Mai, Carsten

[["dc.bibliographiccitation.firstpage","685"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Wood Science and Technology"],["dc.bibliographiccitation.lastpage","699"],["dc.bibliographiccitation.volume","47"],["dc.contributor.author","Pries, Malte"],["dc.contributor.author","Wagner, Roland"],["dc.contributor.author","Kaesler, Karl-Heinz"],["dc.contributor.author","Militz, Holger"],["dc.contributor.author","Mai, Carsten"],["dc.date.accessioned","2018-11-07T09:23:27Z"],["dc.date.available","2018-11-07T09:23:27Z"],["dc.date.issued","2013"],["dc.description.abstract","Scots pine sapwood was acetylated with ethyltriacetoxysilane using acetic acid as a solvent and sulfuric acid as a catalyst. A weight percent gain (WPG) of 14 % and cell wall bulking of 7 % were obtained after 5 h of reaction time. Pine specimens were acetylated with acetic anhydride in the presence of 1 % ethyltriacetoxysilane, dihydroxy-functional siloxane, acetoxy-functional siloxane, amino-functional siloxane and non-functional siloxane, respectively. Acetoxy-functional siloxane induced the greatest reduction in water uptake with a water repellent effectiveness after 24 h of up to 62 % as compared to acetylated wood. WPG and cell wall bulking increased compared to solely acetylated wood with increasing concentrations of acetoxy-functional siloxane in acetic anhydride; anti-shrink efficiency, however, did not increase. Fungal resistance of pine sapwood and beech as well as mechanical strength properties did not change when 20 % acetoxy-functional siloxane was added to acetic anhydride compared to solely acetylated specimens."],["dc.identifier.doi","10.1007/s00226-013-0535-x"],["dc.identifier.isi","000320282100003"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/10286"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/29581"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","0043-7719"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Acetylation of wood in combination with polysiloxanes to improve water-related and mechanical properties of wood"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","3665"],["dc.bibliographiccitation.issue","10"],["dc.bibliographiccitation.journal","Materials"],["dc.bibliographiccitation.volume","15"],["dc.contributor.author","Slabohm, Maik"],["dc.contributor.author","Mai, Carsten"],["dc.contributor.author","Militz, Holger"],["dc.date.accessioned","2022-06-01T09:40:00Z"],["dc.date.available","2022-06-01T09:40:00Z"],["dc.date.issued","2022"],["dc.date.updated","2022-06-05T22:52:18Z"],["dc.description.abstract","The purpose of this review is to put previous research findings on acetylated wood and the fabrication of veneer-based products in a common context. The first research on wood acetylation was already conducted in the 1920s using wood meal, whereas relevant research on veneer acetylation was published nearly two decades later, during the 1940s. In the years that followed, a great deal of research has been done on both solid wood and composite acetylation. Developments in the 1990s and early 2000s resulted in the creation of commercial products. Nowadays, wood is becoming increasingly popular in construction. Therefore, high-performance materials with high dimensional stability and durability are required. Veneers are thereby of particular relevance because of their propensity to absorb chemicals into even tough-to-treat wood species. However, acetylation alters the bonding properties of wood, which is important for the manufacture of engineered veneer products, especially in load-bearing construction. A large amount of research is now being conducted on the acetylation of veneer, and acetylated veneer products are anticipated in the near future. This study covers the fundamentals of bonding but focuses specifically on veneer acetylation and its fabrication to engineered veneer-based products. The influencing factors of acetylation on bonding are also discussed."],["dc.description.sponsorship","Open-Access-Publikationsfonds 2022"],["dc.identifier.doi","10.3390/ma15103665"],["dc.identifier.pii","ma15103665"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/108612"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-572"],["dc.relation.eissn","1996-1944"],["dc.rights","CC BY 4.0"],["dc.title","Bonding Acetylated Veneer for Engineered Wood Products—A Review"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","658"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","Forests"],["dc.bibliographiccitation.volume","11"],["dc.contributor.author","Hundhausen, Ulrich"],["dc.contributor.author","Mai, Carsten"],["dc.contributor.author","Slabohm, Maik"],["dc.contributor.author","Gschweidl, Florian"],["dc.contributor.author","Schwarzenbrunner, Ronald"],["dc.date.accessioned","2021-04-14T08:25:06Z"],["dc.date.available","2021-04-14T08:25:06Z"],["dc.date.issued","2020"],["dc.identifier.doi","10.3390/f11060658"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/81523"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.publisher","MDPI"],["dc.relation.eissn","1999-4907"],["dc.rights","https://creativecommons.org/licenses/by/4.0/"],["dc.title","The Staining Effect of Iron (II) Sulfate on Nine Different Wooden