Properties of paper sheets prepared from in-situ synthesis of cuprite in wood pulp fibers
Properties of paper sheets prepared from in-situ synthesis of cuprite in wood pulp fibers
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DOI：
10.1080/00914030214763
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发表时间：
2002-01
影响因子：
3.2
通讯作者：
A. Basta;N. A. Fadl;S. Abd-El-Messieh
中科院分区：
文献类型：
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作者：
A. Basta;N. A. Fadl;S. Abd-El-Messieh
以木浆纤维中的氧化铜为原料，采用原位合成法制备了木浆-铜矿复合纸板，研究了其对纸浆阻燃性能的影响。研究了硫酸铜用量、还原碳水化合物用量、pH值、温度和羧甲基纤维素量等因素，得出了在保持或改善纸页强度的前提下形成铜(I)O的最佳条件。X-射线衍射仪用于鉴定纤维中铜(I)O的形成，而傅立叶变换红外光谱分析则用于阐明铜(I)O在纤维中的行为。测试了纸页的交流电导率(σ)、介电常数(L‘)和介电损耗(L“)等电性能，并用非等温热重法研究了纸页的热降解行为，用Coats方程和Redfern方程估算了热降解动力学参数.结果表明，铜矿的生成量与纸页的机械和电学性能有很好的关系.木浆纤维中铜矿的形成改善了纸页的阻燃性能，而在铜矿形成过程中加入CMC则减弱了这种影响.
Wood pulp-cuprite paper sheets were prepared from in-situ synthesis of copper(I)-oxide in wood pulp fibers, to study its effect on fire retardant property. Factors such as the amount of copper sulfate, amount of reducing carbohydrate, pH-value, temperature and the amount of carboxymethyl cellulose were studied to derive the optimum conditions for the formation of Cu(I)O with maintaining or improving the strength properties of the prepared paper sheets. The X-ray diffraction was used to identify the formation of Cu(I)O inside the fibers; while FTIR-spectroscopy analysis was used to clarify the behaviour of Cu(I)O inside the fibers. The electrical properties of the prepared paper sheets, e.g., AC-conductivity ( σ ), dielectric constant ( l ') and dielectric loss ( l ") were also examined. The thermal degradation behaviour of some prepared paper sheets has been studied by means of non-isothermal thermogravimetric analysis, and the kinetic parameters were estimated by using Coats and Redfern equation. The results obtained show a good relation between the amount of formed cuprite with the mechanical and electrical properties of the produced sheets. The formation of cuprite in wood pulp fibers improves the fire retardants property of the paper sheets; while the addition of CMC during cuprite formation diminishes this effect.