ORIGINAL_ARTICLE
Variation of chemical and morphological properties of different parts of banana plant (Musa paradisica) and their effects on pulping
Chemical and morphological characterization of different parts of banana plant(Musa paradisica) (peduncle, leaf stalk and pseudo stem) were carried out in orderto assess their potentiality for chemical pulp. Each portion was tested forextractives, sodium hydroxide solubility, ash, lignin, cellulose and pentosancontents as well as their fiber length and width. These segmented parts werecharacterized as low amount of lignin (12.8–16.1%) and moderate amount of α-cellulose (31.6–43.3%) and relatively high amount of ash (7.6–19.1%), alkalisolubility (32.4-51.4%) and water solubility. The morphological properties of thebanana plant, in terms of fiber length and width were found to be a medium fiberwith high slenderness ratio. Kraft process was applied for the three portions ofbanana plant to evaluate pulp properties. At the optimal pulping (Active alkali22% for peduncle, 16% for leaf stalk and pseudo stem at 150 oC for 1 hour) pulpyields about 30.5–40.5% on oven dried (OD) raw material with kappa number from16.9 to 26.1 were obtained when cooking was carried out for 1 hour. Mechanicalproperties of the unbleached pulp showed a high tensile, tear and burst index forpseudo stem.
https://ijlp.gau.ac.ir/article_2065_0b17adad879006b91fe737d88123ce00.pdf
2014-12-01
93
103
10.22069/ijlp.2014.2065
Banana plant (Musa paradisica)
Chemical characteristics
Morphological
characteristics
Pulping
M. Mostafizur
Rahman
1
AUTHOR
Tohirul
Islam
2
AUTHOR
Jannatun
Nayeem
3
AUTHOR
M Sarwar Jahan
Jahan
4
LEAD_AUTHOR
ORIGINAL_ARTICLE
Optimized locating of fluting paper plant from agricultural residues using AHP (based on benefit and cost approach)
A suitable location plays an important role in the competitiveness of a plant inthe market and should be selected such that it allows access to strategic advantagescompared with other competitors. The aim of the current study was identificationoptimized location of fluting paper plant from agricultural residues in Mazandaranprovince using the Analytical Hierarchy Process (AHP). After performing pilotstudies, indices effective in selection of a place for establishing fluting paper plantwas identified in Mazandaran province; then, a hierarchy of indices and subindiceswere designed based on the benefit and cost structure; and finally, valueweightedindex of each of them was determined using questionnaire and dataanalysis in expert choice software medium. In the second stage, alternatives havebeen prioritized based on the benefits to costs ratio (B/C) in order to determine thebest place among the alternatives of east, west and center of the province. Resultsshow that the eastern part of Mazandaran province has the highest benefit to costratio and is the best place for establishing fluting paper plant from agriculturalresidues in Mazandaran province.
https://ijlp.gau.ac.ir/article_2068_67e43b4307359f850e43c85d09b26fc4.pdf
2014-12-01
104
120
10.22069/ijlp.2014.2068
Agricultural residues
Analytical Hierarchy Process
fluting paper
Mazandaran Province
A.
Barimani
1
LEAD_AUTHOR
A.
Ghasemian
2
AUTHOR
M.
Azizi
3
AUTHOR
S.M.
Zabizadeh
4
AUTHOR
ORIGINAL_ARTICLE
A novel method for manufacturing of wood flour/PP composites with better fire retardancy and mechanical properties
This study was conducted to investigate the effects of applying methods andamount of ammonium polyphosphate (0, 2 and 4 wt%) on fire retardancy andmechanical properties of wood flour/polypropylene composites. The resultsshowed that addition of fire retardant improved the mechanical properties such astensile and flexural strengths and fire retardancy of composites. But by increasingof fire retardant impact strength decreased. The scanning electron microscopyobservation on the fracture surface of the composites indicated that fire retardanthad a uniform dispersion in the wood flour/PP composites. The observationsshowed that saturation of wood flour with fire retardant had a positive effect onmechanical properties and fire retardancy.
https://ijlp.gau.ac.ir/article_2069_e4da2fa3f7c78133ad329fdb1f998d1c.pdf
2014-12-01
121
133
10.22069/ijlp.2014.2069
Fire retardancy
Mechanical properties
Saturation
A.
Khozeini
1
LEAD_AUTHOR
T.
Tabarsa
2
AUTHOR
M.
Mashkour
3
AUTHOR
ORIGINAL_ARTICLE
Investigation on mechanical properties of composite made of sawdust and high density polyethylene
In this research, the effect of wood species and particle size on mechanicalproperties of wood plastic composites (WPC) made of fir (Abies alba) and beech(Fagus orientalis L.) sawdust and high density polyethylene (HDPE) wereinvestigated. Wood plastic composite (WPC) were made with 30% HDPE in abatch process at 185˚C, at two particle sizes of 40 mesh and 80 mesh. Maleicanhydride polypropylene (MAPP) was used as a coupling agent. The MOE(modulus of elasticity) and MOR (modulus of rupture), maximum tensile strengthincreased with increasing particle size.
https://ijlp.gau.ac.ir/article_2070_fb30cb9f08e54b72e4fd7ce2a73a9e6d.pdf
2014-12-01
134
141
10.22069/ijlp.2014.2070
A.
