Mai, Carsten

[["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","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"]]

[["dc.bibliographiccitation.firstpage","1303"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","BioResources"],["dc.bibliographiccitation.lastpage","1314"],["dc.bibliographiccitation.volume","3"],["dc.contributor.author","Ghosh, Shyamal C."],["dc.contributor.author","Militz, Holger"],["dc.contributor.author","Mai, Carsten"],["dc.date.accessioned","2019-07-10T08:13:23Z"],["dc.date.available","2019-07-10T08:13:23Z"],["dc.date.issued","2008"],["dc.description.abstract","Three commercial silicone emulsions with different functional groups i.e., quat-silicone micro-emulsion (<40 nm particle size), amino-silicone macro-emulsion (110 nm), and silicone macro-emulsion with alkyl-modified side groups (740 nm) were used to protect wood samples against fungal decay. The addition of the emulsions to an agar growth medium revealed that all three silicone formulations inhibited the growth of Coniophora puteana and Trametes versicolor compared to the controls without silicone. Wood mini-blocks of pine sapwood and beech wood were treated with 2%, 5%, 10%, and 15% concentration of silicone emulsions and tested for their resistance against basidiomycete decay. Quat-silicone and amino-silicone emulsions at higher concentrations imparted resistance of wood to both types of basidiomycetes, while the alkyl-modified silicone formulation did not enhance the resistance. In a soft rot test according to ENV 807, wood treated with an amino-sililcone emulsion showed the lowest weight loss and loss of dynamic MOE. Quat-silicone micro-emulsion had a lower effect, while the alkyl-modified silicone emulsion did not cause reduction in weight and strength loss compared to the untreated controls. The increased resistance against soft rot might be attributed to a lag in fungal colonization rather than to a sustained effect of protection."],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/5893"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/61226"],["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","Amino-silicone; Brown rot; Macro-emulsion; Micro-emulsion; Quat-silicone; Soft rot; White rot"],["dc.subject.ddc","570"],["dc.title","Decay resistance of treated wood with functionalised commercial silicones"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","159"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","European Journal of Wood and Wood Products"],["dc.bibliographiccitation.lastpage","167"],["dc.bibliographiccitation.volume","67"],["dc.contributor.author","Ghosh, Shyamal C."],["dc.contributor.author","Militz, Holger"],["dc.contributor.author","Mai, Carsten"],["dc.date.accessioned","2018-11-07T08:30:16Z"],["dc.date.available","2018-11-07T08:30:16Z"],["dc.date.issued","2009"],["dc.description.abstract","Scots pine (Pinus sylvestris L.) samples were vacuum pressure impregnated with quaternary ammonium (quat)-silicone micro-emulsion (< 40 nm particle size), amino-silicone macro-emulsion (110 nm) and silicone macro-emulsion with alkyl modified side groups (740 nm). Quat-silicone micro-emulsion caused highest cell wall bulking (4.8%) and anti-swelling efficiency (21.8%) in wood when treated with 30% concentration of silicone in the treatment solution. All three formulations made wood hydrophobic which was evident from a capillary (longitudinal, tangential and radial) water uptake test. Amino-silicone macro-emulsion (10% silicone in treatment solution) resulted in strong resistance to blue stain attack with both pre-weathered and not pre-weathered wood samples. Signs of blue staining were more evident on the pre-weathered samples. Treatment with amino-silicone macro-emulsion (10% silicone in treatment solution) resulted in a certain resistance to mould growth on wood surfaces, whereas wood treated with the same concentration of quat-silicone micro-emulsion and alkyl-modified silicone macro-emulsion exhibited comparatively lower resistance."],["dc.identifier.doi","10.1007/s00107-008-0296-7"],["dc.identifier.isi","000267042900006"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?goescholar/3470"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/16852"],["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","The efficacy of commercial silicones against blue stain and mould fungi in 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","1009"],["dc.bibliographiccitation.issue","8"],["dc.bibliographiccitation.journal","Holzforschung"],["dc.bibliographiccitation.lastpage","1015"],["dc.bibliographiccitation.volume","66"],["dc.contributor.author","Ghosh, Shyamal C."],["dc.contributor.author","Dyckmans, Jens"],["dc.contributor.author","Militz, Holger"],["dc.contributor.author","Mai, Carsten"],["dc.date.accessioned","2018-11-07T09:02:32Z"],["dc.date.available","2018-11-07T09:02:32Z"],["dc.date.issued","2012"],["dc.description.abstract","Scots pine (Pinus sylvestris L.) and European beech (Fagus sylvatica L.) wood samples treated with quaternary (quat)and amino-silicone (QS and AS) solutions of different chain lengths were tested against brown-rot and white-rot fungi as well as with regard to blue stain colonisation. The treatment with short-chained silicones bearing quat and amino functional group reduced the mass loss (ML) by decay fungi at 15% treatment concentration. The release of metabolic heat by decayed samples determined in a microcalorimeter corresponded with the ML of the samples, i.e., samples with high ML produced more heat indicating higher fungal activity. Short-chain ASs reduced the blue staining more strongly than long-chain ones. However, the opposite was true in the case of QS. It was assumed that the combined effect of hydrophobation, cell wall bulking and change of the wood surface energy are responsible for a successful performance of silicone compounds as wood preservatives."],["dc.identifier.doi","10.1515/hf-2012-0024"],["dc.identifier.isi","000313518500014"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/9929"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/24706"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Walter De Gruyter & Co"],["dc.relation.issn","0018-3830"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Effect of quat- and amino-silicones on fungal colonisation and decay 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"]]