07
28. A. Paril; A. M. Alb; W. F. Reed, “ Online Monitoring of the Evolution of Polyelectrolyte Characteristics during Postpolymerization Modification Processes” Macromolecules 2007, 40, 4409-4413.
29. A. M. Alb; M. F. Drenski; W. F. Reed, "Monitoring of Polymerization and other Polymeric Processes in Solution", invited article for Progress in Polymer Science . In press.