John Texter

Last updated

John Texter
Born (1949-08-09) August 9, 1949 (age 74)
Alma mater Lehigh University
Scientific career
Fields Chemistry
Institutions Eastern Michigan University
National Science Foundation
Strider Research Corporation
Eastman Kodak Company
Doctoral advisor Kamil Klier

John Texter (born August 9, 1949, in Lancaster, Pennsylvania) is an American engineer, chemist, and educator. He is professor emeritus of polymer and coating technology at Eastern Michigan University (EMU) in Ypsilanti, Michigan, [1] and managing consultant of Strider Research Corporation (SRC). [2] He is best known for his work (see references below in Industrial and Academic career sections) in applied dispersion technology, small particle science, and stimuli-responsive polymers based on ionic liquids, for his international conference organization activities, including Particles 2001, [3] Particles 2002, etc., and the Gordon Research Conferences, Chemistry at Interfaces [4] and Chemistry of Supramolecules and Assemblies, [5] and for his editing of the Primers page for nanoparticles.org. [6]

Contents

Education

Texter received his secondary education at Penn Manor High School in Millersville, Pennsylvania, where he lettered in soccer and wrestling. He matriculated to Lehigh University, Bethlehem, Pennsylvania, in 1967 with the aid of a Lehigh Merit Scholarship [7] and graduated with a BSEE in 1971. He was mentored in his undergraduate years by John J. Karakash, who designed the Electrical Engineering curriculum at Lehigh to liberally educate through engineering. His proclivity for control theory (mentored by Donald Talheim), sparked an interest in physiology and then biochemistry, and he was further stimulated by the lectures of Forbes T. Brown in graduate mechanical engineering courses on time-dependent control theory and hybrid systems modeling with a focus on bond graph analysis. His undergraduate biochemistry studies led him to physical chemistry. He continued at Lehigh to obtain an MS in chemistry in 1973 (mentored by Daniel Zeroka, Jim Sturm, and Roland Lovejoy), an MS in mathematics in 1976 (mentored by Gilbert Stengel), and a PhD in chemistry in 1976. He was further mentored in graduate studies by Albert Zettlemoyer, [8] Fred Fowkes, [9] and Kamil Klier, [10] his thesis advisor. Texter spent a postdoctoral year in biophysical spectroscopy at the University of California, Irvine with John Clark Sutherland [11] in their physiology department, initiating Monte Carlo analyses and modeling of DNA photochemical processes, [12] [13] and a postdoctoral year with Eugene S. Stevens at Binghamton University, chemistry department, developing a time-dependent Hartree–Fock model for circular dichroism in saccharides and a Monte Carlo-based nonlinear optimization (solver) algorithm defined on compact sets with arbitrary constraints.

Service to the public and the profession

Texter served as chairman of the division of colloid and surface chemistry [14] of the American Chemical Society in 1998 and in a variety of line officer and executive committee positions before and since (1991–2002), and returned to serve as program chair (2008–2010). He has organized many regional, national, and international conferences, including organizing ACS NERM (American Chemical Society northeast regional meeting) symposia in Rochester, NY, chairing the Gordon Research Conferences: Chemistry at Interfaces (Interfacial Structure) [15] in Meriden, New Hampshire, in 1996 and Chemistry of Supramolecules and Assemblies (Functional Materials through Bottom-Up Self-Assembly) [15] in Barga, Tuscany, in 2007. He has also organized and served as General Chair for the Particles Conferences Particles 2001, Particles 2002, through Particles 2013 in Dayton. He is a member of the American Chemical Society, the American Institute of Chemical Engineers, the American Physical Society, the Materials Research Society, the Institute of Electrical and Electronics Engineers, and the Society for Imaging Science and Technology.

Industrial career

Texter has over 40 years of experience in industrial small particle and coating technologies. He worked in the Eastman Kodak Research Laboratories from 1978 to 1998 and he was managing consultant for Strider Research Corporation from 1998 to the present. From the spring of 2001, he served for a year as a rotator in the National Science Foundation Chemistry Division as Program Director of Experimental Physical Chemistry. Through Strider Research Corporation (SRC) he consults in nanotechnology, advanced polymeric composites and materials, and IP (intellectual property) management. He also offers SRC short courses and workshops in small particle technology, surface modification chemistry and processing, cross-linking technologies, and patenting.

