Richard Kotek

Abbasi, M., Mojtahedi, M. R. M., & Kotek, R. (2020). Experimental study on texturability of filament yarns produced from recycled PET. TEXTILE RESEARCH JOURNAL. https://doi.org/10.1177/0040517520925859

Abbasi, M., & Kotek, R. (2019). Effects of drawing process on crimp formation-ability of side-by-side bicomponent filament yarns produced from recycled, fiber-grade and bottle-grade PET. JOURNAL OF THE TEXTILE INSTITUTE. https://doi.org/10.1080/00405000.2019.1611523

Najafi, M., & Kotek, R. (2019). Mechanical properties of PTT fibers by sustainable horizontal isothermal bath process. SN APPLIED SCIENCES, 1(10). https://doi.org/10.1007/s42452-019-1198-5

Naeimirad, M., Zadhoush, A., Neisiany, R. E., Salimian, S., & Kotek, R. (2019). Melt-spun PLA liquid-filled fibers: physical, morphological, and thermal properties. JOURNAL OF THE TEXTILE INSTITUTE, 110(1), 89–99. https://doi.org/10.1080/00405000.2018.1465336

Yu, Y., Boy, R., & Kotek, R. (2019). Novel Membranes Regenerated from Blends of Cellulose/Gluten Using Ethylenediamine/Potassium Thiocyanate Solvent System. JOURNAL OF RENEWABLE MATERIALS, 7(1), 41–55. https://doi.org/10.32604/jrm.2019.00105

Douglass, E. F., Avci, H., Boy, R., Rojas, O. J., & Kotek, R. (2018). A Review of Cellulose and Cellulose Blends for Preparation of Bio-derived and Conventional Membranes, Nanostructured Thin Films, and Composites. Polymer Reviews, 58(1), 102–163. https://doi.org/10.1080/15583724.2016.1269124

Salimian, S., Zadhoush, A., Naeimirad, M., Kotek, R., & Ramakrishna, S. (2018). A review on aerogel: 3D nanoporous structured fillers in polymer-based nanocomposites. POLYMER COMPOSITES, 39(10), 3383–3408. https://doi.org/10.1002/pc.24412

Naeimirad, M., Zadhoush, A., Kotek, R., Neisiany, R. E., Khorasani, S. N., & Ramakrishna, S. (2018). [Review of Recent advances in core/shell bicomponent fibers and nanofibers: A review]. Journal of Applied Polymer Science, 135(21). https://doi.org/10.1002/app.46265

Yoon, J. H., Avci, H., Najafi, M., Nasri, L., Hudson, S. M., & Kotek, R. (2017). Development of high-tenacity, high-modulus poly(ethylene terephthalate) filaments via a next generation wet-melt-spinning process. Polymer Engineering and Science, 57(2), 224–230. https://doi.org/10.1002/pen.24406

Kotek, R., Afshari, M., Avci, H., & Najafi, M. (2017). Production of polyolefins. Polyolefin Fibres: Structure, Properties and Industrial Applications, 2nd Edition, 189–264. https://doi.org/10.1016/b978-0-08-101132-4.00007-2

Boy, R., Narayanan, G., Chung, C. C., & Kotek, R. (2016). Novel cellulose-collagen blend biofibers prepared from an amine/salt solvent system. International Journal of Biological Macromolecules, 92, 1197–1204. https://doi.org/10.1016/j.ijbiomac.2016.08.010

Boy, R., Bourham, M., & Kotek, R. (2016). Properties of cellulose-soy protein blend biofibers regenerated from an amine/salt solvent system. Cellulose, 23(6), 3747–3759. https://doi.org/10.1007/s10570-016-1072-1

Boy, R., Maness, C., & Kotek, R. (2016). Properties of chitosan/soy protein blended films with added plasticizing agent as a function of solvent type at acidic pH. International Journal of Polymeric Materials and Polymeric Biomaterials, 65(1), 11–17. https://doi.org/10.1080/00914037.2015.1038821

