ONP碱性脱墨浆回用过程中纤维超分子结构变化的研究  

Effects of Multi-Recycling Process on Supramolecular Structure of ONP Alkaline Deinked Pulp

作　　者：孟庆林[1] 万金泉[1,2] 马邕文[1,2] 王艳[2] 陈德强 

机构地区：[1]华南理工大学制浆造纸工程国家重点实验室,广东广州510640 [2]华南理工大学环境科学与工程学院,广东广州510006 [3]福建南纸股份有限公司,福建南平353000

出　　处：《造纸科学与技术》2013年第1期1-4,26,共5页Paper Science & Technology

基　　金：国家自然科学基金(31200458);教育部博士点基金(No.20110172110015);广东省高校优秀青年创新人才培养计划项目(No.LYM10014);中央高校基本科研基金(2012ZZ0050);广东省科技计划项目(2010B010900026)

摘　　要：本文以ONP碱性脱墨浆为原料,采用XRD、FT-IR等研究了回用过程中ONP碱性脱墨浆纤维超分子结构的变化规律及其对成纸性能的影响。研究结果发现,随着回用次数的增加,ONP碱性脱墨浆纤维保水值总体呈下降趋势;纤维素的结晶度增大,002面微晶尺寸和晶体横截面积增大;回用过程中,纤维素羟基吸收峰向高波数移动,表明纤维-纤维间氢键增强;回用后纸页的抗张指数和耐破指数减少。经5次回用后抗张指数和耐破指数分别下降了54.71%和37.41%,撕裂指数先增大后减小,撕裂指数最终下降了9.35%。In this paper, the changing regularity of the supramolecular structure of ONP alkaline deinked fiber and the influence of the supramolecular structure on physical properties during recycling were studied by XRD, FT - IR. The results showed that with the increased number of cycle, water retention value of the pulp decreased. The crystallization of cellulose increased, the average width of crystallite in 002 and the cross sectional area of micro- crystallinity also increased. The absorption peak of hydroxyl groups in infrared spectra moved to higher wavenum- bers which indicated that the hydrogen bond between molecules enhanced. Tensile index and burst index decreased by 54.71% and 34.71% respectively after 5 times recycling, tearing index first increased then decreased in recy- cling process, and fell by 9.35% after five times recycling.

关 键 词：ONP 碱性脱墨 回用 超分子结构 成纸性能 

分 类 号：TS749.7[轻工技术与工程—制浆造纸工程]