While at Eastman Kodak Company and at Eastern Michigan University he was a prolific inventor and co-inventor in the field of dispersion technology, and he was awarded 47 issued US Patents and numerous EU and PTO patents.

Academic career

Texter joined the College of Engineering and Technology of Eastern Michigan University in the fall of 2002 as a professor of polymer and coating technology at the rank of full professor. In 2005 he was awarded tenure. Since joining EMU, he has also been a Coatings Research Institute [16] faculty member. He spent a sabbatical year near Berlin as a Fellow of the Max Planck Society with Professor Markus Antionetti at the Max Planck Institute of Colloids and Interfaces.

His research has focused on small particle science and technology, the development of particle-based advanced materials, and polymeric advanced materials. His work has focused on applied problems in dispersion and materials technology for advanced coatings in imaging, antifouling, corrosion mitigation, and antimicrobial prophylaxis. He has made significant contributions to the understanding of microemulsion structure and the complex equilibria that exist among the exotic molecular complexes contained in microemulsions, as well as in microemulsion polymerization.[ citation needed ]

In more recent years, he has become a leading innovator in the fields of stimuli-responsive polymers (smart polymers) and polymerized ionic liquids.[ citation needed ]

In August 2021, he resigned his tenure and was named professor emeritus by the EMU Board of Regents on 9 December 2021.[ citation needed ]

Highlights of Research Accomplishments:

2014–present Advanced understanding and experimental application of liquid-phase exfoliation of 2D materials (graphene, black phosphorus, MoS2, ...) – Derived analytical kinetic model for 2D exfoliation in dispersion – Showed graphene dispersions to be rheo-optical fluids that reversible undergo isotropic to nematic transitions under shear

2006–present Third international lab (after Ohno in Japan and Mecerreyes in Spain) to help initiate polymerized ionic liquids (PIL) research with introduction of reversibly-porating gels based on pinned spinodal decomposition and nanolatex syntheses by microemulsion polymerization – Demonstrated such materials provide osmotic brush stabilization when used in dispersions as dispersing aids – Showed that such PIL materials, particularly nanolatexes, exhibit a dynamic range greater than 104-fold in stability based on anion exchange or solvent exchange – Illustrated that these stability phenomena are basis of stimuli responsive behaviors including polymer-poration, swelling, phase transfer in addition to dispersion stability – Showed how nanocarbons, such as SWCNT, MWCNT, and graphene, can be dispersed in water at concentrations of 1-17% by weight, eclipsing leading international labs by 100-fold – Applied ATRP controlled polymerization to make new class of triblock copolymers with PIL blocks that form thermoreversible gels – Developed diblock copolymers, poly(PNIPAM-b-PIL), that reversibly precipitate as ultrastable (in boiling water) nanoparticles when heated

2004–present Extended invention of solvent-free nanofluids, nanoparticles that form moderate to high viscosity liquids at room temperature in absence of any added solvent, by Giannelis, [17] Archer, [18] Wiesner [19] groups at Cornell to create reactive solvent-free nanofluids to create new resins and materials and exotic cross-linking agents in photoinitiated UV (free radical), polyurethane, and polyurea (air curing) systems – Demonstrated applications in producing UV-protective overcoats, new adhesives and sealants, and lubricants – Showed that such liquid colloids can be used to mitigate brittleness and increase toughness induced by nanofillers in nanocomposites – Developed core-free solvent-free nanofluids derived from organo-trialkoxysilanes that, because of high polydispersity, provided first experimental examples of coexistence of multiple phase domains due to polydispersity – Showed that such glass transition and melting in such core-free nanofluids are lambda transitions and second-order (continuous) phase transitions – Presented reactive nanofluids as additive manufacturing inks (featured in C&E News)

