碱脲体系对蔗渣盘磨机械浆漂白性能的影响研究  

The effect on bleaching property of bagasse RMP with the treatment of alkali-urea system

作　　者：翟睿 胡志军[1] 张学金[1] 金光范[1] 李静[1] 张妍[1] 周小凡[2] 

机构地区：[1]浙江科技学院浙江省农业生物资源生化制造协同创新中心浙江省农产品化学与生物加工技术重点实验室,杭州310023 [2]南京林业大学江苏省制浆造纸科学与技术重点实验室,南京210037

出　　处：《中华纸业》2017年第18期29-34,共6页China Pulp & Paper Industry

基　　金：浙江省自然科学基金项目(LY15C160002);2017年度省级重点研发计划项目(2017C03045);浙江省废弃生物质循环利用与生态处理技术重点实验室开放基金项目(2016REWB12;2016REWB24)

摘　　要：利用氢氧化钠-硫脲-尿素水溶液在-10℃以及中、高纤维浓度条件下处理蔗渣盘磨机械浆,以求改善其漂白性能,利用纤维质量分析仪、红外光谱仪、X-射线衍射仪和扫描电子显微镜表征处理前后纤维微观性能的变化情况。研究结果表明,在用碱量6%、冷冻时间45min、纤维浓度15%、浸渍时间10min的处理条件下效果最佳。与原纤维相比,处理后纤维经过氧化氢和连二亚硫酸钠两段漂后白度可提高21%,此外处理后纤维表面有轻微的破损,而其他微观性能没有明显变化。In this work, unbleached RMP of bagasse was treated in NaOH-thiourea-urea aqueous solution under the condition of minus 10℃ and medium or high fiber concentration to modify the bleaching property. Then the micro-properties of the untreated and treated fiber were analyzed by FQA, FT-IR, XRD and SEM.The optimal conditions were alkali dosage of 6%, freezing time of 45 min, fiber concentration of 15% and soaking time of 10 min.Compared with those of untreated RMP, the whiteness of treated RMP with the bleaching process of H2O2 and Na2S2O4 could be increased by 21%. According to the analysis of micro-properties,there was no obvious variation on the analysis of FQA, FT-IR and XRD, however, some damages on fiber surface of treated RMP could be observed in SEM analysis.

关 键 词：碱脲体系 蔗渣 盘磨机械浆 漂白性能 

分 类 号：TS745[轻工技术与工程—制浆造纸工程] TS749.6