uu.seUppsala University Publications
Change search
Link to record
Permanent link

Direct link
BETA
Alternative names
Publications (10 of 46) Show all publications
Ruan, C., Strömme, M., Mihranyan, A. & Lindh, J. (2017). Favored Surface-limited Oxidation of Cellulose with Oxone® in Water. RSC Advances, 7(64), 40600-40607.
Open this publication in new window or tab >>Favored Surface-limited Oxidation of Cellulose with Oxone® in Water
2017 (English)In: RSC Advances, ISSN 2046-2069, E-ISSN 2046-2069, Vol. 7, no 64, 40600-40607 p.Article in journal (Refereed) Published
Abstract [en]

A novel method for favored primary alcohol oxidation of cellulose was developed. Cellulose pulp andCladophora nanocellulose were oxidized in a one-pot procedure by Oxone® (2KHSO5$KHSO4$K2SO4)and efficient reaction conditions were identified. The effects of the reaction on the morphology,viscosity and chemical structure of the products obtained were studied. The primary alcohol groupswere oxidized to carboxyl groups and the content of carboxyl groups was determined byconductometric titration. SEM, capillary-type viscometry and XRD were applied to characterize theproducts and to investigate the influence of oxidation. For the first time, low-cost and stable Oxone®was used as a single oxidant to oxidize cellulose into carboxyl cellulose. The oxidation is an inexpensiveand convenient process to produce carboxylic groups on the surface of the cellulose fibers and to makethe cellulose fibers charged. Particularly, this method can avoid the use of halogens and potentially toxicradicals and constitute a green route to access carboxylated cellulose. Further, sodium bromide could beused as a co-oxidant to the Oxone® and increase the carboxylic acid content by 10–20%. The Oxone®oxidation is a promising method for oxidation of cellulose and might facilitate the production of CNC.

Keyword
Cellulose, Oxone, Tempo-Mediated Oxidation, 2, 3-Dialdehyde Cellulose, Periodate-Oxidation, Chemistry, Efficient, Bromide, Delignification, Nanocellulose, Transparent, Nanofibers
National Category
Nano Technology
Research subject
Engineering Science with specialization in Nanotechnology and Functional Materials
Identifiers
urn:nbn:se:uu:diva-328237 (URN)10.1039/c7ra06141b (DOI)000408043100065 ()
Funder
Knut and Alice Wallenberg Foundation
Available from: 2017-08-21 Created: 2017-08-21 Last updated: 2018-01-16Bibliographically approved
Basu, A., Lindh, J., Ålander, E., Strömme, M. & Ferraz, N. (2017). On the use of ion-crosslinked nanocellulose hydrogels for wound healing solutions: Physicochemical properties and application-oriented biocompatibility studies. Informatics in Primary Care, 174, 299-308.
Open this publication in new window or tab >>On the use of ion-crosslinked nanocellulose hydrogels for wound healing solutions: Physicochemical properties and application-oriented biocompatibility studies
Show others...
2017 (English)In: Informatics in Primary Care, ISSN 1476-0320, E-ISSN 1475-9985, Vol. 174, 299-308 p.Article in journal (Refereed) Published
Abstract [en]

Calcium ion-crosslinked nanofibrillated cellulose (NFC) hydrogels were investigated as potential materials for wound healing dressings. The physicochemical properties of the hydrogels were examined by rheology and water retention tests. Skin cells and monocytes were selected for application-oriented bio-compatibility studies. The NFC hydrogels presented entangled fibrous networks and solid-like behavior. Water retention tests showed the material's potential to maintain a suitable moist environment for different type of wounds. The hydrogels did not affect dermal fibroblasts monolayer cultures upon directcontact, as cell monolayers remained intact after application, incubation and removal of the materials. Inflammatory response studies with blood-derived mononuclear cells revealed the inert nature of the hydrogels in terms of cytokine secretion and reactive oxygen species production. Results highlight the great potential of ion-crosslinked NFC hydrogels for the development of advanced wound dressings, where further functionalization of the material could lead to improved properties towards the healing of specific wound types.

