Academic literature on the topic 'PVA'

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Journal articles on the topic "PVA"

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C., BHATTACHARYYA, N. BHATTACHARYYA S., and M. MANDAL B. "Poly(vinyl propionate) and Poly(ethyl acrylate)- A Miscible Polymer Pair." Journal of Indian Chemical Society Vol. 63, Jan 1986 (1986): 157–60. https://doi.org/10.5281/zenodo.6255725.

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Department of Physical Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Calcutta-700 092 A new miscible polymer pair, <em>viz. </em>poly(vinyl propionate) (PVPr) and poly(ethyl acrylate) (PEA) is reported. Blends of these polymers form clear films, clear solutions in common solvents and have single glass transition temperatures. Miscibility of these two polymers in binary combinations with poly(methyl acrylate) (PMA) or poly(vinyl acetate) (PVA) was also examined. Differential scanning calorimetry (D.S.C.) reveals that PVPr+PVA, PEA +PVA, PMA+PVPr and PMA +PEA are immisc
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Yekymov, Evgenee, David Attia, Yael Levi-Kalisman, Ronit Bitton, and Rachel Yerushalmi-Rozen. "Charge Regulation of Poly(acrylic acid) in Solutions of Non-Charged Polymer and Colloids." Polymers 15, no. 5 (2023): 1121. http://dx.doi.org/10.3390/polym15051121.

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Weak polyelectrolytes (WPEs) are responsive materials used as active charge regulators in a variety of applications, including controlled release and drug delivery in crowded bio-related and synthetic environments. In these environments, high concentrations of solvated molecules, nanostructures, and molecular assemblies are ubiquitous. Here, we investigated the effect of high concentrations of non-adsorbing, short chains of poly(vinyl alcohol), PVA, and colloids dispersed by the very same polymers on charge regulation (CR) of poly(acrylic acid), PAA. PVA does not interact with PAA (throughout
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Huang, Dan, Zhi-De Hu, Tian-Yuan Liu, et al. "Seawater degradation of PLA accelerated by water-soluble PVA." e-Polymers 20, no. 1 (2020): 759–72. http://dx.doi.org/10.1515/epoly-2020-0071.

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AbstractIn order to promote the degradation of PLA in seawater, a series of seawater-degradable polyester blends PVA/PLA were prepared by blending biodegradable polylactic acid (PLA) with water-soluble modified polyvinyl alcohol (PVA) in this paper. ADR 4370S was introduced to bring a certain degree of improvement in compatibility of PVA/PLA blends. The results of degradation test in natural seawater for 180 days show that the weight loss of PVA/PLA blends in seawater is much higher compared with that of pure PLA. PVA can be used as an effective hydrolysis accelerator for PLA matrix, helping t
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Ge, Xiaotian, Li Zhang, Xuanhe Wei, Xi Long, and Yingchao Han. "Plasma Surface Treatment and Application of Polyvinyl Alcohol/Polylactic Acid Electrospun Fibrous Hemostatic Membrane." Polymers 16, no. 12 (2024): 1635. http://dx.doi.org/10.3390/polym16121635.

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In this study, an improved PVA/PLA fibrous hemostatic membrane was prepared by electrospinning technology combined with air plasma modification. The plasma treatment was used to modify PLA to enhance the interlayer bonding between the PVA and PLA fibrous membranes first, then modify the PVA to improve the hemostatic capacity. The surfaces of the PLA and PVA were oxidized after air plasma treatment, the fibrous diameter was reduced, and roughness was increased. Plasma treatment enhanced the interfacial bond strength of PLA/PVA composite fibrous membrane, and PLA acted as a good mechanical suppo
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Ai, Lisha, Yejing Wang, Gang Tao, et al. "Polydopamine-Based Surface Modification of ZnO Nanoparticles on Sericin/Polyvinyl Alcohol Composite Film for Antibacterial Application." Molecules 24, no. 3 (2019): 503. http://dx.doi.org/10.3390/molecules24030503.

