onr:"swepub:oai:DiVA.org:kth-5372"
Sökning: onr:"swepub:oai:DiVA.org:kth-5372" > Towards a new conce...
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| Fältnamn | Indikatorer | Metadata |
|---|---|---|
| 000 | 02767naa a2200433 4500 | |
| 001 | oai:DiVA.org:kth-5372 | |
| 003 | SwePub | |
| 008 | 060214s2004 | |||||||||||000 ||eng| | |
| 024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-53722 URI |
| 024 | 7 | a https://doi.org/10.1016/j.crvi.2004.03.0112 DOI |
| 040 | a (SwePub)kth | |
| 041 | a engb eng | |
| 042 | 9 SwePub | |
| 072 | 7 | a ref2 swepub-contenttype |
| 072 | 7 | a art2 swepub-publicationtype |
| 100 | 1 | a Gellerstedt, Göranu KTH,Fiber- och polymerteknologi4 aut0 (Swepub:kth)u1pqzekk |
| 245 | 1 0 | a Towards a new concept of lignin condensation in kraft pulping. Initial results |
| 264 | 1 | b Elsevier BV,c 2004 |
| 338 | a print2 rdacarrier | |
| 500 | a QC 20101004 | |
| 520 | a In kraft pulping, a comparatively large amount of lignin remains in the fibres after the cook. Based on various analytical techniques for lignin, such as thioacidolysis, GPC and NMR, it is suggested that lignin condensation reactions take place during the cook. The reaction seems, however, not to involve ionic intermediates as has been suggested previously but rather a one-electron mechanism with elemental sulphur as the initiator. Support for such a reaction has been found through kraft cooks in the presence of an added phenol, 2,6-xylenol, as well as through NMR analysis of kraft lignin. It was found that the added phenol is incorporated in the pulp lignin with linkages indicative of radical coupling. Furthermore, kraft lignin was found to contain substantial amounts of chemically linked fatty acids. By complementary analyses of sulphur and polysulphide in an industrial black liquor, the presence of these compounds throughout a kraft cook was demonstrated. | |
| 650 | 7 | a TEKNIK OCH TEKNOLOGIERx Materialteknikx Pappers-, massa- och fiberteknik0 (SwePub)205032 hsv//swe |
| 650 | 7 | a ENGINEERING AND TECHNOLOGYx Materials Engineeringx Paper, Pulp and Fiber Technology0 (SwePub)205032 hsv//eng |
| 653 | a Condensation | |
| 653 | a Electron transfer reactions | |
| 653 | a Fatty acids | |
| 653 | a GPC | |
| 653 | a Kraft pulping | |
| 653 | a NMR analysis | |
| 653 | a Phenols | |
| 653 | a Thioacidolysis | |
| 653 | a Cellulose and paper engineering | |
| 653 | a Cellulosa- och pappersteknik | |
| 700 | 1 | a Majtnerová, Andreau KTH,Fiber- och polymerteknologi4 aut0 (Swepub:kth)u1qmwtl6 |
| 700 | 1 | a Zhang, Limingu KTH,Fiber- och polymerteknologi4 aut0 (Swepub:kth)u16k1pmb |
| 710 | 2 | a KTHb Fiber- och polymerteknologi4 org |
| 773 | 0 | t Comptes rendus. Biologiesd : Elsevier BVg 327:9-10, s. 817-826q 327:9-10<817-826x 1631-0691x 1768-3238 |
| 856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-5372 |
| 856 | 4 8 | u https://doi.org/10.1016/j.crvi.2004.03.011 |
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