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Schneider, L. M., Ihrner, N., Zenkert, D. & Johansson, M. (2019). Bicontinuous Electrolytes via Thermally Initiated Polymerization for Structural Lithium Ion Batteries. ACS Applied Energy Materials, 2(6), 4362-4369
Open this publication in new window or tab >>Bicontinuous Electrolytes via Thermally Initiated Polymerization for Structural Lithium Ion Batteries
2019 (English)In: ACS Applied Energy Materials, ISSN 2574-0962, Vol. 2, no 6, p. 4362-4369Article in journal (Refereed) Published
Abstract [en]

Structural batteries (SBs) are a growing research subject worldwide. The idea is to provide massless energy by using a multifunctional material. This technology can provide a new pathway in electrification and offer different design opportunities and significant weight savings in vehicle applications. The type of SB discussed here is a multifunctional material that can carry mechanical loads and simultaneously provide an energy storage function. It is a composite material that utilizes carbon fibers (CFs) as electrodes and structural reinforcement which are embedded in a multifunctional polymer matrix (i.e., structural battery electrolyte). A feasible composite manufacturing method still needs to be developed to realize a full-cell SB. UV initiated polymerization induced phase separation (PIPS) has previously been used to make bicontinuous structural battery electrolytes (SBE) with good ionic conductivity and mechanical performance. However, UV-curing cannot be used for fabrication of a full cell SB since a full-cell is made of multiple layers of nontransparent CFs. The present paper investigates thermally initiated PIPS to prepare a bicontinuous SBE and an SB half-cell. In addition, the effect of curing temperature was examined with respect to curing performance, morphology, ionic conductivity, and mechanical and electrochemical performance. The study revealed that thermally initiated PIPS provides a robust and scalable process route to fabricate SBs. The results of this study are an important milestone in the development of SB technology as they allow for the SB fabrication for an actual application. However, other challenges still remain to be solved before this technology can be introduced into an application.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2019
Keywords
thermal polymerization, lithium ion conductivity, polymerization induced microphase separation, bicontinuous morphology, polymer electrolyte matrices
National Category
Polymer Chemistry
Identifiers
urn:nbn:se:kth:diva-255322 (URN)10.1021/acsaem.9b00563 (DOI)000473116600049 ()2-s2.0-85068010658 (Scopus ID)
Note

QC 20190805

Available from: 2019-08-05 Created: 2019-08-05 Last updated: 2019-08-05Bibliographically approved
Nameer, S., Larsen, D. & Johansson, M. (2019). Bio-based epoxy thermosets from fatty acid derivatives. Paper presented at 257th National Meeting of the American-Chemical-Society (ACS), MAR 31-APR 04, 2019, Orlando, FL. Abstracts of Papers of the American Chemical Society, 257
Open this publication in new window or tab >>Bio-based epoxy thermosets from fatty acid derivatives
2019 (English)In: Abstracts of Papers of the American Chemical Society, ISSN 0065-7727, Vol. 257Article in journal, Meeting abstract (Other academic) Published
Place, publisher, year, edition, pages
American Chemical Society (ACS), 2019
National Category
Chemical Sciences
Identifiers
urn:nbn:se:kth:diva-257664 (URN)000478861204802 ()
Conference
257th National Meeting of the American-Chemical-Society (ACS), MAR 31-APR 04, 2019, Orlando, FL
Note

QC 20190903

Available from: 2019-09-03 Created: 2019-09-03 Last updated: 2019-09-03Bibliographically approved
Nameer, S., Deltin, T., Sundell, P.-E. -. & Johansson, M. (2019). Bio-based multifunctional fatty acid methyl esters as reactive diluents in coil coatings. Progress in organic coatings, 136, Article ID 105277.
Open this publication in new window or tab >>Bio-based multifunctional fatty acid methyl esters as reactive diluents in coil coatings
2019 (English)In: Progress in organic coatings, ISSN 0300-9440, E-ISSN 1873-331X, Vol. 136, article id 105277Article in journal (Refereed) Published
Abstract [en]

