@article{wang_yildiz_li_aly_qiu_jiang_pui_chen_bradford_2020, title={High temperature carbon nanotube - Nanofiber hybrid filters}, volume={236}, ISSN={["1873-3794"]}, DOI={10.1016/j.seppur.2019.116255}, abstractNote={Novel hybrid filters composed of aligned carbon nanotube (CNT) sheets, sandwiched between electrospun polyimide (PI) nanofiber membranes serving as the supporting layers, were fabricated for the capture of fine particles. The CNT sheets and PI nanofiber membranes were thermally bonded together by melting electrospun polyetherimide (PEI) nanofibers. Two different kinds of filter structures were prepared, where multiple layers of aligned CNT sheets were either stacked together on top of each other or separated from each other by a PEI layer. The filtration performance tests showed that the filtration efficiency increased with increasing number of CNT sheets. The maximum filtration efficiency reached 99.99% at 5.3 cm/s face velocity for 0.3 μm particles by the 4-layer CNT filter, while the pressure drop was only 120 Pa. In mechanical testing, the CNT sheets also reinforced the hybrid filters, even though the PI nanofiber membrane already had relatively high mechanical properties. The tensile strength of the 4-layer CNT hybrid filters was 9 MPa, reaching the highest tier of strength reported for nanofiber membranes. In addition to high efficiency and low pressure drop, the hybrid all-nanofiber filters are also targeted for use in hot gas filtration applications where temperatures reach 200–250 °C.}, journal={SEPARATION AND PURIFICATION TECHNOLOGY}, author={Wang, Qiannan and Yildiz, Ozkan and Li, Ang and Aly, Karim and Qiu, Yiping and Jiang, Qiuran and Pui, David Y. H. and Chen, Sheng-Chieh and Bradford, Philip D.}, year={2020}, month={Apr} }
 @article{liang_lin_qiu_zhang_2011, title={Fabrication and characterization of LATP/PAN composite fiber-based lithium-ion battery separators}, volume={56}, ISSN={["0013-4686"]}, url={https://publons.com/publon/6540061/}, DOI={10.1016/j.electacta.2011.05.007}, abstractNote={Lithium aluminum titanium phosphate (LATP)/polyacrylonitrile (PAN) composite fiber-based membranes were prepared by electrospinning dispersions of LATP particles in PAN solutions. The electrolyte uptakes of the electrospun LATP/PAN composite fiber-based membranes were measured and the results showed that the electrolyte uptake increased as the LATP content increased. The lithium ion conductivity, the electrochemical oxidation limit and the interface resistance of liquid electrolyte-soaked electrospun LATP/PAN composite fiber-based membranes were also measured and it was found that as the LATP content increased, the electrospun LATP/PAN composite fiber-based membranes had higher lithium ion conductivity, better electrochemical stability, and lower interfacial resistance with lithium electrode. Additionally, lithium//1 M LiPF6/EC/EMC//lithium iron phosphate cells using LATP/PAN composite fiber-based membranes as the separator demonstrated high charge/discharge capacity and good cycle performance.}, number={18}, journal={ELECTROCHIMICA ACTA}, author={Liang, Yinzheng and Lin, Zhan and Qiu, Yiping and Zhang, Xiangwu}, year={2011}, month={Jul}, pages={6474–6480} }
 @article{liang_ji_guo_lin_yao_li_alcoutlabi_qiu_zhang_2011, title={Preparation and electrochemical characterization of ionic-conducting lithium lanthanum titanate oxide/polyacrylonitrile submicron composite fiber-based lithium-ion battery separators}, volume={196}, ISSN={["1873-2755"]}, url={https://publons.com/publon/6540087/}, DOI={10.1016/j.jpowsour.2010.06.088}, abstractNote={Lithium lanthanum titanate oxide (LLTO)/polyacrylonitrile (PAN) submicron composite fiber-based membranes were prepared by electrospinning dispersions of LLTO ceramic particles in PAN solutions. These ionic-conducting LLTO/PAN composite fiber-based membranes can be directly used as lithium-ion battery separators due to their unique porous structure. Ionic conductivities were evaluated after soaking the electrospun LLTO/PAN composite fiber-based membranes in a liquid electrolyte, 1 M lithium hexafluorophosphate (LiPF6) in ethylene carbonate (EC)/ethyl methyl carbonate (EMC) (1:1 vol). It was found that, among membranes with various LLTO contents, 15 wt.