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Silk sericin (SS) is a type of natural macromolecular protein with excellent hydrophilicity, biocompatibility and biodegradability, but also has very poor mechanical properties. To develop sericin-based wound dressings, we utilized polyvinyl alcohol (PVA) to reinforce the mechanical property of sericin by blending PVA and sericin, then modified zinc oxide nanoparticles (ZnO NPs) on SS/PVA film with the assistance of polydopamine (PDA) to endow SS/PVA film with antibacterial activity. Scanning electron microscopy, energy dispersive spectroscopy and X-ray powder diffraction demonstrated ZnO NPs
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Bi, Hongyan, Tianyi Feng, Binbin Li, and Yingchao Han. "In Vitro and In Vivo Comparison Study of Electrospun PLA and PLA/PVA/SA Fiber Membranes for Wound Healing." Polymers 12, no. 4 (2020): 839. http://dx.doi.org/10.3390/polym12040839.

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Wound dressings can accelerate wound healing. The degradable polymer poly(lactic acid) (PLA) shows good mechanical properties and biocompatibility. Sodium alginate (SA) holds good biocompatibility, hemostasis, and high hygroscopicity. Poly(vinyl alcohol) (PVA) has good spinnability as a pharmaceutical excipient. Herein, we carried out a comparison study of electrospun PLA and PLA/PVA/SA fiber membranes for wound healing in vitro and in vivo. In this study, PLA and PLA/PVA/SA nanofiber membranes were fabricated through electrospinning to produce a highly porous and large specific surface area t
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Fritsche, R., S. Thomas, and S. F. Perry. "EFFECTS OF SEROTONIN ON CIRCULATION AND RESPIRATION IN THE RAINBOW TROUT ONCORHYNCHUS MYKISS." Journal of Experimental Biology 173, no. 1 (1992): 59–73. http://dx.doi.org/10.1242/jeb.173.1.59.

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The effects of serotonin (5-hydroxytryptamine; 5-HT) on continuously recorded dorsal and ventral aortic blood pressures, (Pda, Pva), arterial oxygen tension (PaO2), arterial carbon dioxide tension (PaCO2), extracellular pH (pHa), buccal pressure (Pbuccal) and plasma catecholamine levels were investigated in rainbow trout, Oncorhynchus mykiss. Intra-arterial injections of serotonin (50–250 nmol kg-1) caused a rapid decrease in Pda and an increase in Pva, suggesting vasoconstriction of the branchial vasculature. The blood pressure changes were accompanied by a reduction in PaO2 (approximately 3–
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Sandoval-Herrera, Isela, Jorge Romero-García, Antonio Ledezma-Pérez, Carmen Alvarado-Canché, Román Torres-Lubian та Arxel De-León. "Controlled Release of Chlorogenic Acid from Polyvinyl Alcohol/Poly(γ-Glutamic Acid) Blended Electrospun Nanofiber Mats with Potential Applications in Diabetic Foot Treatment". Polymers 13, № 17 (2021): 2943. http://dx.doi.org/10.3390/polym13172943.

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This work biosynthesized poly(γ-glutamic acid) (γ-PGA) produced by Bacillus licheniformis ATCC-9945a. This material was utilized to prepare electrospun nanofibers with solutions of 10% polyvinyl alcohol (PVA) (w/v) mixed with γ-PGA at 5 and 10% w/v, intended as a wound dressing for diabetic foot treatment. These solutions were loaded with chlorogenic acid (CGA), an active hypoglycemic agent. Morphological analysis showed a decrease in size of the fibers with the combination of PVA/γ-PGA compared to pure PVA nanofibers, which was attributed to the hydrogen bonding interactions between the gluta
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Sachchu, Md Mazedul Haque, Fahim Khandokar Anik, Shanawaz Ahmed, et al. "Crystallographic Investigation of PVA@PLA Nanocomposite Film by X-ray Diffraction: Insight from High Resolution TEM." Journal of Engineering Research and Reports 27, no. 3 (2025): 310–27. https://doi.org/10.9734/jerr/2025/v27i31436.

