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Papers by Mikael Skrifvars

Research paper thumbnail of The Effect of Glycerol in the Synthesis of a Lactic Acid Based Thermoset Resin

Research paper thumbnail of Preparation of conductive composite fibers made from polypropylene, polyamide and multi-walled carbon nanotubes: electrical, mechanical and thermal characteristics

Research paper thumbnail of Thermoset composites based on polylactic acid

Research paper thumbnail of Natural fibers for structural composite applications – concepts and opportunities

Research paper thumbnail of Dental and medical polymer composites and compositions

Research paper thumbnail of Optimization of oCVD Process for the Production of Conductive Fibers

Electro active textile fibers are key components in smart and interactive textile applications. I... more Electro active textile fibers are key components in smart and interactive textile applications. In our previous study, we produced poly (3, 4-ethylenedioxythiophene)(PEDOT) coat edviscose fibers by using oxidative chemical vapordeposition (OCVD) technique. We tried ...

Research paper thumbnail of Structural composites from cellulose reinforcements – material concepts and production strategies

Research paper thumbnail of Assessing thermal characteristics of polyhydroxybutyrate based composites reinforced with different natural fibres

Research paper thumbnail of Preparation and characterization of bio-nanocomposites from biobased thermoset resin and montmorillonite

Research paper thumbnail of Effect of ceramic filler content on the mechanical and thermal behaviour of poly-L-lactic acid and poly-L-laetic-co-glycolic acid composites for medical applications

Journal of Materials Science Materials in Medicine, 2010

Research paper thumbnail of All-organic conductive fibers for smart and interactive textile applications

Research paper thumbnail of Effect of level of ceramic nanofillers on the mechanical and thermal behaviour of PLA and PLGA composites materials for medical implants

ABSTRACT Abstract In this study, the influence of hydroxyapatite (HAp) and β-tricalcium phosphate... more ABSTRACT Abstract In this study, the influence of hydroxyapatite (HAp) and β-tricalcium phosphate (TCP) on the mechanical strength and the thermal degradation due to processing of PLLA and PLGA compounds were investigated. A twin screw micro-compounder is used to reinforce and blend PLA and PLGA granules with different dosage and particle size of HAp and β-TCP to produce smooth, homogenous profiles with sufficient mechanical strength and diameter sizes between 2-3.5 mm.

Research paper thumbnail of Preparation of biobased composites using novel thermoset polymers from soybean oil and a natural fibre reinforcement

Health related issues, stringent environmental protection policies, search for cost effective and... more Health related issues, stringent environmental protection policies, search for cost effective and alternative materials, crave for renewability and sustainability and quest for high performance materials for structural applications give the motivation for research in ...

Research paper thumbnail of Preparation and characterization of bio-nanocomposites from biobased thermoset resin, montmorillonite and natural fiber

Research paper thumbnail of The Effect of Spraying and Rolling Process Factors on Styrene Emission During the Application of Unsaturated Polyester Resins

Http Dx Doi Org 10 1080 15428110208984736, Jun 4, 2010

In recent years the awareness of the problems caused by styrene emission during the processing of... more In recent years the awareness of the problems caused by styrene emission during the processing of unsaturated polyester resins has enlarged. The spray-up application of gel coats is especially problematic, and it produces high styrene emission rates. The emission of styrene has been reduced through material changes, work practice controls, and add-on controls. However, the influence of the spray-up process factors on styrene emission has not been studied before. The aim of this study was to examine possibilities to reduce styrene emission by optimization of spray-up process factors. The following factors were studied under controlled laboratory conditions: orifice size and angle of the spray gun tip, spraying pressure, distance between spray gun and mold, and shape of the mold. The influence of the rolling pattern during lamination was also studied. Several significant factors were found. High pressure and long spraying distance increased both the unit styrene emission and the emission rate. The orifice size had two effects; a large orifice decreased the amount of styrene emitted per sprayed amount of resin but increased the emission rate of styrene. The shape of the mold did not affect the styrene emission. Styrene emission is greater if the entire mold area is rolled. To achieve lower emission is it necessary to roll an area as small as possible; this is especially important if a large mold is laminated. The results showed that emission of styrene can be reduced significantly by an optimal selection of the spray gun settings and the way of working. Optimal settings also increased the transfer efficiency resulting in decreased material loss.