The increased environmental awareness has driven academia and industry to utilize environmentally benign sources. An industrially available process that is effective in the coatings industry is the coil-coating process where sheet steel can be pre-coated. During this process volatile organic compounds (VOCs) are generated and incinerated for energy recovery. One way to minimize VOCs is to use a reactive diluent i.e. a molecule that acts both as a solvent as well as chemically react into the final coating upon curing. Fatty acid methyl esters obtained from renewable resources such as vegetable oils are suitable candidates as reactive diluents. In this paper epoxidized fatty acid methyl esters (e-FAMEs) obtained from epoxidized linseed oil where compared with fatty acid methyl esters (FAMEs) obtained from rapeseed oil as reactive diluents in coil-coating formulations. Coil-coating formulations were followed by real-time Fourier transform infrared spectroscopy (RT-FTIR) in order to evaluate the e-FAMEs or the FAMEs reactivity in the coating system. In addition, coil-coating formulation containing e-FAME or FAME where cured in a pilot scale simulated coil-coating process. Moreover, thermal properties of the final coatings were evaluated by differential scanning calorimetry (DSC).

Place, publisher, year, edition, pages
Elsevier, 2019
Keywords
Coil-coatings, Epoxidized fatty acid methyl esters, Protective coatings, Renewable resources, Vegetable oil, Chemical industry, Curing, Differential scanning calorimetry, Esters, Fourier transform infrared spectroscopy, Oilseeds, Vegetable oils, Volatile organic compounds, Coil coatings, Environmental awareness, Environmentally benign, Epoxidized linseed oil, Fatty acid methyl ester, Fatty acid methyl esters (FAMEs), Multifunctional fatty acid, Renewable resource, Fatty acids
National Category
Polymer Technologies Paper, Pulp and Fiber Technology
Research subject
Fibre and Polymer Science
Identifiers
urn:nbn:se:kth:diva-263516 (URN)10.1016/j.porgcoat.2019.105277 (DOI)000490030200079 ()2-s2.0-85070793022 (Scopus ID)
Note

QC 20191130

Available from: 2019-11-29 Created: 2019-11-29 Last updated: 2019-11-29Bibliographically approved
Zenkert, D., Lindbergh, G. & Johansson, M. (2019). Carbon fibre composites as batteries, sensors, actuators and energy harvesting. In: International Conference on Composite Materials ICCM22: . Paper presented at International Conference on Composite Materials ICCM22.
Open this publication in new window or tab >>Carbon fibre composites as batteries, sensors, actuators and energy harvesting
2019 (English)In: International Conference on Composite Materials ICCM22, 2019Conference paper, Published paper (Other academic)
Abstract [en]

Reduced mass for improvements in system performance has become a priority for a wide range of applications that requires electrical energy and includes load-bearing components. Use of lightweight materials has been identified as key for successful electrification of future transport solutions. Structure, energy storage and energy distribution are usually subsystems with the highest mass contributions but energy storage and energy distribution devices are structurally parasitic. One creative path forward is to develop composite materials that perform several functions at the same time – multifunctional materials. Combining functions in a single material entity will enable substantial weight savings on the systems level.

One such concept is a structural battery, a material that simultaneously carry load and stores energy like a battery. Structural batteries employ carbon fibres as structural reinforcement and negative electrode and can also be used as current collectors to save additional weight.

A number of new physical phenomena when using carbon fibres as battery electrodes have been found which allows for further multi-functionality. These are all based on the fact that carbon fibres intercalated lithium ions as an electrode material. The ion intercalation creates a reversible longitudinal expansion of the carbon fibres which could be used for actuation and morphing. A piezo electrochemical effect couples the electrical potential of the fibre to the strain acting on it, which can be used for sensing purposes. By combining the expansion and the piezo electrochemical effect one can convert mechanical energy to electrochemical energy, providing an energy harvesting function. The long-term vision of this work is to create a composite material that carries load, stores electrical energy, senses its own state, morphs and harvests energy.