Substrates"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","6933"],["dc.bibliographiccitation.issue","19"],["dc.bibliographiccitation.journal","Materials"],["dc.bibliographiccitation.volume","15"],["dc.contributor.author","Kuqo, Aldi"],["dc.contributor.author","Mai, Carsten"],["dc.date.accessioned","2022-11-01T10:17:28Z"],["dc.date.available","2022-11-01T10:17:28Z"],["dc.date.issued","2022"],["dc.date.updated","2022-11-11T13:12:10Z"],["dc.description.abstract","Seagrass wracks, the remains of dead leaves accumulated on seashores, are important ecosystems and beneficial for the marine environment. Their presence on the touristic beaches, however, is a problem for the tourism industry due to the lack of aesthetics and safety reasons. At the present time, seagrass leaves are landfilled, although this is not considered an ecological waste management practice. Among other proposed practices for more sustainable and environmentally friendly management, such as composting and biogas or energy generation, in this study we aim to use seagrass leaves for the production of insulation materials. Insulation boards from two types of seagrass leaves (Posidonia oceanica and Zostera marina) at densities varying from 80 to 200 kg m−3 were prepared and their physical and mechanical properties were examined and compared to those of wood fiber insulation boards. The thermal conductivity of seagrass-based insulation boards varied from 0.042 to 0.050 W m−1 K−1, which was up to 12% lower compared to the latter. The cone calorimetry analysis revealed that seagrass-based insulation boards are more fire resistant than those from wood fibers, as they release very low amounts of heat during combustion and do not ignite when exposed to a single flame (Bunsen burner). A simplified cost analysis showed that insulation boards made from seagrass leaves can be up to 30% cheaper compared to those made from wood fibers. After their end of life, seagrass leaves can again be considered a valuable resource and be further utilized by adopting other management strategies."],["dc.description.sponsorship","Göttingen University"],["dc.description.sponsorship","Open-Access-Publikationsfonds 2022"],["dc.identifier.doi","10.3390/ma15196933"],["dc.identifier.pii","ma15196933"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/116818"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-605"],["dc.relation.eissn","1996-1944"],["dc.rights","CC BY 4.0"],["dc.title","Seagrass Leaves: An Alternative Resource for the Production of Insulation Materials"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","unpublished"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","421"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Holzforschung"],["dc.bibliographiccitation.lastpage","427"],["dc.bibliographiccitation.volume","67"],["dc.contributor.author","Ghosh, Shyamal C."],["dc.contributor.author","Militz, Holger"],["dc.contributor.author","Mai, Carsten"],["dc.date.accessioned","2018-11-07T09:25:20Z"],["dc.date.available","2018-11-07T09:25:20Z"],["dc.date.issued","2013"],["dc.description.abstract","The water-related properties of Scots pine (Pinus sylvestris L.) sapwood have been improved by treatment with quat-and amino-silicones of different chain lengths. Standard leaching test and hot water Soxhlet extraction (6 h) showed that the amino-silicones are better fixed in wood than the quat-silicones. A water dipping test (24 h) revealed that both quat- and amino-silicones made wood hydrophobic; however, amino-silicones were more effective in reducing water uptake. The long-chained silicones of both types resulted in higher water repellent effectiveness compared with the respective short-chained silicones. As demonstrated by assessing cell wall bulking, scanning electron microscopy (SEM), and SEM energy-dispersive X-ray analysis, silicones with short chains penetrated the cell wall better than those with long chains regardless of the silicone type. The maximum antishrink efficiency of approximately 60% was attained with short-chained amino-silicone at approximately 39% weight percent gain. The short-chained silicones show more potential to enhance the water-related properties of solid wood and for the development of silicone-based industrial wood modification processes."],["dc.identifier.doi","10.1515/hf-2012-0103"],["dc.identifier.isi","000318222500009"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/10796"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/30040"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Walter De Gruyter Gmbh"],["dc.relation.issn","0018-3830"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Modification of Pinus sylvestris L. wood with quat- and amino-silicones of different chain lengths"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1033"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","Wood Science and Technology"],["dc.bibliographiccitation.lastpage","1041"],["dc.bibliographiccitation.volume","46"],["dc.contributor.author","Ghosh, Shyamal C."],["dc.contributor.author","Peters, Brenton C."],["dc.contributor.author","Fitzgerald, Chris J."],["dc.contributor.author","Militz, Holger"],["dc.contributor.author","Mai, Carsten"],["dc.date.accessioned","2018-11-07T09:04:13Z"],["dc.date.available","2018-11-07T09:04:13Z"],["dc.date.issued","2012"],["dc.description.abstract","Scots pine (Pinus sylvestris L.) sapwood was treated with quat-silicone micro-emulsion (< 40 nm), amino-silicone macro-emulsion (110 nm), alkyl-modified silicone macro-emulsion (740 nm) and solutions of inorganic water glass. Three treatment concentrations of 5, 15 and 30% (w/w) were used for the impregnation of the test specimens. Termite resistance was assessed following a 16-week field trial conducted in northern Queensland, Australia. Two different field sites were chosen for exposure to feeding by Coptotermes acinaciformis (Froggatt) and Mastotermes darwiniensis (Froggatt). Following exposure, the test and feeder specimens were inspected and assessed for termite damage using a visual rating system (from 10 sound to 0 completely destroyed) and individual mass losses. The specimens treated with quat- and amino-silicone emulsions resisted damage by both termite species, even at less than 15% weight percent gains (WPGs). Alkyl-modified silicone macro-emulsion and water glass treatment induced somewhat less resistance to termite damage, but imparted protection at higher WPGs."],["dc.identifier.doi","10.1007/s00226-012-0464-0"],["dc.identifier.isi","000310225800002"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/8792"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/25068"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","0043-7719"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Resistance of Scots pine (Pinus sylvestris L.) wood modified with functionalized commercial silicone emulsions against subterranean termites"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","49"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Wood Science and Technology"],["dc.bibliographiccitation.lastpage","61"],["dc.bibliographiccitation.volume","45"],["dc.contributor.author","Xie, Yanjun"],["dc.contributor.author","Hill, Callum A. S."],["dc.contributor.author","Xiao, Zefang"],["dc.contributor.author","Mai, Carsten"],["dc.contributor.author","Militz, Holger"],["dc.date.accessioned","2018-11-07T09:00:00Z"],["dc.date.available","2018-11-07T09:00:00Z"],["dc.date.issued","2011"],["dc.description.abstract","The dynamic water vapour sorption properties of Scots pine (Pinus sylvestris L.) wood samples were studied to investigate the modifying effects of glutaraldehyde. Pine sapwood was treated with solutions of glutaraldehyde and a catalyst (magnesium chloride) to obtain weight per cent gains of 0.5, 8.6, 15.5, and 21.0%, respectively. The sorption behaviour of untreated and treated wood was measured using a Dynamic Vapour Sorption apparatus. The results showed considerable reduction in equilibrium moisture content of wood and the corresponding equilibrium time at each target relative humidity (RH) due to glutaraldehyde treatment. The moisture adsorption and desorption rates of modified and unmodified wood were generally faster in the low RH range (up to approximate 20%) than in the high range. Modification primarily reduced the adsorption and desorption rates over the high RH range of 20-95%. Glutaraldehyde modification resulted in a reduction in sorption hysteresis due to the loss of elasticity of cell walls."],["dc.description.sponsorship","German Academic Exchange Service (DAAD)"],["dc.identifier.doi","10.1007/s00226-010-0311-0"],["dc.identifier.isi","000286195200004"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/7298"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/24042"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","0043-7719"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Dynamic water vapour sorption properties of wood treated with glutaraldehyde"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","493"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Holzforschung"],["dc.bibliographiccitation.lastpage","496"],["dc.bibliographiccitation.volume","66"],["dc.contributor.author","Klüppel, André"],["dc.contributor.author","Mai, Carsten"],["dc.date.accessioned","2014-02-19T14:18:01Z"],["dc.date.accessioned","2021-10-27T13:13:25Z"],["dc.date.available","2014-02-19T14:18:01Z"],["dc.date.available","2021-10-27T13:13:25Z"],["dc.date.issued","2012"],["dc.description.abstract","Scots pine micro-veneers were subjected to hydrolysis with sulphuric acid or delignifi cation with acidic sodium chlorite and a combination of both treatments. The tensile strength of untreated and treated veneers was determined at fi nite span (f-strength) and zero span (z-strength) under both dry (20 ° C, 65 % relative humidity) and water-saturated conditions. Acidic hydrolysis resulted in signifi cant strength losses in both testing modes and both moisture conditions, with the greatest strength reduction found for f-strength tested dry. After delignification, only f-strength under wet conditions was substantially reduced; dry f-strength and both dry and wet z-strength hardly changed. A combined treatment of prehydrolysis and delignifi cation resulted in disintegration of the veneers, which made strength determination impossible. It was concluded that, in addition to cellulose, the hemicelluloses determine the f-strength under dry conditions, while lignin confers wet strength but appears not to contribute to interfi bre adhesion and f-strength under dry