| Author | Rahman, Molla Md. Hafizur |
| Call Number | AIT RSPR no. PP-01-03 |
| Subject(s) | Paper industry
|
| Note | A research 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 |
| Abstract | The effect of formation, on mechanical and optical properties of paper was studied based on
furnished variables. Bleached muli bamboo (Melocanna Baccifera), eucalyptus, acacia,
bagasse, mixed tropical hardwood and pine were used as raw material. Bamboo pulp was
mixed with other pulps at a ratio of 80:20. Nonrefined bamboo pulp were fractionated by
using Bauer- McNett Fiber Fractionation into four fiber length fractions. The fined fraction
which goes through 200 mesh screen was collected and mixed with long fiber fraction.
Fiber length and coarseness were measured for all separate, mixed and bamboo pulp fractions.
Pulps were refined in laboratory PFI mill at about 20° to 30° SR. Standard laborat01y hand
sheets (0.017%) and headbox consistency hand sheets were made from individual and mixed
pulps. Higher than headbox consistency (0.06%) hand sheets were made from mixed pulps
and paper properties were compared with headbox consistency hand sheets.
Two sets of hand sheets of hand sheets by mixing with bamboo (main constituent) with mixed
tropical hardwood and pine pulp. Pulps were refined at about 20° to 30° SR, 10% and 20 %
filler were added. Headbox consistency hand sheets were made and paper properties were
compared with machine made paper.
Paper with better formation demonstrates higher strength properties except tear resistance.
Formation and optical properties improve with decreasing fiber length. Increasing pulp
consistency has bad effect on formation and tensile properties but increase tear resistance and
light scattering coefficient.
Mixing of long short and fine fraction (R30 + R200 + P200) of bamboo pulp do not improve
formation, strength nor optical properties except tear strength. Mixed middle fraction gives
better formation, optical property and smoothuess than bamboo pulp but strength properties
little bit lower than bamboo pulp.
Mill made paper have better formation and all other properties than headbox consistency hand
sheets, except tear resistance. |
| Year | 2001 |
| Type | Research Study Project Report (RSPR) |
| 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) | Retulainen, Elias ; |
| Examination Committee(s) | Kolehmainen, Heikki ;Nazhad, . Mousa M.; |
| Scholarship Donor(s) | Government of Finland ; |
| Degree | Research Studies Project Report (M. Eng.) - Asian Institute of Technology, 2001 |