% LLTO/PAN composite fiber-based membranes provided the highest ionic conductivity, 1.95 × 10−3 S cm−1. Compared with pure PAN fiber membranes, LLTO/PAN composite fiber-based membranes had greater liquid electrolyte uptake, higher electrochemical stability window, and lower interfacial resistance with lithium. In addition, lithium//1 M LiPF6/EC/EMC//lithium iron phosphate cells containing LLTO/PAN composite fiber-based membranes as the separator exhibited high discharge specific capacity of 162 mAh g−1 and good cycling performance at 0.2 C rate at room temperature.}, number={1}, journal={JOURNAL OF POWER SOURCES}, author={Liang, Yinzheng and Ji, Liwen and Guo, Bingkun and Lin, Zhan and Yao, Yingfang and Li, Ying and Alcoutlabi, Mataz and Qiu, Yiping and Zhang, Xiangwu}, year={2011}, month={Jan}, pages={436–441} }
 @article{hwang_qiu_zhang_jarrard_stedeford_tsai_park_mccord_2003, title={Effects of atmospheric pressure helium/air plasma treatment on adhesion and mechanical properties of aramid fibers}, volume={17}, ISSN={["0169-4243"]}, DOI={10.1163/156856103321645194}, abstractNote={In order to investigate the effect of atmospheric pressure plasmas on adhesion between aramid fibers and epoxy, aramid fibers were treated with atmospheric pressure helium/air for 15, 30 and 60 s on a capacitively-coupled device at a frequency of 5.0 kHz and He outlet pressure of 3.43 kPa. SEM analysis at 10 000× magnification showed no significant surface morphological change resulted from the plasma treatments. XPS analysis showed a decrease in carbon content and an increase in oxygen content. Deconvolution analysis of C1s, N1s and O1s peaks showed an increase in surface hydroxyl groups that can interact with epoxy resin. The microbond test showed that the plasma treatment for 60 s increased interfacial shear strength by 109% over that of the control (untreated). The atmospheric pressure plasma increased single fiber tensile strength by 16-26%.}, number={6}, journal={JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY}, author={Hwang, YJ and Qiu, Y and Zhang, C and Jarrard, B and Stedeford, R and Tsai, J and Park, YC and McCord, M}, year={2003}, pages={847–860} }
 @article{xu_qiu_wang_mohamed_2003, title={Experimental and numerical analyses on the stiffness of three-dimensional woven carbon preform reinforced cellular matrix composites}, volume={63}, ISSN={["0266-3538"]}, DOI={10.1016/S0266-3538(03)00081-2}, abstractNote={Abstract Three-dimensional cellular matrix composites (3DCMC) and three-dimensional regular matrix composites (3DRMC) were fabricated and tensile tested. The experimental results showed that the stiffness of 3DCMC was lower than that of the 3DRMC. Because of significant density reduction of 3DCMC, their specific stiffness was found to be 12–19% greater than that of the 3DRMC. Stiffness averaging method was used for prediction of the tensile modulus for both 3DCMC and 3DRMC materials. Reasonable agreement between the computational and the experimental results were obtained for 3DRMC (within 3–6%) but a larger discrepancy (18%) existed for 3DCMC. By treating the whole 3DCMC as a special type of rigid foam material, an empirical correlation between the ratio of the moduli and that of the densities of 3DCMC and 3DRMC was used to accurately predict stiffness of 3DCMC from that of 3DRMC (within ±2–5%).}, number={10}, journal={COMPOSITES SCIENCE AND TECHNOLOGY}, author={Xu, W and Qiu, Y and Wang, Y and Mohamed, MH}, year={2003}, month={Aug}, pages={1387–1392} }
 @misc{qiu_mohamed_xu_2003, title={Method of making a three-dimensionally reinforced cellular matrix composite}, volume={6,521,148}, number={2003 Feb. 18}, publisher={Washington, DC: U.S. Patent and Trademark Office}, author={Qiu, Y.-P. and Mohamed, M. H. and Xu, W.}, year={2003} }
