Kraft pulping of Cocos nucifera coir and trunk | |
| Author | Sugiyanto |
| Call Number | AIT Thesis no.PP-07-15 |
| Subject(s) | Kraft paper industry Coconut products Coir Plant fiber industry |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Pulp and Paper Technology |
| Publisher | Asian Institute of Technology |
| Abstract | The aim of this thesis was to evaluate the suitability of coconut plant as a main raw material for pulp and papermaking. In these experiments coconut coir and coconut trunk were pulped by kraft pulping. This experiment aimed to find suitable cooking conditions by changing chemical charge and liquid to chips ratio. To assess the papermaking potential of coconut pulps, the study was conducted to examine fiber characteristics, pulpability, bleachability, and physical properties of coconut pulps. Coconut coir fiber has similar characteristic to hardwood (short fiber) and coconut trunk fiber has similar characteristic to softwood (long fiber). Lignin content of coconut coir is around 40%. Yield achieved in coconut trunk and coconut coir (with and without coir dust) cookings were around 30% (for coconut coir without dust removal) and 40% (for coconut coir after dust removal and coconut trunk). The pulps were bleached using Elemental Chlorine Free sequence and brightness achieved was around 85% ISO. The applied bleaching sequence was DO-Eop-D1. Coconut trunk pulp was easier to be beaten than coconut coir pulp. Coconut trunk pulp has higher tensile strength index than of eucalyptus and coconut coir pulp, but lower tear strength index than of eucalyptus and coconut coir pulp. |
| Year | 2007 |
| 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 O. |
| Examination Committee(s) | Lehtinen, Esa;Nazhad, Mousa M.; |
| Scholarship Donor(s) | Finland;AIT Fellowship; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2007 |