生物酶法竹渣填料的制备及其抄纸应用性能研究

Research on the Preparation of Bamboo Residue Filler via Bio-enzymatic method and Its Papermaking Application Performance

关键词:  生物酶  制备  竹渣  纸张性能  湿部性能  填料

Key Words:biological enzyme  preparation  bamboo residue  paper properties  wet-end properties  fillers

摘要:本研究以竹渣为原料，采用生物酶法制备生物质造纸填料，探究了生物酶法制备竹渣填料的工艺参数、预处理后竹渣填料的物化性能，考察了竹渣填料添加量对纸张物理强度和抄纸湿部性能的影响。结果表明，生物酶法制备竹渣填料的适宜条件为：生物酶用量0.02%（对竹渣绝干质量），pH值6.5，温度65℃，处理时间1 h，在该条件下竹渣溶出物为6.8%；生物酶法制备竹渣填料添加量为20%时，纸张抗张指数和环压指数分别为14.0 N·m/g和5.79 N·m/g，较未加填纸分别提高了14.6%和37.2%；与竹渣相比，生物酶法制备的竹渣填料物相结构和热稳定性未发生明显改变，但大分子结构中氢键基团增多，竹渣表面发生片状化改变；添加生物酶法制备的竹渣未对抄纸白水水质指标产生显著影响。

Abstract:Bamboo residue was used as raw material to prepare biomass papermaking fillers by biological enzymatic method. The process parameters of bamboo residue fillers prepared by biological enzymatic method and the physicochemical properties of bamboo residue fillers after pretreatment were studied， and the effects of the addition of bamboo residue fillers on the physical strength and wet-end properties of papermaking were investigated. The results showed that the optimum conditions for the preparation of bamboo residue fillers by biological enzyme method were as follows： the amount of biological enzyme was 0.02% （relative to oven-dry bamboo residue）， the pH value was 6.5， the temperature was 65℃， the treatment time was 1 h， and the dissolution of bamboo residue was 6.8% under these conditions. When the content of bamboo residue fillers prepared by biological enzymatic method was 20%， the tensile index and ring compression index of paper were 14.0 N·m/g and 5.79 N·m/g， which were 14.6% and 37.2% higher than that of unfilled paper， respectively. Compared with bamboo residue， the phase structure and thermal stability of bamboo residue fillers prepared by biological enzymatic method did not change significantly， however， the hydrogen bond groups in the macromolecular structure increased and the surface of bamboo residue changed into flakes. The bamboo residue prepared by adding biological enzyme method had no significant effects on the water quality index of papermaking white water.