Research paper thumbnail of FUNCTIONAL TEXTILES: Micro-porous Conductive Membranes for Bio-fuel Cell and Anti-static Air Filter Applications

Research paper thumbnail of Mechanical properties of renewable soyean oil thermoset reinforced with jute fabricsand lyocell fiber

Research paper thumbnail of Film Extrusion of Hydroxyapapatite and β-Tricalciumphosphate Functionalized Polyactide Polymers for Biomedical Implants

Research paper thumbnail of Characteristics of wheat gluten bioplastics in relation to processing methods

Research paper thumbnail of Preparation of conductive viscose fibres by vapour deposition polymerisation of polythiophene

Research paper thumbnail of The Effect of Glycerol in the Synthesis of a Lactic Acid Based Thermoset Resin

Research paper thumbnail of Preparation of conductive composite fibers made from polypropylene, polyamide and multi-walled carbon nanotubes: electrical, mechanical and thermal characteristics

Research paper thumbnail of Thermoset composites based on polylactic acid

Research paper thumbnail of Natural fibers for structural composite applications – concepts and opportunities

Research paper thumbnail of Dental and medical polymer composites and compositions

Research paper thumbnail of Optimization of oCVD Process for the Production of Conductive Fibers

Electro active textile fibers are key components in smart and interactive textile applications. I... more Electro active textile fibers are key components in smart and interactive textile applications. In our previous study, we produced poly (3, 4-ethylenedioxythiophene)(PEDOT) coat edviscose fibers by using oxidative chemical vapordeposition (OCVD) technique. We tried ...

Research paper thumbnail of Structural composites from cellulose reinforcements – material concepts and production strategies

Research paper thumbnail of Assessing thermal characteristics of polyhydroxybutyrate based composites reinforced with different natural fibres

Research paper thumbnail of Preparation and characterization of bio-nanocomposites from biobased thermoset resin and montmorillonite

Research paper thumbnail of Effect of ceramic filler content on the mechanical and thermal behaviour of poly-L-lactic acid and poly-L-laetic-co-glycolic acid composites for medical applications

Journal of Materials Science Materials in Medicine, 2010

Research paper thumbnail of All-organic conductive fibers for smart and interactive textile applications

Research paper thumbnail of Effect of level of ceramic nanofillers on the mechanical and thermal behaviour of PLA and PLGA composites materials for medical implants

ABSTRACT Abstract In this study, the influence of hydroxyapatite (HAp) and β-tricalcium phosphate... more ABSTRACT Abstract In this study, the influence of hydroxyapatite (HAp) and β-tricalcium phosphate (TCP) on the mechanical strength and the thermal degradation due to processing of PLLA and PLGA compounds were investigated. A twin screw micro-compounder is used to reinforce and blend PLA and PLGA granules with different dosage and particle size of HAp and β-TCP to produce smooth, homogenous profiles with sufficient mechanical strength and diameter sizes between 2-3.5 mm.

Research paper thumbnail of Preparation of biobased composites using novel thermoset polymers from soybean oil and a natural fibre reinforcement

Health related issues, stringent environmental protection policies, search for cost effective and... more Health related issues, stringent environmental protection policies, search for cost effective and alternative materials, crave for renewability and sustainability and quest for high performance materials for structural applications give the motivation for research in ...

Research paper thumbnail of Preparation and characterization of bio-nanocomposites from biobased thermoset resin, montmorillonite and natural fiber

Research paper thumbnail of The Effect of Spraying and Rolling Process Factors on Styrene Emission During the Application of Unsaturated Polyester Resins

Http Dx Doi Org 10 1080 15428110208984736, Jun 4, 2010

In recent years the awareness of the problems caused by styrene emission during the processing of... more In recent years the awareness of the problems caused by styrene emission during the processing of unsaturated polyester resins has enlarged. The spray-up application of gel coats is especially problematic, and it produces high styrene emission rates. The emission of styrene has been reduced through material changes, work practice controls, and add-on controls. However, the influence of the spray-up process factors on styrene emission has not been studied before. The aim of this study was to examine possibilities to reduce styrene emission by optimization of spray-up process factors. The following factors were studied under controlled laboratory conditions: orifice size and angle of the spray gun tip, spraying pressure, distance between spray gun and mold, and shape of the mold. The influence of the rolling pattern during lamination was also studied. Several significant factors were found. High pressure and long spraying distance increased both the unit styrene emission and the emission rate. The orifice size had two effects; a large orifice decreased the amount of styrene emitted per sprayed amount of resin but increased the emission rate of styrene. The shape of the mold did not affect the styrene emission. Styrene emission is greater if the entire mold area is rolled. To achieve lower emission is it necessary to roll an area as small as possible; this is especially important if a large mold is laminated. The results showed that emission of styrene can be reduced significantly by an optimal selection of the spray gun settings and the way of working. Optimal settings also increased the transfer efficiency resulting in decreased material loss.

Research paper thumbnail of FUNCTIONAL TEXTILES: Micro-porous Conductive Membranes for Bio-fuel Cell and Anti-static Air Filter Applications

Research paper thumbnail of Mechanical properties of renewable soyean oil thermoset reinforced with jute fabricsand lyocell fiber

Research paper thumbnail of Film Extrusion of Hydroxyapapatite and β-Tricalciumphosphate Functionalized Polyactide Polymers for Biomedical Implants

Research paper thumbnail of Characteristics of wheat gluten bioplastics in relation to processing methods

Research paper thumbnail of Preparation of conductive viscose fibres by vapour deposition polymerisation of polythiophene

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