David Sandquist
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View article: Biocomposite modeling by tomographic feature extraction and synthetic microstructure reconstruction
Biocomposite modeling by tomographic feature extraction and synthetic microstructure reconstruction Open
In comparison to established glass and carbon fiber models, creating a representative volume element to perform finite element analysis for a biocomposite is a complex undertaking. As the fibers appear in a variety of lengths, shapes and o…
View article: Impact of stone ground ‘V-fines’ dispersion and compatibilization on polyethylene wood plastic composites
Impact of stone ground ‘V-fines’ dispersion and compatibilization on polyethylene wood plastic composites Open
Recent studies have suggested that blocky mechanical pulp fines (CTMP fines) and fibrillar fines (SMC fines) have a negative impact on biocomposite modulus of rupture (MoR) in compression molded biocomposites. In addition, it was suggested…
View article: The influence of mechanical pulping treatment on the physical properties of wood fibre plastic composites
The influence of mechanical pulping treatment on the physical properties of wood fibre plastic composites Open
Medium density fibreboard (MDF) fibres produced by a mechanical pulping process have shown potential for reinforcement in natural fibre composites (NFCs). In this work, the effect of process options, available in a pilot-scale fibre proces…
View article: Tree species identification via 1H NMR fingerprinting of supercritical carbon dioxide wood extractives
Tree species identification via 1H NMR fingerprinting of supercritical carbon dioxide wood extractives Open
Six tree species were examined using 1H NMR spectroscopy of sap extracted by supercritical CO2. A metabolomic approach was developed to evaluate the sap extracted from sapwood of Norway spruce (Picea abies), Sitka spruce (Picea sitchensis)…
View article: The influence of fines material on the mechanical performance of wood fiber polypropylene composites
The influence of fines material on the mechanical performance of wood fiber polypropylene composites Open
With an increasing interest in a wider scope of biomass feedstocks for biocomposite production, the potential influence of a possibly higher proportion of fines material needs to be addressed. In the pulp and paper industry, at least two m…
View article: Anatomical and Immunocoverage Observations on SuSy, C4H, and Pectate Lyase Family Protein Down-regulated Aspens Genotypes
Anatomical and Immunocoverage Observations on SuSy, C4H, and Pectate Lyase Family Protein Down-regulated Aspens Genotypes Open
This study aims to complement previous studies on down-regulation of sucrose synthase and cinnamate 4-hydroxylase in hybrid aspen (Bjurhager et al. 2010; Gerber et al. 2014) with a quantitative anatomical comparison (Sandquist et al. 2015)…
View article: Quantitative Evaluation of Hybrid Aspen Xylem and Immunolabeling Patterns Using Image Analysis and Multivariate Statistics
Quantitative Evaluation of Hybrid Aspen Xylem and Immunolabeling Patterns Using Image Analysis and Multivariate Statistics Open
A new method is presented for quantitative evaluation of hybrid aspen genotype xylem morphology and immunolabeling micro-distribution. This method can be used as an aid in assessing differences in genotypes from classic tree breeding studi…