Rafighi
1
LEAD_AUTHOR
A.
Dorostkar
2
AUTHOR
M.
Madhoushi
3
AUTHOR
ORIGINAL_ARTICLE
The effect of press temperature on properties of medium density fiberboard produced from Eucalyptus camaldulensis fibers
The target of this study was to investigate the possibility of MDF productionfrom Eucalyptus camaldulensis wood. MDF fibers were produced applying threelevels of steaming time. Laboratory MDF boards were produced using thegenerated fibers and different pressing temperature and time. Physical andmechanical properties of MDF panels were measured using relevant EU testmethods and were statistically analyzed based on factorial experiment. The resultsindicated that at longer steaming time, MOR of boards was reduced and the lowestvalue (16.2 MPa.) were measured on boards produced from fibers generatedapplying 15 min steaming time. The press temperature imposed statisticallysignificant effect on MOR, and increasing press temperature, increased MOR.Higher steaming time reduced the IB of boards as well as the thickness swellingand increasing steaming time from 7.5 to 15 min, decreased IB from 0.787 to 0.533MPa. The results of this study indicated that, the MOR and MOE of boardsproduced from Eucalyptus camaldulensis fibers meet the requirements of Irannational standard values and the internal bonding and thickness swelling ofboards are higher than the requirements.
https://ijlp.gau.ac.ir/article_2071_783ddd9cf6529eb88f7639ddedbd317b.pdf
2014-12-01
142
150
10.22069/ijlp.2014.2071
Eucalyptus camaldulensis
Medium Density Fiberboard
Press
temperature
Press time
Steaming time
A.
Kargarfard
1
LEAD_AUTHOR
A.
Jahan-Latibari
2
AUTHOR
ORIGINAL_ARTICLE
Assessing the flexural strength changes in decayed wood of Iranian beech (Fagus orientalis) by using of nondestructive stress wave method
The aim of this study was to evaluate sound and decayed wood of Iranianbeech (Fagus orientalis) with a nondestructive stress wave method. Wood samples,with dimensions of 9 by 19 by 200 mm were decayed in laboratory soil-bed tests,based on European pre-standard ENV-807. The decay was evaluated by measuringbending dynamic modulus of elasticity (MOEd) and longitudinal dynamicmodulus of elasticity (MOEd,l), using a NDT stress wave method after 6, 12, 18 and24 weeks of exposure. The static modulus of elasticity (MOEs) and percentage ofmass loss were also measured at the different stages of exposure. The results showthat both static and dynamic MOE measurements provide a more sensitive insightinto property changes from fungal degradation compared with mass losspercentages. In this regard MOEd is more reliable compared with MOEd,l. Therewas also a good correlation (r=0.97) between the MOEs and MOEd for both soundand decayed Iranian beech.
https://ijlp.gau.ac.ir/article_2072_4163798bcc26dff2c95779fa8ea0be79.pdf
2014-12-01
151
159
10.22069/ijlp.2014.2072
Beech
Decayed wood
Mechanical properties
Nondestructive stress
wave
M.
Madhoushi
1
LEAD_AUTHOR
M.
Hashemi
2
AUTHOR
M.P.
Ansell
3
AUTHOR
ORIGINAL_ARTICLE
Degradation analysis of lignocellulosic fillers infused coir epoxy composites in different environmental conditions
India has large resources of natural fibres such as Banana, Khus, Sisal, Korai grass,Talipot, Palm leaf, Coconut, Pineapple, Screwpine, Golden grass, Jute and Sabaiamong others. In the past, trade of the village folk depended on harvesting fibresgrown in their villages. Natural fibers have recently gaining attraction of researchersdue to their low cost eco-friendly and biodegradability characteristics they areexploited as a replacement for the conventional fibre, such as glass, aramid and carbon.Use of lignocellulosic fillers offers both cost saving and reduction in density ascompared to inorganic particulates. This paper deals with fabrication of compositesamples using coconut coir, epoxy resin (with hardener) and lignocellulosic particulatefillers such as cow dung, wheat husk and rice husk. after fabrication compositesamples were exposed to different environmental conditions such as ultravioletradiations, soil burial, high temperature, water (at room and high temperature) tostudy degradation behaviour of coir fiber reinforced epoxy composites filled withorganic lignocellulosic fillers. Composite samples were fabricated using compressionmoulding technique. Degradation was confirmed by change in mechanical properties(Tensile, flexural and impact strength) and microstructure.
https://ijlp.gau.ac.ir/article_2073_0e62188932ccb507c66767d99d178cbc.pdf
2014-12-01
160
179
10.22069/ijlp.2014.2073
Degradation studies
environmental conditions
Mechanical properties
Microstructure
S.
Dixit
1
LEAD_AUTHOR