Avci, H., Kotek, R., & Toliver, B. (2015). Controlling of threadline dynamics via a novel method to develop ultra-high performance polypropylene filaments. Polymer Engineering and Science, 55(2), 327–339. https://doi.org/10.1002/pen.23908

Najafi, M., Avci, H., & Kotek, R. (2015). High-performance filaments by melt spinning low viscosity nylon 6 using horizontal isothermal bath process. Polymer Engineering and Science, 55(11), 2457–2464. https://doi.org/10.1002/pen.24135

Avci, H., Najafi, M., Kilic, A., & Kotek, R. (2015). Highly crystalline and oriented high-strength poly(ethylene terephthalate) fibers by using low molecular weight polymer. Journal of Applied Polymer Science, 132(45). https://doi.org/10.1002/app.42747

Keene, B., Bourham, M., Viswanath, V., Avci, H., & Kotek, R. (2014). Characterization of degradation of polypropylene nonwovens irradiated by gamma-ray. Journal of Applied Polymer Science, 131(4). https://doi.org/10.1002/app.39917

Zhu, Y., Douglass, E., Theyson, T., Hogan, R., & Kotek, R. (2013). Cellulose and Soy Proteins Based Membrane Networks. Macromolecular Symposia, 329(1), 70–86. https://doi.org/10.1002/MASY.201300032

Avci, H., Kotek, R., & Yoon, J. (2013). Developing an ecologically friendly isothermal bath to obtain a new class high-tenacity and high-modulus polypropylene fibers. Journal of Materials Science, 48(22), 7791–7804. https://doi.org/10.1007/s10853-013-7427-1

Avci, H., Monticello, R., & Kotek, R. (2013). Preparation of antibacterial PVA and PEO nanofibers containing Lawsonia Inermis (henna) leaf extracts. Journal of Biomaterials Science, Polymer Edition, 24(16), 1815–1830. https://doi.org/10.1080/09205063.2013.804758

Roe, B., Kotek, R., & Zhang, X. W. (2012). Durable hydrophobic cotton surfaces prepared using silica nanoparticles and multifunctional silanes. Journal of the Textile Institute, 103(4), 385–393. https://doi.org/10.1080/00405000.2011.580540

Porter, K., Koch, P., Kotek, R., Hays, M., & Contento, I. (2012). Evaluation of the Food Day School Curriculum to Teach Children Why and How to EAT REAL. Journal of Nutrition Education and Behavior, 44(4), S71. https://doi.org/10.1016/j.jneb.2012.03.166

Nazi, M., Malek, R. M. A., & Kotek, R. (2012). Modification of beta-cyclodextrin with itaconic acid and application of the new derivative to cotton fabrics. Carbohydrate Polymers, 88(3), 950–958. https://doi.org/10.1016/j.carbpol.2012.01.047

Afshari, M., Chen, P., & Kotek, R. (2012). Relationship between tensile properties and ballistic performance of poly(ethylene naphthalate) woven and nonwoven fabrics. Journal of Applied Polymer Science, 125(3), 2271–2280. https://doi.org/10.1002/app.36442

Scott, J. B., Afshari, M., Kotek, R., & Saul, J. M. (2011). The promotion of axon extension in vitro using polymer-templated fibrin scaffolds. Biomaterials, 32(21), 4830–4839. https://doi.org/10.1016/j.biomaterials.2011.03.037

Jun, D., Kotek, R., Tonelli, A. E., & Vasanthan, N. (2010). High modulus polyamide fibers.

