Effects of Acid Pre-Treatments on the Swelling and Vapor Sorption of Thermally Modified Scots Pine (Pinus sylvestris L.) Wood. Hosseinpourpia, R., Adamopoulos, S., & Mai, C BioResources, 13(1):331–345, 2018. abstract bibtex Scots pine sapwood samples were pre-treated with a Lewis acid (AlCl3) and a combination of Lewis and protonic acids (AlCl3 and H2SO4), and were subsequently exposed to respective temperatures of 180 °C and 120 °C for establishing a comparable mass loss with those impregnated with demineralized water and solely thermally modified at 220 °C. Water impregnated samples dried at 120 °C also served as controls. The swelling behavior of all wood samples was examined with respect to maximum swelling in water, anti-swelling efficiency (ASE), shrinkage, and dynamic water vapor sorption at relative humidity ranges of 0% to 95%. The thermal modification at 220 °C diminished swelling and moisture adsorption, and also reduced moisture increment and decrement compared with the unmodified control. However, it was less obvious than both acid pre-treated samples. Excess surface work and Hailwood-Horrobin results calculated from water vapor sorption studies demonstrated that, at comparable mass loss, the available sorption sites were reduced to a greater extent by Lewis acid and combination of Lewis and protonic acids pre-treatment than the sole thermal treatment. This was attributed to more pronounced degradation of polysaccharides, mainly hemicelluloses and amorphous parts of cellulose, and to cross-linking of cell wall polymers due to the acid pre-treatments.
@article{hosseinpourpia_effects_2018,
title = {Effects of {Acid} {Pre}-{Treatments} on the {Swelling} and {Vapor} {Sorption} of {Thermally} {Modified} {Scots} {Pine} ({Pinus} sylvestris {L}.) {Wood}},
volume = {13},
abstract = {Scots pine sapwood samples were pre-treated with a Lewis acid (AlCl3) and a combination of Lewis and protonic acids (AlCl3 and H2SO4), and were subsequently exposed to respective temperatures of 180 °C and 120 °C for establishing a comparable mass loss with those impregnated with demineralized water and solely thermally modified at 220 °C. Water impregnated samples dried at 120 °C also served as controls. The swelling behavior of all wood samples was examined with respect to maximum swelling in water, anti-swelling efficiency (ASE), shrinkage, and dynamic water vapor sorption at relative humidity ranges of 0\% to 95\%. The thermal modification at 220 °C diminished swelling and moisture adsorption, and also reduced moisture increment and decrement compared with the unmodified control. However, it was less obvious than both acid pre-treated samples. Excess surface work and Hailwood-Horrobin results calculated from water vapor sorption studies demonstrated that, at comparable mass loss, the available sorption sites were reduced to a greater extent by Lewis acid and combination of Lewis and protonic acids pre-treatment than the sole thermal treatment. This was attributed to more pronounced degradation of polysaccharides, mainly hemicelluloses and amorphous parts of cellulose, and to cross-linking of cell wall polymers due to the acid pre-treatments.},
number = {1},
journal = {BioResources},
author = {Hosseinpourpia, Reza and Adamopoulos, Stergios and Mai, C},
year = {2018},
pages = {331--345},
file = {Hosseinpourpia et al. - 2018 - Effects of Acid Pre-Treatments on the Swelling and.pdf:C\:\\Users\\Eva\\Zotero\\storage\\6Q94SSII\\Hosseinpourpia et al. - 2018 - Effects of Acid Pre-Treatments on the Swelling and.pdf:application/pdf},
}
Downloads: 0
{"_id":"889sNNcTtAsZKPBkQ","bibbaseid":"hosseinpourpia-adamopoulos-mai-effectsofacidpretreatmentsontheswellingandvaporsorptionofthermallymodifiedscotspinepinussylvestrislwood-2018","downloads":0,"creationDate":"2018-06-18T10:52:28.825Z","title":"Effects of Acid Pre-Treatments on the Swelling and Vapor Sorption of Thermally Modified Scots Pine (Pinus sylvestris L.) Wood","author_short":["Hosseinpourpia, R.","Adamopoulos, S.","Mai, C"],"year":2018,"bibtype":"article","biburl":"https://owncloud.gwdg.de/index.php/s/UdLcSEWHsbZTh23/download","bibdata":{"bibtype":"article","type":"article","title":"Effects of Acid Pre-Treatments on the Swelling and Vapor Sorption of Thermally Modified Scots Pine (Pinus sylvestris L.) Wood","volume":"13","abstract":"Scots pine sapwood samples were pre-treated with a Lewis acid (AlCl3) and a combination of Lewis and protonic acids (AlCl3 and H2SO4), and