izpis_h1_title_alt

Analiza termično modificiranega lesa z infrardečo spektroskopijo in termično analizo : diplomsko delo (univerzitetni študij)
ID Lesar, Boštjan (Author), ID Pohleven, Franc (Mentor) More about this mentor... This link opens in a new window, ID Tišler, Vesna (Reviewer)

.pdfPDF - Presentation file, Download (730,32 KB)
MD5: AB981A4DD80FCB13E87C225474397E4A
PID: 20.500.12556/rul/6097c57f-a14e-406b-a2fd-1d18b8058c80

Abstract
Vzorce smreke in jelke smo modificirali v vakuumu pri temeperaturah od 170 do 215 °C. Modificiranim vzorcem smo določili izgubo mase, ki je posledica termične obdelave. Posneli smo infrardeče spektre termično modificiranih in kontrolnih vzorcev v transmisijski tehniki. V dobljenih spektrih smo izmerili površine posameznih trakov ter jih primerjali z referenčnima trakovoma pri 2900 in 1510 cm(na-1), tako da smo dobili relativne površine posameznih trakov, ki smo jih primerjali z izgubo mase pri termični modifikaciji. Ugotovili smo, da obstaja linearna povezava pri trakovih: 1636, 1605, 1035 in 897 cm(na-1). Termično analizo smo izvajali na kontrolnih vzorcih in vzorcih smreke, modificiranih pri temperaturah 190 in 210 °C. Izgubo mase, ki smo jo zabeležili pri termični analizi, smo primerjali s tisto pri termični modifikaciji in ugotovili, da sta v linearni odvisnosti. Z naraščanjem izgube mase vzorcev, kot posledico termične modifikacije, se zmanjšuje izguba mase pri termični analizi.

Language:Slovenian
Keywords:termična modifikacija lesa, infrardeča spektroskopija, termična analiza
Work type:Undergraduate thesis
Typology:2.11 - Undergraduate Thesis
Organization:BF - Biotechnical Faculty
Place of publishing:Ljubljana
Publisher:[B. Lesar]
Year:2005
Number of pages:XI, 60 f.
PID:20.500.12556/RUL-80 This link opens in a new window
UDC:630*841
COBISS.SI-ID:1272457 This link opens in a new window
Publication date in RUL:11.07.2014
Views:2438
Downloads:446
Metadata:XML RDF-CHPDL DC-XML DC-RDF
:
Copy citation
Share:Bookmark and Share

Secondary language

Language:English
Title:Analysis of thermal modified wood with infrared spectroscopy and thermal analysis : graduation thesis (university studies)
Abstract:
Spruce and fir samples were thermally modified in vacuum at temperatures from 170 to 215 °C. The mass losses caused by heat treatment were evaluated for modified samples. FTIR spectra of the heat treated and control samples were recorded in the transmision technique. In these spectra, the areas of single bands were measured and compared to the reference bands at 2900 and 1510 cm-1 to get the relative areas of single bands. Relative areas were then compared to the mass loss caused by thermal modification, and a linear relationship was observed for bands at 1636, 1605, 1035 and 897 cm-1. TG was also used for analysis of control spruce samples and samples modified at 190 and 210 °C. Mass losses observed by thermal analysis between 100 and 800 °C are linearly proportional with the mass losses caused by a heat treatment. Increasing the mass loss caused by a heat treatment the mass loss detected by the thermal analysis decreases.

Keywords:thermal modification of wood, infrared spectroscopy, thermal analysis

Similar documents

Similar works from RUL:
Similar works from other Slovenian collections:

Back