Author Publications

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Number of items: 43.

2010

McKenna, Timothy F.L. and Di Martino, Audrey and Weickert, Günter and Soares, Joao B.P. (2010) Particle Growth During the Polymerisation of Olefins on Supported Catalysts, 1 – Nascent Polymer Structures. Macromolecular Reaction Engineering, 4 (1). pp. 40-64. ISSN 1862-832X

2009

Eriksson, Erik J.G. and Weickert, Günter and McKenna, Timothy F. (2009) Heat Transfer in Gas-Phase Olefin Polymerisation: A Study of Particle/Surface Interactions. Macromolecular Reaction Engineering, 4 (2). pp. 95-108. ISSN 1862-832X

2008

Al-Haj Ali, M. and Stoomer, J. and Betlem, B. and Weickert, G. and Roffel, B. (2008) Molecular weight distribution broadening of polypropylene by periodic switching of hydrogen and catalyst additions. Journal of Applied Polymer Science, 108 (4). pp. 2446-2457. ISSN 0021-8995

2007

Al-haj Ali, M. and Betlem, B. and Weickert, G. and Roffel, B. (2007) Non-linear model based control of a propylene polymerization reactor. Chemical Engineering and Processing, 46 (6). pp. 554-564. ISSN 0255-2701

Ali, Mohammad Al-haj and Betlem, Ben and Roffel, Brian and Weickert, Günter (2007) Estimation of the Polymerization Rate of Liquid Propylene Using Adiabatic Reaction Calorimetry and Reaction Dilatometry. Macromolecular Reaction Engineering, 1 (3). pp. 353-363. ISSN 1862-832X

Di Martino, Audrey and Broyer, Jean-Pierre and Schweich, Daniel and Bellefon, Claude de and Weickert, Günter and McKenna, Timothy F.L. (2007) Design and Implementation of a Novel Quench Flow Reactor for the Study of Nascent Olefin Polymerisation. Macromolecular Reaction Engineering, 1 (2). pp. 284-294. ISSN 1862-832X

Di Martino, Audrey and Weickert, Günter and McKenna, Timothy F.L. (2007) Contributions to the Experimental Investigation of the Nascent Polymerisation of Ethylene on Supported Catalysts, 2a : Influence of Reaction Conditions. Macromolecular Reaction Engineering, 1 (2). pp. 229-242. ISSN 1862-832X

Di Martino, Audrey and Weickert, Günter and McKenna, Timothy F.L. (2007) Contributions to the Experimental Investigation of the Nascent Polymerisation of Ethylene on Supported Catalysts, 1: A Quenched-Flow Apparatus for the Study of Particle Morphology and Nascent Polymer Properties. Macromolecular Reaction Engineering, 1 (1). pp. 165-184. ISSN 1862-832X

Di Martino, Audrey and Weickert, Günter and Sidoroff, Francois and McKenna, Timothy F. (2007) Modelling Induced Tension in a Growing Catalyst/Polyolefin Particle: A Multi-Scale Approach for Simplified Morphology Modelling. Macromolecular Reaction Engineering, 1 (3-5). pp. 338-352. ISSN 1862-832X

Putten, I.C. van and Sint Annaland, M. van and Weickert, G. (2007) Fluidization behavior in a circulating slugging fluidized bed reactor. Part I: Residence time and residence time distribution of polyethylene solids. Chemical Engineering Science, 62 (9). pp. 2522-2534. ISSN 0009-2509

Putten, I.C. van and Sint Annaland, M. van and Weickert, G. (2007) Fluidization behavior in a circulating slugging fluidized bed reactor. Part II: Plug characteristics. Chemical Engineering Science, 62 (9). pp. 2535-2544. ISSN 0009-2509

Stern, Claudia and Frick, Achim and Weickert, Günter (2007) Relationship between the structure and mechanical properties of polypropylene: Effects of the molecular weight and shear-induced structure. Journal of Applied Polymer Science, 103 (1). pp. 519-533. ISSN 0021-8995

2006

Al-haj Ali, M. and Betlem, B. and Roffel, B. and Weickert, G. (2006) Hydrogen response in liquid propylene polymerization: Towards a generalized model. AIChE Journal, 52 (5). pp. 1866-1876. ISSN 0001-1541

Zheng, Xuejing and Pimplapure, Makarand S. and Weickert, Günter and Loos, Joachim (2006) Influence of Copolymerization on Fragmentation Behavior Using Ziegler-Natta Catalysts. Macromolecular Rapid Communications, 27 (1). pp. 15-20. ISSN 1022-1336

