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UV Induced Cross-li...
UV Induced Cross-linking of Starch Modified with Glycidyl Methacrylate
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- Hedin, Jesper, 1980 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Östlund, Åsa, 1977 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Nydén, Magnus, 1970 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- Elsevier BV, 2009
- 2009
- Engelska.
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Ingår i: Carbohydrate Polymers. - : Elsevier BV. - 0144-8617. ; 79:3, s. 606-613
- Relaterad länk:
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http://dx.doi.org/10...
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https://research.cha...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- A new way to substitute cornstarch with glycidyl methacrylate (GMA) monomers is presented. This synthetic modification, carried out in DMSO, resulted in a DOS of 0.08. By exposing a water solution with modified starch and potassium persulfate (KPS), a radical initiator, to UV-light a free radical vinyl polymerization reaction is initiated making the starch solution chemically cross-link into a gel. The GMA modification increased the hydrophobicity of the polymer making it less water-soluble, increasing the adsorption tendency to a hydrophobic surface as seen in quartz crystal microbalance with dissipation monitoring (QCM-D) studies. The surface cross-linking process of the modified starch showed that after cross-linking the solubility of the polymer decreased resulting in a stronger adsorbed polymer to the surface compared to the non-modified starch. This proves that even though it is generally believed to be more difficult to cross-link polymers at surfaces this particular modification allowed for near complete cross-linking as suggested by the QCM-D data.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering (hsv//eng)
Nyckelord
- Starch
- Hydrogel
- QCM-D
- GMA
- UV
- Cross-linking
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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