Vinci, J. C., Bilski, P., Kotek, R., & Chignell, C. (2010). controlling the formation of silver nanoparticles on silica by photochemical deposition and other means. Photochemistry and Photobiology, 86(4), 806–812. https://doi.org/10.1111/j.1751-1097.2010.00717.x

Mohan, A., Joyner, X., Kotek, R., & Tonelli, A. E. (2009). Constrained/Directed Crystallization of Nylon-6. I. Nonstoichiometric Inclusion Compounds Formed with Cyclodextrins. Macromolecules, 42(22), 8983–8991. https://doi.org/10.1021/ma901599c

Chen, P., Afshari, M., Cuculo, J. A., & Kotek, R. (2009). Direct formation and characterization of a unique precursor morphology in the melt-spinning of polyesters. Macromolecules, 42(15), 5437–5441. https://doi.org/10.1021/ma900669r

Jung, H. R., Ju, D. H., Lee, W. J., Zhang, X. W., & Kotek, R. (2009). Electrospun hydrophilic fumed silica/polyacrylonitrile nanofiber-based composite electrolyte membranes. Electrochimica Acta, 54(13), 3630–3637. https://doi.org/10.1016/j.electacta.2009.01.039

Gupta, A., Saquing, C. D., Afshari, M., Tonelli, A. E., Khan, S. A., & Kotek, R. (2009). Porous Nylon-6 fibers via a novel salt-Induced electrospinning method. Macromolecules, 42(3), 709–715. https://doi.org/10.1021/ma801918c

Chen, P., & Kotek, R. (2008). [Review of Advances in the production of poly(ethylene naphthalate) fibers]. Polymer Reviews, 48(2), 392–421. https://doi.org/10.1080/15583720802022331

Eberl, A., Heumann, S., Kotek, R., Kaufmann, F., Mitsche, S., Cavaco-Paulo, A., & Gubitz, G. M. (2008). Enzymatic hydrolysis of PTT polymers and oligomers. Journal of Biotechnology, 135(1), 45–51. https://doi.org/10.1016/j.jbiotec.2008.02.015

Ojha, S. S., Afshari, M., Kotek, R., & Gorga, R. E. (2008). Morphology of electrospun nylon-6 nanofibers as a function of molecular weight and processing parameters. Journal of Applied Polymer Science, 108(1), 308–319. https://doi.org/10.1002/app.27655

Ahmadi, Z., Kish, M. H., Freeman, H., Kotek, R., & Katbab, A. A. (2008). Photostability of isotactic polypropylene containing monoazo pigment. Journal of Applied Polymer Science, 108(5), 2950–2957. https://doi.org/10.1002/app.27951

Afshari, M., Gupta, A., Wook, D. J., Kotek, R., Tonelli, A., & Vasanthan, N. (2008). Properties of Lewis acid-base complex of nylon 6,6: Route to high performance fibers. Polymer, 49, 1297–1304.

Afshari, M., Gupta, A., Jung, D., Kotek, R., Tonelli, A. E., & Vasanthan, N. (2008). Properties of films and fibers obtained from Lewis acid-base complexed nylon 6,6. Polymer, 49(5), 1297–1304. https://doi.org/10.1016/j.polymer.2008.01.038

Kotek, R. (2008). [Review of Recent advances in polymer fibers]. Polymer Reviews, 48(2), 221–229. https://doi.org/10.1080/15583720802020038

Tonelli, A. E., Ashrafi, M., Gupta, A., & Kotek, R. (2007). A novel method for producing porous Nylon 6 nanofibers. Polymer.

Ahmadi, Z., Kish, M. H., Freeman, H., Kotek, R., & Katbab, A. A. (2007). Photo-stability of pigmented isotactic polypropylene. Journal of Applied Polymer Science, 104.

Afshari, M., Kotek, R., Jung, D., & Tonelli, A. (2007). Producing fibers by electrospinning. In P.J. Brown & K. Stevens (Eds.), Nanofibers and nanotechnology in textiles. Cambridge: Woodhead Publishing, in association with The Textile Institute.

Afshari, M., Wook, D. J., Kotek, R., & Tonelli, A. (2007). Producing polyamide nanofibers by electrospinning. In P.J. Brown & K. Stevens (Eds.), Nanofibers and nanotechnology in textiles (pp. 71–87). https://doi.org/10.1201/9781439823965.ch4

Kotek, R. (2007). Regenerated cellulose fibers. In Handbook of fiber chemistry (3rd. Ed.). https://doi.org/10.1201/9781420015270.ch10

Lee, H. J., Onori, J., Afshari, M., Cuculo, J., & Kotek, R. (2007). Spinning of semi-rigid polymers. In I. Krucin?ska & J. Zaja?czkowski (Eds.), Proceedings of IX international scientific conference: IMTEX 2007, Lo?dz?-Poland, October 8-9, 2007. Lo?dz? : Katedra Architektury Tekstylio?w Politechniki Lo?dzkiej.