 @article{zhang_qiu_2003, title={Modified shear lag model for fibers and fillers with irregular cross-sectional shapes}, volume={17}, ISSN={["0169-4243"]}, DOI={10.1163/156856103762864697}, abstractNote={For fibers with irregular cross sections such as ultrahigh modulus polyethylene (UHMPE) fibers and ribbon-like carbon fibers, the original shear lag model would not provide accurate calculations for interfacial shear stress because it assumes a circular fiber cross section. In this study, a modified shear lag model is proposed to calculate the interfacial shear stress that reflects the change of fiber cross-sectional shape. Microbond test on a UHMPE fiber/epoxy system was used for verification of the model. The difference between the interfacial shear strength (IFSS) calculated using the modified model and that using the original model assuming an equivalent fiber diameter was found to be as high as 15% and it linearly increased as the irregularity of the cross-sectional shape increased. When the irregularity constant exceeds 1.12, the error in IFSS involved in using the original shear lag model and an equivalent fiber diameter is greater than 10%.}, number={3}, journal={JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY}, author={Zhang, CY and Qiu, YP}, year={2003}, pages={397–408} }
 @article{mccord_hwang_qiu_hughes_bourham_2003, title={Surface analysis of cotton fabrics fluorinated in radio-frequency plasma}, volume={88}, ISSN={["0021-8995"]}, DOI={10.1002/app.11896}, abstractNote={Abstract}, number={8}, journal={JOURNAL OF APPLIED POLYMER SCIENCE}, author={McCord, MG and Hwang, YJ and Qiu, Y and Hughes, LK and Bourham, MA}, year={2003}, month={May}, pages={2038–2047} }
 @article{jensen_zhang_qiu_2003, title={The aging of atmospheric plasma-treated ultrahigh-modulus polyethylene fibers}, volume={10}, ISSN={["1568-5543"]}, DOI={10.1163/156855403765826919}, abstractNote={The aging effects of atmospheric plasma treatments on UHMPE fibers are studied. UHMPE fibers are treated for 0.5 and 1 min with He/O2/air gas and for 2 and 4 min with He/air gas by atmospheric pressure plasma on a capacitively coupled device at a frequency of 5 kHz. The samples are tested for fiber/epoxy interfacial shear strength at time intervals of 0, 3, 15 and 30 days after initial plasma treatment. Scanning electron microscopy shows micro-cracks on each set of treated fibers, which is not affected by aging over the 30 day study. Interfacial shear strengths (IFSS) for plasma-treated fibers are 2–3 times as high as that of the control. The IFSS for the plasma treated fibers remains constant up to 15 days and then decreases afterwards. XPS Analysis shows a slight increase in atomic concentration of oxygen and nitrogen for each plasma-treated sample. For the He/O2/air plasma-treated samples, XPS analysis shows an observable increase in C–OH bonds, C=O bonds and COOH bonds, while for the He/air plasma-treated samples, there is a slight increase in C–OH and O=C–O bonds. After 30 days, a decrease in oxygen content for all plasma-treated samples is manifested.}, number={2-3}, journal={COMPOSITE INTERFACES}, author={Jensen, C and Zhang, C and Qiu, Y}, year={2003}, pages={277–285} }
 @article{cai_qiu_2003, title={Using an aqueous epoxide in Bombyx mori silk fabric finishing}, volume={73}, DOI={10.1177/004051750307300108}, abstractNote={In order to increase the performance of silk fabrics, especially their c ease resistance, an epoxy silicone crosslinking agent A (EPSIA) is synthesized and applied to silk fabrics. The physical properties of EPSIA and those of the silk fabrics treated with it are examined. After 240 days' storage, the specific gravity, viscosity, and performance of EPSIA do not change signif icantly. After EPSIA treatment, the dry and wet crease recovery angles of the silk fabric increase 14% and 39%, respectively. Tensile strength, whiteness index, moisture regain, water absorp tion, solubility in a solvent mixture, and contact angle of the treated fabric are either slightly lower or remain unchanged. In dyeing tests, there is a 25% improvement of percent exhaustion of Polar Red 10 B at equilibrium for the treated fabric. In addition, for Lanaset dyes such as Red G, Yellow 2R, and Grey G, the KIS values of the silk fabrics increase after EPSIA treatment, with little change in color, staining, and rubbing fastness.}, number={1}, journal={Textile Research Journal}, author={Cai, Z. S. and Qiu, Y. P.}, year={2003}, pages={42–46} }
