Effect of cooking conditions on bulk and other properties of paper based on Acacia kraft pulp | |
| Author | Johannes P. Lingga |
| Call Number | AIT Thesis no.PP-04-04 |
| Subject(s) | Pulping Mangium Acacia |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. PP-04-04 |
| Abstract | Acacia Mangium chips were cooked under different cooking condition, alkali charge as EA was increased from 18% to 21% and 24%, under temperature 165°C and 175°C, cooking time 95 min. and 105 min. while sulphidity was also varied from 25%, 30% and 35%. Oxygen delignification were done under different alkali charges, 1.75% and 2.5%, while bleaching follows DE(O)DD sequence. Kappa, viscosity and yield were recorded. Bulk, strength and optical prope1ties of unrefined, 2000, 4000 and 6000 revolution refined pulp were tested and analyzed. Ratio of alkali to sulphide affects most of handsheet properties. Higher EA to sulphidity ratios increases bulk, bending stiffness and light scattering but decreases tensile, and tear. Higher temperature has resulted higher bulk and lower tensile strength. Cooking time has less effect on the handsheet prope1ties. Increasing NaOH charge during oxygen delignification suffers the fiber bulk but increases the strength. |
| Year | 2004 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. PP-04-04 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Pulp and Paper Technology (PP) |
| Chairperson(s) | Malinen, Raimo O. |
| Examination Committee(s) | Kolehmainen, Heikki;Lehtinen, Esa |
| Scholarship Donor(s) | Government of Finland;AIT Fellowship |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2004 |