近红外光谱检测技术在聚合物领域的应用研究进展
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摘要
近红外光谱(NIR)检测技术能够提供样品丰富的结构和组成信息,且具有分析速度快、样品无需处理等突出特点,在聚合物领域有了越来越广泛的应用。综述了该技术在聚合物合成到成型加工再到回收利用整个生命周期过程中各个环节的应用研究进展。在聚合物的合成和加工过程中,近红外光谱检测技术可用于材料参量的定量测量,且由于光纤良好的化学和热稳定性,使其能够在强腐蚀、高温、高压等危险环境下进行在线实时监测。对于聚合物合成,选择聚合反应转化率、聚合产物粒径和聚合物组成三个关键参量,概述了近红外光谱在线测量上述参量的相关研究进展;对于聚合物加工,主要讨论了反应性挤出加工过程中近红外光谱在线测量聚合物分子量、残余单体含量、接枝率等反映材料加工状态参量的应用研究。在聚合物的回收利用过程中,近红外光谱可用于废旧塑料制品的定性分类识别,围绕该应用分析了其国内外的研究现状。指出了近红外光谱检测技术在应用中存在的问题,并提出几点建议,最后对该技术在聚合物领域的发展方向进行了展望,并认为随着研究工作的深入和在线测量仪器的发展,近红外光谱检测技术将在聚合物领域有着更加广阔的应用前景。
Near-infrared(NIR) spectroscopy analytical technology has been applied more and more widely in polymer field, since it can provide rich information about structure and composition of samples, and has the prominent feature of fast analysis without dealing with the sample. This article reviewed the research progress of the application of NIR spectroscopy in all aspects in polymer's entire life, which involves polymer synthesis, processing and recycling. NIR analytical technology can be used in quantitatively measurement of important material parameters during the polymer synthesis and processing, what's more, due to the good chemical and thermal stability of the optical fiber, it can realize the in-line real-time measurement in environment with strong corrosion, high temperature and high pressure. As for polymer synthesis, the research progress in real-time measurement of polymerization conversion, polymer particle size and copolymer composition with NIR spectroscopy was discussed. With regard to polymer processing, the discussion on application of NIR spectroscopy for in-line measurement of important parameters which reflects the processing state of the material during the reactive extrusion process, such as the polymer molecular weight, the content of residual monomer and the polymer grafting degree, was mainly made. In the recycling of plastics, NIR can be applied for the qualitative classification and identification of waste plastic products, the article analyzed the research status of this application at home and abroad. In addition, the problems in the application of NIR analytical technology in polymer analysis and corresponding suggestions were pointed out. Finally, the development direction of this technology in polymer field was discussed. It is believed that, NIR spectroscopy will have a wider application prospect in polymer field with the deepening of research work and the development of in-line measurement instruments.
Near-infrared(NIR) spectroscopy analytical technology has been applied more and more widely in polymer field, since it can provide rich information about structure and composition of samples, and has the prominent feature of fast analysis without dealing with the sample. This article reviewed the research progress of the application of NIR spectroscopy in all aspects in polymer's entire life, which involves polymer synthesis, processing and recycling. NIR analytical technology can be used in quantitatively measurement of important material parameters during the polymer synthesis and processing, what's more, due to the good chemical and thermal stability of the optical fiber, it can realize the in-line real-time measurement in environment with strong corrosion, high temperature and high pressure. As for polymer synthesis, the research progress in real-time measurement of polymerization conversion, polymer particle size and copolymer composition with NIR spectroscopy was discussed. With regard to polymer processing, the discussion on application of NIR spectroscopy for in-line measurement of important parameters which reflects the processing state of the material during the reactive extrusion process, such as the polymer molecular weight, the content of residual monomer and the polymer grafting degree, was mainly made. In the recycling of plastics, NIR can be applied for the qualitative classification and identification of waste plastic products, the article analyzed the research status of this application at home and abroad. In addition, the problems in the application of NIR analytical technology in polymer analysis and corresponding suggestions were pointed out. Finally, the development direction of this technology in polymer field was discussed. It is believed that, NIR spectroscopy will have a wider application prospect in polymer field with the deepening of research work and the development of in-line measurement instruments.
引文
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[3] ZHAO Sheng-li,HUANG Ning-sheng,ZHU Zhao-yu(赵胜利,黄宁生,朱照宇).Ecology and Environment(生态环境),2008,17(6):2473.