 @article{qiu_wang_laton_mi_2002, title={Analysis of energy dissipation in twisted fiber bundles under cyclic tensile loading}, volume={72}, DOI={10.1177/004051750207200705}, abstractNote={ This study of energy loss due to friction in dynamic loading conditions provides a new approach to characterizing fiber-on-fiber friction. Based on the theory of dynamic me chanical behavior of polymeric materials, the systematic experimental study uses cotton and polyester rovings to examine the effect of twist level, cyclic loading magnitude and frequencies, and gauge length on frictional energy loss. The test results are analyzed in comparison with Murayama's dynamic mechanical model. The model does not fit the experimental data, and a modification is proposed for characterizing the frictional energy loss of twisted staple fiber structures. }, number={7}, journal={Textile Research Journal}, author={Qiu, Y. and Wang, Y. and Laton, M. and Mi, J. Z.}, year={2002}, pages={585–593} }
 @article{qiu_hwang_zhang_bures_mccord_2002, title={Atmospheric pressure helium plus oxygen plasma treatment of ultrahigh modulus polyethylene fibers}, volume={16}, ISSN={["1568-5616"]}, DOI={10.1163/156856102760067217}, abstractNote={Ultrahigh modulus polyethylene fibers were treated with atmospheric pressure helium + oxygen plasma in a capacitively coupled device at a frequency of 7.5 kHz. The fibers were treated for 0, 0.5, 1, 1.5, and 2 min. The surfaces of the fibers treated with He + O2 plasma were etched and micro-cracks were formed. XPS analysis showed a 65ndash213% increase in oxygen content on the surfaces of all plasma-treated fibers, except for the 1.5 min group. An increase in the concentration of C—O and the appearance of C=O bonds on the surfaces of plasma-treated fibers were observed. In the micro-bond test, He + O2 plasma-treated groups had a 65–104% increase in interfacial shear strength over that of the control. The tensile strength of the fibers was either unchanged or decreased by 10–13% by the plasma treatments.}, number={4}, journal={JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY}, author={Qiu, Y and Hwang, YJ and Zhang, C and Bures, BL and McCord, M}, year={2002}, pages={449–457} }
 @article{mccord_hwang_hauser_qiu_cuomo_hankins_bourham_canup_2002, title={Modifying nylon and polypropylene fabrics with atmospheric pressure plasmas}, volume={72}, ISSN={["0040-5175"]}, DOI={10.1177/004051750207200605}, abstractNote={ Polypropylene and nylon 66 fabrics are subjected to atmospheric pressure He and He-O2 plasmas for selected exposure time intervals. Scanning electron microscopy anal ysis of the fabrics shows no apparent changes in the plasma-treated nylon fiber surfaces, but significant surface morphological changes for the polypropylene. Surface analyses of the nylon filaments reveal small differences in the surface carbon and oxygen contents between the treated and control groups. The surface oxygen and nitrogen content of the polypropylene fabric increases significantly after treatment in both He and He-O2 plasmas. There is a slight decrease in nylon fabric tensile strength after treatment in He plasma for 3 minutes, while. there is no significant change in tensile strength of the nylon fabric treated with He-O2 after exposure times of up to 8 minutes. }, number={6}, journal={TEXTILE RESEARCH JOURNAL}, author={McCord, MG and Hwang, YJ and Hauser, PJ and Qiu, Y and Cuomo, JJ and Hankins, OE and Bourham, MA and Canup, LK}, year={2002}, month={Jun}, pages={491–498} }