Keyword
Nanofibrillated cellulose, Inflammation, Fibroblasts, Mononuclear cells
National Category
Nano Technology
Research subject
Engineering Science with specialization in Nanotechnology and Functional Materials
Identifiers
urn:nbn:se:uu:diva-332126 (URN)10.1016/j.carbpol.2017.06.073 (DOI)000407696800032 ()28821071 (PubMedID)
Funder
Swedish Research Council Formas
Available from: 2017-10-24 Created: 2017-10-24 Last updated: 2018-01-12Bibliographically approved
Xu, C., Ruan, C., Lindh, J., Li, Y., Hedin, N. & Strömme, M. (2017). Porous Polymers and Porous Carbons for CO2 Capture and VOC Removal. In: : . Paper presented at IUPAC 13th International Conference on Novel Materials and their Synthesis (NMS-XIII). .
Open this publication in new window or tab >>Porous Polymers and Porous Carbons for CO2 Capture and VOC Removal
Show others...
2017 (English)Conference paper, Oral presentation with published abstract (Refereed)
Abstract [en]

Porous materials have potential applications in gas capture and storage and heterogeneous catalysis.1 We have developed a series of porous polymers (PPs) and porous carbons (PCs) with high surface areas and tunable pore sizes. They were studied as potential sorbents for CO2 separation and volatile organic compounds (VOCs) removal.2

  The PPs were synthesized by Schiff base polycondensations. The sustainable PCs were synthesized from natural abundant celluloses by a physical carbonization/ activation process. All the PPs and PCs had ultramicropores and displayed relatively high CO2 uptakes (0.93-2.29 mmol/g at 0.15 bar, 2.20-5.52 mmol/g at 1 bar; 273 K) and CO2-over-N2 selectivities (31-90 for CO2/N2 mixtures with 15 vol%/85 vol% at 273 K). In addition, the ACs displayed remarkable adsorption capacity for vapors of VOCs with values up to 0.97 mmol/g at very low VOC concentrations (200 ppmv) and with ultrahigh VOC-over-N2 selectivity (9.35 × 103 at 293 K for 0.02 vol%/99.8 vol% of benzene/N2 mixture).

  The diverse synthesis routes and rich functionalities of PPs allowed further post-modification to improve their performance in CO2 capture. The PPs modified by alkyl amines induced chemisorption of CO2, which was confirmed by the study of in situ infrared (IR) and solid-state 13C NMR spectroscopy. As a result, the amine-modified PPs had a large CO2 capacity and very high CO2-over-N2 selectivity at the CO2 concentrations relevant for post-combustion capture of CO2.

National Category
Nano Technology
Research subject
Engineering Science with specialization in Nanotechnology and Functional Materials
Identifiers
urn:nbn:se:uu:diva-337482 (URN)
Conference
IUPAC 13th International Conference on Novel Materials and their Synthesis (NMS-XIII)
Available from: 2017-12-29 Created: 2017-12-29 Last updated: 2018-01-16
Ruan, C., Strömme, M. & Lindh, J. (2017). Preparation of Porous 2,3-dialdehyde Cellulose Beads Crosslinked with Chitosan and their Application in Adsorption of Congo Red Dye. Carbohydrate Polymers, 181, 200-207.
Open this publication in new window or tab >>Preparation of Porous 2,3-dialdehyde Cellulose Beads Crosslinked with Chitosan and their Application in Adsorption of Congo Red Dye
2017 (English)In: Carbohydrate Polymers, ISSN 0144-8617, E-ISSN 1879-1344, Vol. 181, 200-207 p.Article in journal (Refereed) Published
Abstract [en]

Micrometer sized 2,3-dialdehyde cellulose (DAC) beads were produced via a recently developed method relying on periodate oxidation of Cladophora nanocellulose. The produced dialdehyde groups and pristine hydroxyl groups provided the DAC beads with a vast potential for further functionalization. The sensitivity of the DAC beads to alkaline conditions, however, limits their possible functionalization and applications. Hence, alkaline-stable and porous cellulose beads were prepared via a reductive amination crosslinking reaction between 2,3-dialdehyde cellulose beads and chitosan. The produced materials were thoroughly characterized with different methods. The reaction conditions, including the amount of chitosan used, conditions for reductive amination, reaction temperature and time, were investigated and the maintained morphology of the beads after exposure to 1 M NaOH (aq.) was verified with SEM. Different washing and drying procedures were used and the results were studied by SEM and BET analysis. Furthermore, FTIR, TGA, EDX, XPS, DLS and elemental analysis were performed to characterize the properties of the prepared beads. Finally, the alkaline-stable porous chitosan cross-linked 2,3-dialdehyde cellulose beads were applied as adsorbent for the dye Congo red. The crosslinked beads displayed fast and high adsorption capacity at pH 2 and good desorption properties at pH 12, providing a promising sorption material.