were subsequently exposed to respective temperatures of 180 °C and 120 °C for establishing a comparable mass loss with those impregnated with demineralized water and solely thermally modified at 220 °C. Water impregnated samples dried at 120 °C also served as controls. The swelling behavior of all wood samples was examined with respect to maximum swelling in water, anti-swelling efficiency (ASE), shrinkage, and dynamic water vapor sorption at relative humidity ranges of 0% to 95%. The thermal modification at 220 °C diminished swelling and moisture adsorption, and also reduced moisture increment and decrement compared with the unmodified control. However, it was less obvious than both acid pre-treated samples. Excess surface work and Hailwood-Horrobin results calculated from water vapor sorption studies demonstrated that, at comparable mass loss, the available sorption sites were reduced to a greater extent by Lewis acid and combination of Lewis and protonic acids pre-treatment than the sole thermal treatment. This was attributed to more pronounced degradation of polysaccharides, mainly hemicelluloses and amorphous parts of cellulose, and to cross-linking of cell wall polymers due to the acid pre-treatments.","number":"1","journal":"BioResources","author":[{"propositions":[],"lastnames":["Hosseinpourpia"],"firstnames":["Reza"],"suffixes":[]},{"propositions":[],"lastnames":["Adamopoulos"],"firstnames":["Stergios"],"suffixes":[]},{"propositions":[],"lastnames":["Mai"],"firstnames":["C"],"suffixes":[]}],"year":"2018","pages":"331–345","file":"Hosseinpourpia et al. - 2018 - Effects of Acid Pre-Treatments on the Swelling and.pdf:C\\:\\\\Users\\\\Eva\\\\Zotero\\\\storage\\\\6Q94SSII\\ősseinpourpia et al. - 2018 - Effects of Acid Pre-Treatments on the Swelling and.pdf:application/pdf","bibtex":"@article{hosseinpourpia_effects_2018,\n\ttitle = {Effects of {Acid} {Pre}-{Treatments} on the {Swelling} and {Vapor} {Sorption} of {Thermally} {Modified} {Scots} {Pine} ({Pinus} sylvestris {L}.) {Wood}},\n\tvolume = {13},\n\tabstract = {Scots pine sapwood samples were pre-treated with a Lewis acid (AlCl3) and a combination of Lewis and protonic acids (AlCl3 and H2SO4), and were subsequently exposed to respective temperatures of 180 °C and 120 °C for establishing a comparable mass loss with those impregnated with demineralized water and solely thermally modified at 220 °C. Water impregnated samples dried at 120 °C also served as controls. The swelling behavior of all wood samples was examined with respect to maximum swelling in water, anti-swelling efficiency (ASE), shrinkage, and dynamic water vapor sorption at relative humidity ranges of 0\\% to 95\\%. The thermal modification at 220 °C diminished swelling and moisture adsorption, and also reduced moisture increment and decrement compared with the unmodified control. However, it was less obvious than both acid pre-treated samples. Excess surface work and Hailwood-Horrobin results calculated from water vapor sorption studies demonstrated that, at comparable mass loss, the available sorption sites were reduced to a greater extent by Lewis acid and combination of Lewis and protonic acids pre-treatment than the sole thermal treatment. This was attributed to more pronounced degradation of polysaccharides, mainly hemicelluloses and amorphous parts of cellulose, and to cross-linking of cell wall polymers due to the acid pre-treatments.},\n\tnumber = {1},\n\tjournal = {BioResources},\n\tauthor = {Hosseinpourpia, Reza and Adamopoulos, Stergios and Mai, C},\n\tyear = {2018},\n\tpages = {331--345},\n\tfile = {Hosseinpourpia et al. - 2018 - Effects of Acid Pre-Treatments on the Swelling and.pdf:C\\:\\\\Users\\\\Eva\\\\Zotero\\\\storage\\\\6Q94SSII\\\\Hosseinpourpia et al. - 2018 - Effects of Acid Pre-Treatments on the Swelling and.pdf:application/pdf},\n}\n\n","author_short":["Hosseinpourpia, R.","Adamopoulos, S.","Mai, C"],"key":"hosseinpourpia_effects_2018","id":"hosseinpourpia_effects_2018","bibbaseid":"hosseinpourpia-adamopoulos-mai-effectsofacidpretreatmentsontheswellingandvaporsorptionofthermallymodifiedscotspinepinussylvestrislwood-2018","role":"author","urls":{},"metadata":{"authorlinks":{}},"downloads":0},"search_terms":["effects","acid","pre","treatments","swelling","vapor","sorption","thermally","modified","scots","pine","pinus","sylvestris","wood","hosseinpourpia","adamopoulos","mai"],"keywords":[],"authorIDs":[],"dataSources":["tc4oDEtdwbL9JNefD","QjjJQm7oEyT62dZPC"]}