 @article{cai_hwang_park_zhang_mccord_qiu_2002, title={Preliminary investigation of atmospheric pressure plasma-aided desizing for cotton fabrics}, volume={2}, number={12}, journal={AATCC Review}, author={Cai, Z. S. and Hwang, Y. J. and Park, Y. C. and Zhang, C. Y. and McCord, M. and Qiu, Y. P.}, year={2002}, pages={18–21} }
 @article{qiu_zhang_hwang_bures_mccord_2002, title={The effect of atmospheric pressure helium plasma treatment on the surface and mechanical properties of ultrahigh-modulus polyethylene fibers}, volume={16}, ISSN={["0169-4243"]}, DOI={10.1163/15685610252771185}, abstractNote={Ultrahigh-modulus polyethylene fibers were treated with atmospheric pressure He plasma on a capacitively coupled device at a frequency of 7.5 kHz and a He partial vapor pressure of 3.43 × 103 Pa. The fibers were treated for 0, 1, and 2 min. Microscopic analysis showed that the surfaces of the fibers treated with He plasma were etched and that the 2-min He plasma-treated group had rougher surfaces than the 1-min He plasma-treated group. XPS analysis showed a 200% increase in the oxygen content and a 200% increase in the concentration of C—O bonds (from 11.4% to 31%) and the appearance of C=O bonds (from 0% to 7.6%) on the surface of plasma-treated fibers for the 2-min He plasma-treated group. In the microbond test, the 2-min He plasma-treated group had a 100% increase of interfacial shear strength over that of the control group, while the 1-min He plasma-treated group did not show a significant difference from the control group. The 2-min He plasma-treated group also showed a 14% higher single-fiber tensile strength than the control group.}, number={1}, journal={JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY}, author={Qiu, Y and Zhang, C and Hwang, YJ and Bures, BL and McCord, M}, year={2002}, pages={99–107} }
 @misc{qiu_anantharamaiah_xie_vaidya_zhang_2001, title={Atmospheric pressure helium plasma treatment of ultrahigh modulus polyethylene fibres}, volume={10}, number={3}, journal={Advanced Composites Letters}, author={Qiu, Y. and Anantharamaiah, N. and Xie, S. and Vaidya, N. P. and Zhang, C.}, year={2001}, pages={135–139} }
 @article{qiu_xu_wang_zikry_mohamed_2001, title={Fabrication and characterization of three-dimensional cellular-matrix composites reinforced with woven carbon fabric}, volume={61}, ISSN={["0266-3538"]}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-0035657722&partnerID=MN8TOARS}, DOI={10.1016/S0266-3538(01)00164-6}, abstractNote={A low-density three-dimensional cellular-matrix composite reinforced with woven carbon fabric (3DCMC), was fabricated by means of a pressure-quenching molding technique with nitrogen gas as the blowing agent. Epoxy resins in the interstices of yarns in the 3DCMC samples were vacated during the foaming process and needle shaped voids were also generated between fibers in yarns. The average density of the 3DCMC samples was about 103 kg/m3, and their density reduction was 28–37% compared with a regular matrix composite with the same preform. The 3DCMC has 32–42% higher specific tensile strength, 14–37% greater specific tensile modulus, a lower specific flexure strength but 35% higher specific tangent modulus in 3-point bending, a 30–40% higher specific impact energy absorption at an impact velocity around 120 m/s and a similar specific energy absorption at about 220 m/s. Meanwhile, the 3-point bending and impact test results of 3DCMC showed that they have different fracture mechanisms from that of 3DRMC.}, number={16}, journal={COMPOSITES SCIENCE AND TECHNOLOGY}, author={Qiu, YP and Xu, W and Wang, YJ and Zikry, MA and Mohamed, MH}, year={2001}, pages={2425–2435} }