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PLA-PVA films have desirable unique, unparalleled properties such as good oxygen and moisture barrier, excellent mechanical strength and low toxicity. The biodegradability of PLA and PVA offers a sustainable alternative to traditional plastic packaging. The PLA-PVA film stacking technology and its potential benefits for sustainable packaging. The XRD pattern of PVA exhibited sharp diffraction peaks at 20.0 ° and 41.0 °, reflecting its semi-crystalline nature, with the peak at 20.0 ° where a main diffraction of PLA was found around 16.5 °. PVA generally crystallizes in the monoclinic unit cell
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Yoshida, Kentaro, Akane Yamaguchi, Hiroki Midorikawa, et al. "Adsorption and Release of Rose Bengal on Layer-by-Layer Films of Poly(Vinyl Alcohol) and Poly(Amidoamine) Dendrimers Bearing 4-Carboxyphenylboronic Acid." Polymers 12, no. 8 (2020): 1854. http://dx.doi.org/10.3390/polym12081854.

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Phenylboronic acid-bearing polyamidoamine dendrimer (PBA-PAMAM)/poly(vinyl alcohol) (PVA) multilayer films were prepared through the layer-by-layer (LbL) deposition of PBA-PAMAM solution and PVA solution. PBA-PAMAM/PVA films were constructed successfully through the formation of boronate ester bonds between the boronic acid moiety in PBA and 1,3-diol units in PVA. When the (PBA-PAMAM/PVA)5 films were immersed in rose bengal (RB) solution, RB was adsorbed onto the LbL films. The amount of RB adsorbed was higher in the LbL films immersed in acidic solution than in basic solution. The release of
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Dissertations / Theses on the topic "PVA"

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Busu, Alice. "Development of PVA/PDA nanocomposite membranes for CO2 capture." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020.

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In this project, composite membranes containing nanoparticles of polydopamine PDA (dopamine polymer) will be manufactured and characterized in view of their use for the separation of CO2. Polysulfone will be used as a polymer matrix support while poly(vinyilalcohol) has been chosen as selective layer material. The work will first focus on the optimization of the manufacturing parameters of nano composite membranes and then on the influence of the integration of PDA nanoparticles in the polymeric support at different concentrations. The final objective is to test the material properties, with
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Berstad, Eivind. "Testing and Optimization of PVAm/PVA Blend Membranes for Biogas Upgrading." Thesis, Norges Teknisk-Naturvitenskaplige Universitet, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-21058.

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Membrane technology is an energy saving, environment friendly and low cost separation technology. This master&#146;s thesis has focused on testing and optimization of polyvinylamine/polyvinylalcohol (PVAm/PVA) blend fixed-site-carrier (FSC) membranes on polysulfone supports for separation of carbon dioxide (CO2) and methane (CH4). Permeation tests, process simulation and cost estimation were applied to evaluate CO2/CH4 separation performance and process feasibility for biogas upgrading. Utilization of biogas as a natural gas substitute or as vehicle fuel can contribute to reduced greenhouse ga
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Limberger, Jaqueline Rocha. "Nanofibras de PVA/PAA com incorporação de hidroxiapatita e sua aplicação em sistemas osteocondutores." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2015. http://hdl.handle.net/10183/131729.

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Esse trabalho tem por objetivo o desenvolvimento de um biomaterial constituído de poli (álcool vinílico) (PVA) e poli (ácido acrílico) (PAA) contendo hidroxiapatita (HA) visando a aplicação em sistemas osteocondutores. As nanofibras poliméricas foram produzidas pelo método de eletrofiação a fim de mimetizar a matriz extracelular do osso (ECM), além de obter um material com maior relação área superfície quando comparada a materiais de maiores escalas, o que melhora a adesão e proliferação da célula óssea. Para essa finalidade foi utilizado uma matriz de PVA e PAA variando a concentração da HA n
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Bhattarai, Rajan Sharma Bhattarai. "Comparison of Electrospun and Solvent Cast PLA/PVA Inserts as Potential Ocular DrugDelivery Vehicles." University of Toledo Health Science Campus / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=mco1469787337.

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Depp, Michelle McRae. "PVA cryogel optimization and diffusion studies." Thesis, Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/11194.

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Bernhard, Kathleen C. "Methods to create and characteristics of porous poly(vinyl) alcohol for the purpose of facial implants." Thesis, Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/53112.