National Category
Composite Science and Engineering
Identifiers
urn:nbn:se:kth:diva-257966 (URN)
Conference
International Conference on Composite Materials ICCM22
Funder
Swedish Research Council, 2017-03898EU, Horizon 2020, 738085
Note

QC 20191015

Available from: 2019-09-09 Created: 2019-09-09 Last updated: 2019-10-16Bibliographically approved
Brännström, S., Johansson, M. & Malmström, E. (2019). Enzymatically Synthesized Vinyl Ether-Disulfide Monomer Enablingan Orthogonal Combination of Free Radical and Cationic Chemistry toward Sustainable Functional Networks. Biomacromolecules, 20(3), 1308-1316, Article ID 10.1021/acs.biomac.8b01710.
Open this publication in new window or tab >>Enzymatically Synthesized Vinyl Ether-Disulfide Monomer Enablingan Orthogonal Combination of Free Radical and Cationic Chemistry toward Sustainable Functional Networks
2019 (English)In: Biomacromolecules, ISSN 1525-7797, E-ISSN 1526-4602, Vol. 20, no 3, p. 1308-1316, article id 10.1021/acs.biomac.8b01710Article in journal (Refereed) Published
Abstract [en]

This work demonstrates a versatile and environmentally friendly route for the development of new orthogonal monomers that can be used for postfunctionalizable polymer networks. A monomer containing both vinyl ether (VE) and cyclic disulfide moieties was synthesized via enzyme catalysis under benign reaction conditions. The bifunctional monomer could be polymerized to form macromolecues with differing architectures by the use of either cationic or radical photo polymerization. When cationic polymerization was performed, a linear polymer was obtained with pendant disulfide units in the side chain, whereas in the presence of radical initiator, the VE reacted with the disulfide to yield a branched structure. The monomer was thereafter used to design networks that could be postfunctionalized; the monomer was cross-linked with cationic initiation together with a difunctional VE oligomer and after cross-linking the unreacted disulfides were coupled to RhodamineVE by radical UV-initiation.

National Category
Polymer Chemistry
Identifiers
urn:nbn:se:kth:diva-249949 (URN)10.1021/acs.biomac.8b01710 (DOI)000461270500018 ()
Note

QC 20190425

Available from: 2019-04-23 Created: 2019-04-23 Last updated: 2019-11-29Bibliographically approved
Finnveden, M., Hendil-Forssell, P., Claudino, M., Johansson, M. & Martinelle, M. (2019). Lipase-Catalyzed Synthesis of Renewable Plant Oil-Based Polyamides.. Polymers, 11(11), Article ID 1730.
Open this publication in new window or tab >>Lipase-Catalyzed Synthesis of Renewable Plant Oil-Based Polyamides.
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2019 (English)In: Polymers, ISSN 2073-4360, E-ISSN 2073-4360, Vol. 11, no 11, article id 1730Article in journal (Refereed) Published
Abstract [en]

Enzyme catalyzed synthesis of renewable polyamides was investigated using Candida antarctica lipase B. A fatty acid-derived AB-type functional monomer, having one amine and one methyl ester functionality, was homopolymerized at 80 and 140 °C. Additionally, the organobase 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD) was used as a catalyst. The results from the two catalysts were comparable. However, the amount of lipase added was 1.2 × 103 times lower, showing that the lipase was a more efficient catalyst for this system as compared to TBD. Moreover, the AB-type monomer was copolymerized with 1,12-diaminododecane to synthesize oligoamides of two different lengths.

