Yan Vivian Li

Yan Vivian Li
Colorado State University | CSU · Department of Design and Merchandising

PhD

About

43
Publications
3,740
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516
Citations
Additional affiliations
August 2013 - December 2015
Colorado State University
Position
  • Professor (Assistant)

Publications

Publications (43)
Article
SARS-CoV-2 is a pandemic coronavirus that causes severe respiratory disease (COVID-19) in humans and is responsible for millions of deaths around the world since early 2020. The virus affects the human respiratory cells through its spike (S) proteins located at the outer shell. To monitor the rapid spreading of SARS-CoV-2 and to reduce the deaths f...
Article
Full-text available
In order to significantly enhance the fluorescence and mechanical properties of polyvinyl alcohol (PVA) fluorescent fibers, HBP(P-L) is synthesized by lysine, phenylalanine and N,N-methylene bisacrylamide via Michael addition reaction. Acidified multiwalled carbon nanotubes (MWCNTs) are added in HBP(P-L) solution, which are sonicated to obtain MWCN...
Article
Full-text available
Poly-lactic-co-glycolic acid (PLGA) was mixed with gentamicin sulfate via a double emulsion method, resulting in gentamicin-loaded PLGA nanoparticles that exhibited excellent antibacterial properties and great potential in fabricating smart wound dressings integrated with a drug delivery system. The nanoparticle morphologies, particle degradation r...
Article
To improve the mechanical properties of polyvinyl alcohol (PVA) fibers, a series of PVA fibers were prepared via dry-wet spinning with cross-linking of boric acid (BA) (PVA/BA fibers), and using the mixed solvent of dimethyl sulfoxide and water. Moreover, the final PVA/BA fibers were characterized by Fourier transform infrared spectra (FTIR), scann...
Conference Paper
Full-text available
Polydiacetylene (PDA) is a popular macromolecule in biosensing applications. PDA-based nanofiber composite can detect pathogenic bacteria rapidly via visible blue-to-red color transition in the fiber, offering huge potential to prepare smart wound dressing that can detect bacterial infection in the wound. Due to the complexity of the bacterial cult...
Article
Full-text available
A nanofiber-based polydiacetylene (PDA) biosensor was prepared with polyurethane (PU) to detect Escherichia coli. The main advantage of this PU-PDA nanofiber biosensor was the simplicity of the preparation method via electrospinning where no complex receptors were required to detect E. coli via colorimetric properties. Diacetylene monomers self-ass...
Article
Full-text available
Biomaterials to facilitate the restoration of cardiac tissue is of emerging importance. While there are many aspects to consider in the design of biomaterials, mechanical properties can be of particular importance in this dynamically remodeling tissue. This review focuses on one specific processing method, electrospinning, that is employed to gener...
Article
Polyvinyl alcohol (PVA) fibers were prepared using PVA with different degree of polymerization (DP) under the same wet spinning process. The effect of the DP of PVA on the structures and properties of PVA and PVA fibers were studied by using nuclear magnetic resonance hydrogen spectroscopy (1H‐NMR), Fourier transform infrared spectroscopy (FTIR), X...
Article
Full-text available
Polyvinyl alcohol (PVA)/Attapulgite (ATT) nanocomposite fibers with high strength and high Young’s modulus were prepared via gel spinning. The structures and properties of PVA/ATT nanocomposite fibers were investigated with Fourier transform infrared spectroscopy (FT-IR), differential scanning calorimeter (DSC), thermo gravimetric analysis (TGA), x...
Article
Full-text available
10,12‐Pentacosadiynoic acid (PCDA) monomers were mixed with polyurethane (PU) or poly(ethylene oxide) (PEO) and the mixtures were electrospun to obtain composite nanofibers that were then photopolymerized via ultraviolet radiation, resulting polydiacetylene (PDA) in the nanofibers. The PDA demonstrated color‐changing properties in the presence of E...
Article
In recent years, Janus materials have become a research hotspot in the field of materials science, however fabricating inorganic Janus nanofibers (NFs) is still a challenge. Herein, we reported a novel ZnO/NiO Janus NFs with efficient photocatalytic performance via electrospinning method followed by calcination treatment. The morphology, structure,...
