Associate Professor Torbjörn Pettersson

Biography

Major parts of my research have been dealing with surface interaction and surface modifications. I have a strong background in using and developing advance AFM techniques. AFM is an excellent tool to obtain measurement with high lateral resolution both regarding force measurements and surface topography and also excellent to measure small forces. Majority of my AFM work have been dealing with force or friction force measurements and to obtain reliably measurements I have worked a lot on calibration issues. To obtain the information that I want to get I have done some modification of the AFM hardware and made some external software’s to control the instrument and evaluate the obtained data.

The systems that have been studied are various types of polyelectrolytes including proteins and living cells. Different types of polyelectrolytes with various charge densities have been evaluated and single layered or multi-layered structures of polyelectrolytes or polyelectrolyte complexes or proteins have been tested as lubrication protectors adhesion modifiers or compatibilizer for composite materials. The amount of material adsorbed to different surfaces has mainly been characterized with QCM-D.

During the latest years I have focused my research on wood and wood components mainly on cellulose fibres and cellulose fibrils. Studying the defibrillation process, fibril modifications, joint formation and compatibility problem related to fibre incorporation fibres and fibrils in composite materials. I have been rebuilding our JKR-instrument (both hard¬ware and software), and made it semi-automated, with automated image analysis which have made it fully functional for air measurement. And we have used this instrument to measure the interactions between different wood bio polymers, e.g. lignin, hemicelluloses and cellulose.

My interest to surface interaction and surface chemistry started during my work at Akzo Nobel, prior to my University studies, where I worked with bitumen emulsions and adhesion promoters to increase the wetability of bitumen to various types of stones. This work started my curiosity on for example how emulsion works, and why different types of surfactants gave better results than others and how could these surfactants affect the wetting of bitumen, and also make the bitumen resist water better. This interest focused my undergraduate studies into physical chemistry and surface chemistry, and my diploma work was done at the Institute for Surface Chemistry, YKI. After my diploma work I was offered to do research related to digital printing to study adhesion of toner to paper and cellulose networks. During the time at YKI I had a lot of small and large contract research project related to pulp and paper in collaborations with industrial partners. During my PhD study at Surface chemistry, KTH, I could really focus my research, and had good use of my previously experience and knowledge on for example surface modifications and surface characterisation. After receiving my PhD degree I turned my research back into forest product related issues and fibres doing both fundamental research on surface modifications and method development and also various applied research.