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Facial implants are becoming more common in America and across the world. In the United States last year, over 260,000 augmentation and reconstruction surgeries were performed on facial cartilage areas, while over two million soft tissue fillers were administered. The current implants on the market, though, are deficient in three major areas: they are too rigid, susceptible to migration, and require a large incision. Alternatively, dermal fillers lack shape and biodegrade too quickly. Poly(vinyl) alcohol (PVA) cryogel is a promising hydrogel alternative due to its softness, durable nature
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Guerrouani, Nadia. "Synthèse de copolymères amphiphiles triblocs PHA-b-PEG-b-PHA et greffés PVA-g-PHA : Modification de surface de films par plasma." Montpellier 2, 2005. http://www.theses.fr/2005MON20198.

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Kunovjánek, Miroslav. "Studium vodivosti PVA membrán, obsahujících alkalické hydroxidy." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2016. http://www.nusl.cz/ntk/nusl-234580.

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Thesis deals with study of separators and membranes, suitable for using in alkali electrochemical applications like fuel cells or electrolysis. As basic material for membranes production is used polyvinylalkohol (PVA). Various methods of PVA cross linking are introduced in the thesis. PVA membranes are also doped by various types of additives to improve the attributes of the membranes like mechanical stability and or conductivity. The aim of the work is verification of parameters of membranes, doped by alkali hydroxides KOH, NaOH and LiOH at various temperatures. These hydroxides are added to
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Pedroso, Maitê Golinelli Vanella. "Estudo comparativo de colágeno hidrolisado e comercial com adição de PVA." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/75/75132/tde-11032010-111128/.

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O desenvolvimento de novos materiais tem sido baseado na mistura de dois ou mais polímeros ou biopolímeros, onde soluções destes são misturadas em diferentes proporções na tentativa de se obter materiais com propriedades distintas das de seus precursores. Neste trabalho foram analisadas blendas colágeno:PVA. O colágeno utilizado foi o tipo I, porem proveniente de duas formas diferentes, o colágeno comercial que foi cedido pela Novaprom Food Ingredients Ltda e o colágeno obtido a partir de tendão bovino por meio de hidrólise alcalina em diferentes tempos (24h e 96h). As blendas e os colágenos f
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Atlan, Michaël. "Implantation et évaluation de micro-implants vasculaires (< 2mm), à base d’alcool polyvinylique." Thesis, Sorbonne Paris Cité, 2016. http://www.theses.fr/2016USPCD035/document.

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Sur la base de précédents travaux de l’unité INSERM 1148, sur des films à base d’alcool polyvinylique, nous avons implanté et évalué des prothèses de moins de 2mm de diamètre. L’ajout de gelatine in vitro a montré des capacités d’adhérence cellulaires, compatibles avec une endothelialisation in situ, des implants garant, d’une perméabilité à long terme. Notre modèle était le remplacement de 1cm d’aorte sous rénale de rat. Ces implants, ont été utilisées comme modèle d’entrainement basse fidélité à la microchirurgie, avec de meilleurs résultats sur l’acquisition de la technique d’anastomose mic
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Books on the topic "PVA"

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Mousa, Mohanad, and Yu Dong. Multiscaled PVA Bionanocomposite Films. Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-8771-9.

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Ññuivʻ, Muiṅʻ. Pra kuihʻ paññā gñuai nai treṃ trahʻ-pva ma thatʻ yukʻ. La roṅʻ khraññʻ Puṃ nhipʻ Tuikʻ], 1993.

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Ññuivʻ, Muiṅʻ. Pra kuihʻ paññā gñuai nai treṃ trahʻ-pva ma thatʻ yukʻ. La roṅʻ khraññʻ Puṃ nhipʻ Tuikʻ], 1993.

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Silvia, Patachia, ed. Poly (vinyl alcohol)(pva)-based polymer membranes. Nova Science Publishers, 2009.

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Silvia, Patachia, ed. Poly (vinyl alcohol)(pva)-based polymer membranes. Nova Science Publishers, 2009.

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Strzinar, I. Alkyl substituted PVA hydrogels with enhanced albumin affinity. National Library of Canada, 1990.

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Pva. Gambhīra Cha rā Pva e* Gambhīra puṃ praṅʻ myāʺ. Muiʺ Maṅʻʺ Cā pe, 1997.

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Hamilton, Clydine. History of the Twin Cedars Lodge and the Moutain States Chapter PVA fishing derby. C. Hamilton, 1996.

