WebMar 9, 2024 · In this work, we propose long-circulating, pH-sensitive nanoparticles composed solely of cellular membrane-disruptive molecules as a new approach for … Web7 rows · Jul 22, 2024 · This paper explores different pH detection methods and materials including: Litmus paper, pH ...
pH-Sensitive nanoscale materials as robust drug delivery systems …
WebpH-Sensitive Hydrogel Dominic S. Peterson* Materials Science & Technology Division, Los Alamos National Laboratory, Los Alamos, NM, USA Synonyms pH control device; pH sensor; pH-sensitive valve; Valve Definition A pH-sensitive hydrogel is a gel structure that is sensitive to changes in pH. Most commonly, the pH sensitive or pH responsive polymers are materials which will respond to the changes in the pH of the surrounding medium by varying their dimensions. Materials may swell, collapse, or change depending on the pH of their environment. This behavior is exhibited due to the presence of certain functional … See more pH sensitive polymers can be broken into two categories: those with acidic groups (such as -COOH and -SO3H) and those with basic groups (-NH2). The mechanism of response is the same for both, only the stimulus varies. The … See more pH sensitive polymers have been created with linear block copolymer, star, branched, dendrimer, brush, and comb architectures. Polymers of different architectures will self-assemble into different structures. This self-assembly can occur due to the … See more pH sensitive polymers can be synthesized using several common polymerization methods. Functional groups may need to be protected so that they do not react depending on the type of polymerization. The masking can be removed after polymerization so … See more Purification and separation pH sensitive polymers have been considered for use in membranes. A change in pH could change the ability of the polymer to let … See more Often, the response to different pH values is swelling or deswelling. For example, polyacids release protons to become negatively charged at high pH. Since polymer chains are often in close proximity to other parts of the same chain or to other chains, … See more Contact angle Several methods can be used to measure the contact angle of a water drop on the surface of a polymer. The contact angle value is used to quantify wettability or hydrophobicity of the polymer. Degree of swelling See more chili ramen noodles add ins
pH-Responsive polymers - Polymer Chemistry (RSC …
WebNov 30, 2024 · As many diseased tissues are feathered with acidic characteristics microenvironment, pH-sensitive biomaterials for drug delivery present great promise for the purpose, which could protect the... WebFeb 23, 2024 · The pH-sensitive hydrogels are a unique class of three-dimensional hydrophilic polymers containing ionic pendant groups on their polymeric network. In response to the external pH variation, these materials span the volume of an aqueous/biological solution and swell without dissolution. WebJul 2, 2024 · Smart or stimuli-responsive materials are an emerging class of materials used for tissue engineering and drug delivery. A variety of stimuli (including temperature, pH, redox-state, light, and magnet fields) are being investigated for their potential to change a material’s properties, interactions, structure, and/or dimensions. The specificity of stimuli … grabgiftclub