This material might be useful as an extender or replacement for wood in composite panel products. However, it can be useful for preventing soil erosion in deserts and non-agricultural fields. While there are no estimates of the volumes available in Iran, it is considered a weed in agricultural field. Camel-thorn is a spiny shrub that forms large patches by vegetative propagation by rhizomes (underground stems). These materials have differing effects on panel properties and any substitute must be thoroughly explored to ensure that it is compatible with the production process and results in a panel with acceptable material properties.Д¬amel-thorn ( Alhagi maurorum) is a native plant of Western Europe and central Asia that has become an agricultural weed that competes for nutrients with crop plants. Potential natural or synthetic fibers, such as kenaf fibers, rice straw, chicken-feather, and glass fibers have been explored for these applications (Joshi et al. A shortage of raw materials in some regions has stimulated a search for new fiber sources for panel production. 2007, Zini & Scandola 2011, Nayeri et al. While solid wood is generally preferred for most applications, a variety of composite panels have emerged to allow for production of larger dimension materials from a variety of lignocellulosic materials (Xing et al. However, natural regeneration of trees cannot satisfy the growing demand for this raw material in some parts of the world. Wood is a valuable material that can be used in a variety of applications. Keywords: Camel-thorn weed, minerals, nano-materials, particleboard, thermal conductivity coefficient, wollastonite, wood-composite. A combination of 10% camel-thorn and 5% wollastonite fibers produced panels with the best properties. Up to 10 % camel-thorn could be added to panels without negative effects.

Wollastonite fibers significantly improved most of the physical and mechanical properties while addition of camel-thorn produced more variable effects on panel properties. Approximately 30 % of the wollastonite fibers were less than 100 nm while the remainder were less than 1 Ојm. The effects of wollastonite fibers on the physical and mechanical properties of medium-density fiberboards composed of wood fibers with up to 10 % camel-thorn chips were studied. Morrell 2ДЎ Wood Science and Technology Department, Faculty of Civil Engineering, Shahid Rajaee Teacher Training University, Lavizan, Shabanloo St., Tehran, Iran.Дў Department of Wood Science & Engineering, College of Forestry, Oregon State University, Corvallis, Oregon, USA. Taghiyari 1,в™ , Behrooz Mohammad-Panah 1, Jeffrey J. Effects of wollastonite on the properties of medium-density fiberboard (MDF) made from wood fibers and camel-thorn

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