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Chaṅʻʹ, ʼOṅʻ Khaṅʻ. Tacʻ kuiyʻ toʻ kyanʻʺ mā reʺ pra pvai. Sinʻʺ Miṅʻʺ Cā pe, 2009.

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Institute, Library Binding, ed. Long-term service life and performance characteristics of the PVA cold emulsion adhesives used for the double fanning process in library binding: Are PUR adhesives a viable alternative? Library Binding Institute, 1991.

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Book chapters on the topic "PVA"

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Gooch, Jan W. "PVA." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_9632.

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Mousa, Mohanad, and Yu Dong. "Introduction to PVA-Based Bionanocomposite Films." In Multiscaled PVA Bionanocomposite Films. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-8771-9_1.

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Mousa, Mohanad, and Yu Dong. "Materials, Methodology and Characterisation Techniques." In Multiscaled PVA Bionanocomposite Films. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-8771-9_2.

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Mousa, Mohanad, and Yu Dong. "PVA/BC Bionancomposite Films with Particle Size Effect." In Multiscaled PVA Bionanocomposite Films. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-8771-9_3.

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Mousa, Mohanad, and Yu Dong. "PVA Bionanocomposite Films with Different Particle Shapes and Structures." In Multiscaled PVA Bionanocomposite Films. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-8771-9_4.

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Mousa, Mohanad, and Yu Dong. "3D Interphase of PVA Bionanocomposite Films." In Multiscaled PVA Bionanocomposite Films. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-8771-9_5.

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Mousa, Mohanad, and Yu Dong. "Micromechanical Models of PVA-Based Bionanocomposite Films." In Multiscaled PVA Bionanocomposite Films. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-8771-9_6.

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Mousa, Mohanad, and Yu Dong. "Applications of Bionanocomposite Materials." In Multiscaled PVA Bionanocomposite Films. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-8771-9_7.

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He, Yabin, Lei Yu, Sheng Chen, Chuankai Yan, Zhansheng Lin, and Chen Yu. "The Influence of Hybrid Fiber Ratio on the Mechanical Properties of Concrete." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-4090-1_10.

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AbstractThe concrete with different fibre and ratio can lead to different performance. This paper studies the mechanical properties of concrete by changing the ratio of PVA fibre and steel fibre. Three kinds of ratio of the PVA fibre and steel fibre are studied. They are 0% PVA fibre and 0% steel fibre, 0.25% PVA fibre and 0.75% steel fibre, 0.5% PVA fibre and 0.5% steel fibre. The compressive strength, flexural strength, bending toughness are tested. The test result shows that the compressive strength of the P0.25S0.75 increases. While the group of P0.5S0.5 shows a little range of decreasing.
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Satoh, Kotaro. "Poly(vinyl alcohol) (PVA)." In Encyclopedia of Polymeric Nanomaterials. Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-36199-9_246-1.

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Conference papers on the topic "PVA"

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Korhatzis, Efstratios, Konstantinos Xanthopoulos, and Konstantinos D. Demadis. "Polymeric Silica Scale Inhibitors: Computational Predictions and Experimental Studies on Inhibitor Efficiencies." In CONFERENCE 2022. AMPP, 2022. https://doi.org/10.5006/c2022-17706.

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ABSTRACT In the present work we present experimental and computational results on the efficacy of two simple polymers, polyethylene glycol (PEG) and polyvinyl alcohol (PVA) on silica scale inhibition. The aim of this study is to compare the experimental and computational approaches, in order to explain why PEG is an effective silica inhibitor, while PVA is not. Based on the computational studies, PVA prefers to form interactions between the polymeric chains and not between the polymeric chains and the silicic acid molecules. In contrast, PEG does induce stabilizing interactions between the pol
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Ikhsan Sugiarto, H., Rita Irmawaty, and Januarty Jaya Ekaputri. "Flexural Behavior of Hybrid Geopolymer Fly Ash Beams with Addition of PVA (Polyvinyl Alcohol) Fiber." In The 6th International Symposium on Infrastructure Development. Trans Tech Publications Ltd, 2025. https://doi.org/10.4028/p-g5u7of.

