Comparison of mixed and separate cooking of bamboo and Acacia hybrid chips from Vietnam for fine paper | |
| Author | Hoang Van Thanh |
| Call Number | AIT Thesis no.PP-04-13 |
| Subject(s) | Bamboo-pulp industry--Vietnam Kraft paper--Vietnam Papermaking--Vietnam Pulping--Vietnam |
| 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-04-13 |
| Abstract | Bamboo is important raw material in pulp and paper industry in many tropical countries. Nowadays, the trend to move to use plantation hardwood increasing, especially; A. hybrid is getting more and more attention in Vietnam. This study investigated to compare the mixed and separate cooking of the bamboo and A. hybrid industrial chips from Vietnam for fine paper. These chips were classified and cleaned for cooking. The mixed cooking was done at three rates of bamboo and the mixed and separate cooking was carried out at three EA charges. All pulps went tlu·oughout the oxygen delignification and Do-Eop-D1 bleaching. The mixed and separate refining was taken place at three revolutions in PFI Mill. When separately pulping, the A. hybrid has higher pulping and papermaking potential except lower tear strength and bending resistance than those of bamboo. When the mixed cooking pulps compared to the separate cooking pulps, the yields were higher; kappa number, viscosity and brightness were lower; more refining, better formation and tensile strength but lower light scattering coefficient, higher roughness, higher apparent density, and lower bending resistance. Difference is bigger on lower effective alkali charge. The properties of pulps having 40 % were the most suitable for fine paper. The separate refining pulps had higher tear strength, higher apparent density but worse formation, lower light scattering coefficient, higher roughness, lower bending resistance and tensile strength. Credibility of yield results is not best possible. Yield determination was not due in correct way and some pulps especially bamboo might have lost in screening. |
| Year | 2004 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. PP-04-13 |
| 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) | Kolehmainen, Heikki; |
| Examination Committee(s) | Lehtinen, Esa;Malinen, Raimo 0. ; |
| Scholarship Donor(s) | Government of Japan;Asian Institute of Technology Fellowship; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2004 |