Journal Articles
Molnar, K.; Helfer, C.A.; Kaszas, G.; Krisch, E. et al., "Liquid chromatography at critical conditions (LCCC): Capabilities and limitations for polymer analysis" Journal of Molecular Liquids 322 (2021) 114956-114964-114956-114964
Helfer, C.A.; Molnar, K., "Polymers: Everywhere from DNA to tires and more!" Ohio's Country Journal (2020)
Puskas, J.; Helfer, C.A., "Do you know who coined the name of “coronavirus”?" Ohio’s Country Journal (2020)
Puskas, J.E.; Helfer, C.A., "Have you taken your Vitamin C today?" Ohio’s Country Journal (2019)
Puskas, J.E.; Helfer, C.A., "Natural rubber biosynthesis: Still a mystery" Rubber Chemistry and Technology 91 4 (2018) 683-700-683-700
Helfer, C.; Davis, B.; Davis, T., "A Biomedical Engineering Twist to Science Fairs" Science Scope 039 05 (2016) 20-26-20-26
Beese, J.; Helfer, C., "Polymer Family Night: The Science Behind the Fun" Science Scope 037 08 (2014) 37-41-37-41
Owens, K.D.; Helfer, C.A., "Akron global polymer academy outreaches to the community: Teachers, parents, children" Polymer Reviews 48 4 (2008) 610-621-610-621
Mattice, W.L.; Helfer, C.A., "Average density of chain atoms at points along the contour of freely jointed chains" POLYMER 46 18 (2005) 7473-7477-7473-7477
Mattice, W.L.; Helfer, C.A.; Rane, S.S.; Von Meerwall, E.D. et al., "Some mechanisms for subtle influences of composition on the physical properties of stereochemical macromolecules" JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS 43 11 (2005) 1271-1282-1271-1282
Helfer, C.A.; Mattice, W.L., "Conformational origin of the molecular weight dependence of the characteristic ratio of the dipole moment in poly(A-B)" POLYMER 46 12 (2005) 4361-4367-4361-4367
Helfer, C.A.; Chen, D.H.; Mattice, W.L.; Farmer, B.L., "Conformations produced by interactions of the side chains in poly(silyienemethylene) with the repeating sequence [Si(CH3)R-CH2](x) [R = -O(CH2)(3)OC6H4C6H5]" JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS 43 8 (2005) 886-896-886-896
Mattice, W.L.; Helfer, C.A., "Conformational end effects in unperturbed chains and star-branched polymers" POLYMER 46 7 (2005) 2389-2394-2389-2394
Mattice, W.L.; Helfer, C.A.; Sokolov, A.P., "Persistence length and finite chain length effect on characteristic ratios" MACROMOLECULES 37 12 (2004) 4711-4717-4711-4717
Xu, G.; Rane, S.S.; Helfer, C.A.; Mattice, W.L. et al., "Monte Carlo simulation of solvent effects on the threading of poly(ethylene oxide)" Modelling and Simulation in Materials Science and Engineering 12 3 (2004)
Helfer, C.A.; Mattice, W.L.; Chen, D., "Substituted poly(silylenemethylene)s with short range interactions that induce a preference for the same local conformation in unperturbed atactic, isotactic, and syndiotactic chains" Polymer 45 4 (2004) 1297-1306-1297-1306
Mattice, W.L.; Helfer, C.A.; Sokolov, A.P., "On the relationship between the characteristic ratio of a finite chain, Cn, and the asymptotic limit, C∞" Macromolecules 36 26 (2003) 9924-9928-9924-9928
Helfer, C.A.; Xu, G.; Mattice, W.L.; Pugh, C., "Monte Carlo simulations investigating the threading of cyclic poly(ethylene oxide) by linear chains in the melt" Macromolecules 36 26 (2003) 10071-10078-10071-10078
Helfer, C.A., "A dedication in honor of professor Wayne Lee Mattice" POLYMER 43 2 (2002) 357-368-357-368
Pugh, C.; Small, A.C.; Helfer, C.A.; Mattice, W.L., "Induction of smectic layering in nematic liquid crystals using immiscible components IV. The effect of bulky lateral carboxyl substituents on the thermotropic behaviour of 2,5-bis [ 4-(n-perfluoroheptyloctyloxy) benzoyloxy] toluene" Liquid Crystals 28 7 (2001) 991-1001-991-1001
