高取代度阳离子天然高分子的合成及其在废纸浆胶粘物控制中的应用
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摘要
本论文为了探索高取代度阳离子淀粉(HCS)和高取代度阳离子瓜尔胶(HCG)作为废纸浆胶粘物控制剂的可行性,首先采用半干法合成了高取代度阳离子淀粉(HCS)和高取代度阳离子瓜尔胶(HCG),通过详细考察醚化剂用量、碱用量、体系含水量、促进剂、反应温度以及反应时间等因素对反应的影响,在优化了半干法制备HCS和HCG的工艺条件下,制备出取代度大于0.9的高取代度阳离子淀粉和取代度大于0.24的高取代度阳离子瓜尔胶。采用红外光谱技术手段,对所制备的物质进行结构表征。
在探索控制胶粘物效果的研究中,将取代度为0.94的HCS和取代度为0.30的HCG作为单元系统与聚胺(PA)进行了比较;在此基础上又考察了由PA与HCS或HCG组成的二元系统,以及由PA、HCS或HCG、阳离子聚丙烯酰胺助留剂(CPAM))组成的三元系统控制废纸浆胶粘物的效果,以及它们对浆料单程留着率和纸张物理性质引起的影响。
研究结果表明,单元系统对胶粘物的控制效果不太理想,二元系统对胶粘物的控制效果明显好于使用单元控制系统的效果,三元系统的效果比较优秀。当加入1000ppm PA、500ppm HCS或HCG时,胶粘物去除率可以分别达到74.30%和84.51%;当加入1000ppm PA、500ppmHCS或HCG以及500ppmCPAM时,胶粘物去除率分别可以达到80.28%和92.60%;使用二元、三元控制系统可以提高浆料的单程留着率,改善纸张的紧度,对纸张的强度影响不大。
In order to investigate the feasibility of using high substituted cationic starch (HCS) and high substituted cationic guar gum (HCG) in controlling stickies problems in waste pulps, a series of HCS and HCG were synthesized by half-dry process. The effects of factors such as the dosage of etherifying agent, the dosage of alkali, water content of the system, reaction temperature and reaction time were studied. Under the optimum process conditions, cationic starches with degree of substitution (DS) above 0.9 and cationic guar gums with DS above 0.24 were prepared, and their structures characterized by Fourier transform infrared spectroscopy (FTIR).In studying the effects of stickies controlling, single systems using HCS (DS 0.94) and HCG (DS 0.30) were compared with polyamine (PA);then the effects of dual systems with the combination of PA and HCS or HCG, triple systems with the combination of PA, HCS or HCG, and a cationic polyacrylamide(CPAM) retention agent in stickies controlling were also studied, together with their effects on pulp overall retention and handsheets physical properties.The results showed that single systems were not good enough, dual systems were much better and triple systems were excellent in stickies control. In the dual systems, when the dosage of PA was 1000ppm and the dosage of HCS or HCG 500ppm, the stickies removal ratios were 74.30% and 84.51%. In the triple systems, when the dosage of PA was 1000ppm, the dosage of HCS or HCG 500ppm and the dosage of CPAM 500ppm, the removal ratios were 80.28% and 92.60%. It also showed that the overall retentions of pulp were improved, the densities of handsheets increased while paper strengthes changed only slightly.
