A5081949115- Advanced Cellulose Research Studies
- Lignin and Wood Chemistry
- biodegradable polymer synthesis and properties
- Biofuel production and bioconversion
- Nanocomposite Films for Food Packaging
- Natural Fiber Reinforced Composites
- Advanced biosensing and bioanalysis techniques
- DNA and Nucleic Acid Chemistry
- Advanced Radiotherapy Techniques
- Metal complexes synthesis and properties
- Fullerene Chemistry and Applications
- Polysaccharides and Plant Cell Walls
- Lung Cancer Diagnosis and Treatment
- Asymmetric Synthesis and Catalysis
- Electrospun Nanofibers in Biomedical Applications
- Graphene research and applications
- Material Properties and Processing
- Click Chemistry and Applications
- Breast Cancer Treatment Studies
- Chemical Synthesis and Reactions
- Enzyme-mediated dye degradation
- Chemical Synthesis and Analysis
- Enzyme Catalysis and Immobilization
- Glutathione Transferases and Polymorphisms
- Cancer Treatment and Pharmacology
Wallenberg Wood Science Center
2014-2025
Chalmers University of Technology
2016-2025
Aalto University
2023
Rigshospitalet
2013-2019
Copenhagen University Hospital
2018
University of Gothenburg
2010-2018
KTH Royal Institute of Technology
2014-2017
Division of Chemistry
2013
AstraZeneca (Sweden)
2010
University of Zagreb
2009
The surface of cellulose nanocrystals, prepared by sulfuric acid hydrolysis cotton, was rendered cationic through a reaction with epoxypropyltrimethylammonium chloride. resultant nanocrystal suspensions were characterized ζ-potential, conductometric titration and polarized light microscopy. Atomic force microscopy (AFM) showed no change in the size or shape but functionalization process reversed charge led to reduction total density. These modifications stable aqueous nanocrystalline...
T. Andersson, K. Nilsson, M. Sundahl, G. Westman and O. Wennerström, J. Chem. Soc., Commun., 1992, 604 DOI: 10.1039/C39920000604
The rheological properties of aqueous suspensions based on three different nanocelluloses were compared. One system was obtained via acid hydrolysis (thus yielding crystalline nanocellulose, CNC) and the other two from mechanical shearing, but origins subjected to pretreatments. Of latter two, one considered be a rather typical cellulose nanofibril (CNF) suspension whereas kind intermediate between CNF CNC. All nanocellulose elements differed in dimensions as evident transmission electron...
Journal Article Sector Resection With or Without Postoperative Radiotherapy for Stage I Breast Cancer: Five-Year Results of a Randomized Trial Get access G. Liljegren, Liljegren Department Surgery Search other works by this author on: Oxford Academic PubMed Google Scholar L. Holmberg, Holmberg and Cancer Epidemiology Unit Correspondence to : Lars M.D., Surgery, University Hospital, S-751 85 Uppsala, Sweden. H.-O. Adami, Adami Unit, Uppsala; Epidemiology, Harvard School Public HealthBoston,...
The cell wall polysaccharide ulvan was isolated from two species of the seaweed Ulva collected along Swedish west coast. Acidic extraction benchmarked against hot water with enzymatic purification and commercial ulvan. Extracted contained 11-18 % g/g ash, some protein (up to 1.3 g N/g) but minimal colored impurities. ulvans had high molecular weights (660,000-760,000 g/mol) were composed 77-79 carbohydrates, mainly rhamnose, xylose, glucose, glucuronic acid, iduronic acid. protocol source...
A two-step viable synthetic approach for quick and energy-efficient acid-based charring is described here to fabricate self-passivated fluorescent water-soluble CD (wsCD) from sustainable microcrystalline cellulose (MCC) materials. The aqueous solution of wsCD exhibits blue emission under UV-light illumination shows a fluorescence quantum yield ∼6%. are used the selective sensing ofloxacin (OFLX) among four tested antibiotics fluoroquinolone class, namely, ciprofloxacin (CPLX), (OFLX),...
