Haskell W. Beckham, Ph.D.
Facilities, Other Publications
Topologically Complex Macromolecules
Discovery and Exploration of New Materials.
Rotaxanated polymers consist of cyclic molecules threaded onto linear polymer segments. These topological copolymers combine the characteristics of the two components in ways that yield bulk properties that are different from analogous block or graft copolymers. We are examining the molecular dynamics, phase structures, and bulk properties of these materials using a variety of physical techniques.
"Ring Polymers: Effective Isolation and Unique Properties", In Complex Macromolecular Architectures: Synthesis, Characterization, and Self-Assembly, N Hadjichristidis, Y Tezuka, A Hirao, F Du Prez, Eds.; John Wiley and Sons, 2011, pp 791-821; HW Beckham.
"Cyclic Poly(dimethylsiloxane) via Ring-Closing Dehydrocoupling of a,w-Dihydroxy-PDMS with a,w-Dihydrido-PDMS in Dilute Solution", Polymer2010, 51, 2515-2519; M Foston, HW Beckham.
"Cyclic Poly(dimethylsiloxane) from Kinetically Controlled Cyclodepolymerization of Linear Precursors in Dilute Solution", Polymer2010, 51, 2112-2118; M Foston, HW Beckham.
"Melt Dynamics of Blended Poly(oxyethylene) Chains and Rings", Macromolecules2009, 42, 3121-3128; S Nam, J Leisen, V Breedveld, HW Beckham.
"Dynamics of Unentangled Cyclic and Linear Poly(oxyethylene) Melts", Polymer2008, 49, 5467-5473; S Nam, J Leisen, V Breedveld, HW Beckham.
"Miscible Blends of Cyclic Poly(oxyethylene)
in Linear Polystyrene", Macromolecules2008,41(24), 9784-9792; S Singla, HW Beckham.
"Solid Inclusion Complexes of a-Cyclodextrin and Perdeuterated Polyoxyethylene", Macromolecules2005, 38(6), 2261-2270; TE Girardeau, T Zhao, J Leisen, HW Beckham, and DG Bucknall.
"Direct Synthesis of Cyclodextrin-Rotaxanated Poly(ethylene glycol)s and their Self-Diffusion Behavior in Dilute Solution", Macromolecules2003,36(26), 9859-9865; T Zhao and HW Beckham.
"Purification of Cyclic Polymers Prepared from Linear Precursors by Inclusion Complexation of Linear Byproducts with Cyclodextrins", Macromolecules2003,36(18), 6945-6948; S Singla, T Zhao and HW Beckham.
"Quantitative Determination of Threading in Rotaxanated Polymers by Diffusion-Ordered NMR Spectroscopy", Macromolecules2003,36(13), 4833-4837; T Zhao, HW Beckham and HW Gibson.
"Synthesis and Efficient Purification of Cyclic Polydimethylsiloxane", Macromolecules2002,35, 5345-5348; BM White, WP Watson, EE Barthelme, and HW Beckham.
"Solid-State NMR Investigations of Poly[(acrylonitrile)-rotaxa-(60-crown-20)]", Macromolecules 1999, 32, 3025-3033; with K Nagapudi, J Leisen and HW Gibson.
"Synthesis, Dynamic Mechanical, and Solid-State NMR Spectroscopy of Crown-Ether-Based Aliphatic Polyurethane Rotaxanes", Macromol. Chem. Phys. 1999, 200, 2541-2550; with K Nagapudi, J Hunt, J Baker, and C Shepherd.
Wicking, Drying, Flow, Pore Structure Analysis, Absorbent Products, Liquid-Liquid Extractions.
Uptake and loss of water are among the most important functions of textiles and other fibrous substrates, impacting both their manufacture as well as end-use application. Nuclear magnetic resonance (NMR) is the basis of a particularly powerful suite of techniques with which to examine water (and other fluids) inside anisotropic porous media. A variety of NMR methods (imaging, diffusion, spectroscopy) are being used to extract a deeper understanding of the interactions of water with porous substrates.
"Control of Microfluidic Flow in Amphiphilic Fabrics", ACS Applied Materials and Interfaces2011, submitted; T Owens, J Leisen, HW Beckham, V Breedveld.
"Validation of the Integrated Upward-Horizontal-Downward Wicking Test for Providing Intensive Properties of Textile Fabrics", J. Text. Inst.2011, submitted; T Owens, J Leisen, V Breedveld, HW Beckham.
"Permeability-Saturation-Capillary Pressure Relations in Textile Fabrics from an Integrated Upward-Horizontal-Downward Wicking Test", J. Text. Inst.2011, in press; C Simile, HW Beckham.
"Fluid Distribution and Movement in Engineered Fibrous Substrates by Magnetic Resonance Microscopy", In Magnetic Resonance Microscopy: Spatially Resolved NMR Techniques and Applications, S Codd, J Seymour, Eds.; Weinheim: Wiley-VCH, 2009, pp 399-419; J Leisen and HW Beckham.