在探索控制胶粘物效果的研究中,将取代度为0.94的HCS和取代度为0.30的HCG作为单元系统与聚胺(PA)进行了比较;在此基础上又考察了由PA与HCS或HCG组成的二元系统,以及由PA、HCS或HCG、阳离子聚丙烯酰胺助留剂(CPAM))组成的三元系统控制废纸浆胶粘物的效果,以及它们对浆料单程留着率和纸张物理性质引起的影响。
研究结果表明,单元系统对胶粘物的控制效果不太理想,二元系统对胶粘物的控制效果明显好于使用单元控制系统的效果,三元系统的效果比较优秀。当加入1000ppm PA、500ppm HCS或HCG时,胶粘物去除率可以分别达到74.30%和84.51%;当加入1000ppm PA、500ppmHCS或HCG以及500ppmCPAM时,胶粘物去除率分别可以达到80.28%和92.60%;使用二元、三元控制系统可以提高浆料的单程留着率,改善纸张的紧度,对纸张的强度影响不大。
In order to investigate the feasibility of using high substituted cationic starch (HCS) and high substituted cationic guar gum (HCG) in controlling stickies problems in waste pulps, a series of HCS and HCG were synthesized by half-dry process. The effects of factors such as the dosage of etherifying agent, the dosage of alkali, water content of the system, reaction temperature and reaction time were studied. Under the optimum process conditions, cationic starches with degree of substitution (DS) above 0.9 and cationic guar gums with DS above 0.24 were prepared, and their structures characterized by Fourier transform infrared spectroscopy (FTIR).In studying the effects of stickies controlling, single systems using HCS (DS 0.94) and HCG (DS 0.30) were compared with polyamine (PA);then the effects of dual systems with the combination of PA and HCS or HCG, triple systems with the combination of PA, HCS or HCG, and a cationic polyacrylamide(CPAM) retention agent in stickies controlling were also studied, together with their effects on pulp overall retention and handsheets physical properties.The results showed that single systems were not good enough, dual systems were much better and triple systems were excellent in stickies control. In the dual systems, when the dosage of PA was 1000ppm and the dosage of HCS or HCG 500ppm, the stickies removal ratios were 74.30% and 84.51%. In the triple systems, when the dosage of PA was 1000ppm, the dosage of HCS or HCG 500ppm and the dosage of CPAM 500ppm, the removal ratios were 80.28% and 92.60%. It also showed that the overall retentions of pulp were improved, the densities of handsheets increased while paper strengthes changed only slightly.
引文
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[2] 赵玉林,陈中豪,王福君.废纸同用过程中胶粘杂质的分类及化学控制.林产化工通讯,2001,35(4):17-19
[3] 刘军钛,李德军.废纸使用常见问题及对策.纸和造纸,2004,9(5):22-24
[4] 赵伟.造纸工业产销形势分析.中华纸业,2004(10):6-11
[5] 庞学欣.废纸同收过程中的胶粘物问题.国际造纸,2002,21(3):23-27
[6] 秦丽娟,陈夫山,王高升.废纸胶粘物控制新技术.西南造纸,2004(3):37-38
[7] 刘骅,刘泽薇.优化筛选是去除胶粘物的重要手段.纸和造纸,2003,5(3):15-17
[8] 李金宝,张美云.废纸胶粘物的分类及去除方法.西南造纸,2004,33(1):31-32
[9] 冯文英.废纸胶粘物的各种分类方法.国际造纸,2001.20(4):45-47
[10] Mahendra R. Doshi, Jeffrey M. Dyer.Various approaches to stickies classification. PaperAge, 2000(7)
[11] 林跃春.胶粘物的危害及其去除和控制新技术.中华纸业,2001.22(8):24-27
[12] Anglim, P;Moore, G.;Ferguson, L. Deposition and measurement of sticky particles.Pulp&Paper Canada, 1999, 100(1): 56-58
[13] LeRoux, R;Pruszynski, P.E;Armstrong, J.R.;Lin, J.F.;Polverari, M.S.;Angelac, A.P. Control of stickles contaminants in newsprint applications - review, mechanisms and novel approach. Pulp & Paper Canada, 1997, 98(9): 54-61
[14] 陈嘉翔.废纸回用时发生胶粘物问题的来龙去脉.中华纸业,2003,24(9):53-56