Abstract The glass transition temperatures ( T g ) of native, residual, and technical lignins are important to lignocellulose pulping, pulp processing side stream utilization; however, how the structural changes from native residual lignin influences has proven difficult elucidate. Since macromolecules is greatly influenced by molecular weight, low-molecular-weight fractions, such as milled wood (MWL), poor representatives in cell wall. To circumvent this problem, both high yield purity were...
The oxidation of cellulose to dialdehyde (DAC) is a process that has received increased interest during recent years. Herein, kinetic modeling the reaction with sodium periodate as an oxidizing agent was performed quantify rate-limiting steps and overall kinetics reaction. Considering pseudo-first-order reaction, general rate expression derived elucidate impact pH, concentration, temperature on concurrent formation degradation products. Experimental concentration profiles were utilized...
Two-dimensional (2D) layered materials like graphene, transition-metal dichalcogenides (TMDs), boron nitrides, etc., exhibit unique and fascinating properties, such as high surface-to-volume ratio, inherent mechanical flexibility robustness, tunable bandgap, carrier mobility, which makes them an apt candidate for flexible electronics with low consumption of power. Because these they are in tremendous demand advancement energy, environmental, biomedical sectors developed through various...
A prospective randomized trial testing regional hyperthermic perfusion with melphalan has been conducted. Sixty-nine patients recurrent malignant melanoma of the extremities were randomly allocated to surgery (36 patients) or plus (33 patients). Prognostic variables concerning primary tumor as well disease evenly distributed in groups, excluding any bias randomization. Median tumor-free survival after randomization was 17 months group and 10 control group. There 15 locoregional recurrences...
Abstract Lignin of high purity can be separated from black liquor using the LignoBoost process, which overall efficiency is largely dependent on precipitation yield lignin, depends properties and process conditions. In this paper, influences conditions lignin mixed hardwood/softwood were investigated. The Klason standard UV method used to determine concentration. chemical structural also analyzed. results showed that increased along with a decrease in pH temperature, or an increase ion...
The irradiation of pulp is interest from different perspectives. Mainly it required when a modification cellulose needed. Irradiation could bring many advantages, such as chemical savings and, therefore, cost and reduction in environmental pollutants. In this account, dissociated celluloses were analyzed before after by electron beaming. focus the analysis was oxidation hydroxyl groups to carbonyl carboxyl degradation causing decrease molar mass. For that purpose, samples labeled with...
Abstract Cellulose was electrospun with various concentrations of ionic liquid and cosolvent. Three different cosolvents were used in this study; dimethylacetamide (DMAc), dimethyl formamide (DMF), sulfoxide (DMSO). The added to modify the viscosity, electrical conductivity, surface tension solutions. solubility cellulose liquids is highly affected by changes solvent properties on molecular level binary systems. difference structure interactions between cosolvent can explain dissolution...
Cellulose nanocrystals (CNC) were surface modified by grafting azetidinium salts onto the sulphate ester groups on cellulosic surfaces. The CNC characterized using NMR, FTIR spectroscopy, conductometric titration and measurement of ζ-potential. Thermal gravimetrical analysis revealed that onset temperature for thermal degradation was shifted upwards almost 100 °C as a result grafting. rheological properties dispersions based unmodified evaluated in detail. Two solids contents studied; 0.65...
This study reports the in situ crystal growth of HKUST‐1 on electrospun cellulose nanofibers. Two different methods for introducing carboxyl groups nanofiber surface were used; was then synthesized using a layer‐by‐layer approach. The distribution highly dependent type anionic pretreatment. loading could be controlled by synthesis and BET area increased factor 44 to 440 m 2 g −1 .
The fluorescence enhancement of light-up probes (thiazole orange (TO) conjugated peptide nucleic acids (PNAs)) upon hybridization to target acid depends on the probe sequence, mainly due large variations in free-probe fluorescence. Here we study three where free state varies more than 50-fold. We find that this variation is a fraction has TO intramolecularly "back-bound" PNA bases. intramolecular affinity constant for unimolecular interaction was determined by temperature titrations using...