Meng, H.; Saito, T.; Rinaldi, P.L.; Wyzgoski, F. et al., "3D NMR characterization of chain ends formed by phosphinyl radical initiated polymerization of styrene" Macromolecules 34 4 (2001) 801-811-801-811
Helfer, C.A.; Mattice, W.L., "Conformation and dynamics of condensed tannins" Trends in Polymer Science 3 4 (1995) 117-123-117-123
Helfer, C.A.; Sun, J.S.; Matties, M.A.; Mattice, W.L. et al., "Implications of the fluorescence for the conformational analysis of polymeric profisetinidins and procyanidins" Polymer Bulletin 34 1 (1995) 79-85-79-85
Steynberg, J.P.; Brandt, E.V.; Ferreira, D.; Helfer, C.A. et al., "Conformational analysis of oligomeric flavanoids. 2—methyl ether acetate derivatives of profisetinidins" Magnetic Resonance in Chemistry 33 8 (1995) 611-620-611-620
Fronczek, F.R.; Hemingway, R.W.; Mcgraw, G.W.; Steynberg, J.P. et al., "Crystal structure, conformational analysis, and molecular dynamics of tetra‐O‐methyl‐(+) ‐catechin" Biopolymers 33 2 (1993) 275-282-275-282
Chapters
"Polyisobutylene for the Rescue: Advanced Elastomers for Healthcare" In Macromolecular Engineering Design, Synthesis, and Application of Polymers. Edited by Lubnin, A.; Erdodi, G.. 2021.
"The Rotational Isomeric State Model" In Physical Properties of Polymers Handbook. Edited by Mark, J.E.. 2007.
"Steady-state fluorescence of polymers" In Comprehensive Desk Reference of Polymer Characterization and Analysis. Edited by Brady, R.F.. 2003.
"Conformation and configuration" In Encyclopedia of Polymer Science and Technology. Edited by Kroschwitz, J.I.. 2003.
"Conformational analysis of profisetinidin dimers" In Plant Polyphenols: Biogenesis, Chemical Properties, and Significance. Edited by Hemingway, R.W.; Laks, P.E.. 1992.
Conferences
Molnar, K.; Helfer, C.; Kaszas, G.; Chen, D. et al., "Rings or Not? Analysis of Disulfide Polymers with Liquid Chromatography at Critical Conditions (LCCC)" 2020 Technical Meeting, International Elastomer Conference, ACS Rubber Division 2020.
Helfer, C.A.; Molnar, K.; Kaszas, G.; Chen, D. et al., "Ring Polymers: A Topology to Control Properties of Elastomeric Materials" 2020 Technical Meeting, International Elastomer Conference, ACS Rubber Division 2020.
Presentations
"Biodiversification of Natural Rubber by Metabolic Engineering." In Bio-Environmental Polymer Society (BEPS). 2021.
"Shear and Extensional Rheology of Highly Entangled Cyclic Polymer in Melts and Solutions." In 2020 AIChE Annual Meeting. 2020.
"BEST Mentoring Program." In 4th Advanced Materials in Healthcare Conference, International Elastomer Conference. 2017.
"BEST Medicine." In Platform for STEM Outreach: Biomedical Engineering, Biomechanics and Biomaterials NSF INCLUDES Conference. 2017.
"Bridging Engineering, Science and Technology in Medicine (BEST Medicine)." In 39th Annual Meeting of the American Society of Biomechanics. 2015.
"K-12 Outreach at The University of Akron." In 245th National Meeting of the American Chemical Society. 2013.
"Chain statistics." In 226th National Meeting of the American Chemical Society. 2003.
"Computer Simulations Investigating Chain Packing in the Unit Cell of a Liquid Crystalline Polyester." In Fall 2002 Seminar Series, Department of Chemistry, Carnegie Mellon University. 2002.
"Comparison of the photophysical properties of profisetinidin dimers with procyanidin dimers." In 204th National Meeting of the American Chemical Society. 1992.
Technical Reports
Davis, B.L.; Amini, R.; Helfer, C.A., "A Platform for STEM Outreach: Biomedical Engineering, Biomechanics and Biomaterials; Formulating a National Strategy for Reaching Underrepresented Students in STEM" 2018.