"Magnetic Resonance Imaging Applications in Textile and Fiber Engineering: Fabrics and Diapers", AATCC Review2008, 8(5), 32-36; J Leisen, G Schauss, C Stanley, HW Beckham.
"Use of Magnetic Resonance Imaging to Visualize Impregnation across Aligned Cylinders Due to Capillary Forces", Exp. Fluids2007, 42(3), 425-440; V Neacsu, J Leisen, HW Beckham, SG Advani.
"Sorption Isotherm Measurements by NMR", Solid-State NMR2002,22(2-3), 409-422; J Leisen, HW Beckham, and M Benham.
"Through-Plane Diffusion of Moisture in Paper Detected by Magnetic Resonance Imaging", Industrial and Engineering Chem. Res.2002,41(25), 6555-6565; J Leisen, B Hojjatie, DW Coffin, SA Lavrykov, BV Ramarao, and HW Beckham.
"Quantitative Magnetic Resonance Imaging of Fluid Distribution and Movement in Textiles", Textile Research Journal 2001, 71(12), 1033-1045; J Leisen and HW Beckham.
"In-plane Moisture Transport in Paper Detected by Magnetic Resonance Imaging", Drying Technology 2001, 19(1), 201-208; with J Leisen, B Hojjatie, and DW Coffin.
"Through-Air Drying of Unbacked Tufted Carpet", Textile Research Journal 2001, 71(7), 613-620; HS Lee, WW Carr, J Leisen, and HW Beckham.
"A Model of Through-Air Drying of Tufted Textile Materials", International Journal of Heat and Mass Transfer2001, 78(2), 357-366; HS Lee, WW Carr, HW Beckham and J Leisen.
"Factors Influencing the Air Flow Through Unbacked Tufted Carpet", Textile Research Journal2000, 70(10), 876-885; HS Lee, HW Beckham, WW Carr, and WJ Wepfer.
"Magnetic Resonance Imaging of Water Ingress and Distribution in Fluorochemical-Finished Polyester Cut-Pile Carpet", Textile Chemist and Colorist1999, 31, 21-26; J Leisen, WW Carr, S Warner, J Good and HW Beckham.
"Observation of the Water Distribution during Drying of Textiles", In Spatially Resolved Magnetic Resonance, B Blümich, P Blümler, R Botto, and E Fukushima, Eds.; New York: Wiley-VCH, 1998, pp 265-272; J Leisen, L Hou, WW Carr and HW Beckham.
"Nuclear Magnetic Resonance Imaging of Water Distributions in Loop-Pile Nylon Carpet Tile", J. Textile Institute, Part 11998, 89(2); 436-440; HW Beckham, WW Carr, C Fülber, HW Spiess and B Blümich.
Synthesis of Inorganic and Organic Nanotubes, Fullerene-Based Nanocomposites, Nanoparticle Dispersion by NMR Relaxometry.
"Formation of Single-Walled Aluminosilicate Nanotubes from Molecular Precursors and Curved Nanoscale Intermediates", J. Am. Chem. Soc.2011, 133, 5397-5412; G Yucelen, R Choudhury, A Vyalikh, U Scheler, HW Beckham, S Nair.
"Clay Dispersion in Polymer Nanocomposites by Spin-Diffusion-Averaged Paramagnetic Enhanced NMR Relaxometry", Macromolecules2011, submitted; B Xu, J Leisen, HW Beckham.
"Evolution of Clay Morphology in Polypropylene/Montmorillonite Nanocomposites upon Equi-biaxial Stretching: A Solid-State NMR and TEM Approach", Macromolecules2009, 42(22), 8959-8968; B Xu, J Leisen, HW Beckham, R Abu-Zurayk, E Harkin-Jones, T McNally.
"C60 Fullerene Inclusions in Low-Molecular-Weight Polystyrene-Poly(dimethylsiloxane) Diblock Copolymers", Polymer2009, 50, 4199-4204; JH Waller, DG Bucknall, RA Register, HW Beckham, J Leisen, K Campbell.
"Chain Dynamics of Polyoxyethylene in Nanotubes of a-Cyclodextrin by Solid-State 2H NMR", Macromol. Chem. Phys.2005, 206, 998-1005; TE Girardeau, J Leisen and HW Beckham.
Energy Harvesting, Environmentally Friendly Dyeing and Surface Modification, Crosslinkable Materials for Gas-Separation Membranes.
"Evaluation of Hollow Piezoelectric Ceramic Fibers for Energy Harvesting", Journal of the Acoustical Society 2011, submitted; FM Guillot, HW Beckham, J Leisen.
"Reactive-Ionic Dyeing of Films and Fibers via Ionic Assembly and Covalent Fixation", AATCC Review 2009, 9(5), 43-47; CA Hubbell, HW Beckham, FL Cook.
