EFFECTS OF NANO-CELLULOSE AND RESINE ON MDF PROPERTIES PRODUCED FROM RECYCLED MDF USING ELECTROLISE METHOD

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SHEYKHI ZH.; TABARSA T.; MASHKOUR M.

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Journal: Journal of Wood and Forest Science and Technology Year:2016 | Volume:23 | Issue:3 Page(s): 271-288

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Title

EFFECTS OF NANO-CELLULOSE AND RESINE ON MDF PROPERTIES PRODUCED FROM RECYCLED MDF USING ELECTROLISE METHOD

Author(s)

SHEYKHI ZH. | TABARSA T. | MASHKOUR M. | Issue Writer Certificate

Keywords

RECYCLINGQ2

MDFQ2

ELECTROLYSIS METHODQ1

MODULUS OF RUPTUREQ2

THICKNESS SWELLINGQ2

Abstract

Background and objectives: Increasing of population and daily increasing of demand for wood products caused reduction in forest areas, so that concerning trees cut, serious regulations have been developed. Intensive pressure of Iranian environmental organization has seriously raised up the argument of harvesting stop and amount of wood harvested from forests has lowered to less than one million cubic meters. Therefore, wood industry is facing wood shortcoming. (12).The aim of this study was to recycle fibers from waste panels applying ecofriendly ELECTROLYSIS METHOD and reusing them for MDF production.Method and Materials: In this study, first waste wood panels of MDF were collected from several firms. Waste panels were cut into small pieces and immersed in hot water for 24 hours. Immersing was conducted in order to penetration of water into the waste MDF before Ohmic heating. Small pieces of wet MDF were placed in a cylinder equipped with electrical steel electrodes. Rectangular electrodes were fixed parallel to each other in the side walls of cylinder. After 45 minutes, MDF fibers were separated by hydrolysis. In order to increase electrical conduction, some salt was added to the mixture. Obtained fibers were separated and dried and mixed with fresh fibers provide by a local firm (up to 30% of oven dry weight of total fibers) for board producing. UF resin was modified by adding nano- cellulose at three levels of 0, 1 and 3 percent. Resin UF was applied at two levels of 8 and 12 percent.Findings: Manufacturing parameters such as press temperature of 160 degree centigrade and press time of 8 minutes were kept constant for all treatments. Physical properties of THICKNESS SWELLING (TS) and water absorption (WA) after 2 and 24 hours water immersing in water and mechanical properties of internal bond (IB), MODULUS OF RUPTURE (MOR) and modulus of elasticity (MOE) of boards were evaluated. The results showed that the highest MODULUS OF RUPTURE (14.47Mpa) and modulus of elasticity (1359.096 MPa) of the boards made with 12% glue and 3% nano- cellulose was, as well as the highest internal bonding in the boards made with 12% glue and 3% nano- cellulose was (0.5 MPa). The least amount of THICKNESS SWELLING (%4.720 and %9.863 after 2 and 24 hours floatation on water respectively) was observed in boards made with 12% glue and 3% nano- cellulose. As well the least amount of water absorption (%33.113 and %80.653 after 2 and 24 hours floatation on water respectively) was observed in boards made with 12% glue and 3% nano- cellulose.Conclusion: Statistical analysis of results was conducted using SPSS 16. Results showed that recycled fibers have suitable quality. It is possibility to reuse it mixed with fresh fibers. Manufacture board properties, however, are not as high as standard. Adding nano-cellulose into UF glue caused an improvement in mechanical properties and water absorption and THICKNESS SWELLING were decreased.

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APA: Copy

SHEYKHI, ZH., TABARSA, T., & MASHKOUR, M.. (2016). EFFECTS OF NANO-CELLULOSE AND RESINE ON MDF PROPERTIES PRODUCED FROM RECYCLED MDF USING ELECTROLISE METHOD. JOURNAL OF WOOD AND FOREST SCIENCE AND TECHNOLOGY, 23(3), 271-288. SID. https://sid.ir/paper/156779/en

Vancouver: Copy

SHEYKHI ZH., TABARSA T., MASHKOUR M.. EFFECTS OF NANO-CELLULOSE AND RESINE ON MDF PROPERTIES PRODUCED FROM RECYCLED MDF USING ELECTROLISE METHOD. JOURNAL OF WOOD AND FOREST SCIENCE AND TECHNOLOGY[Internet]. 2016;23(3):271-288. Available from: https://sid.ir/paper/156779/en

IEEE: Copy

ZH. SHEYKHI, T. TABARSA, and M. MASHKOUR, “EFFECTS OF NANO-CELLULOSE AND RESINE ON MDF PROPERTIES PRODUCED FROM RECYCLED MDF USING ELECTROLISE METHOD,” JOURNAL OF WOOD AND FOREST SCIENCE AND TECHNOLOGY, vol. 23, no. 3, pp. 271–288, 2016, [Online]. Available: https://sid.ir/paper/156779/en

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