Pang, K., Schmidt, B., Kotek, R., & Tonelli, A. (2006). Reorganization of the chain packing between poly(ethylene isophthalate) chains via coalescence from their inclusion compound formed with gamma-cyclodextrin. Journal of Applied Polymer Science, 102(6), 6049–6053. https://doi.org/10.1002/app.25217

Pang, K., Kotek, R., & Tonelli, A. (2006). [Review of Review of conventional and novel polymerization processes for polyesters]. Progress in Polymer Science, 31(11), 1009–1037. https://doi.org/10.1016/j.progpolymsci.2006.08.008

Pang, K., Kotek, R., & Tonelli, A. (2006). Ring-opening polymerization of the cyclic dimer of poly(trimethylene terephthalate). Journal of Polymer Science. Part A, Polymer Chemistry, 44(23), 6801–6809. https://doi.org/10.1002/pola.21760

Pang, K., Kotek, R., & Tonelli, A. E. (2005). Conventional and novel polymerizations and physical properties of polyesters. In G.E. Zaikov & Y. B. Monakov (Eds.), Focus on polymer research. New York: Nova Science Publishers.

Afshari, M., Kotek, R., Gupta, B. S., Kish, M. H., & Dast, H. N. (2005). Mechanical and structural properties of melt spun polypropylene / nylon 6 alloy filaments. Journal of Applied Polymer Science, 97, 532–544. https://doi.org/10.1002/app.21772

Kotek, R., Jung, D., Tonelli, A. E., & Vasanthan, N. (2005). Novel methods for obtaining high modulus aliphatic polyamide fibers. Journal of Macromolecular Science. Polymer Reviews., C45(3), 201–230. https://doi.org/10.1081/MC-200067716

Jung, D. W., Kotek, R., Vasanthan, N., & Tonelli, A. E. (2004). High modulus nylon 6,6 fibers through lewis acid-base complexation to control hydrogen bonding to enhance drawing behavior. Polymeric Materials: Science and Engineering, 91, 354.

Kotek, R., Jung, D. W., & Tonelli, A. E. (2004). High modulus nylon 66 fibers. Magic world of textiles: book of proceedings, International Textile Clothing & Design Conference, October 3rd to October 6th, 2004, Dubrovnik, Croatia. Zagreb: Faculty of Textile Technology, University of Zagreb.

Grancaric, A. M., Kovacevic, V., Leskovac, M., Tarbuk, A., Kotek, R., & Jung, D. W. (2004). Interface phenomena of hydrolyzed polyester fabric. Magic world of textiles: book of proceedings, International Textile Clothing & Design Conference, October 3rd to October 6th, 2004, Dubrovnik, Croatia. Zagreb: Faculty of Textile Technology, University of Zagreb.

Vasanthan, N., Kotek, R., Jung, D. W., Shin, D., Salem, D. R., & Tonelli, A. E. (2004). Lewis acid-base complexation of polyamide 66 as a means to control hydrogen bonding to form high strength fibers and films. Papers presented at the Anaheim, California meeting : 227th ACS national meeting, Anaheim, CA, March 28 - April 1, 2004, 45(1), 787. Blacksburg, Va.: ACS, Div. of Polymer Chemistry.