Place, publisher, year, edition, pages
MDPI, 2019
Keywords
Candida antarctica lipase B, bio-based polyamides, enzymatic polymerization
National Category
Biocatalysis and Enzyme Technology
Research subject
Biotechnology
Identifiers
urn:nbn:se:kth:diva-264924 (URN)10.3390/polym11111730 (DOI)31652736 (PubMedID)2-s2.0-85075579461 (Scopus ID)
Funder
Swedish Research Council Formas, 211-2013-70EU, FP7, Seventh Framework Programme, 266025
Note

QC 20191205

Available from: 2019-12-05 Created: 2019-12-05 Last updated: 2019-12-06Bibliographically approved
Li, G., Dobryden, I., Salazar-Sandoval, E. J., Johansson, M. & Claesson, P. M. (2019). Load-dependent surface nanomechanical properties of poly-HEMA hydrogels in aqueous medium. Soft Matter, 15(38), 7704-7714
Open this publication in new window or tab >>Load-dependent surface nanomechanical properties of poly-HEMA hydrogels in aqueous medium
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2019 (English)In: Soft Matter, ISSN 1744-683X, E-ISSN 1744-6848, Vol. 15, no 38, p. 7704-7714Article in journal (Refereed) Published
Abstract [en]

The mechanical properties of hydrogels are of importance in many applications, including scaffolds and drug delivery vehicles where the release of drugs is controlled by water transport. While the macroscopic mechanical properties of hydrogels have been reported frequently, there are less studies devoted to the equally important nanomechanical response to local load and shear. Scanning probe methods offer the possibility to gain insight on surface nanomechanical properties with high spatial resolution, and thereby provide fundamental insights on local material property variations. In this work, we investigate the local response to load and shear of poly(2-hydroxyethyl methacrylate) hydrogels with two different cross-linking densities submerged in aqueous solution. The response of the hydrogels to purely normal loads, as well as the combined action of load and shear, was found to be complex due to viscoelastic effects. Our results show that the surface stiffness of the hydrogel samples increased with increasing load, while the tip-hydrogel adhesion was strongly affected by the load only when the cross-linking density was low. The combined action of load and shear results in the formation of a temporary sub-micrometer hill in front of the laterally moving tip. As the tip pushes against such hills, a pronounced stick-slip effect is observed for the hydrogel with low cross-linking density. No plastic deformation or permanent wear scar was found under our experimental conditions.

Place, publisher, year, edition, pages
ROYAL SOC CHEMISTRY, 2019
National Category
Chemical Sciences
Identifiers
urn:nbn:se:kth:diva-262771 (URN)10.1039/c9sm01113g (DOI)000488484100015 ()31508653 (PubMedID)2-s2.0-85072848939 (Scopus ID)
Note

QC 20191022

Available from: 2019-10-22 Created: 2019-10-22 Last updated: 2019-10-22Bibliographically approved
Träger, A., Klein, G., Carrick, C., Pettersson, T., Johansson, M., Wågberg, L., . . . Carlmark, A. (2019). Macroscopic cellulose probes for the measurement of polymer grafted surfaces. Cellulose (London), 26(3), 1467-1477
Open this publication in new window or tab >>Macroscopic cellulose probes for the measurement of polymer grafted surfaces
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2019 (English)In: Cellulose (London), ISSN 0969-0239, E-ISSN 1572-882X, Vol. 26, no 3, p. 1467-1477Article in journal (Refereed) Published
Abstract [en]

A synthesis protocol was identified to produce covalent grafting of poly(dimethyl siloxane) from cellulose, based on prior studies of analogous ring opening polymerizations. Following this polymer modification of cellulose, the contact adhesion was anticipated to be modified and varied as a function of the polymer molecular mass. The synthetic details were optimized for a filter paper surface before grafting the polymer from bulk cellulose spheres. The adhesion of the unmodified and grafted, bulk cellulose spheres were evaluated using the Johnson-Kendall-Roberts (JKR) theory with a custom build contact adhesion testing setup. We report the first example of grafting poly(dimethyl siloxane) directly from bulk cellulose using ring opening polymerization. For short grafting lengths, both the JKR work of adhesion and the adhesion energy at the critical energy release rate (G(c)) were comparable to unmodified cellulose beads. When polymer grafting lengths were extended sufficiently where chain entanglements occur, both the JKR work of adhesion and G(c) were increased by as much as 190%. Given the multitude of options available to graft polymers from cellulose, this study shows the potential to use this type of cellulose spheres to study the interaction between different polymer surfaces in a controlled manner. [GRAPHICS] .