"Influence of Crosslinking Technique on the Physical and Transport Properties of Ethynyl-Terminated Monomer/ Polyetherimide Asymmetric Membranes", J. Membr. Sci. 2001, 191(1-2), 1-11; CN Dudley, B Schoeberl, GK Sturgill, ME Rezac and HW Beckham.
"Crosslinked Diacetylene-Functionalized Polyimides for Gas Separation Membranes: Polymer Reactivity and Resultant Properties" ACS Symposium Series 733, B Freeman and I Pinnau, Eds.; 1999, pp 244-255; B Bayer, B Schoeberl, K Nagapudi, HW Beckham and ME Rezac.
"Synthesis and Properties of Processable Polyimides Containing Diacetylene Groups", Chem. Mater.1998, 10, 567-573; NT Karangu, ME Rezac and HW Beckham.
"Transport Properties of Crosslinkable Polyimide Blends", J. Membr. Sci.1997, 136, 249-259; ME Rezac, ET Sorenson and HW Beckham.
Correlation with Bulk Physical Properties.
"Self-Diffusion of Poly(p-phenyleneethynylene)s in Dilute Solution Determined by Pulsed-Field-Gradient NMR", Polymer,2005,46, 4839-4844; T Zhao, HW Beckham, HL Ricks and UHF Bunz.
"Evolution of Crystallinity, Chain Mobility and Crystallite Size during Polymer Crystallization", Macromolecules2004, 37(21), 8028-8034; J Leisen, HW Beckham, and MA Sharaf.
"Localized Chain Mobility and Gas Transport Properties of Thermoplastic Aromatic Polymers", J. Membr. Sci.2002,208, 257-267; S Singla, HW Beckham and ME Rezac.
"Structure and Temperature-Dependent Properties of Poly(4-methyl-1-pentene) Fibers", Macromolecules1997, 30, 3293; S Reddy, P Desai, AS Abhiraman, HW Beckham, AS Kulik, HW Spiess.
"Conformational Disorder and its Dynamics within the Crystalline Phase of the Form II Polymorph of Isotactic Poly(1-butene)", In Multidimensional NMR, FT-IR/Raman, and Fluorescence Spectroscopy of Polymers, M Urban and T Provder, Eds.; ACS Symposium Series, 1995, p 384; HW Beckham, K Schmidt-Rohr and HW Spiess.
"2D Exchange NMR Spectroscopy in Polymer Research", In NMR - Basic Principles and Progress 32, p 163; B Bluemich and R Kosfield, Eds.; Berlin: Springer, 1994; HW Beckham and HW Spiess.
"Molecular Nature of the Beta Relaxation in Poly(methyl methacrylate) Investigated by Multidimensional NMR",Macromolecules, 1994, 27, 4733; K Schmidt-Rohr, AS Kulik, HW Beckham, A Ohlemacher, U Pawelzik, C Boeffel, and HW Spiess.
"Phase-Restricted Radiation Crosslinking in Semicrystalline Polyolefins Investigated by Two-Dimensional Solid-State NMR",Die Makromolekulare Chemie1994, 195, 1471; HW Beckham and HW Spiess.
Prof. Beckham currently serves as chair of the Georgia Tech NMR Users Advisory committee, providing operational assistance for the Georgia Tech NMR Center. The facility contains NMR instrumentation for high-resolution liquids (500 MHz), wide-line solids (300 MHz), and NMR imaging (400 MHz). Other instrumentation and capabilities include FTIR, GPC, MALS, DLS, TD-NMR (23 MHz), moisture sorption gravimetry and capillary flow porometry.
"Dependence of thermal properties on the copolymer sequence in diacetylene-containing polycarboranylenesiloxanes", Chem. Mater.2004,16, 3162-3167; MK Kolel-Veetil, HW Beckham and TM Keller.
"Diacetylene-Terminated Diacetylene-Containing Polysiloxanes", J. Mater. Chem.2002,12(12), 3363-3365; HW Beckham and TM Keller.
"Solid-State Complexes of Hexafluoro-2-propanol with Benzophenone-Containing Polyimides", Macromolecules2001, 34(25), 8730-8734; GK Sturgill, C Stanley, ME Rezac and HW Beckham.
"Solution polymerization of an a,w-diethynyl diimide to a diacetylene-containing polyimide via oxidative coupling", Polymer 2001, 42(5), 2031-2037; NT Karangu, TE Girardeau, GK Sturgill, ME Rezac, and HW Beckham.
"Thermorheological Consequences of Crystalline-Phase Crosslinking in Polyamide Fibers", J. Appl. Polym. Sci.1997, 65, 2613; S Thadani, HW Beckham, P Desai, and AS Abhiraman.
"Mechanical Properties of Diacetylene-Functionalized Polyamides",Polymer1991, 32, 1821; HW Beckham and MF Rubner.
"A New Mechanism of Toughening Glassy Polymers. 1. Experimental Procedures",Macromolecules1990, 23, 3968; OS Gebizlioglu, HW Beckham, AS Argon, RE Cohen, and HR Brown.
beckham@gatech.edu