Vasanthan, N., Kotek, R., Jung, D. W., Shin, D., Tonelli, A. E., & Salem, D. R. (2004). Lewis acid-base complexation of polyamide 66 to control hydrogen bonding, extensibility and crystallinity. Polymer, 45(12), 4077–4085. https://doi.org/10.1016/j.polmer.2004.03.074

Vasanthan, N., Kotek, R., Jung, D.-W., Shin, D., Tonelli, A. E., & Salem, D. R. (2004). Lewis acid–base complexation of polyamide 66 to control hydrogen bonding, extensibility and crystallinity. Polymer, 45(12), 4077–4085. https://doi.org/10.1016/j.polymer.2004.03.074

El Ola, S. M. A., Kotek, R., King, M., Kim, J. H., Monticello, R., & Reeve, J. A. (2004). Studies on poly(trimethylene terephthalate) filaments containing silver. Journal of Biomaterials Science, Polymer Edition, 15(12), 1545–1559. https://doi.org/10.1163/1568562042459724

Kotek, R., Jung, D. W., Kim, J. H., Smith, B., Guzman, P., & Schmidt, B. (2004). Surface hydrolysis of filaments based on poly(trimethylene terephthalate) spun at high spinning speeds. Journal of Applied Polymer Science, 92(3), 1724–1730. https://doi.org/10.1002/app.20132

Kotek, R., Pang, K., Schmidt, B., & Tonelli, A. (2004). Synthesis and gas barrier characterization of poly(ethylene isophthalate). Journal of Polymer Science. Part B, Polymer Physics, 42(23), 4247–4254. https://doi.org/10.1002/polb.20284

El Ola, S. M. A., Kotek, R., White, W. C., Reeve, J. A., Hauser, P., & Kim, J. H. (2004). Unusual polymerization of 3-(trimethoxysilyl)-propyldimethyloctadecyl ammonium chloride on PET substrates. Polymer, 45(10), 3215–3225. https://doi.org/10.1016/j.polymer.2004.02.041

Kotek, R., Jung, D. W., Kim, J. H., Smith, B., Guzman, P., & Schmidt, B. (2003). Surface hydrolysis of filaments based on poly(trimethylene terephthalate). 3rd AUTEX Conference: 25-27 June 2003, Gdan?sk-Poland: World Textile Conference. Lo?dz?

Kim, J. H., Lee, J. J., Yoon, J. Y., & Kotek, R. (2001). Alkaline depolymerization of poly (trimethylene terephthalate). Journal of Applied Polymer Science, 82, 99. https://doi.org/10.1002/app.1828.abs

Afshari, M. K., R., K., M. H., N. dast, H., & Gupta, B. S. (2001). Effect of blend ratio on bulk properties and matrix-fibril morphology of polypropylene/nylon 6 polyblend fibers. Polymer, 43(4), 1331–1343. https://doi.org/10.1016/S0032-3861(01)00689-9

Kotek, R., Jung, D. W., Smith, B., & Kim, J. H. (2001). Effect of high speed spinning on physical properties and dyeing kinetics of PTT filaments. Chemical Fibers International, 51, 204.

Kotek, R., Abo El Ola, S. M., White, W. C., & Hauser, P. (2001). Polymerization of silane quaternary ammonium salts on fibers. Papers presented at the San Diego, California, meeting., 42(1), 106. Newark, NJ: Division of Polymer Chemistry, American Chemical Society.

Kotek, R., Li., W., Shore, G. W., & Yeh, L. (2000). Process of making hollow filaments. Washington, DC: U.S. Patent and Trademark Office.

Corbin, T. F., Handerman, A. C., Kotek, R., Porter, W. D., Dellinger, J. A., & Davis, E. A. (1999). Reclaiming epsilon-caprolactam from nylon 6 carpet. Washington, DC: U.S. Patent and Trademark Office.

Kotek, R., & Matthies, H. G. (1997). Fiber-forming modified polyamide blends. Washington, DC: U.S. Patent and Trademark Office.

Kotek, R., & Matthies, H. G. (1997). Process for melt-spinning fibers from modified polyamide blends. Washington, DC: U.S. Patent and Trademark Office.

Kotek, R., & Matthies, H. G. (1997). Saxony carpets having fibers formed of modified polyamide blends. Washington, DC: U.S. Patent and Trademark Office.

Kotek, R., & Matthies, H. G. (1996). Modified nylon fibers. Washington, DC: U.S. Patent and Trademark Office.