Keyword
Cladophora nanocellulose, 2, 3-Dialdehyde cellulose beads Chitosan, Crosslink, Congo red dye
National Category
Nano Technology
Research subject
Engineering Science with specialization in Nanotechnology and Functional Materials
Identifiers
urn:nbn:se:uu:diva-334956 (URN)10.1016/j.carbpol.2017.10.072 (DOI)
Available from: 2017-11-29 Created: 2017-11-29 Last updated: 2017-11-30Bibliographically approved
Pan, R., Wang, Z., Sun, R., Lindh, J., Edström, K., Strömme, M. & Nyholm, L. (2017). Thickness difference induced pore structure variations in cellulosic separators for lithium-ion batteries. Cellulose (London), 24(7), 2903-2911.
Open this publication in new window or tab >>Thickness difference induced pore structure variations in cellulosic separators for lithium-ion batteries
Show others...
2017 (English)In: Cellulose (London), ISSN 0969-0239, E-ISSN 1572-882X, Vol. 24, no 7, 2903-2911 p.Article in journal (Refereed) Published
Abstract [en]

The pore structure of the separator is crucial to the performance of a lithium-battery as it affects the cell resistance. Herein, a straightforward approach to vary the pore structure of Cladophora cellulose (CC) separators is presented. It is demonstrated that the pore size and porosity of the CC separator can be increased merely by decreasing the thickness of the CC separator by using less CC in the manufacturing of the separator. As the pore size and porosity of the CC separator are increased, the mass transport through the separator is increased which decreases the electrolyte resistance in the pores of the separator. This enhances the battery performance, particularly at higher cycling rates, as is demonstrated for LiFePO4/Li half-cells. A specific capacity of around 100 mAh g-1 was hence obtained at a cycling rate of 2 C with a 10 μm thick CC separator while specific capacities of 40 and close to 0 mAh g-1 were obtained for separators with thicknesses of 20 and 40 μm, respectively. As the results also showed that a higher ionic conductivity was obtained for the 10 μm thick CC separator than for the 20 and 40 μm thick CC separators, it is clear that the different pore structure of the separators was an important factor affecting the battery performance in addition to the separator thickness. The present straightforward, yet efficient, strategy for altering the pore structure hence holds significant promise for the manufacturing of separators with improved performance, as well as for fundamental studies of the influence of the properties of the separator on the performance of lithium-ion cells.

Keyword
Cellulose, Separator, Thickness, Porous structure, Lithium-ion batteries
National Category
Nano Technology
Research subject
Engineering Science with specialization in Nanotechnology and Functional Materials
Identifiers
urn:nbn:se:uu:diva-327365 (URN)10.1007/s10570-017-1312-z (DOI)000402697200019 ()
Funder
StandUpSweGRIDS - Swedish Centre for Smart Grids and Energy StorageSwedish Foundation for Strategic Research , RMA-110012
Available from: 2017-08-15 Created: 2017-08-15 Last updated: 2017-12-08Bibliographically approved
Ruan, C., Strömme, M. & Lindh, J. (2016). A green and simple approach for one-pot preparation of an efficient palladium adsorbent based on functionalized 2,3-dialdehyde cellulose. In: : . Paper presented at 251st ACS national meeting, San Diego, Ca, USA. .
Open this publication in new window or tab >>A green and simple approach for one-pot preparation of an efficient palladium adsorbent based on functionalized 2,3-dialdehyde cellulose
2016 (English)Conference paper, Poster (with or without abstract) (Refereed)
National Category
Nano Technology
Identifiers
urn:nbn:se:uu:diva-286494 (URN)
Conference
251st ACS national meeting, San Diego, Ca, USA
Available from: 2016-04-20 Created: 2016-04-20 Last updated: 2016-11-30Bibliographically approved
Changqing, R., Strömme, M. & Lindh, J. (2016). A green and simple method for preparation of an efficient palladium adsorbent based on cysteine functionalized2,3-dialdehyde cellulose. Cellulose (London), 23(4), 2627-2638.
Open this publication in new window or tab >>A green and simple method for preparation of an efficient palladium adsorbent based on cysteine functionalized2,3-dialdehyde cellulose
2016 (English)In: Cellulose (London), ISSN 0969-0239, E-ISSN 1572-882X, Vol. 23, no 4, 2627-2638 p.Article in journal (Refereed) Published
Abstract [en]

A green and efficient adsorbent for adsorption of palladium ions was prepared from 2,3-dialdehyde cellulose (DAC) originating from nanocellulose from the green algae Cladophora. The DAC was functionalized with cysteine via reductive amination in a convenient one-pot procedure to provide the adsorbent. The adsorption properties for adsorbing palladium(II) ions, including capacity, adsorption isotherm and kinetics, were studied. The successful reductive amination of cysteine with 2,3-dialdehyde cellulose was confirmed by FT-IR, elemental analysis and XPS. The adsorbent was characterized by SEM, XRD, gas adsorption and TGA. The adsorbent had a high adsorption capacity (130 mg palladium per gram adsorbent) and enabled fast adsorption of palladium(II) ions from solution (80 % of maximum capacity reached in 2 h). Adsorbent materials suitable for both filters (fibrous) and column matrixes (spherical particles) could be obtained in an efficient manner by controlling the degree of oxidation while producing the DAC material.