1992-2013 Formulated first anionically stabilized microemulsion polymerization system without using cosurfactants, foundational to field of microemulsion polymerization – Advanced understanding of microemulsions and microemulsion polymerization by experimentally deriving an order parameter-based proof that swollen-micelle to bicontinuous to swollen-reverse-micelle transitions are continuous (second order) phase transitions – Demonstrated how to capture bicontinuous microemulsion structure by using neutron scattering to characterize microemulsion and resulting polymeric gel

1990-2008 Contributed to development of electroacoustic sonic amplitude (ESA) as practical method of characterizing electrokinetics in concentrated dispersions by developing calibration methods to translate measurements to electrophoretic mobilities – Showed that time-dependent dielectric reflectance spectroscopy (TDS) could derive electrophoretic mobilities of particulates in presence of indifferent electrolyte – Applied TDS to characterize microemulsion second-order phase transitions and percolation in microemulsions – Showed that dielectric spectroscopy could quantify electronic and ionic conductivities in coatings of colloids and gels

1977-1986 Demonstrated creation of zeolite supported colloidal copper and silver clusters by thermal and chemical reduction chemistries – Documented electronic Jahn-Teller splitting of UV silver ion multiplet spectra in zeolites – First experimental demonstration of electronic-spectral Dewar-Chatt effect (Dewar–Chatt–Duncanson model) in charged silver clusters using reversible ethylene and butylene adsorption-desorption

Personal life

Texter and his estranged wife Melanie Martin were married on June 20, 1984. They have a son Kurt Martin Texter, [20] and a daughter Grace Martin Texter. [21] Kurt works as a graphic designer and grocery worker in San Francisco, and Grace works as a graphic designer and artist in Manhattan. Texter was previously married to Rose Marie Joan Piotrowski on June 6, 1970; they divorced in 1980. Texter is studying Latin and swing social dancing and pursues weekly hiking with various groups.

Related Research Articles

<span class="mw-page-title-main">Colloid</span> Mixture of an insoluble substance microscopically dispersed throughout another substance

A colloid is a mixture in which one substance consisting of microscopically dispersed insoluble particles is suspended throughout another substance. Some definitions specify that the particles must be dispersed in a liquid, while others extend the definition to include substances like aerosols and gels. The term colloidal suspension refers unambiguously to the overall mixture. A colloid has a dispersed phase and a continuous phase. The dispersed phase particles have a diameter of approximately 1 nanometre to 1 micrometre.

<span class="mw-page-title-main">Gel</span> Highly viscous liquid exhibiting a kind of semi-solid behavior

A gel is a semi-solid that can have properties ranging from soft and weak to hard and tough. Gels are defined as a substantially dilute cross-linked system, which exhibits no flow when in the steady state, although the liquid phase may still diffuse through this system.

<span class="mw-page-title-main">Suspension (chemistry)</span> Heterogeneous mixture of solid particles dispersed in a medium

In chemistry, a suspension is a heterogeneous mixture of a fluid that contains solid particles sufficiently large for sedimentation. The particles may be visible to the naked eye, usually must be larger than one micrometer, and will eventually settle, although the mixture is only classified as a suspension when and while the particles have not settled out.

<span class="mw-page-title-main">Nanoparticle</span> Particle with size less than 100 nm

A nanoparticle or ultrafine particle is a particle of matter 1 to 100 nanometres (nm) in diameter. The term is sometimes used for larger particles, up to 500 nm, or fibers and tubes that are less than 100 nm in only two directions. At the lowest range, metal particles smaller than 1 nm are usually called atom clusters instead.

In materials science, the sol–gel process is a method for producing solid materials from small molecules. The method is used for the fabrication of metal oxides, especially the oxides of silicon (Si) and titanium (Ti). The process involves conversion of monomers in solution into a colloidal solution (sol) that acts as the precursor for an integrated network of either discrete particles or network polymers. Typical precursors are metal alkoxides. Sol–gel process is used to produce ceramic nanoparticles.

<span class="mw-page-title-main">Dip-coating</span> Industrial coating process

Dip coating is an industrial coating process which is used, for example, to manufacture bulk products such as coated fabrics and condoms and specialised coatings for example in the biomedical field. Dip coating is also commonly used in academic research, where many chemical and nano material engineering research projects use the dip coating technique to create thin-film coatings.