Article
Although Janus films of different composition have been commonly utilized to develop moisture actuators due to different capability of swelling in materials. A sole material with distinct structure designs is also able to provide moisture-actuation. In this study, we simply used graphene oxide (GO) to fabricate a sole GO film with an asymmetric str...
Article
A simple method of using wet spinning was found effective in the preparation of photoluminescent poly vinyl alcohol (PVA)/hyperbranched polylysine (HBPL) fibers. The photoluminescence of the PVA/HBPL fibers was significantly uniform and the unique uniformity was obtained by controlling the mass ratio of PVA to HBPL in aqueous solutions used in the...
Article
Hyperbranched polymers have been found effective in controlling the dispersibility of carbon nanotubes in aqueous solutions. In this study, hyperbranched polylysine (HBPL) was synthesized using lysine and N,N′-methylenebisacrylamide as precursors via Michael addition. The HBPL then was used to noncovalently modify multiwalled carbon nanotubes (MWCN...
Article
Full-text available
Polydiacetylenes (PDAs) are conjugative polymers that demonstrate color changes as a response to an external stimulus. In this study, 10,12-pentacosadiynoic acid (PCDA) was mixed with a supporting polymer including poly(ethylene oxide) (PEO) and polyurethane (PU), and the mixture solution was electrospun to construct fiber composites. The electrosp...
Article
From both users’ and creators’ perspectives, this study examined: (1) designer-users’ needs of smart clothing, (2) designer-identified consumer needs, (3) design purposes, and (4) the relationships among needs and design purposes. Fifteen participants were interviewed. Results indicated, first, users were most interested in affordable, fashionable,...
Article
Persimmon dye is a natural dye potentially used to promote sustainable textile industry. In this article, cotton and wool fabrics were dyed with persimmon dye. The performance of the dye was characterized using color strength and appearance analysis (ColorQuest), American Association of Textile Chemists and Colorists colorfastness tests, and Fourie...
Article
Full-text available
Polydiacetylene (PDA) is an attractive conjugated material for use in biosensors due to its unique characteristic of undergoing a blue-to-red color change in response to external stimuli. 10,12-Pentacosadiynoic acid (PCDA) and poly (ethylene oxide) (PEO) were used in this study to develop fiber composites via an electrospinning method at various ma...
Article
Full-text available
A new class of nearly charge-neutral carbon-cored nanoparticle tracers are remarkably non-interactive with solid surfaces and could provide a valuable baseline for diverse hydrological and environmental studies of subsurface flow and particle transport. We investigate the causes of inertness by studying the interactions with calcite of a nanopartic...
Article
α-Fe2O3 nanoparticles have been widely used in water purification because of their effective adsorption performance. However, aggregation and difficulty in separation limit their practical application. Herein, we presented a polyacrylonitrile (PAN) nanofiber mat decorated with α-Fe2O3 as an adsorbent for effective removal of Pb²⁺ from contaminated...
Conference Paper
Full-text available
The development of advanced medical textiles for wound healing, drug delivery, tissue regeneration, sensing, and diagnostics is changing the face of the medical industry and providing doctors with tools and technology to improve patient care in dramatic ways. The intersection of smart textiles and medicine presents a range of intriguing opportuniti...
Article
The polarity of asphaltenes influences production, transportation, and refining of heavy oils. However, the dipole moment of asphaltene molecules is difficult to measure due to their complex composition and electromagnetic opaqueness. In this work, we present a convenient and efficient way to determine the dipole moment of asphaltene in solution by...
Article
