Evaluation of plantation woods on the basis of lignin degradability | |
| Author | Supachineekan Tanaruangamorn |
| Call Number | AIT Thesis no.PP-14-03 |
| Subject(s) | Lignin Pulping |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Pulp and Paper Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. PP-14-03 |
| Abstract | Chemical structure of lignin basically decides the chemical reactivity of lignin. Guaiacyl aromatic nucleus and s yringyl aromatic nucleus of lignin - O - 4 type can decide the degradability of lignin during pulping. This research aimed to analyze lignin components of various plantation woods and to establish the relationship between lignin compositions and pulp performance. 14 samples of Eucalyptus which are difference clone, growing site, and age were investigated wi th a specific focus on the aromatic nucleus of lignin , total lignin content, and carbohydrate composition. The results show that t he pulpability u nder the alkalin e delignification conditions of woods varies widely depending on clone, growing site, and age because they contain different Klason lignin, acid soluble lignin, lignin aromatic nucleus, and sugar components. Compared with the same clone but different age , 7 years old wood has better pulpability than 9 years old wood because it contains l ower lignin content, higher acid - soluble lignin , higher syringyl aromatic nucleus , and higher cellulose . However, f rom the point of lignin structure and lignin content, these sa mples behave as softwood due to syringyl to vanillin ratio is very low and total lignin content is very high. Thus, the pulpability of this samples is not good owning to lignin in woods is hard to degrade. |
| Year | 2014 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. PP-14-03 |
| Type | Thesis |
| School | School of Environment, Resources, and Development |
| Department | Department of Food, Agriculture and Natural Resources (Former title: Department of Food Agriculture, and BioResources (DFAB)) |
| Academic Program/FoS | Pulp and Paper Technology (PP) |
| Chairperson(s) | Nguyen Thi Kim Oanh;Matsumoto, Yuji |
| Examination Committee(s) | Bohez, Erik L.J. |
| Scholarship Donor(s) | AIT Fellowship |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 2014 |