<span class="mw-page-title-main">Nanofabrics</span> Textiles engineered with small particles that give ordinary materials advantageous properties

Nanofabrics are textiles engineered with small particles that give ordinary materials advantageous properties such as superhydrophobicity, odor and moisture elimination, increased elasticity and strength, and bacterial resistance. Depending on the desired property, a nanofabric is either constructed from nanoscopic fibers called nanofibers, or is formed by applying a solution containing nanoparticles to a regular fabric. Nanofabrics research is an interdisciplinary effort involving bioengineering, molecular chemistry, physics, electrical engineering, computer science, and systems engineering. Applications of nanofabrics have the potential to revolutionize textile manufacturing and areas of medicine such as drug delivery and tissue engineering.

Layer-by-layer (LbL) deposition is a thin film fabrication technique. The films are formed by depositing alternating layers of oppositely charged materials with wash steps in between. This can be accomplished by using various techniques such as immersion, spin, spray, electromagnetism, or fluidics.

Hydrophobic silica is a form of silicon dioxide that has hydrophobic groups chemically bonded to the surface. The hydrophobic groups are normally alkyl or polydimethylsiloxane chains. Hydrophobic silica can be processed in different ways; such as fumed silica, precipitated silica, and aerosol assisted self assembly, all existing in the form of nanoparticles.

Adsorption of polyelectrolytes on solid substrates is a surface phenomenon where long-chained polymer molecules with charged groups bind to a surface that is charged in the opposite polarity. On the molecular level, the polymers do not actually bond to the surface, but tend to "stick" to the surface via intermolecular forces and the charges created by the dissociation of various side groups of the polymer. Because the polymer molecules are so long, they have a large amount of surface area with which to contact the surface and thus do not desorb as small molecules are likely to do. This means that adsorbed layers of polyelectrolytes form a very durable coating. Due to this important characteristic of polyelectrolyte layers they are used extensively in industry as flocculants, for solubilization, as supersorbers, antistatic agents, as oil recovery aids, as gelling aids in nutrition, additives in concrete, or for blood compatibility enhancement to name a few.

The Stöber process is a chemical process used to prepare silica particles of controllable and uniform size for applications in materials science. It was pioneering when it was reported by Werner Stöber and his team in 1968, and remains today the most widely used wet chemistry synthetic approach to silica nanoparticles. It is an example of a sol-gel process wherein a molecular precursor is first reacted with water in an alcoholic solution, the resulting molecules then joining together to build larger structures. The reaction produces silica particles with diameters ranging from 50 to 2000 nm, depending on conditions. The process has been actively researched since its discovery, including efforts to understand its kinetics and mechanism – a particle aggregation model was found to be a better fit for the experimental data than the initially hypothesized LaMer model. The newly acquired understanding has enabled researchers to exert a high degree of control over particle size and distribution and to fine-tune the physical properties of the resulting material in order to suit intended applications.

<span class="mw-page-title-main">Self-assembly of nanoparticles</span> Physical phenomenon

Nanoparticles are classified as having at least one of its dimensions in the range of 1-100 nanometers (nm). The small size of nanoparticles allows them to have unique characteristics which may not be possible on the macro-scale. Self-assembly is the spontaneous organization of smaller subunits to form larger, well-organized patterns. For nanoparticles, this spontaneous assembly is a consequence of interactions between the particles aimed at achieving a thermodynamic equilibrium and reducing the system’s free energy. The thermodynamics definition of self-assembly was introduced by Professor Nicholas A. Kotov. He describes self-assembly as a process where components of the system acquire non-random spatial distribution with respect to each other and the boundaries of the system. This definition allows one to account for mass and energy fluxes taking place in the self-assembly processes.

Green textiles are fabrics or fibres produced to replace environmentally harmful textiles and minimise the ecological impact. Green textiles are part of the sustainable fashion and eco-friendly trends, providing alternatives to the otherwise pollution-heavy products of conventional textile industry, which is deemed the most ecologically damaging industry.

Dispersion Technology Inc is a scientific instrument manufacturer located in Bedford Hills, New York. It was founded in 1996 by Philip Goetz and Dr. Andrei Dukhin. The company develops and sells analytical instruments intended for characterizing concentrated dispersions and emulsions, complying with the International Standards for acoustic particle sizing ISO 20998 and electroacoustic zeta potential measurement ISO 13099.

