Results 21 to 30 of about 2,992,684 (345)

Environmentally Friendly Polymers and Polymer Composites [PDF]

open access: yesMaterials, 2020
In the last decade, continuous research advances have been observed in the field of environmentally friendly polymers and polymer composites due to the dependence of polymers on fossil fuels and the sustainability issues related to plastic wastes. This research activity has become much more intense in the food packaging industry due to the high volume ...
Rafael Balart   +4 more
openaire   +3 more sources

Calcium nutrition nanoagent rescues tomatoes from mosaic virus disease by accelerating calcium transport and activating antiviral immunity

open access: yesFrontiers in Plant Science, 2022
As an essential structural, metabolic and signaling element, calcium shows low remobilization from old to young tissues in plants, restricting the nutrient-use efficiency and control efficacy against mosaic virus disease.
Shuo Yan   +7 more
doaj   +1 more source

Synthesis of Polymer-Lipid Nanoparticles by Microfluidic Focusing for siRNA Delivery

open access: yesMolecules, 2016
Polyethylenimine (PEI) as a cationic polymer is commonly used as a carrier for gene delivery. PEI-800 is less toxic than PEI-25K but it is also less efficient.
Yujing Li   +11 more
doaj   +1 more source

Supermacroporous Composite Cryogels in Biomedical Applications

open access: yesGels, 2019
Supermacroporous gels, called cryogels, are unique scaffolds that can be prepared by polymerization of monomer solution under sub-zero temperatures. They are widely used in many applications and have significant potential biomaterials, especially for ...
Yeşeren Saylan, Adil Denizli
doaj   +1 more source

Chirality analysis of helical polymers

open access: yesChemistry Teacher International, 2020
Optically active macromolecules, having a preferred- or single-handed helical conformation, play important roles in polymeric materials and in life. This article presents how helical polymers can be assessed from a view of chirality.
Nakano Tamaki   +2 more
doaj   +1 more source

Decomposition rate and biochemical fate of carbon from natural polymers and microplastics in boreal lakes

open access: yesFrontiers in Microbiology, 2022
Microbial mineralization of organic compounds is essential for carbon recycling in food webs. Microbes can decompose terrestrial recalcitrant and semi-recalcitrant polymers such as lignin and cellulose, which are precursors for humus formation.
Jussi S. Vesamäki   +5 more
doaj   +1 more source

Thermal and Structure Analysis Based on Exfoliation of Clay in Thermosensitive Polymer by in-situ Polymerization

open access: yesIndonesian Journal of Chemistry, 2019
Poly(N-vinylcaprolactam) (PNVCL) offers superior characteristics as a thermoresponsive polymer for various potential applications. An attractive procedure, namely in-situ polymerization, was used to prepare NVCL/clay nanocomposite in different clay ...
Marwah Noori Mohammed   +2 more
doaj   +1 more source

Enzymatic Platforms for Sensitive Neurotransmitter Detection

open access: yesSensors, 2020
A convenient electrochemical sensing pathway was investigated for neurotransmitter detection based on newly synthesized silole derivatives and laccase/horseradish-peroxidase-modified platinum (Pt)/gold (Au) electrodes.
Sylwia Baluta   +4 more
doaj   +1 more source

Polymers Pushing Polymers: Polymer Mixtures in Thermodynamic Equilibrium with a Pore [PDF]

open access: yesBiophysical Journal, 2012
We investigate polymer partitioning from polymer mixtures into nanometer size cavities by formulating an equation of state for a binary polymer mixture assuming that only one (smaller) of the two polymer components can penetrate the cavity. Deriving the partitioning equilibrium equations and solving them numerically allows us to introduce the concept ...
V. Adrian Parsegian   +4 more
openaire   +7 more sources

Gas-Foamed Scaffold Gradients for Combinatorial Screening in 3D

open access: yesJournal of Functional Biomaterials, 2012
Current methods for screening cell-material interactions typically utilize a two-dimensional (2D) culture format where cells are cultured on flat surfaces. However, there is a need for combinatorial and high-throughput screening methods to systematically
Joachim Kohn   +4 more
doaj   +1 more source

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