Aqueous silicone-based surfactants are widely used in the processing of synthetic fibers in textile industries since they enhance a number of functional and processing properties. In this paper the interactions between silicone-based surfactants and textile-relevant surfaces (polyethylene and polypropylene) were investigated by quartz crystal micro...
Article
Understanding nanoparticle-surface adhesion is necessary to develop inert tracers for subsurface applications. Here we show that nanoparticles with neutral surface charge may make the best subsurface tracers, and that it may be possible to used SiO2 nanoparticle retention to measure the fraction of solid surface that has positive charge. We show th...
Article
Polyvinylidene fluoride (PVDF) flat-sheet membranes were prepared via a non-solvent-induced phase separation (NIPS) method at 60°C using a hydrophilic surfactant OP-10 (octylphenol polyoxyethylene ether) solely (Blank) or with a second additive [H2O or lithium chloride (LiCl)] as pore-forming agents. The influence of OP-10 concentration on the surf...
Article
Tracers are perhaps the most direct way of diagnosing subsurface fluid flow pathways for ground water decontamination and for natural gas and oil production. Nanoparticle tracers could be particularly effective because they do not diffuse away from the fractures or channels where flow occurs and thus take much less time to travel between two points...
Article
The structure and transformation of fused aromatic ring system in asphaltenes play an important role in the character of asphaltenes, and in step affect the properties of heavy oils. Polarity, solubility and structural characteristics of asphaltenes derived from Tahe atmospheric residue (THAR) and Tuo-826 heavy crude oil (Tuo-826) were analyzed for...
Chapter
Protein-based fibers are generated from many protein sources including plants, insects and animals. The use of natural protein fibers is historical, while man-made regenerated protein fibers have been produced since 1950s and their development remains constant innovation. Protein-based fibers become important in the development of lightweight mater...
Article
Full-text available
[1] The exact manner in which preferential (e.g., much faster than average) flow occurs in the subsurface through small fractures or permeable connected pathways of other kinds is important to many processes but is difficult to determine, because most chemical tracers diffuse quickly enough from small flow channels that they appear to move more uni...
Article
In situ lateral force microscopy (LFM) and X-ray photoelectron spectroscopy (XPS) were used to probe the lubrication behavior of an aqueous solution of poly(oxyethylene)-poly(oxypropylene)-poly(oxyethylene) (PEO-PPO-PEO) symmetric triblock copolymer on thin films of polypropylene (PP), polyethylene (PE), and cellulose. LFM experiments were carried...
Article
The goal of this work was to use molecular dynamics (MD) simulations to build amorphous surface layers of polypropylene (PP) and cellulose and to inspect their physical and interfacial properties. A new method to produce molecular models for these surfaces was developed, which involved the use of a "soft" confining layer comprised of a xenon crysta...
Article
The MesoDyn method is used to investigate associative structures in aqueous solution of a nonionic triblock copolymer consisting of poly(propylene oxide) capped on both ends with poly(ethylene oxide) chains. The effect of adsorbing (hydrophobic) and nonadsorbing (hydrophilic) solid surfaces in contact with aqueous solutions of the polymer is elucid...
Article
The association of a symmetric polyoxyethylene-polyoxypropylene-polyoxyethylene (PEO(19)-PPO(29)-PEO(19)) triblock copolymer adsorbed from aqueous solutions onto polypropylene (PP), polyethylene (PE), and cellulose surfaces was probed using Atomic Force Microscopy (AFM). Significant morphological differences between the polyolefin substrates (PP an...
Chapter
IntroductionPolyampholytes Applications in Fiber ModificationCellulose Thin FilmsFriction Phenomena in Cellulose SystemsLubricationBoundary Layer LubricationTechniques to Study Adsorption and Friction PhenomenaSurface Plasmon Resonance (SPR)Quartz Crystal Microbalance with Dissipation (QCM)Application of SPR and QCM to Probe Adsorbed FilmsLateral F...

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