2005

Bergstra, Michiel F. and Weickert, Günter (2005) Ethylene Polymerization Kinetics with a Heterogeneous Metallocene Catalyst - Comparison of Gas and Slurry Phases. Macromolecular Materials and Engineering, 290 (6). pp. 610-620. ISSN 1438-7492

Di Martino, Audrey and Broyer, Jean Pierre and Spitz, Roger and Weickert, Günter and McKenna, Timothy F. (2005) A Rapid Quenched-Flow Device for the Characterisation of the Nascent Polymerisation of Ethylene under Industrial Conditions. Macromolecular Rapid Communications, 26 (4). pp. 215-220. ISSN 1022-1336

Pimplapure, M.S. and Zheng, Xuejing and Loos, Joachim and Weickert, Günter (2005) Low-Rate Propylene Slurry Polymerization: Morphology and Kinetics. Macromolecular Rapid Communications, 26 (14). pp. 1155-1158. ISSN 1022-1336

Pimplapure, Makarand S. and Weickert, Günter (2005) Catalytic Polymerization of Liquid Propylene: Effect of Low-Yield Hexene Prepolymerization on Kinetics and Morphology. Macromolecular Rapid Communications, 26 (16). pp. 1294-1298. ISSN 1022-1336

Stern, Claudia and Frick, Achim R. and Weickert, Günter and Michler, Georg H. and Henning, Sven (2005) Processing, Morphology, and Mechanical Properties of Liquid Pool Polypropylene with Different Molecular Weights. Macromolecular Materials and Engineering, 290 (6). pp. 621-635. ISSN 1438-7492

Stern, Claudia and Frick, Achim Robert and Pater, Joachim Theodorus Maria and Weickert, Günter (2005) Comparison of Gas and Liquid Propylene Polymerization Technique - Hydrogen Effect on Thermal, Rheological, and Morphological Properties of PP. Macromolecular Materials and Engineering, 290 (4). pp. 372-383. ISSN 1438-7492

Weickert, G. and Dittrich, C. (2005) New Reactor Concepts for the Gas-Phase Polymerization of Olefins. Chemie-Ingenieur-Technik, 77 (8). pp. 977-978. ISSN 0009-286X

2004

Pater, Jochem T.M. and Weickert, Günter and Fait, Anna and Mei, Gabriele (2004) Measurement of in situ Monomer Sorption in Poly(propylene). Macromolecular Rapid Communications, 25 (18). pp. 1638-1642. ISSN 1022-1336

2003

Pater, Jochem T.M. and Weickert, Günter and Swaaij, Wim P.M. van (2003) Optical and infrared imaging of growing polyolefin particles. AIChE Journal, 49 (2). pp. 450-464. ISSN 0001-1541

Pater, Jochem T.M. and Weickert, Günter and Swaaij, Wim P.M. van (2003) Propene bulk polymerization kinetics: Role of prepolymerization and hydrogen. AIChE Journal, 49 (1). pp. 180-193. ISSN 0001-1541

Pater, Jochem T.M. and Weickert, Günter and Swaaij, Wim P.M. van (2003) Polymerization of liquid propylene with a fourth-generation Ziegler-Natta catalyst: Influence of temperature, hydrogen, monomer concentration, and prepolymerization method on powder morphology. Journal of Applied Polymer Science, 87 (9). pp. 1421-1435. ISSN 0021-8995

2002

Meier, G.B. and Weickert, G. and Swaaij, W.P.M. van (2002) FBR for catalytic propylene polymerization: Controlled mixing and reactor modeling. AIChE Journal, 48 (6). pp. 1268-1283. ISSN 0001-1541

Parasu Veera, U. and Weickert, G. and Agarwal, U.S. (2002) Modeling monomer transport by convection during olefin polymerization. AIChE Journal, 48 (5). pp. 1062-1070. ISSN 0001-1541

Pater, Jochem T.M. and Weickert, Günter and Swaaij, Wim P.M. van (2002) Polymerization of liquid propylene with a 4th generation Ziegler-Natta catalyst-influence of temperature, hydrogen and monomer concentration and prepolymerization method on polymerization kinetics. Chemical Engineering Science, 57 (16). pp. 3461-3477. ISSN 0009-2509

2001

Meier, G.B. and Weickert, G. and Swaaij, W.P.M. van (2001) Comparison of gas- and liquid-phase polymerization of propylene with heterogeneous metallocene catalyst. Journal of Applied Polymer Science, 81 (5). pp. 1193-1206. ISSN 0021-8995

