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","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","237"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","European Journal of Wood and Wood Products"],["dc.bibliographiccitation.lastpage","244"],["dc.bibliographiccitation.volume","71"],["dc.contributor.author","Pries, Malte"],["dc.contributor.author","Mai, Carsten"],["dc.date.accessioned","2018-11-07T09:27:37Z"],["dc.date.available","2018-11-07T09:27:37Z"],["dc.date.issued","2013"],["dc.description.abstract","Wood was treated with the cationic silica sol (CSS) Levasil 200S and dried at various temperatures (room temperature, 40, 60, 80 and 103 A degrees C). A water leaching test revealed fixation of the silica in wood even after drying at room temperature. Maximum cross sectional swelling of the specimens decreased from 15.6 % (untreated control) to 13.0 %, when treated wood was dried at 103 A degrees C; cell wall bulking values were also negative (-2.3 %), indicating a thermal degradation of the cell wall polymers catalyzed by the CSS. Penetration of the CSS into the cell wall did not occur. A simple flammability test revealed increased fire resistance of the treated wood. Mass loss and velocity of mass loss as well as burning time were reduced; glowing of the formed charcoal was completely prevented. The effectiveness increased with increasing weight percent gain of the CSS in the wood. Thermo gravimetric analysis under nitrogen atmosphere displayed only minor reduction in the initial temperature of thermal decomposition for wood treated with CSS as compared to the control. In the presence of oxygen the resulting charcoal showed comparable thermal behaviour to the control. The yield of charcoal after pyrolysis was increased to a minor extent (from 19.9 to 23.0 %), indicating that the release of combustible gases was hardly reduced. The mode of action of enhanced fire resistance due to CSS-treatment is discussed."],["dc.identifier.doi","10.1007/s00107-013-0674-7"],["dc.identifier.isi","000315486100012"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/10275"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/30580"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","0018-3768"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Fire resistance of wood treated with a cationic silica sol"],["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"]]