Results 61 to 70 of about 61,010 (276)

TGA/FTIR: An Extremely Useful Technique for Studying Polymer Degradation [PDF]

open access: yes, 1999
Thermogravimetric analysis coupled to Fourier transform infrared spectroscopy, TGA/FTIR, has been used to probe the degradation of several polymeric systems.
Wilkie, Charles A.
core   +1 more source

Extracting chemical energy by growing disorder: Efficiency at maximum power [PDF]

open access: yes, 2009
We consider the efficiency of chemical energy extraction from the environment by the growth of a copolymer made of two constituent units in the entropy-driven regime.
Christian Van den Broeck   +4 more
core   +3 more sources

Controlling Intestinal Organoid Polarity using Synthetic Dynamic Hydrogels Decorated with Laminin‐Derived IKVAV Peptides

open access: yesAdvanced Healthcare Materials, EarlyView.
Design rules are presented to control intestinal organoid polarity in fully synthetic hydrogels. The laminin‐derived IKVAV sequence is crucial to obtain correct intestinal organoid polarity. Increasing hydrogel dynamics further supports the growth of correctly polarized intestinal organoids, while a bulk level of stiffness (G’ ≈ 0.7 kPa) is crucial to ...
Laura Rijns   +10 more
wiley   +1 more source

Effect of Acid Comonomer on the Morphology, Thermal, Mechanical and Solvent Stability Properties of Electrospun Membranes of Poly(Acrylonitrile-Co-Methacrylic Acid) [PDF]

open access: yesMaterials Research
This study assessed the morphology and thermal, mechanical, and chemical properties of electrospun membranes made of acrylonitrile-methacrylic acid copolymers (PANCMAA).
Luiz Guilherme Abreu de Paula   +3 more
doaj   +1 more source

Organic crystalline polymers: structural properties and way to synthesis under high pressure

open access: yes, 2018
We consider different structures, which can be obtained by polymerization of aromatic organic molecules under high pressures. These 2D and 3D covalently bonded organic polymers and their functionalization can pave the way to production of energy storage ...
Brazhkin, V. V.   +4 more
core   +1 more source

New immunolatex spheres: visual markers of antigens on lymphocytes for scanning electron microscopy [PDF]

open access: yes, 1975
New immunochemical reagents consisting of antibodies bound to small latex spheres were used as visual markers for the detection and localization of cell surface antigens by scanning electron microscopy.
Dreyer, William J.   +3 more
core   +2 more sources

Metronidazole‐Loaded Cyclodextrin Nanogels for Antibacterial Therapy and Microbiota Regulation in Periodontitis

open access: yesAdvanced Healthcare Materials, EarlyView.
A methacrylamide β‐cyclodextrin‐based nanogel (MACD nGel) is developed to load the antimicrobial drug Metronidazole (MNZ) for topical delivery for the treatment of periodontitis. It is demonstrated that cyclodextrin nanogel (nGel) loaded with metronidazole provides an efficient drug delivery route but also has potential clinical applications and offers
Yanjing Ji   +8 more
wiley   +1 more source

Synthesis and properties of a new AB-cross-linked copolymer membrane system [PDF]

open access: yes, 1993
The alcohol permeability and permselectivity properties as well as the morphology of membranes made of a newly developed AB-cross-linked copolymer system composed of elastomeric and glassy components were investigated.
Kerres, J.A., Strathmann, H.
core   +2 more sources

Interfacial Bioengineering of Dynamic Networks Hybrid Hydrogel for Programmed Intervention in Oral Precancerous Epithelial States

open access: yesAdvanced Healthcare Materials, EarlyView.
This study develops a dual‐bioinspired hydrogel, MSA@PGel (macrophage membrane‐coated and salvianolic acid B/5‐aminolevulinic acid co‐loaded liposomes embedded in a polydopamine‐based gel), that integrates macrophage membrane‐mediated active targeting and mussel‐inspired wet adhesion for programmed intervention in oral precancerous lesions.
Xiaoxian Zhao   +8 more
wiley   +1 more source

Dual‐Functional Polyphosphoesters for Gene Delivery: Synergistic Effects of Guanidinium and Hydrophobic Side Chains in Degradable Polymers

open access: yesAdvanced Healthcare Materials, EarlyView.
This study presents guanidinium‐ and indole‐functionalized polyphosphoesters as degradable, non‐viral gene delivery vectors. Through precise tuning of charge density and hydrophobicity, these polymers form stable polyplexes with low toxicity. Remarkably, minor structural changes yield up to 200‐fold differences in transfection efficiency, highlighting ...
Markus Kötzsche   +8 more
wiley   +1 more source

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