Publications

[2]
H. Li, T. Pettersson and L. Wågberg, "Internal structural evolution of regenerated cellulose beads during drying," Abstracts of Papers of the American Chemical Society, vol. 257, 2019.
[3]
T. Pettersson, "Molecular understanding of cellulose interactions," Abstracts of Papers of the American Chemical Society, vol. 257, 2019.
[5]
A. Träger et al., "Macroscopic cellulose probes for the measurement of polymer grafted surfaces," Cellulose (London), vol. 26, no. 3, pp. 1467-1477, 2019.
[7]
N. Benyahia Erdal et al., "Green Strategy to Reduced Nanographene Oxide through Microwave Assisted Transformation of Cellulose," ACS Sustainable Chemistry and Engineering, vol. 6, no. 1, pp. 1245-1255, 2018.
[8]
[9]
R. P. Karlsson et al., "Carbohydrate gel beads as model probes for quantifying non-ionic and ionic contributions behind the swelling of delignified plant fibers," Journal of Colloid and Interface Science, vol. 519, pp. 119-129, 2018.
[10]
T. Pettersson et al., "On the mechanism of freeze-induced crosslinking of aerogels made from periodate-oxidised cellulose nanofibrils," Abstracts of Papers of the American Chemical Society, vol. 255, 2018.
[11]
J. Erlandsson et al., "On the mechanism behind freezing-induced chemical crosslinking in ice-templated cellulose nanofibril aerogels," Journal of Materials Chemistry A, vol. 6, no. 40, pp. 19371-19380, 2018.
[12]
J. Hellwig, V. López Durán and T. Pettersson, "Measuring elasticity of wet cellulose fibres with AFM using indentation and a linearized Hertz model," Analytical Methods, vol. 10, no. 31, 2018.
[13]
T. Pettersson et al., "Measurement of the flexibility of wet cellulose fibres using atomic force microscopy," Cellulose (London), vol. 24, no. 10, pp. 4139-4149, 2017.
[14]
S. Torron et al., "Tailoring Soft Polymer Networks Based on Sugars and Fatty Acids toward Pressure Sensitive Adhesive Applications," ACS SUSTAINABLE CHEMISTRY & ENGINEERING, vol. 5, no. 3, pp. 2632-2638, 2017.
[15]
A. Hajian et al., "Understanding the Dispersive Action of Nanocellulose for Carbon Nanomaterials," Nano letters (Print), vol. 17, no. 3, pp. 1439-1447, 2017.
[16]
L. Ovaskainen et al., "The effect of different wear on superhydrophobic wax coatings," Nordic Pulp & Paper Research Journal, vol. 32, no. 2, pp. 195-203, 2017.
[17]
J. Hellwig et al., "Measuring elasticity of wet cellulose beads with an AFM colloidal probe using a linearized DMT model," Analytical Methods, vol. 9, no. 27, pp. 4019-4022, 2017.
[18]
[19]
T. Pettersson, H. Ramachandraiah and A. Russom, "Nanocellulose mediated layer-by-layer chip modification for cellular in-vitro diagnostics," Abstracts of Papers of the American Chemical Society, vol. 253, 2017.
[20]
I. Banerjee et al., "Slipdisc : A versatile sample preparation platform for point of care diagnostics," RSC Advances, vol. 7, no. 56, pp. 35048-35054, 2017.
[21]
K. H. Adolfsson et al., "Zero-Dimensional and Highly Oxygenated Graphene Oxide for Multifunctional Poly(lactic acid) Bionanocomposites," ACS Sustainable Chemistry & Engineering, vol. 4, no. 10, pp. 5618-5631, 2016.
[22]
I. Banerjee et al., "LDH based neonatal diagnostics on a low-cost slipdisc based sample preparation platform.," in Microsystems workshop, May 17-18,2016, Lund, Sweden, 2016.
[23]
T. Benselfelt et al., "Polyelectrolyte multilayers on differently charged cellulose surfaces," Abstracts of Papers of the American Chemical Society, vol. 251, 2016.
[24]
A. Traeger et al., "Strong and tunable wet adhesion with rationally designed layer-by-layer assembled triblock copolymer films," Abstracts of Papers of the American Chemical Society, vol. 251, 2016.
[25]
T. Pettersson et al., "Mixed micelles of chemically modified Pluronic as drug delivery system," Abstracts of Papers of the American Chemical Society, vol. 251, 2016.
[28]
B. Fallqvist et al., "Experimental and computational assessment of F-actin influence in regulating cellular stiffness and relaxation behaviour of fibroblasts," Journal of The Mechanical Behavior of Biomedical Materials, vol. 59, pp. 168-184, 2016.
[29]
[32]
T. Pettersson et al., "Robust and tailored wet adhesion in biopolymer thin film with wet adhesion and toughness superior to wet adhesion in bone," Abstracts of Papers of the American Chemical Society, vol. 249, 2015.
[33]
N. Nordgren et al., "Oncogene induced stiffening of living cells," Abstracts of Papers of the American Chemical Society, vol. 249, 2015.
[34]
P. A. Larsson, T. Pettersson and L. Wågberg, "Improved barrier films of cross-linked cellulose nanofibrils: a microscopy study," Green materials, vol. 2, no. 4, pp. 163-168, 2014.
[36]
R. W. N. Nugroho et al., "Force interactions of grafted polylactide particles," Abstract of Papers of the American Chemical Society, vol. 248, 2014.
[37]
T. Pettersson et al., "Designing nonagglomerating polylactide particles with various interaction forces by covalent photografting," Abstract of Papers of the American Chemical Society, vol. 247, pp. 768-COLL, 2014.
[38]
[39]
T. Pettersson et al., "Robust and Tailored Wet Adhesion in Biopolymer Thin Films," Biomacromolecules, vol. 15, no. 12, pp. 4420-4428, 2014.
[40]
A. Naderi, T. Lindstrom and T. Pettersson, "The state of carboxymethylated nanofibrils after homogenization-aided dilution from concentrated suspensions : a rheological perspective," Cellulose (London), vol. 21, no. 4, pp. 2357-2368, 2014.
[41]
P. A. Larsson, T. Pettersson and L. Wågberg, "Cross-linked barrier films with low sensitivity to relative humidity fabricated from nanofibrillated cellulose," Abstract of Papers of the American Chemical Society, vol. 247, pp. 256-CELL, 2014.
[42]
L. Z. Rathje et al., "Oncogenes induce a vimentin filament collapse mediated by HDAC6 that is linked to cell stiffness," Proceedings of the National Academy of Sciences of the United States of America, vol. 111, no. 4, pp. 1515-1520, 2014.
[43]
C. Bruce et al., "Physical Tuning of Cellulose-Polymer Interactions Utilizing Cationic Block Copolymers Based on PCL and Quaternized PDMAEMA," in APME2013 IUPAC 10th International Conference on Advanced Polymers via Macromolecular Engineering; Durham, UK, 18-22 August, 2013, 2013.
[44]
C. Bruce et al., "Physical Tuning of Cellulose-Polymer Interactions Utilizing Cationic Block Copolymers Based on PCL and Quaternized PDMAEMA," in 2013 TAPPI International Conference on Nanotechnology for Renewable Materials; Stockholm, Sweden, 24-27 June, 2013, 2013.
[45]
P. Olin et al., "Water Drop Friction on Superhydrophobic Surfaces," Langmuir, vol. 29, no. 29, pp. 9079-9089, 2013.
[46]
C. Lidenmark et al., "The adhesive behavior of extracted latex polymers towards silicon oxide and cellulose," International Journal of Adhesion and Adhesives, vol. 44, pp. 250-258, 2013.
[47]
C. Ankerfors et al., "Use of polyelectrolyte complexes and multilayers from polymers and nanoparticles to create sacrificial bonds between surfaces," Journal of Colloid and Interface Science, vol. 391, pp. 28-35, 2013.
[49]
T. Pettersson et al., "Adhesion between latex-polymers and cellulose or silica surfaces," in 11th International Biorelated Polymer Symposium / 243rd National Spring Meeting of the American-Chemical-Society (ACS), MAR 25-29, 2012, San Diego, CA, 2012.
[50]
P. H. Olin, T. Pettersson and L. Wågberg, "Influence of tilt angle and droplet size on the sliding rate of water droplets on superhydrophobic surfaces," in 11th International Biorelated Polymer Symposium / 243rd National Spring Meeting of the American-Chemical-Society (ACS), MAR 25-29, 2012, San Diego, CA, 2012.
Page responsible:Oruç Köklükaya
Belongs to: Department of Fibre and Polymer Technology
Last changed: May 15, 2018