改性PVA的高固含量可剥离去污剂的制备及其性能
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摘要
以聚乙烯醇(PVA)作为成膜基材的可剥离去污剂,由于其固含量偏低而影响其应用。选用聚乙烯醇(PVA)作为成膜基材,加入乙酸乙烯酯与丙烯酸丁酯以及丙烯酸作为共聚单体,使用半连续乳液聚合法制备了可剥离去污乳液,可提高其固含量至30%(质量分数),黏度约为1 600 mPa·s。去污剂成膜后膜体的断裂伸长率可达到600%以上。同时对聚合膜进行了红外、核磁、热重以及力学性能分析,并考察了不同单体用量对聚合乳液的粒径、固含量、黏度的影响。
The peelable detergent with polyvinyl alcohol(PVA) is used as the film-forming substrate,which will affect its application due to its low solid content.In this paper,polyvinyl alcohol(PVA) is selected as the film-forming substrate.By adding vinyl acetate and butyl acrylate and acrylic acid as comonomers,a strippable decontamination emulsion was prepared by semi-continuous emulsion polymerization to increase the solid content to 30%,while the viscosity was about 1 600 mPa·s,and the detergent was formed.The elongation at break of the film can reach 600% or more.At the same time,the infrared,nuclear magnetic,thermogravimetric and mechanical properties of the polymer film were analyzed.The effects of different monomer dosages on the particle size,solid content and viscosity of the polymer emulsion were investigated.
The peelable detergent with polyvinyl alcohol(PVA) is used as the film-forming substrate,which will affect its application due to its low solid content.In this paper,polyvinyl alcohol(PVA) is selected as the film-forming substrate.By adding vinyl acetate and butyl acrylate and acrylic acid as comonomers,a strippable decontamination emulsion was prepared by semi-continuous emulsion polymerization to increase the solid content to 30%,while the viscosity was about 1 600 mPa·s,and the detergent was formed.The elongation at break of the film can reach 600% or more.At the same time,the infrared,nuclear magnetic,thermogravimetric and mechanical properties of the polymer film were analyzed.The effects of different monomer dosages on the particle size,solid content and viscosity of the polymer emulsion were investigated.
引文
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[2]谭昭怡,尹臣,张东,等.涂膜超声及涂膜电解对固体表面铀的去污研究[J].化学研究与应用,2004,16(2):201-204.
[3]岳廷盛.涂膜技术在放射性污染表面的去污应用[J].清洗世界,1992,(2):7-8.
[4]陈二娟,李银涛,郭耀楠,等.一种形貌可控的自脆型去污剂的制备及其性能[J].西南科技大学学报,2017,32(3):71-76.
[5]谷兵.可剥离去污涂料的制备及表征[D].四川绵阳:西南科技大学,2009.
[6]谢长琼,何智宇,周元林.无机粉Ca CO3改性可剥离涂膜的性能研究[J].化工新型材料,2012,(5):148-150.
[7]BARATA I,FONSECA AC,COSTA CSMF,et al.Insights into the thermo-mechanical properties of films cast from emulsion terpolymers[J].Progress in Organic Coatings,2014,77(4):790-797.
[8]CHEN Y Z,JU J R,YA T Z,et al.Preparation of high solid content emulsion with core-shell structure[J].Journal of Macromolecular Science:Part D-Reviews in Polymer Processing,2011;50(4):379-385.
[9]李远鹏,张军华.丙烯酸(丁酯)改性聚乙烯醇水溶性的研究[J].化学研究与应用,2014,(8):1299-1302.
[10]PALMA MSA.Effect of monomer feed rate on the properties of copolymer butyl acrylate/vinyl acetate in semibatch emulsion polymerization[J].Indian Journal of Chemical Technology,2007,14(5):515-522.
[11]CHEN N,ZHANG J.The role of hydrogen-bonding interaction in ply(vinyl alcohol)/poly(acrylic acid)blending solutions and eheir films[J].Chinese Journal of Polymer Science,2010,28(6):903-911.
[12]GHORBANI R,ZOHURI G,GHOLAMI M.Novel synthesis method and characterization of poly(vinyl acetatebutyl acrylate)latex particles:effect of silanol-terminated poly(dimethylsiloxane)surfactant on the seeded emulsion copolymerization[J].Journal of Surfactants and Detergents,2017,20(4):891-904.
[13]ZHANG Y,ZHU PC,EDGREN D.Crosslinking reaction of poly(vinyl alcohol)with glyoxal[J].Journal of Polymer Research,2010,17(5):725-730.
[14]XUE B,JI L,DENG J,et al.In situ FTIR spectroscopy study on the rapid dissolution process of modified poly(vinyl alcohol)[J].Journal of Polymer Research,2016,23(10):209.
[15]LANGE H.Emulsion polymerization of vinyl acetate with renewable raw materials as protective colloids[J].School of Chemical Science and Engineering(CHE),2011.
[16]NIU L,XIA Z.Comparison of the different emulsion polymerization routes between acrylic and vinyl acetate monomers using poly(vinyl alcohol)as the sole stabilizer[J].Colloid and Polymer Science,2012,290(8):699-707.
[17]BERBER H.Emulsion Polymerization:Effects of Polymerization Variables on the Properties of Vinyl Acetate Based Emulsion Polymers[M]//Ploymer Sience.2013.
[18]JIANG M,XU N,XIAO C,et al.Synthesis and property of butyl methacrylate-butyl acrylate-acrylic acid terpolymer with absorptive capacity[J].Journal of Macromolecular Science,Part B,2014,53(12):1814-1828.