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- PH-sensitive_polymers abstract "PH-sensitive polymers 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. Such materials increase its size (swell) or collapse depending on the pH of their environment. This behaviour is exhibited due to the presence of certain functional groups in the polymer chain.pH sensitive polymerThere are two kinds of pH sensitive materials: one which have acidic group (-COOH, -SO3H) and swell in basic pH, and others which have basic groups (-NH2) and swell in acidic pH. Polyacrylic acid is an example of the former and Chitosan is an example of the latter. The mechanism of response is same for both, just the stimuli vary.The response is triggered due to the presence of ionisable functional groups (like -COOH, -NH2) which get ionized and acquire a charge (+/-) in a certain pH. The polymer chains now have many similarly charged groups which causes repulsion and hence the material expands in dimensions. The opposite happens when pH changes and the functional groups lose their charge hence the repulsion is gone and the material collapses back. These materials are being extensively used in controlled drug delivery systems, biomimetics and responsive plasmonics.".
- PH-sensitive_polymers thumbnail PH_sensitive_polymer_swelling-collapse_mechanism.jpg?width=300.
- PH-sensitive_polymers wikiPageID "9387972".
- PH-sensitive_polymers wikiPageRevisionID "588047669".
- PH-sensitive_polymers hasPhotoCollection PH-sensitive_polymers.
- PH-sensitive_polymers subject Category:Smart_materials.
- PH-sensitive_polymers type Abstraction100002137.
- PH-sensitive_polymers type Material114580897.
- PH-sensitive_polymers type Matter100020827.
- PH-sensitive_polymers type Part113809207.
- PH-sensitive_polymers type PhysicalEntity100001930.
- PH-sensitive_polymers type Relation100031921.
- PH-sensitive_polymers type SmartMaterials.
- PH-sensitive_polymers type Substance100019613.
- PH-sensitive_polymers comment "PH-sensitive polymers 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. Such materials increase its size (swell) or collapse depending on the pH of their environment.".
- PH-sensitive_polymers label "PH-sensitive polymers".
- PH-sensitive_polymers sameAs m.0286wdh.
- PH-sensitive_polymers sameAs Q7119202.
- PH-sensitive_polymers sameAs Q7119202.
- PH-sensitive_polymers sameAs PH-sensitive_polymers.
- PH-sensitive_polymers wasDerivedFrom PH-sensitive_polymers?oldid=588047669.
- PH-sensitive_polymers depiction PH_sensitive_polymer_swelling-collapse_mechanism.jpg.
- PH-sensitive_polymers isPrimaryTopicOf PH-sensitive_polymers.