Place, publisher, year, edition, pages
SPRINGER, 2019
Keywords
Grafted polymer, Cellulose, Contact mechanics, Adhesion, Johnson-Kendall-Roberts theory
National Category
Chemical Sciences
Identifiers
urn:nbn:se:kth:diva-247840 (URN)10.1007/s10570-018-2196-2 (DOI)000460617900004 ()
Note

QC 20190326

Available from: 2019-03-26 Created: 2019-03-26 Last updated: 2019-10-29Bibliographically approved
Jawerth, M., Johansson, M. & Lawoko, M. (2019). Renewable thermosetting resins based on refined technical lignin: fractionation, modification and valorization. Paper presented at National Meeting of the American-Chemical-Society (ACS), MAR 31-APR 04, 2019, Orlando, FL. Abstracts of Papers of the American Chemical Society, 257
Open this publication in new window or tab >>Renewable thermosetting resins based on refined technical lignin: fractionation, modification and valorization
2019 (English)In: Abstracts of Papers of the American Chemical Society, ISSN 0065-7727, Vol. 257Article in journal, Meeting abstract (Other academic) Published
Place, publisher, year, edition, pages
AMER CHEMICAL SOC, 2019
National Category
Paper, Pulp and Fiber Technology
Identifiers
urn:nbn:se:kth:diva-257603 (URN)000478860503063 ()
Conference
National Meeting of the American-Chemical-Society (ACS), MAR 31-APR 04, 2019, Orlando, FL
Note

QC 20190919

Available from: 2019-09-19 Created: 2019-09-19 Last updated: 2019-09-19Bibliographically approved
Olsen, P., Jawerth, M., Lawoko, M., Johansson, M. & Berglund, L. (2019). Transforming technical lignins to structurally defined star-copolymers under ambient conditions. Green Chemistry, 21(9), 2478-2486
Open this publication in new window or tab >>Transforming technical lignins to structurally defined star-copolymers under ambient conditions
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2019 (English)In: Green Chemistry, ISSN 1463-9262, E-ISSN 1463-9270, Vol. 21, no 9, p. 2478-2486Article in journal (Refereed) Published
Abstract [en]

Transforming biomass derived components to materials with controlled and predictable properties is a major challenge. Current work describes the controlled synthesis of starcopolymers with functional and degradable arms from the Lignoboost (R) process. Macromolecular control is achieved by combining lignin fractionation and characterization with ring-opening copolymerization (ROCP). The cyclic monomers used are epsilon-caprolactone (epsilon CL) and a functional carbonate monomer, 2-allyloxymethyl-2-ethyltrimethylene carbonate (AOMEC). The synthesis is performed at ambient temperature, under bulk conditions, in an open flask, and the graft composition and allyl functionality distribution are controlled by the copolymerization kinetics. Emphasis is placed on understanding the initiation efficiency, structural changes to the lignin backbone and the final macromolecular architecture. The present approach provides a green, scalable and cost effective protocol to create well-defined functional macromolecules from technical lignins.

National Category
Polymer Chemistry
Identifiers
urn:nbn:se:kth:diva-252978 (URN)10.1039/c9gc00835g (DOI)000468627300033 ()2-s2.0-85065578205 (Scopus ID)
Note

QC 20190814

Available from: 2019-08-14 Created: 2019-08-14 Last updated: 2019-12-11Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0003-3201-5138

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