conditions."],["dc.identifier.doi","10.1515/hf.2011.173"],["dc.identifier.fs","590875"],["dc.identifier.isi","000304467600011"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/9928"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/91776"],["dc.language.iso","en"],["dc.notes.intern","Migrated from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Walter De Gruyter & Co"],["dc.relation.issn","1437-434X"],["dc.relation.issn","0018-3830"],["dc.relation.orgunit","Fakultät für Forstwissenschaften und Waldökologie"],["dc.rights","Goescholar"],["dc.rights.access","openAccess"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.subject","dry strength; fi nite span; microtensile testing; micro-veneers; wet strength; zero span."],["dc.title","Effect of lignin and hemicelluloses on the tensile strength of micro-veneers determined at finite span and zero span"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","447"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Holzforschung"],["dc.bibliographiccitation.lastpage","454"],["dc.bibliographiccitation.volume","67"],["dc.contributor.author","Pries, Malte"],["dc.contributor.author","Wagner, Roland"],["dc.contributor.author","Kaesler, Karl-Heinz"],["dc.contributor.author","Militz, Holger"],["dc.contributor.author","Mai, Carsten"],["dc.date.accessioned","2018-11-07T09:25:21Z"],["dc.date.available","2018-11-07T09:25:21Z"],["dc.date.issued","2013"],["dc.description.abstract","Blocks of pine sapwood and beech wood were treated with water-based emulsions containing short-chain silicones with different alpha-omega-bonded functional groups, such as diamino, carboxyl and carbonyl, betain, and epoxy groups. The weight percent gain upon treatment of the pine wood specimens was relatively high (10%-20%), but their cross-sectional bulking was low (1%-2.5%). Thus, the anti-shrink efficiency (ASE) due to the treatment was also low. The first water-submersion tests revealed some hydrophobation of the treated wood. A second submersion test, however, revealed successful hydrophobation only for betain-functionalised material. The carboxylated silicone even increased the speed of water uptake as compared to the controls. The samples treated with silicones bearing epoxy, diamino, and carboxy functionalities showed a distinct reduction in mass loss compared to the control samples after 16 weeks of incubation with the fungi Coniophora puteana and Trametes versicolor according to EN 113 and CEN/TS 15083-1, whereas the betain-functionalised silicone did not enhance fungal resistance. All silicones tested lowered the mass loss in a soft rot test according to ENv 807. The mode of action of the silicones is discussed."],["dc.description.sponsorship","Momentive Performance Materials GmbH, Leverkusen, Germany"],["dc.identifier.doi","10.1515/hf-2012-0065"],["dc.identifier.isi","000318222500012"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/10797"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/30043"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Walter De Gruyter Gmbh"],["dc.relation.issn","0018-3830"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Effect of short-chain silicones bearing different functional groups on the resistance of pine (Pinus sylvestris L.) and beech (Fagus sylvatica L.) against decay fungi"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","659"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","BioResources"],["dc.bibliographiccitation.lastpage","673"],["dc.bibliographiccitation.volume","4"],["dc.contributor.author","Ghosh, Shyamal C."],["dc.contributor.author","Militz, Holger"],["dc.contributor.author","Mai, Carsten"],["dc.date.accessioned","2019-07-10T08:13:22Z"],["dc.date.available","2019-07-10T08:13:22Z"],["dc.date.issued","2009"],["dc.description.abstract","A quat-silicone micro-emulsion (particle size <40 nm), an amino-silicone macro-emulsion (110 nm), and an alkyl modified silicone macro-emulsion (740 nm) were used to modify Scots pine (Pinus sylvestris L.) sapwood. Treated and uncoated boards were exposed to natural weathering for one year along with water treated controls according to EN 927-3. The treatment with silicone emulsions did not enhance the color stability, which was assessed at three months intervals using a spectrophoto-meter and classified according to the CIE-Lab system. Treatment with amino-silicone emulsions gave a more yellowish appearance of the wood surface before weathering than the other silicones and the control. Boards treated with quat- and amino-silicone were less overgrown by staining fungi and displayed reduced surface roughness than those treated with alkyl-modified silicone and the control samples."],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/5890"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/61223"],["dc.language.iso","en"],["dc.notes.intern","Migrated from goescholar"],["dc.relation.issn","1930-2126"],["dc.rights","Goescholar"],["dc.rights.access","openAccess"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.subject","Alkyl modified silicone; Amino-silicone; Quat-silicone; Macro-emulsion; Micro-emulsion; Roughness; Weathering"],["dc.subject.ddc","570"],["dc.title","Natural weathering of scots pine (Pinus sylvestris L.) boards modified with functionalised commercial silicone emulsions"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]