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Colloid and Polymer Science
Erschienen in: Colloid and Polymer Science 4/2017

06.03.2017 | Original Contribution

Tuning the morphology, network structure, and degradation of thermo-sensitive microgels by controlled addition of degradable cross-linker

verfasst von: Ruiguang Cui, Zhijun Zhang, Jingjing Nie, Binyang Du

Erschienen in: Colloid and Polymer Science | Ausgabe 4/2017

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Abstract

Thermo-sensitive degradable poly(N-isopropylacrylamide) (PNIPAm)-based microgels were prepared by surfactant-free emulsion polymerization with a redox initiator pair of potassium persulfate (KPS) and N,N,N′,N′-tetramethylethylenediamine at 50 °C. NIPAm, sodium 2-acrylamido-2-methyl-1-propanesulfonate (AMPS-Na), and N,N′-bis(acryloyl)cystamine (BAC) were used as main monomer, anionic comonomer, and degradable cross-linker, respectively. It was found that the morphology and network structure of the resultant microgels could be tuned via the controlled addition of BAC and AMPS-Na, which, in turn, strongly affected the corresponding thermo-sensitivity, stability, and degradation behavior of the microgels. The inhomogeneous network structures of the microgels could be improved by increasing the time period t BAC between KPS initiation and the addition of BAC. The morphology of microgels changed from spherical into hollow interior spherical morphology. The stability of the microgels in physiological condition could be enhanced by the controlled addition of comonomer AMPS-Na. The extent of microgel degradation increased with increasing t BAC.
Vorheriger Artikel Adhesive and self-healing soft gel based on metal-coordinated imidazole-containing polyaspartamide
Nächster Artikel Fabrication of amino-containing hollow polymer latex and its composite with inorganic nanoparticles

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Metadaten
Titel
Tuning the morphology, network structure, and degradation of thermo-sensitive microgels by controlled addition of degradable cross-linker
verfasst von
Ruiguang Cui
Zhijun Zhang
Jingjing Nie
Binyang Du
Publikationsdatum
06.03.2017
Verlag
Springer Berlin Heidelberg
Erschienen in
Colloid and Polymer Science / Ausgabe 4/2017
Print ISSN: 0303-402X
Elektronische ISSN: 1435-1536
DOI
https://doi.org/10.1007/s00396-017-4056-2

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