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Physical Tuning of ...
Physical Tuning of Cellulose-Polymer Interactions Utilizing Cationic Block Copolymers Based on PCL and Quaternized PDMAEMA
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- Bruce, Carl (författare)
- KTH,Ytbehandlingsteknik,VinnExcellens Centrum BiMaC Innovation
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- Utsel, Simon (författare)
- KTH,Fiberteknologi,VinnExcellens Centrum BiMaC Innovation
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- Pettersson, Torbjörn (författare)
- KTH,Fiberteknologi,VinnExcellens Centrum BiMaC Innovation
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- Carlmark, Anna (författare)
- KTH,Ytbehandlingsteknik,VinnExcellens Centrum BiMaC Innovation
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- Fogelström, Linda (författare)
- KTH,Ytbehandlingsteknik,VinnExcellens Centrum BiMaC Innovation,Wallenberg Wood Science Center
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- Wågberg, Lars (författare)
- KTH,Fiberteknologi,VinnExcellens Centrum BiMaC Innovation,Wallenberg Wood Science Center
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- Malmström, Eva (författare)
- KTH,Ytbehandlingsteknik,VinnExcellens Centrum BiMaC Innovation,Wallenberg Wood Science Center
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(creator_code:org_t)
- 2013
- 2013
- Engelska.
- Relaterad länk:
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https://www.tappinan...
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https://urn.kb.se/re...
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Abstract
Ämnesord
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- In this study, the aim was to prepare and evaluate a block copolymer that can be used as a compatabilizer in cellulose fiber-reinforced biocomposites. It as an amphiphilic block copolymer consisting of poly(ε-caprolactone) (PCL), made with ring-opening polymerization (ROP), and a shorter segment of poly(2-(dimethylamino)ethyl methacrylate) (PDMAEMA) that was synthesized with atom transfer radical polymerization (ATRP). The PDMAEMA-part was made in one single length, while the PCL-part was varied in three different lengths; in total were three block copolymers prepared. In the last step of the synthesis, the PDMAEMA-part was quaternized that turns it into a cationically charged chain – a polyelectrolyte. The block copolymers were then able to form cationic micelles in water, from where they can adsorb, under mild conditions, to anionic surfaces such as silicon oxide and cellulose-model surfaces. This provides the surface with a more hydrophobic character shown with contact angle measurements. Finally, with atomic force microscopy (AFM) force measurements, it was demonstrated that there is a clear entanglement behavior obtained between the block copolymers and a PCL surface at about 60 °C, which is of importance for the information regarding the adhesive interface in a future biocomposite.
Ämnesord
- NATURVETENSKAP -- Kemi -- Polymerkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Polymer Chemistry (hsv//eng)
Publikations- och innehållstyp
- ref (ämneskategori)
- kon (ämneskategori)