Armin Thumm
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View article: Boosting softwood hemicellulose hydrolysis: Enzymes from a new fungi Penicillium rotoruae remarkably improve CTec-2 hydrolysis efficiency and reduce sugar production costs
Boosting softwood hemicellulose hydrolysis: Enzymes from a new fungi Penicillium rotoruae remarkably improve CTec-2 hydrolysis efficiency and reduce sugar production costs Open
Economic production of fermentable sugars from lignocellulosic biomass is critical for the biorefinery applications in the bioeconomy industry. This study demonstrates effective enzymatic hydrolysis of recalcitrant softwood using newly ide…
View article: Determining the sequence of extracting Pinus radiata bark to maximize the total yield of extractives–towards the development of a bark-based biorefinery
Determining the sequence of extracting Pinus radiata bark to maximize the total yield of extractives–towards the development of a bark-based biorefinery Open
Pinus radiata is the dominant tree species in exotic plantation forestry of New Zealand producing timber for construction and pulp and paper. Additionally, the processing yields large amounts of bark as a byproduct that is either left at t…
View article: A comparison of NIR spectroscopy and colour measurements for the classification of radiata pine timber thermally modified over a narrow temperature range
A comparison of NIR spectroscopy and colour measurements for the classification of radiata pine timber thermally modified over a narrow temperature range Open
The New Zealand Building Code is unique in the world in having prescribed durability requirements for all building elements, including interior timber such as flooring. Heavy metal preservatives are still used extensively for this purpose,…
View article: Determining the sequence of extracting Pinus radiata bark to maximize the total yield of extractives–towards the development of a bark-based biorefinery
Determining the sequence of extracting Pinus radiata bark to maximize the total yield of extractives–towards the development of a bark-based biorefinery Open
Tree bark is an abundantly available resource that is a waste product of the timber processing industry. It is rich in chemicals that require sequential treatment with solvents of differing polarities to extract said compounds. The success…
View article: Coating of Hemp Fibres with Hydrophobic Compounds Extracted from Pine Bark
Coating of Hemp Fibres with Hydrophobic Compounds Extracted from Pine Bark Open
Applying coatings of paraffins and other synthetic waxes is a common approach to impart hydrophobic properties to fibres and thus control their surface characteristics. Replacing these fossil-based products with alternatives derived from r…
View article: Extraction and isolation of hydrophobic compounds and tannins from Pinus radiata bark using switchable hydrophilicity solvents
Extraction and isolation of hydrophobic compounds and tannins from Pinus radiata bark using switchable hydrophilicity solvents Open
Pinus radiata is the dominant species of tree in the New Zealand forestry industry, with 38.3 million m3 of P. radiata trees harvested annually. Bark is removed from these trees when they are processed into logs, resulting in bark waste th…
View article: Pilot-Scale Production of Hemicellulose Ethers from Softwood Hemicelluloses Obtained from Compression Screw Pressate of a Thermo-Mechanical Pulping Plant
Pilot-Scale Production of Hemicellulose Ethers from Softwood Hemicelluloses Obtained from Compression Screw Pressate of a Thermo-Mechanical Pulping Plant Open
Bio-derived materials are becoming increasingly sought-after as a sustainable alternative to petrochemical-derived polymers. In the present pilot-scale study, a hemicellulose-rich compression screw pressate, obtained from the pre-heating s…
View article: Isolation and purification of high-molecular weight hemicelluloses from radiata pine wood chips prior to thermo-mechanical pulp (TMP) production
Isolation and purification of high-molecular weight hemicelluloses from radiata pine wood chips prior to thermo-mechanical pulp (TMP) production Open
A novel thermo-mechanical pulping (TMP) process has been developed to produce a by-product rich in high-molecular weight (MW) hemicelluloses, a potential raw material for barrier coatings and films. This process uses prehydrolysis to solub…
View article: Isolation and Purification of High-Molecular Weight Hemicelluloses from Radiata Pine Wood Chips Prior to Thermo-Mechanical Pulp (Tmp) Production
Isolation and Purification of High-Molecular Weight Hemicelluloses from Radiata Pine Wood Chips Prior to Thermo-Mechanical Pulp (Tmp) Production Open
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: Ligno-Cellulosic Fibre Sized with Nucleating Agents Promoting Transcrystallinity in Isotactic Polypropylene Composites
Ligno-Cellulosic Fibre Sized with Nucleating Agents Promoting Transcrystallinity in Isotactic Polypropylene Composites Open
The mechanical performance of composites made from isotactic polypropylene reinforced with natural fibres depends on the interface between fibre and matrix, as well as matrix crystallinity. Sizing the fibre surface with nucleating agents t…
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: Processing and Properties of MDF Fibre-Reinforced Biopolyesters with Chain Extender Additives
Processing and Properties of MDF Fibre-Reinforced Biopolyesters with Chain Extender Additives Open
Biopolyesters are a way to improve natural fibre composite sustainability. This study explores, for the first time, the potential of using medium density fibreboard (MDF) fibres to reinforce four biobased and biodegradable polyester matric…