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Using cement as the primary material for making concrete, around 7%-15%, requires a significant amount of energy and generates abundant waste, thus significantly impacting the environmental conditions. Innovative materials are needed as alternatives to cement. Fly ash, as an environmentally friendly material, can be a solution to minimize the use of cement. The selected fiber is Poly-Vinyl Alcohol (PVA) fiber due to its high tensile strength, which can effectively inhibit the rate of crack development occurring in the beams. The research process was divided into two stages: geopolymer mortar c
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Chen, Chien Chin, Meng Chang Chen, and Yeali Sun. "PVA." In the seventh ACM SIGKDD international conference. ACM Press, 2001. http://dx.doi.org/10.1145/502512.502548.

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Islam, Mohammad Hamidul, Hirohisa Morikawa, Hirofusa Shirai, and Toshihiro Hirai. "Slip of Newtonian Fluid in the Polymer Hydrogel Tube Wall." In ASME/JSME 2003 4th Joint Fluids Summer Engineering Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/fedsm2003-45159.

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Poly(vinyl alcohol) (PVA) hydrogel tube was prepared from PVA-dimethylsulfoxide/water solution by repetitive cooling method. The inner surface of the PVA hydrogel tube was chemically modified with poly(acrylic acid) (PAA). Slip of Newtonian fluid in intact and modified PVA hydrogel tubes (sub-millimeter inner diameter) was studied. The slip was inferred by observing the motion of micron-sized spherical monodispersed polystyrene particles suspended in the flowing water by using an optical microscope from very low to medium flow rate. The particle velocity was estimated by both particle tracking
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Han, Changwan, Seonghun Park, and Hanjong Kim. "Dynamic Response of Polyvinyl Alcohol(PVA)-Hydrogel With Different PVA Concentrations." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-37811.

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Polyvinyl Alcohol-Hydrogel (PVA-H) is a biomaterial used for manufacturing contact lenses as well as for the medium of drug delivery. Previous studies have also showed that PVA-H exhibits superior biocompatibility with hydrophilic elastic nature. The aim of this study is to examine the possible usage of the PVA-H as cartilage replacement material by determining the static and dynamic mechanical properties of PVA-H with different ratios of polyvinyl alcohol (PVA) and phosphate buffered saline (PBS) compositions. Three different types of PVA-H specimens were made by changing the ratio of PVA (Si
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Liang, J. I., H. C. Hsu, Y. H. Nien, et al. "Cell response to Electrospun PVA and PVA/Chitosan nanofibers." In 2009 IEEE 35th Annual Northeast Bioengineering Conference. IEEE, 2009. http://dx.doi.org/10.1109/nebc.2009.4967779.

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Lessard, Roger A., Bruno Robert, Emmanuel Laurencon, David Deswasmes, Christine Pizzocaro, and Michele Bolte. "Dichromated (PVA-PAA) material: optimization of the holographic response." In Applications of Photonic Technology, edited by Roger A. Lessard and George A. Lampropoulos. SPIE, 2003. http://dx.doi.org/10.1117/12.543528.

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NASSAR, Roz-Ud-Din. "Machine learning approach for predicting the compressive and flexural strengths of fiber-reinforced concrete mixtures." In Civil and Environmental Engineering for Resilient, Smart and Sustainable Solutions. Materials Research Forum LLC, 2025. https://doi.org/10.21741/9781644903414-45.

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Abstract. This study employed the Extreme Gradient Boosting (XGBoost) Machine Learning (ML) model to predict the compressive and flexural strengths of concrete mixtures reinforced with 0.5, 1.0, and 1.5% of polyvinyl alcohol (PVA) fibers volume fractions at 28 days of concrete age. A significant increase in the compressive and flexural strengths of the resulting concrete mixtures was recorded as a result of the incorporation of PVA fibers, particularly at the higher fiber volume fraction level when compared with that of control mixture produced without the addition of PVA fibers. The ML model-
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Kosukegawa, Hiroyuki, Chihaya Kiyomitsu, and Makoto Ohta. "Control of Wall Thickness of Blood Vessel Biomodel Made of Poly (Vinyl Alcohol) Hydrogel by a Three-Dimensional-Rotating Spin Dip-Coating Method." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-64619.