[15] Charles D.Angle. Wet End Chemical Control Methods Combine to Manage Paper Machine Contaminants. Pulp & paper, 2002(6): 47-49
[16] 陈嘉翔.废纸制浆技术的研究进展.中国造纸,2003,22(2):43-48
[17] Dr Jos Philippaerts.Measuring Pitch and Stickles Deposition Potential. Paper Technology, 2000, 41(3): 51
[18] Anglim, P.;Moore, G.;Ferguson, L. Deposition and measurement of sticky particles.Pulp & Paper Canada, 1999, 100(1): 56-58
[19] 杨波,陈港.回收纤维中胶粘物的分析方法及评价.造纸科学与技术,2003,22(5):39-44
[20] S. Veilleux, Bawater.Quantification of macro stickies and optimization of the wastepaper deinkingprocess. Pulp&Paper Canada, 2000, 101(12): 130-133
[21] Oliver U. Heise, Bangji Cao, Samuel Schabel. A Novel Application of Tappi T277 to Determine Macro Stickles Disintegration and Agglomeration in the Recycling Process .Tappi journal/technical association of the pulp and paper industry, 2000, 83(11): 73
[22] Oliver Heise, Bangji Cao, Johannes Dehm. A New Stickles Test Method-Statistically Sound and User Friendly.Tappi journal/technical association of the pulp and paper industry, 1999, 82(2): 143-152
[23] 侯彦召.胶粘物的定义及其测试方法.国际造纸,2002,21(4):24-25
[24] 林跃春.用一种新方法—RMD湿式样法测定OCC中胶粘物含量.国际造纸,2002,21(3):21-22
[25] 陈嘉翔.废纸回用时发生胶粘物问题的来龙去脉(续一).中华纸业,2003,24(10):35-37
[26] 陈嘉翔.废纸回用时发生胶粘物问题的来龙去脉(续二).中华纸业,2003,24(11):37-39
[27] 陈嘉翔.废纸回用时发生胶粘物问题的来龙去脉(续三).中华纸业,2003,24(12):36-39
[28] 刘群华.废纸回收系统中胶粘物含量的检测方法.中国造纸,2004,23(5):46-49
[29] 孙来鸿.适用于OCC浆中胶粘物含量的检测方法及效果评价.国际造纸,2002.21(4):26-31
[30] 陈嘉翔.国际上对废纸回用时发生胶粘物问题的研究成果和目前的研究方向.造纸化学品,2004,16(1):1-4
[31] 陈嘉翔.用矿物质去除脱墨浆中微细胶粘物的可行性.中国造纸,2004,23(3):50-52
[32] Oliver U. Heise, Martin Kemper. Removal of Residual Stickles at Haindl Paper Using New Flotation Technology. Tappi journal/technical association of the pulp and paper industry, 2000, 83(3): 73-79
[33] Ling, T.F. Effects of surface properties on stickles removal by flotation. Pulp & Paper Canada, 1994, 95(12): 109-113
[34] Ling, Tien Feng;Sutman, Frank J.;Richmann, Sandra K.;Letscher, Mary Beth K.Effect of pulping conditions on stickles behavior in office waste dienking systems. TAPPI Journal, 1994, 77(7): 143-151
[35] David R. Jones, James W. Fitzhenry. Esterase-type Enzymes Offer Recycled Mill an Alternative Approach to Stickles Control. Pulp & Paper Magazine , 2003 (2)
[36] Peter Biza. Talc - A modern Solution for Pitch and Stickles Control. Paper technology, 2001, 42(3): 22-24
[37] Carre, B.;Brun, J.;Galland, G. Incidence of the destabilization of the pulp suspension on the deposition of secondary stickles. Pulp & Paper Canada, 1998, 99(7): 75-79
[38] LeRoux, R.;Pruszynski, EE.;Armstrong, J.R.;Lin, J.F.;Polverari, M.S.;Angelac, A.E Control of stickles contaminants in newsprint applications - review, mechanisms, and novel approach.Pulp & Paper Canada, 1997, 98(9): 54-61
[39] LASMARIAS VICENTE(US), LAYNE ALEXIS(US). US2003143144
[40] GU QU-MING (US). US6527915
[41] PRUSZYNSKI PRZEMYSLAW(CA), ARMSTRONG JOHN R(CA). US5798023
[42] SCHULTE HEINZ-GUENTHER(DE), HORNFECK KLAUS(DE). US5614062
[43] 苑培福.废纸脱墨浆生产系统中胶粘物的化学处理.纸和造纸,2002(6):27
[44] 王旭,詹怀宇.废纸回用中胶粘物的工艺控制技术.中国造纸学报,2002.17(1):113-118
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