 @article{pan_hua_qiu_2001, title={Relationship between fiber and yarn strength}, volume={71}, ISSN={["1746-7748"]}, DOI={10.1177/004051750107101105}, abstractNote={A theoretical approach is adopted in this paper based on the existing literature in order to present an explicit relationship between the strengths of fibers and yarns. This provides a relatively simple method for quick estimation of staple yarn strength, while avoiding some limitations of an empirical method. The CV values of the strengths are given as well. The effects of important factors such as fiber variation, fiber length and thickness, yarn twist, and yarn packing density are considered, and some are discussed in detail. The results are verified by previously published data.}, number={11}, journal={TEXTILE RESEARCH JOURNAL}, author={Pan, N and Hua, T and Qiu, YP}, year={2001}, month={Nov}, pages={960–964} }
 @article{qiu_batchelor_jack_mccord_2000, title={Estimation of the axial tensile modulus of a particle-reinforced composite fiber with variable radius}, volume={60}, ISSN={["0266-3538"]}, DOI={10.1016/S0266-3538(00)00145-7}, abstractNote={The modulus of a fiber is difficult to measure, especially when the radius of the fiber changes along the length. The use of an arithmetic average radius or volume average radius to calculate fiber modulus leads to an underestimate of the modulus. A model for measuring and calculating the true tensile modulus of a fiber that has large radius variation is proposed. The model has been used to calculate the modulus of a Wollastonite particle-reinforced polypropylene fiber. The difference between the modulus calculated from the model and that from either the arithmetic or volume-average radius increases linearly as the coefficient of variation (CV) of the fiber radius increases, especially when CV< 5%. When the evenness of the fiber increases, i.e. CV → 0, the difference between the three methods for calculating the axial tensile modulus is negligible.}, number={14}, journal={COMPOSITES SCIENCE AND TECHNOLOGY}, author={Qiu, YP and Batchelor, SD and Jack, PR and McCord, MG}, year={2000}, pages={2731–2737} }
 @article{qiu_backer_2000, title={Modeling for suppression of moisture/temperature induced dimensional changes in unbalanced fibrous composite structures with periodic bonding}, volume={70}, DOI={10.1177/004051750007000710}, abstractNote={ Suppression of dimensional change induced by moisture and temperature change is studied for unbalanced structures composed of at least one hygroscopic component. An unbalanced parallel structure with periodic bonding is modeled, taking into account various parameters such as moisture content and temperature at the time of assembly, molecular orientation, and bonding length. The results show that two factors play a major role in moisture/temperature induced dimensional change: longitudinal swelling/shorten ing and material softening/stiffening. Whether the two factors add their effects to each other or compete against each other depends on the moisture content and temperature at the time of structural assembly. There is a range of critical aspect ratios over which the structure is dimensionally stable. This range increases with increasing width and thickness ratios, and decreases with increasing initial moisture regain, initial temperature, and orientation factor. }, number={7}, journal={Textile Research Journal}, author={Qiu, Y. P. and Backer, S.}, year={2000}, pages={621–627} }
 @article{qiu_backer_1998, title={Modeling for suppression of moisture/temperature induced dimensional changes in unbalanced fibrous composite structures with perfect bonding}, volume={68}, DOI={10.1177/004051759806800101}, abstractNote={ Suppression of dimensional change induced by moisture and temperature changes is studied for perfectly bonded, unbalanced, parallel fibrous structures composed of at least one hygroscopic component, taking into account various parameters such as initial moisture content and temperature at the time of assembly, width or height ratio of the two components. molecular orientation, and bonding length. The results show that two factors play major roles in moisture/temperature induced dimensional (curvature) }, number={1}, journal={Textile Research Journal}, author={Qiu, Y. P. and Backer, S.}, year={1998}, pages={1–9} }