Meier, G.B. and Weickert, G. and Swaaij, W.P.M. van (2001) Gas-phase polymerization of propylene: Reaction kinetics and molecular weight distribution. Journal of Polymer Science, Part A: Polymer chemistry, 39 (4). pp. 500-513. ISSN 0887-624X

Pater, Jochem T.M. and Weickert, Günter and Swaaij, Wim P.M. van (2001) New Method for Online Observation of Growing Polyolefin Particles. Chimia, 55 (3). pp. 231-233. ISSN 0009-4293

Pater, Jochem T.M. and Weickert, Günter and Loos, Joachim and Swaaij, Wim P.M. van (2001) High precision prepolymerization of propylene at extremely low reaction rates-kinetics and morphology. Chemical Engineering Science, 56 (13). pp. 4107-4120. ISSN 0009-2509

Shimizu, Fumihiko and Pater, Jochem T.M. and Swaaij, Wim P.M. van and Weickert, Günter (2001) Kinetic study of a highly active MgCl2-supported Ziegler-Natta catalyst in liquid pool propylene polymerization. II. The influence of alkyl aluminum and alkoxysilane on catalyst activation and deactivation. Journal of Applied Polymer Science, 83 (12). pp. 2669-2679. ISSN 0021-8995

Shimizu, Fumihiko and Pater, Jochem T.M. and Weickert, Günter (2001) Three-site mechanism and molecular weight: Time dependency in liquid propylene batch polymerization using a MgCl2-supported Ziegler-Natta catalyst. Journal of Applied Polymer Science, 81 (4). pp. 1035-1047. ISSN 0021-8995

1999

Samson, Job Jan C. and Bosman, Peter J. and Weickert, Günter and Westerterp, K. Roel (1999) Liquid-phase polymerization of propylene with a highly active Ziegler-Natta catalyst. Influence of hydrogen, cocatalyst, and electron donor on the reaction kinetics. Journal of Polymer Science, Part A: Polymer chemistry, 37 (2). pp. 219-232. ISSN 0887-624X

Samson, Job Jan C. and Middelkoop, Bart van and Weickert, Günter and Westerterp, K. Roel (1999) Gas-phase polymerization of propylene with a highly active ziegler-natta catalyst. AIChE Journal, 45 (7). pp. 1548-1558. ISSN 0001-1541

Weickert, G. and Meier, G.B. and Pater, J.T.M. and Westerterp, K.R. (1999) The particle as microreactor: catalytic propylene polymerizations with supported metallocenes and Ziegler-Natta catalysts. Chemical Engineering Science, 54 (15-16). pp. 3291-3296. ISSN 0009-2509

1998

Samson, Job Jan C. and Weickert, Günter and Heerze, Anneleis E. and Westerterp, K. Roel (1998) Liquid-phase polymerization of propylene with a highly active catalyst. AIChE Journal, 44 (6). pp. 1424-1437. ISSN 0001-1541

1997

Roos, Peter and Meier, Gerben B. and Samson, Job Jan C. and Weickert, Günter and Westerterp, K. Roel (1997) Gas phase polymerization of ethylene with a silica-supported metallocene catalyst: influence of temperature on deactivation. Macromolecular Rapid Communications, 18 (4). pp. 319-324. ISSN 1022-1336

Tefera, N. and Weickert, G. and Westerterp, K.R. (1997) Modeling of free radical polymerization up to high conversion. II. Development of a mathematical model. Journal of Applied Polymer Science, 63 (12). pp. 1663-1680. ISSN 0021-8995

Tefera, N. and Weickert, G. and Westerterp, K.R. (1997) Modeling of free radical polymerization up to high conversion. I. A method for the selection of models by simultaneous parameter estimation. Journal of Applied Polymer Science, 63 (12). pp. 1649-1661. ISSN 0021-8995

1996

Samson, J.J.C. and Westenbroek, A.P.H. and Kuipers, J.A.M. and Weickert, G. and Westerterp, K.R. (1996) Modelling of the heat and mass transfer in a single particle during the polymerization of propylene with highly active catalysts. In: XIII International Conference on Chemical Reactors, Chemreactor-13, June 18-21, 1996, Novosibirsk, Russia (pp. pp. 79-84).

1994

Tefera, Nurelegne and Weickert, Günter and Bloodworth, Robert and Schweer, Johannes (1994) Free radical suspension polymerization kinetics of styrene up to high conversion. Macromolecular Chemistry and Physics, 195 (9). pp. 3067-3085. ISSN 1022-1352

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