木质素酚复合纸张的制备及性能表征

摘要

In this study, lignophenol was separated from bamboo (Sinocalamus Affinis) using phase separation system, different concentrations of lignophenol acetone solution were used to impregnate hardwood pulp ifber sheets (80 g/m2). The result showed that the properties including tightness, tensile index, tear index and burst index of sheets impregnated with lignophenol acetone solution (80g/l) increase 5.66%, 160.08%, 93.66% and 140% respectively, compared with the sheets without lignophenol. The function and dispersion between lignophenol and hardwood pulp ifber in the sheets impregnated in 80g/l acetone solution were characterized by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and total relfectance Fourier transform infrared spectroscopy (ATR-FTIR) respectively. The results indicated that lignopheol uniformly adhere on the pulp ifbers, but no chemical bond was found between them. Meanwhile, recycled softwood pulp ifber sheets and softwood pulp ifber sheets (80 g/m2) were impregnated with the 80g/l lignophenol acetone solution, more obvious improvement in physical strength was found in sheets made up of hardwood pulp fibers but both of physical strength had been improved when compared with original sheets. Pulp fiber sheets combined with lignophenol were made by using the lignophenol acetone solution to impregnate sheet, which not only improves the physical strength of composite sheets but also increases the potential for hydrophobic modiifcation of sheets.%以相分离法制备慈竹木质素酚，采用不同浓度的木质素酚丙酮溶液浸渍阔叶浆纸张(80g/m2)，发现阔叶浆纸张经80g/l浓度的木质素酚丙酮溶液浸渍后的紧度、抗张指数、撕裂指数和耐破指数比原纸分别提高了5.66%、160.08%、93.66%和140.00%。采用扫描电子显微镜(SEM)、X射线光电子能谱(XPS)和全反射傅里叶红外光谱(ATR-FTIR)，对此溶液浓度条件下制备的木质素酚-阔叶浆纸张中木质素酚和纤维之间的作用力和分散效果进行表征。发现木质素酚均匀地附着在纸浆纤维上，但尚未发现两者之间存在化学作用。相同条件下用木质素酚丙酮溶液处理针叶浆二次纤维（废纸）纸张和针叶浆原浆纸张(80g/m2)时，发现木质素酚对这两种纸张物理性能的改善程度虽低于阔叶浆纸张，但和各自对应的原纸相比都有所提升。木质素酚复合纸张是通过木质素酚溶液与纸张浸渍复合而成，这种简单的工艺既提高了复合后纸张的物理性质，又增加了纸张的疏水改性潜力。