Timothy P. Lodge is an American polymer scientist.

<span class="mw-page-title-main">Steven Armes</span> Professor of Polymer Chemistry and Colloid Chemistry at the University of Sheffield

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Polyurethane dispersion, or PUD, is understood to be a polyurethane polymer resin dispersed in water, rather than a solvent, although some cosolvent maybe used. Its manufacture involves the synthesis of polyurethanes having carboxylic acid functionality or nonionic hydrophiles like PEG incorporated into, or pendant from, the polymer backbone. Two component polyurethane dispersions are also available.

<span class="mw-page-title-main">Nanoparticle interfacial layer</span> Interfacial layer of nanoparticles

A nanoparticle interfacial layer is a well structured layer of typically organic molecules around a nanoparticle. These molecules are known as stabilizers, capping and surface ligands or passivating agents. The interfacial layer has a significant effect on the properties of the nanoparticle and is therefore often considered as an integral part of a nanoparticle. The interfacial layer has an typical thickness between 0.1 and 4 nm, which is dependent on the type of the molecules the layer is made of. The organic molecules that make up the interfacial layer are often amphiphilic molecules, meaning that they have a polar head group combined with a non-polar tail.

Vitaliy Khutoryanskiy FRSC is a British and Kazakhstani scientist, a Professor of Formulation Science and a Royal Society Industry Fellow at the University of Reading. His research focuses on polymers, biomaterials, nanomaterials, drug delivery, and pharmaceutical sciences. Khutoryanskiy has published over 200 original research articles, book chapters, and reviews. His publications have attracted > 11000 citations and his current h-index is 52. He received several prestigious awards in recognition for his research in polymers, colloids and drug delivery as well as for contributions to research peer-review and mentoring of early career researchers. He holds several honorary professorship titles from different universities.

References

  1. "Dr. John Texter--- College of Technology". Archived from the original on May 29, 2010. Retrieved December 30, 2008.
  2. "Nano Particles". nanoparticles.org. Retrieved March 28, 2024.
  3. "Partilces 2001".
  4. "Find a Conference".
  5. "Find a Conference".
  6. "Archived copy". Archived from the original on August 29, 2010. Retrieved December 31, 2008.{{cite web}}: CS1 maint: archived copy as title (link)
  7. "National Merit® Scholarship Program".
  8. Miner, Dolores (1991). "Former ACS president Albert Zettlemoyer dies". Chemical & Engineering News Archive. 69 (5): 5–6. doi:10.1021/cen-v069n005.p005a.
  9. "Frederick M. Fowkes, 75, Ex-Head of Lehigh U. Chemistry Department". October 20, 1990.
  10. "Kamil Klier's Home Page".
  11. "Home | Betsy Middleton and John Clark Sutherland Dean's Chair". sutherlandchair.cos.gatech.edu. Retrieved March 28, 2024.
  12. Texter, J. (1990). "Saturation photodimerization of thymines in DNA". Biopolymers. 30 (7–8): 797–802. doi:10.1002/bip.360300714. PMID   2275979. S2CID   23450486.
  13. Texter, J. (1992). "Quantum yield for preferential photodimerization in long pyrimidine tracts". Biopolymers. 32 (1): 53–59. doi:10.1002/bip.360320108. PMID   1617150. S2CID   41531178.
  14. "ACS | Chemistry for Life - Colloid and Surface Chemistry". ACS | Chemistry for Life. Retrieved March 28, 2024.
  15. 1 2 "2007 Chemistry of Supramolecules and Assemblies Conference GRC".
  16. "Coatings Research Institute".
  17. "Emmanuel P. Giannelis". August 3, 2015.
  18. "Lynden A. Archer | Cornell Engineering".
  19. "Uli B. Wiesner | Materials Science and Engineering".
  20. "Kurt Texter (texterdesign) - Profile". Pinterest. Retrieved March 28, 2024.
  21. "Grace Texter". Grace Texter. Retrieved March 28, 2024.