Kotek, R. (1994). Semi-continuous depolymerization of nylon 6 polymer. Washington, DC: U.S. Patent and Trademark Office.

Kotek, R., & L., Y. (1993). Hollow trilobal cross-section filament. Washington, DC: U.S. Patent and Trademark Office.

Preston, J., & Krigbaum, W. R. (1992). Poly(p-Phenyleneterephthalamide) of high molecular weight by the modified Higashi phosphorylation reaction. Macromolecular Syntheses, 11.

Preston, J., & Krigbaum, W. R. (1992). Poly(p-benzamide) of moderate molecular weight by Yamazaki phosphorylation reaction. Macromolecular Syntheses, 11.

Kotek, R., & Krigbaum, W. R. (1988). Thermotropic polyesters of 4?-hydroxyphenyl-4-hydrobenzoate: A study of transition temperatures. Journal of Polymer Science. Part B, Polymer Physics, 26, 1173. https://doi.org/10.1002/polb.1988.090260603

Krigbaum, W. R., Preston, J., & Kotek, R. (1986). Comment on a paper by Close, Fornes and Gilbert. Journal of Polymer Science. Part B, Polymer Physics, 24(713). https://doi.org/10.1002/polb.1986.090240317

Krigbaum, W. R., Hakemi, H., & Kotek, R. (1985). Nematogenic polymers having rigid chains. I. Substituted poly(p-phenyleneterephthalates). Macromolecules, 18, 965. https://doi.org/10.1021/ma00147a027

Krigbaum, W. R., Mihara, Y., Preston, J., & Kotek, R. (1985). Preparation of polyamides via the phosphorylation reaction. X. A study of Higashi reaction conditions. Journal of Polymer Science. Part A, Polymer Chemistry, 23, 1907. https://doi.org/10.1002/pol.1985.170230706

Krigbaum, W. R., Kotek, R., Mihara, Y., & Preston, J. (1984). Preparation of polyamides via the phosphorylation reaction. IX. Effect of reaction temperature on molecular weight of poly(p-phenyleneterephthalamide). Journal of Polymer Science. Part A, Polymer Chemistry, 22, 4045. https://doi.org/10.1002/pol.1984.170221239

Krigbaum, W. R., Kotek, R., & Preston, J. (1984). Preparation of polyamides via the phosphorylation reaction.VIII. Journal of Polymer Science. Part A, Polymer Chemistry, 22, 873. https://doi.org/10.1002/pol.1984.170220339

Krigbaum, W. R., Kotek, R., Ishikawa, T., Hakemi, H., & Preston, J. (1984). Thermotropic homopolyesters. VI: A study of polymers based on 4'-Hydroxyphenyl-4-hydroxybenzoate. European Polymer Journal, 20, 225. https://doi.org/10.1016/0014-3057(84)90042-9

Kotek, R., Krigbaum, W. R., & Preston, J. (1983). Preparation of polyamides via the phosphorylation reaction. VII: Synthesis of polyoxamides and regular copolyoxamides. Journal of Polymer Science. Part A, Polymer Chemistry, 21, 2837. https://doi.org/10.1002/pol.1983.170210919

Acierno, D., LaMantia, F. P., Polizzotti, G., Ciferri, A., Krigbaum, W. R., & Kotek, R. (1983). Thermotropic homopolyesters. IV: Study of fibers formation. Journal of Polymer Science. Part B, Polymer Physics, 21, 2027. https://doi.org/10.1002/pol.1983.180211012

Preston, J., Krigbaum, W. R., & Kotek, R. (1982). Synthesis of high-molecular-weight rodlike polyamides and block copolymers. Journal of Polymer Science. Part A, Polymer Chemistry, 20(11), 3241. https://doi.org/10.1002/pol.1982.170201119

Laszkiewicz, B., & Kotek, R. (1981). Synthesis of cyclolinear phosphazene oligomers by reaction of cylcophosphazene dichloride trimer, dissodium salts of dihydroxy compounds and sodium p-bromophenolate. Macromolecular Materials and Engineering, 99, 1.