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To control the thickness of a PVA-H biomodel of human arteries and veins (150 to 800 μm in thickness), a three-dimensional-rotating spin dip-coating apparatus was fabricated. A straight aluminum cylinder (Ra = 0.16 μm) was employed as substrate. Spin dip-coating was carried out in a cooling chamber at 10°C for 1 hour, and then the substrate was quenched at −30°C for gelation of PVA. The thickness of the deposited PVA-H was measured by using a confocal laser displacement meter. Under the experimental conditions employed, PVA-H with a thickness over 30 μm was obtained. The thickness linearly inc
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Kuo, Ping-Chung, Dai-Syuan Wu, Li-Lun Wang, Min-Yan Shia, and Hsin Her Yu. "Applications of PVA/PAA proton exchange membrane in fuel cell." In 2007 International Conference on Solid State Devices and Materials. The Japan Society of Applied Physics, 2007. http://dx.doi.org/10.7567/ssdm.2007.p-10-1.

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Reports on the topic "PVA"

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ตัณฑะพานิชกุล, วิวัฒน์. การผลิตบรรจุภัณฑ์จากชานอ้อย : รายงานวิจัยฉบับสมบูรณ์. จุฬาลงกรณ์มหาวิทยาลัย, 2003. https://doi.org/10.58837/chula.res.2003.52.

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ชานอ้อยเป็นผลิตภัณฑ์ที่เหลือใช้จากอุตสาหกรรมน้ำตาล ซึ่งจะใช้ประโยชน์เป็นวัตถุดิบในการผลิตบรรจุภัณฑ์ที่สามารถย่อยสลายในธรรมชาติได้ ในงานวิจัยนี้ได้นำชานอ้อยมาใช้เป็นวัตถุดิบในการผลิตบรรจุภัณฑ์ ในงานวิจัยได้ให้ความสนใจกระบวนการผลิตใหม่ๆ ของการผลิตบรรจุภัณฑ์จากชานอ้อยซึ่งเส้นใยของชานอ้อยและพลาสติไซเซอร์มีคุณสมบัติที่ให้ความแข็งแรงและป้องกันน้ำได้ดี นอกจากคุณสมบัตินี้แล้วยังมีคุณสมบัติอื่นๆ อีกนั้นก็คือ สามารถย่อยสลายตามธรรมชาติและยังสามารถป้องกันการซึมผ่านของออกซิเจนได้ ซึ่งจะใช้เป็นส่วนประกอบที่สำคัญในการผลิตบรรจุภัณฑ์เพื่อยืดอายุผลไม้ จากการทดลองเพื่อหากระบวนการและอัตราส่วนที่ดีที่สุดเพื่อใช้ใน
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Feng, Ningning, Jianbin Guan, Xing Yu, et al. Jintiange Capsule May Have a Positive Effect in OVCF Patients with percutaneous vertebral augmentation: A Meta-Analysis of Randomized Trials. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, 2022. http://dx.doi.org/10.37766/inplasy2022.9.0038.

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Review question / Objective: We aimed to conduct a meta-analysis of the effects of JTG capsules on patients with OVCF underwent PVA surgery, focusing on clinical outcomes and drug safety. Condition being studied: This meta-analysis aims to systematic evaluation of clinical efficacy and adverse effects of JTG with PVA in the treatment of osteoporotic vertebral compression fracture (OVCF).Our current evidence suggests that JTG capsule may relieve pain in OVCF patients who underwent PVA surgery, improve functional activity, and increase BMD, particularly in patients under the age of 70, as well a
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Benson, Elizabeth A., S. J. Lee, and W. M. Kriven. Preparation of Portland Cement Components by PVA Solution Polymerization. Defense Technical Information Center, 1998. http://dx.doi.org/10.21236/ada358601.

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ten Napel, Jan, Francesca Neijenhuis, Fleur Hoorweg, and Martien Bokma-Bakker. Evaluatie voortgang PvA naar meer natuurlijke geboorten bij luxe vleesvee. Wageningen Livestock Research, 2019. http://dx.doi.org/10.18174/472867.

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อุตตมะศิล, เล็ก, та สิริพรรณ นิลไพรัช. โครงการลวดไฟฟ้า (Electrical Heating Element) ในเตาเผาอุณหภูมิสูงสำหรับอุตสาหกรรมอัญมณี : รายงานฉบับสมบูรณ์. กองส่งเสริมประสานงานวิจัย ฝ่ายวิจัย จุฬาลงกรณ์มหาวิทยาลัย, 1998. https://doi.org/10.58837/chula.res.1998.89.

