Evaluation of Thailand bamboo and eucalyptus pulp in woodfree printing and writing paper | |
| Author | Chow Nontathai |
| Call Number | AIT Thesis no. PP-99-13 |
| Subject(s) | Bamboo-pulp industry Eucalyptus Paper industry |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | Woodfree printing and writing papers are produced from hardwood pulps, particularly from bleached eucalyptus laaft pulp. In Thailand the papermaking pulps are mainly produced from eucalyptus ( camaldulensis) and bamboo, also small amount from kenaf, rice straw and other raw materials. This research studies the different qualities of woodfree printing and writing paper made from Thai eucalyptus and bamboo pulps which are collected from Phoenix Pulp and Paper Co., Ltd compared to the well known pulps from other countries. The study was carried out in three parts, consisting of general properties of pulps analysis, standard beating testes and furnish test which use a different proportion of bleached softwood laaft pulp and filler (Aluminium Silicate) as process variables. The reference pulps used in this study are bleached hardwood kraft pulp (birch) and bleached eucalyptus laaft pulps from Portugal and South America. Softwood pulp used for reinforcement is mixed pine and spruce. From the. results of this research show that, eucalyptus pulp from Phoenix Pulp Mill gives excellent optical properties which is very important in woodfree printing and writing paper, especially when the paper is produced in low grammage. However it gives lower strength compared to other eucalyptus and birch pulps. Bamboo pulp gives higher strength properties compared to all eucalyptus pulp grades but its optical properties are inferior. The disadvantages of studied pulps can be compensated by using filler to improve optical properties and by using reinforcement pulp to improve strength. Because of these reasons eucalyptus pulp becomes the competitive pulp for woodfree printing and writing paper, but bamboo pulp is not acceptable as a major fibre component in high quality printing and writing paper. |
| Year | 1999 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| 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) | Malinen, Raimo 0. ; |
| Examination Committee(s) | Nazhad, Mousa M. ;Kolehmainen, Heikki; |
| Scholarship Donor(s) | Phoenix Pulp and Paper Co., Ltd. (Public) ; |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 1999 |