[4] TANG Gui-lan,HU Biao,KANG Zai-long,et al(汤桂兰,胡彪,康在龙,等).Renewable Resources and Recycling Economy(废旧塑料回收利用现状及问题),2013,6(1):31.
[5] Carvalho M T,Ferreira C,Portela A,et al.Waste Management,2009,29(3):1138.
[6] Watari M.Applied Spectroscopy Reviews,2014,49(6):462.
[7] Ozaki Y.Analytical Sciences,2012,28(6):545.
[8] Mukherjee S,Gowen A.Analytica Chimica Acta,2015,895(3):12.
[9] Rodríguez-Guadarrama L A.European Polymer Journal,2007,43(3):928.
[10] Ambrogi P M N,Colmán M M E,Giudici R.Macromolecular Reaction Engineering,2017,11(4):1.
[11] Marie-Francoise Devaux,Nathalie Nathier-Dufour,Paul Roert,et al.Applied Spectroscopy,1995,49(1):84.
[12] Santos J G,Way D V,Melo P A,et al.Macromolecular Symposia,2011,299-300(1):57.
[13] Chicoma D L,Sayer C,Giudici R.Macromolecular Reaction Engineering,2011,5(3-4):150.
[14] Colmán M M E,Chicoma D L,Giudici R,et al.Brazilian Journal of Chemical Engineering,2014,31(4):925.
[15] Pereira H L,Machado F,Lima E L,et al.Macromolecular Symposia,2011,299-300(1):1.
[16] Yi Minhua,Qiu Teng,Okubo M,et al.Vibrational Spectroscopy,2018,95:23.
[17] LU Wan-zhen(陆婉珍).Near Infrared Spectrometer(近红外光谱仪器).Beijing:Chemical Industry Press(北京:化学工业出版社),2010.
[18] Barnes S E,Brown E C.Applied Spectroscopy,2005,59(5):611.
[19] Mclauchlin A R,Ghita O,Gahkani A.Polymer Testing,2014,38(18):46.
[20] Fischer D,Müller J,Kummer S,et al.Macromolecular Symposia,2011,305(1):10.
[21] Barbas J M,Machado A V,Covas J A.Journal of Applied Polymer Science,2013,127(6):4899.
[22] Watari M,Higashiyama H,Mitsui N,et al.Applied Spectroscopy,2004,58(2):248.
[23] Furukawa T,Kita Y,Sasao S,et al.Journal of Near Infrared Spectroscopy,2002,10(1):195.
[24] Claire B,Flavien M,Alain M.Polymer Engineering & Science,2006,46(11):1613.
[25] Bergmann B,Becker W,Diemert J,et al.Macromolecular Symposia,2013,333(1):138.
[26] Moghaddam L,Rintoul L,Halley P J,et al.Polymer Testing,2012,31(1):155.
[27] Moghaddam L,Martin D J,Halley P J,et al.Vibrational Spectroscopy,2009,51(1):86.
[28] Mauruschat D,Plinke B,Aderhold J,et al.Wood Science & Technology,2016,50(2):313.
[29] Brunner S,Fomin P,Ch K.Waste Management,2015,38(1):49.
[30] Masoumi H,Safavi S M,Khani Z.International Journal of Mechanical and Industrial Engineering,2012,6(5):213.
[31] ?u?tar V,Kolar J,Lusa L,et al.Polymer Degradation & Stability,2014,107(4):341.
[32] Zheng Yan,Bai Jiarui,Xu Jingna,et al.Waste Management,2018,72:87.
[33] Serranti S,Gargiulo A,Bonifazi G.Advanced Environmental,Chemical,and Biological Sensing Technologies,2012,8366:1.
[34] Vidal M,Gowen A,Amigo J M.NIR News,2012,23(1):13.
[35] Serranti S,Gargiulo A,Bonifazi G.Resources Conservation & Recycling,2012,61(4):52.
[36] DU Jing,SUN Zhi-feng,WANG Hao(杜婧,孙志锋,王浩).Transducer and Microsystem Technologies(传感器与微系统),2011,30(9):98.
[37] TAN Yao,WANG Qun-wei,WANG Hao(谭曜,王群威,王豪).China Plastics Industry(塑料工业),2009,37(9):57.
[38] Zhao Qinghua,Chen Ming.Analytical Letters,2015,48(2):301.
[39] ZHANG Yi-min,BAI Jia-rui,LIU Hong-sha,et al(张毅民,白家瑞,刘红莎,等).Engineering Plastics Application(工程塑料应用),2014,(5):75.
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