مجله صنایع چوب و کاغذ ایران
سال چهاردهم شماره 2 (تابستان 1402)

This study was conducted with the aim of investigating the effect of heat treatment on the physical, chemical and anatomical properties of date palm tissue. After cutting the trunk of date palm, in order to choose the most optimal temperature, heat modification was done at 10 different temperatures between 120 and 210 degrees Celsius for 2 hours. In order to evaluate the changes made, microscopic examination and then standard tests of density, chemical properties and FTIR-spectroscopy were performed. Anatomical examination showed that after thermal modification at the optimal temperature (160 °C), cracks and black spots were observed in the vascular cavities. This modification leads to fundamental changes in the morphological structure of the tissue. Modification in the temperature range of 160 °C caused slight changes in the density of date palm wood. But with the increase of thermal modification at a temperature higher than that, the known amount decreased significantly. FTIR spectroscopic analysis of date palm tissue showed chemical changes after modification. The bands showed the changes in the amount of hydroxyl functional groups in cellulose and the progress of the lignin condensation reaction. Thermal modification of palm tissue improves its functional properties and can be called as an environmentally friendly modification method to make palm usable in the furniture industry.

Paper is a strategic commodity, an important role in economic, cultural, social growth and development, and one of the developed indicators of the country. Paper production technologies are under development due to complexity and capital cost. Most developing countries use technology transfer to meet their common technology needs. The paper industry is one of the industries that the country needs advanced technology to compensate for its backwardness in meeting the country's need for paper, especially printing and writing paper. Therefore, in addition to the fact that technology is necessary and transferable, technology acquisition strategy also plays an important role in this field. In this research, the strategies and methods of technology transfer are identified according to the indicators and indicators of technology transfer in the paper industry, in this way, by studying the library and using the opinions of experts in the paper industry, using the fuzzy Delphi method, by determining the indicators suitable and scoring indicators. Determined and their prioritization with different decision making models (fuzzy decision making and Prometheus), determines the appropriate method of technology acquisition strategy in the paper industry. According to the obtained results, three foreign investment strategies, turnkey method and company creation, are the highest priorities of technology acquisition methods. However, foreign direct investment strategy is the best technology acquisition method in the paper industry.