聚乙烯醇/合成硅酸镁锂纳米复合膜的制备研究
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摘要
以聚乙烯醇(PVA)和合成硅酸镁锂为原料,采用溶液插层-流延成膜法制备了不同合成硅酸镁锂含量的PVA/合成硅酸镁锂纳米复合膜,并对PVA/合成硅酸镁锂纳米复合膜进行了表征。研究结果表明:6%(wt,质量分数)合成硅酸镁锂含量制得的PVA/合成硅酸镁锂纳米复合膜,结晶熔融温度达到253.1℃,平衡溶胀比为2.6,拉伸强度最大达到78MPa、断裂伸长率达到100%,耐水性、热性能和力学性能都得到明显改善。
Poly(vinyl alcohol)(PVA)/laponite nanocomposite membranes with different contents of laponite were prepared by solution intercalation-film casting method,using PVA and laponite as raw materials.The composite membranes were characterized.The results showed that the crystal melting temperature reached 253.1℃,the equilibrium swelling ratio was 2.6,the tensile strength was up to 78 MPa,the elongation at break achieved 100%.The water resistance,thermal properties and mechanical property were significantly improved.
Poly(vinyl alcohol)(PVA)/laponite nanocomposite membranes with different contents of laponite were prepared by solution intercalation-film casting method,using PVA and laponite as raw materials.The composite membranes were characterized.The results showed that the crystal melting temperature reached 253.1℃,the equilibrium swelling ratio was 2.6,the tensile strength was up to 78 MPa,the elongation at break achieved 100%.The water resistance,thermal properties and mechanical property were significantly improved.
引文
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[13]Nair S H,Pawar K C,Jog J P,et al.Swelling and mechanical behavior of modified poly(vinyl alcohol)/laponite nanocomposite membranes[J].Journal of Applied Polymer Science,2007,103(5):2896-2903.
[14]Strawhecker K E,Manias E.AFM of poly(vinyl alcohol)crystals next to an inorganic surface[J].Macromolecules,2001,34(24):8475-8482.
[15]刘桂超,龙门,宋野,等.纳米蒙脱土含量对聚乙烯醇基纳米复合膜包装性能的影响[J].食品科学,2014,35(14):216-222.
[2]Lim M J,Kim D W,Seo J C.Enhanced oxygen-barrier and water-resistance properties of poly(vinyl alcohol)blended with poly(acrylic acid)for packaging applications[J].Polymer International,2016,65(4):400-406.
[3]顾瑾,李俊俊,孙余凭,等.聚乙烯醇膜的改性及应用研究进展[J].化学进展,2013,32(5):1074-1079.
[4]Bolto B,Tran T,Hoang M,et al.Crosslinked poly(vinyl alcohol)membranes[J].Progress in Polymer Science,2009,34(12):969-981.
[5]Hyon S H,Cha W I,Ikada Y.Preparation of transparent poly(vinyl alcohol)hydrogel[J].Polymer Bulletin,1989,22(2):119-122.
[6]Strawhecker K E,Manias E.Structure and properties of poly(vinyl alcohol)/Na+montmorillonite nanocomposites[J].Chemical of Materials,2000,12(10):2943-2949.
[7]夏承龙,贾永忠,高峰,等.硅酸镁锂的人工合成及有机改性研究进展[J].盐湖研究,2010,18(1):58-63.
[8]Manikandan D,Divakar D,Sivakumar T.Utilization of clay minerals for developing Pt nanoparticles and their catalytic activity in the selective hydrogenation of cinnamaldehyde[J].Catalysis Communications,2007,8(11):1781-1786.
[9]Phothitontimongkol T,Siebers N,Sukpirom Nipaka,et al.Preparation and characterization of novel organo-clay minerals for Hg(Ⅱ)ions adsorption from aqueous solution[J].Applied Clay Science,2009,43(3/4):343-349.
[10]Velasco J I,Antunes M,Ayyad O,et al.Foams based on low density polyethylene/hectorite nanocomposites:thermal stability and thermomechanical properties[J].Journal of Applied Polymer Science,2007,105(3):1658-1667.
[11]张奉民,余华光,胡博然.聚乙烯醇醇解度测定的定量核磁共振技术研究[J].塑料科技,2013,41(9):78-81.
[12]Bandyopadhyay A,De S M,Bhowmick A.Poly(vinyl alcohol)/silica hybrid nanocomposites by sol-gel technique:synthesis and properties[J].Journal of Materials Science,2005,40(19):5233-5241.
[13]Nair S H,Pawar K C,Jog J P,et al.Swelling and mechanical behavior of modified poly(vinyl alcohol)/laponite nanocomposite membranes[J].Journal of Applied Polymer Science,2007,103(5):2896-2903.
[14]Strawhecker K E,Manias E.AFM of poly(vinyl alcohol)crystals next to an inorganic surface[J].Macromolecules,2001,34(24):8475-8482.
[15]刘桂超,龙门,宋野,等.纳米蒙脱土含量对聚乙烯醇基纳米复合膜包装性能的影响[J].食品科学,2014,35(14):216-222.