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NCSU Scholarly Publications Repository (Search Again)

A growing collection of publications and full text of scholarly works by NC State faculty members, graduate students, and research staff.

Number of Publications: 78
Kotek, Richard


Articles
Naeimirad, M., Zadhoush, A., Kotek, R., Neisiany, R. E., Khorasani, S. N., & Ramakrishna, S. (2018). Recent advances in core/shell bicomponent fibers and nanofibers: A review. Journal of Applied Polymer Science, 135(21).

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

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.

Kotek, R., Afshari, M., Avci, H., & Najafi, M. (2017). Production of polyolefins. Textile Institute Book Series, , 189-264.

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.

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.

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.

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.

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.

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).

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).

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

Chen, P., & Kotek, R. (2008). Advances in the production of poly(ethylene naphthalate) fibers. Polymer Reviews, 48(2), 392-421.

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.

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.

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.

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.

Afshari, M., Gupta, A., Jung, D., Kotek, R., Tonelli, A. E., & Vasanthan N. (2008). Properties of films and fibers obtained from Lewis acidebase complexed nylon 6,6. Polymer, 49(1297).

Kotek, R. (2008). Recent advances in polymer fibers. Polymer Reviews, 48(2), 221-229.

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.

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

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.

Pang, K., Kotek, R., & Tonelli, A. (2006). Review of conventional and novel polymerization processes for polyesters. Progress in Polymer Science, 31(11), 1009-1037.

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.

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.

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.

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.

Vasanthan, N., Kotek, R., Jung, D.W., Shin, D., Tonelli, A.E., & Salem, D.R. (2004). Lewis acid-base complexation of polyamide 6,6 to control hydrogen bonding, extensibility and crystallinity. Polymer, 45(12), 4077.

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.

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.

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.

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.

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.

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.

Afshari, M. Kotek, R., Kish, M. H., Nazock 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.

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.

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.

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).

Krigbaum, W. R., Hakemi, H., & Kotek, R. (1985). Nematogenic polymers having rigid chains. I. Substituted poly(p-phenyleneterephthalates). Macromolecules, 18, 965.

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.

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.

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.

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.

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.

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.

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.

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.

Chapters
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). Cambridge: Woodhead Publishing.

Kotek, R. (2007). Regenerated cellulose fibers. In M. Lewin (Ed.), Handbook of fiber chemistry (3rd. Ed.). Boca Raton: CRC/Taylor & Francis.

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.

Conference Papers
Lee, H. J., Onori, J., Afshari, M., Cuculo, J. & Kotek, R. (2007). Spinning of semi-rigid polymers. In I. Krucin?ska and 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.

Kotek, R., Jung, D.W., & Tonelli, A.E. (2004). High modulus nylon 66 fibers. In 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. In 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. In Papers presented at the Anaheim, California meeting : 227th ACS national meeting, Anaheim, CA, March 28 - April 1, 2004. (pp. 787). Blacksburg, Va.: ACS, Div. of Polymer Chemistry.

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

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

Patents
Jun, D., Kotek, R., Tonelli, A. E., & Vasanthan, N. (2010). High modulus polyamide fibers . U.S. Patent No. 7,666,499.

Kotek, R., Li., W, Shore, G. W. & Yeh, L. (2000). Process of making hollow filaments. U.S. Patent No. 6,120,718. 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. U.S. Patent No. 5,977,193. Washington, DC: U.S. Patent and Trademark Office.

Kotek, R., & Matthies, H. G. (1997). Fiber-forming modified polyamide blends. U.S. Patent No. 5,618,885. Washington, DC: U.S. Patent and Trademark Office.

Kotek, R., & Matthies, H. G. (1997). Process for melt-spinning fibers from modified polyamide blends. U.S. Patent No. 5,623,024. Washington, DC: U.S. Patent and Trademark Office.

Kotek, R., & Matthies, H. G. (1997). Saxony carpets having fibers formed of modified polyamide blends. U.S. Patent No. 5,612,112. Washington, DC: U.S. Patent and Trademark Office.

Kotek, R., & Matthies, H. G. (1996). Modified nylon fibers. U.S. Patent No. 5,559,194. Washington, DC: U.S. Patent and Trademark Office.

Kotek, R. (1994). Semi-continuous depolymerization of nylon 6 polymer. U.S. Patent No. 5,294,707. Washington, DC: U.S. Patent and Trademark Office.

Kotek, R., & Yeh L. (1993). Hollow trilobal cross-section filament. U.S. Patent No. 5,208,107. Washington, DC: U.S. Patent and Trademark Office.


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