Electrospinning is a rapidly developing technology that provides a unique way to produce novel polymer nanofibers with controllable diameters. Cellulose nitrate non-woven mats of submicron-sized fibers with diameters of 100-1200 nm were prepared. The effects of processing equipment collector design void gap, and steel drum coated with polyvinylidene dichloride (PVDC) were investigated. The PVDC layer applied to the rotating drum aided in fiber harvesting. Electron microscopy (FESEM and ESEM) studies of as-spun fibers revealed that the morphology of cellulose nitrate fibers depended on the collector type and solution viscosity. When a rotating steel drum was employed a random morphology was observed, while the void gap collector produced aligned fiber mats. Increases in viscosity lead to larger diameter fibers. The fibers collected were free from all residual solvents and could undergo oxygen plasma treatment to increase the hydropholicity.
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http://dx.doi.org/10.1166/jnn.2011.3072 | DOI Listing |
Microb Ecol
December 2024
Laboratory of Marine Organism Taxonomy and Phylogeny, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China.
Oligotrophs are predominant in nutrient-poor environments, but copiotrophic bacteria may tolerate conditions of low energy and can also survive and thrive in these nutrient-limited conditions. In the present study, we isolated 648 strains using a dilution plating method after enrichment for low-nutrient conditions. We collected 150 seawater samples at 21 stations in different parts of the water column at the Zhenbei Seamount in the South China Sea.
View Article and Find Full Text PDFSci Total Environ
December 2024
The Research Center of Soil and Water Conservation and Ecological Environment, Chinese Academy of Sciences and Ministry of Education, Yangling, Shaanxi 712100, China; Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Yangling, Shaanxi 712100, China. Electronic address:
Land degradation due to salinization threatens ecosystem health. Phytoremediation, facilitated by functional microorganisms, has gained attention for improving saline-alkali soils. However, the relationship between the functional potential of rhizosphere microbes involved in multi-element cycling and soil nutrient pools remain unclear.
View Article and Find Full Text PDFNanoscale
December 2024
Institute of Advanced Study in Science and Technology, Paschim Boragaon, Guwahati-35, Assam, India.
Reliable point-of-care (POC) detection of the specific biomarkers responsible for different diseases is crucial for health monitoring. For the routine detection of important biomarkers, rapid, precise, and cost-effective analytical techniques are more and more in demand. Cardiovascular diseases like hypertension, myocardial infarction, and stroke can occur due to high cholesterol levels.
View Article and Find Full Text PDFJ Colloid Interface Sci
December 2024
School of Environmental Science and Engineering, Changzhou University, Changzhou 213164, PR China. Electronic address:
Reducing carbon dioxide (CO) levels in the atmosphere is crucial for combating global warming. One effective strategy involves using porous materials for the combined processes of CO capture and catalytic conversion. In this study, we developed composite aerogel materials using cellulose nanocrystals (CNCs) as templates, doped with cerium oxide, to enhance CO capture and conversion.
View Article and Find Full Text PDFACS Appl Mater Interfaces
December 2024
Faculty of Science, Universidad Nacional de Ingeniería, Av. Túpac Amaru 210, Lima 15333, Peru.
The emergence of harmful microorganisms poses a public health challenge. Antimicrobial cotton textiles with semiconductor oxides offer a promising solution to mitigate pathogen spread. Here, we study the physicochemical interactions between copper oxides (CuO) and cellulose in cotton fiber functionalized with these same oxides for antimicrobial properties.
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