Keyword
2, 3-dialdehyde cellulose, Palladium adsorption, Cellulose beads, Nanocellulose
National Category
Nano Technology
Identifiers
urn:nbn:se:uu:diva-303299 (URN)10.1007/s10570-016-0976-0 (DOI)000380089300028 ()
Available from: 2016-09-15 Created: 2016-09-15 Last updated: 2017-08-23Bibliographically approved
Rocha, I., Ferraz, N., Mihranyan, A., Strömme, M. & Lindh, J. (2016). Chemical modifications of Cladophorananocellulose to provide a non-toxicmaterial with anticoagulant properties. In: : . Paper presented at 10th World Biomaterials Congress. Montreal, Canada.
Open this publication in new window or tab >>Chemical modifications of Cladophorananocellulose to provide a non-toxicmaterial with anticoagulant properties
Show others...
2016 (English)Conference paper, Poster (with or without abstract) (Refereed)
Place, publisher, year, edition, pages
Montreal, Canada: , 2016
National Category
Nano Technology
Identifiers
urn:nbn:se:uu:diva-296229 (URN)
Conference
10th World Biomaterials Congress
Available from: 2016-06-14 Created: 2016-06-14 Last updated: 2016-11-30
Pan, R., Cheung, O., Wang, Z., Tammela, P., Huo, J., Lindh, J., . . . Nyholm, L. (2016). Mesoporous Cladophora cellulose separators for lithium-ion batteries. Journal of Power Sources, 321, 185-192.
Open this publication in new window or tab >>Mesoporous Cladophora cellulose separators for lithium-ion batteries
Show others...
2016 (English)In: Journal of Power Sources, ISSN 0378-7753, E-ISSN 1873-2755, Vol. 321, 185-192 p.Article in journal (Refereed) Published
Abstract [en]

Much effort is currently made to develop inexpensive and renewable materials which can replace the polyolefin microporous separators conventionally used in contemporary lithium-ion batteries. In the present work, it is demonstrated that mesoporous Cladophora cellulose (CC) separators constitute very promising alternatives based on their high crystallinity, good thermal stability and straightforward manufacturing. The CC separators, which are fabricated using an undemanding paper-making like process involving vacuum filtration, have a typical thickness of about 35 mu m, an average pore size of about 20 nm, a Young's modulus of 5.9 GPa and also exhibit an ionic conductivity of 0.4 mS cm(-1) after soaking with 1 M LiPF6 EC: DEC (1/1, v/v) electrolyte. The CC separators are demonstrated to be thermally stable at 150 degrees C and electrochemically inert in the potential range between 0 and 5 V vs. Li+/Li. A LiFePO4/Li cell containing a CC separator showed good cycling stability with 99.5% discharge capacity retention after 50 cycles at a rate of 0.2 C. These results indicate that the renewable CC separators are well-suited for use in high-performance lithium-ion batteries.

Keyword
Separator, Cellulose, Crystallinity, Paper-making, Lithium-ion battery, Cladophora
National Category
Inorganic Chemistry Engineering and Technology
Identifiers
urn:nbn:se:uu:diva-299548 (URN)10.1016/j.jpowsour.2016.04.115 (DOI)000377729200020 ()
Funder
Swedish Energy AgencyStandUpStiftelsen Olle Engkvist Byggmästare
Available from: 2016-07-25 Created: 2016-07-22 Last updated: 2017-12-30
Carlsson, D., Lindh, J., Strömme, M. & Malaise, J.-L. (2016). On the pore space of agarose-based chromatography media. In: : . Paper presented at 251st American Chemical Society National Meeting & Exposition, 13-17 March, 2016, San Diego, Ca, USA. .
Open this publication in new window or tab >>On the pore space of agarose-based chromatography media
2016 (English)Conference paper, Poster (with or without abstract) (Refereed)
National Category
Materials Chemistry Engineering and Technology
Identifiers
urn:nbn:se:uu:diva-286489 (URN)
Conference
251st American Chemical Society National Meeting & Exposition, 13-17 March, 2016, San Diego, Ca, USA
Available from: 2016-04-20 Created: 2016-04-20 Last updated: 2016-11-30Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0001-5196-4115

Search in DiVA

Show all publications