The effect of tannin ratio and pH on the physical properties of Eucalyptus tannin phenol formaldehyde (ETPF)
The current increase oil prices has intensified the efforts to seek for renewable resources to be converted into biopolymers .Tannin can alternatively replace phenol (partial or full substitution) in adhesive. Because of their polyphenolic structure tannins have a range of actual and potential us...
| Main Author: | |
|---|---|
| Format: | Project Paper Report |
| Language: | English |
| Published: |
2018
|
| Online Access: | http://psasir.upm.edu.my/id/eprint/91197/1/FH%202018%2068%20IR.pdf |
| _version_ | 1825936977684332544 |
|---|---|
| author | Bahrum, Nor Amanina |
| author_facet | Bahrum, Nor Amanina |
| author_sort | Bahrum, Nor Amanina |
| collection | UPM |
| description | The current increase oil prices has intensified the efforts to seek for renewable resources to be
converted into biopolymers .Tannin can alternatively replace phenol (partial or full
substitution) in adhesive. Because of their polyphenolic structure tannins have a range of
actual and potential uses. This study evaluates the properties of tannin from Eucalyptus tree
bark for adhesive application. The results show that Eucalyptus tannin has suitable properties
for adhesive: pH 13.2; gel time 23.3 min ; and viscosity 45.6 cP. The effect of the tannin
content on the bonding properties of the Eucalyptus tannin phenol formaldehyde (ETPF).
Subsequently for the bonding properties, phenol formaldehyde (PF) and ETPF 3-layer
plywood boards were fabricated from mixed light hardwood (MLHW) veneers. The veneers
were spread with the adhesive at 200 g/m2
single glue line. Veneers with tannin phenol
formaldehyde resin were assembled and hot pressed at 130 for 7 min. The controls PF resin
assembled were pressed at 140 ̊C for 6 min. The testing procedure based on BS EN 314 in
order to proof the bonding quality by means of shear strength. The results of the shear test
showed that the plywood bonded with ETPF met the requirement the EN 314 standard higher
than 1.0 Mpa. It was conclude that Eucalyptus tannin can be used as partial replacement for
PF adhesive. |
| first_indexed | 2024-03-06T10:52:30Z |
| format | Project Paper Report |
| id | upm.eprints-91197 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T10:52:30Z |
| publishDate | 2018 |
| record_format | dspace |
| spelling | upm.eprints-911972021-11-01T01:29:29Z http://psasir.upm.edu.my/id/eprint/91197/ The effect of tannin ratio and pH on the physical properties of Eucalyptus tannin phenol formaldehyde (ETPF) Bahrum, Nor Amanina The current increase oil prices has intensified the efforts to seek for renewable resources to be converted into biopolymers .Tannin can alternatively replace phenol (partial or full substitution) in adhesive. Because of their polyphenolic structure tannins have a range of actual and potential uses. This study evaluates the properties of tannin from Eucalyptus tree bark for adhesive application. The results show that Eucalyptus tannin has suitable properties for adhesive: pH 13.2; gel time 23.3 min ; and viscosity 45.6 cP. The effect of the tannin content on the bonding properties of the Eucalyptus tannin phenol formaldehyde (ETPF). Subsequently for the bonding properties, phenol formaldehyde (PF) and ETPF 3-layer plywood boards were fabricated from mixed light hardwood (MLHW) veneers. The veneers were spread with the adhesive at 200 g/m2 single glue line. Veneers with tannin phenol formaldehyde resin were assembled and hot pressed at 130 for 7 min. The controls PF resin assembled were pressed at 140 ̊C for 6 min. The testing procedure based on BS EN 314 in order to proof the bonding quality by means of shear strength. The results of the shear test showed that the plywood bonded with ETPF met the requirement the EN 314 standard higher than 1.0 Mpa. It was conclude that Eucalyptus tannin can be used as partial replacement for PF adhesive. 2018 Project Paper Report NonPeerReviewed text en http://psasir.upm.edu.my/id/eprint/91197/1/FH%202018%2068%20IR.pdf Bahrum, Nor Amanina (2018) The effect of tannin ratio and pH on the physical properties of Eucalyptus tannin phenol formaldehyde (ETPF). [Project Paper Report] |
| spellingShingle | Bahrum, Nor Amanina The effect of tannin ratio and pH on the physical properties of Eucalyptus tannin phenol formaldehyde (ETPF) |
| title | The effect of tannin ratio and pH on the physical properties of Eucalyptus tannin phenol formaldehyde (ETPF) |
| title_full | The effect of tannin ratio and pH on the physical properties of Eucalyptus tannin phenol formaldehyde (ETPF) |
| title_fullStr | The effect of tannin ratio and pH on the physical properties of Eucalyptus tannin phenol formaldehyde (ETPF) |
| title_full_unstemmed | The effect of tannin ratio and pH on the physical properties of Eucalyptus tannin phenol formaldehyde (ETPF) |
| title_short | The effect of tannin ratio and pH on the physical properties of Eucalyptus tannin phenol formaldehyde (ETPF) |
| title_sort | effect of tannin ratio and ph on the physical properties of eucalyptus tannin phenol formaldehyde etpf |
| url | http://psasir.upm.edu.my/id/eprint/91197/1/FH%202018%2068%20IR.pdf |
| work_keys_str_mv | AT bahrumnoramanina theeffectoftanninratioandphonthephysicalpropertiesofeucalyptustanninphenolformaldehydeetpf AT bahrumnoramanina effectoftanninratioandphonthephysicalpropertiesofeucalyptustanninphenolformaldehydeetpf |