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Physical Tuning of Cellulose-Polymer Interactions Utilizing Cationic Block Copolymers Based on PCL and Quaternized PDMAEMA
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology, Coating Technology. KTH, School of Engineering Sciences (SCI), Centres, VinnExcellence Center BiMaC Innovation.
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology, Fibre Technology. KTH, School of Engineering Sciences (SCI), Centres, VinnExcellence Center BiMaC Innovation.
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology, Fibre Technology. KTH, School of Engineering Sciences (SCI), Centres, VinnExcellence Center BiMaC Innovation.ORCID iD: 0000-0002-5444-7276
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology, Coating Technology. KTH, School of Engineering Sciences (SCI), Centres, VinnExcellence Center BiMaC Innovation.ORCID iD: 0000-0002-8194-0058
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2013 (English)Conference paper, Poster (with or without abstract) (Refereed)
Abstract [en]

In this study, the aim was to prepare and evaluate a block copolymer that can be used as a compatibilizer in cellulose fiber-reinforced biocomposites. It is an amphiphilic block copolymer consisting of poly(ε-caprolactone) (PCL), prepared with  ring-opening polymerization (ROP)1, and a shorter segment of poly(2-(dimethylamino)ethyl methacrylate) (PDMAEMA) synthesized with atom transfer radical polymerization (ATRP)2. The PDMAEMA-part was prepared in one single length, while the PCL-part was varied in three different lengths. In the last synthesis step the PDMAEMA-part was quaternized, turning 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. A similar concept has been investigated earlier in a system fully prepared with ATRP3. Additionally, physical adsorption of micelles is a milder approach of attaching a polymer to a cellulose surface compared to more traditional covalent attachment4, making it an interesting option to use in industry. After adsorption, the surface had a more hydrophobic character shown with contact angle measurements, and with 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.

Place, publisher, year, edition, pages
2013.
National Category
Polymer Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-129717OAI: oai:DiVA.org:kth-129717DiVA: diva2:653289
Conference
APME2013 IUPAC 10th International Conference on Advanced Polymers via Macromolecular Engineering; Durham, UK, 18-22 August, 2013
Note

QC 20140327

Available from: 2013-10-03 Created: 2013-10-03 Last updated: 2014-03-27Bibliographically approved

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Pettersson, TorbjörnCarlmark, AnnaFogelström, LindaWågberg, LarsMalmström, Eva

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Bruce, CarlUtsel, SimonPettersson, TorbjörnCarlmark, AnnaFogelström, LindaWågberg, LarsMalmström, Eva
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Coating TechnologyVinnExcellence Center BiMaC InnovationFibre TechnologyWallenberg Wood Science Center
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