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ลวดไฟฟ้าเป็นอุปกรณ์ที่สำคัญในเตาเผาอุณหภูมิ ซึ่งใช้กันแพร่หลายทั้งในอุตสาหกรรมต่างๆ อาทิ อัญมณีและห้องปฏิบัติการซึ่งส่วนใหญ่นำเข้าจากต่างประเทศ ดังนั้นเพื่อเป็นการสนับสนุนอุตสาหกรรมและพัฒนาด้านเทคโนโลยีการผลิตลวดไฟฟ้า จึงได้จัดทำโครงการนี้เพื่อหาส่วนประกอบที่เหมาะสมในการผลิตลวดไฟฟ้าซึ่งมีซิลิกอนเป็นส่วนผสมหลัก และศึกษาวิธีการขึ้นรูปลวดไฟฟ้าแบบต่างๆ ที่ใช้กันในอุตสาหกรรม ตลอดจนการพัฒนาปรับปรุงลวดไฟฟ้าให้มีสมบัติใกล้กับเชิงการค้า จากผลการศึกษาพบว่า การผลิตลวดไฟฟ้าในเชิงการค้ามีด้วยกัน 3 วิธีคือ การform SiC ในที่เดิมจากคาร์บอน และซิลิกอนคาร์ไบด์ การใช้ Reaction bonding ของ SiC และการซินเทอร์ริ่งโ
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Kim, Myong Ok, and Jung Soon Lee. Preparation and characterization of Artemisia Capillaris Thunb Extracts Embedded Electrospun PVA Nanofiber. Iowa State University, Digital Repository, 2016. http://dx.doi.org/10.31274/itaa_proceedings-180814-1721.

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บุญยงมณีรัตน์, ยุทธนันท์. การศึกษาและพัฒนาประสิทธิภาพของเหล็กชุบสังกะสี ความต้านทานการกัดกร่อนสูง : รายงานฉบับสมบูรณ์ ปีที่ 2. จุฬาลงกรณ์มหาวิทยาลัย, 2015. https://doi.org/10.58837/chula.res.2015.103.

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งานวิจัยนี้ได้แบ่งออกเป็น 3 แผนงานย่อย คือ (1) การศึกษาถึงประสิทธิภาพและความเป็นไปได้ในการประยุกต์ใช้ Sol-gel coatings ระบบต่างๆ เพื่อปกป้องผิวเคลือบสังกะสี โดยทำการเปรียบเทียบผิวเคลือบ 3 ระบบ ได้แก่ ระบบที่มี Silicate, Titania และ Chromate ที่ใช้กันโดยทั่วไป (2) การศึกษาถึงผลกระทบของตัวแปรการผลิตที่มีต่อประสิทธิภาพของชั้นเคลือบSilicate และ (3) การเสริมประสิทธิภาพของชั้นเคลือบSilicate ด้วยการผสมสาร Colloidal Silica ผลจากการศึกษาพบว่า Silicate สามารถลดอัตราการเกิดสนิมขาวในสภาวะละอองน้ำได้เทียบเคียงกับระบบ Cr6+ และในสภาวะละอองเกลือนั้นถึงแม้ระบบ Silicate จะมีอัตราการเกิดสนิมขาวที่สูงกว่าระบบ Cr6
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Jackson, K., M. Ross, J. Clark, and Z. Dong. Fabrication of Biofunctionalized PVA/PEI Nanofibers for Rare Earth Element Extraction from Coal Mine Tailings. Office of Scientific and Technical Information (OSTI), 2022. http://dx.doi.org/10.2172/1993547.

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Zhao, Yunge. Promoting Breast Cancer Cell Invasion by Matrix Metalloproteinase-26 in Novel Threedimensional PVA Sponge Culture System. Defense Technical Information Center, 2004. http://dx.doi.org/10.21236/ada437627.

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O'Neill, Arthur J., and Lee C. Crouse. Acute and Four-Week Inhalation Toxicity Study in Rats Exposed to Pyrotechnically Disseminated Black Smoke (PVA). Defense Technical Information Center, 2014. http://dx.doi.org/10.21236/ada608526.

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