丙烯酸等离子体聚合对LDPE薄膜的表面改性
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摘要
为了改变低密度聚乙烯(LDPE)薄膜表面固有的惰性及疏水性,赋予其表面"永久"的亲水性能。以丙烯酸为单体,采用射频辉光放电等离子体聚合的方法对其进行了表面修饰,并用XPS、FTIR-ATR和SEM对改性前后薄膜的表面性能进行了分析。结果表明:聚合处理后薄膜表面O元素的含量明显增加,形成了C—O、C=O、COOH等含氧极性官能团,薄膜表面出现了大小不同的颗粒状丙烯酸聚合物。
In order to endow the low density polyethylene( LDPE) film with the"permanent"surface hydrophilicity and change its inertness and hydrophobicity in nature,LDPE film was modified using radio frequency glow discharge plasma polymerization with the acrylic acid as the reactive monomer. The surface properties of the before and after plasma polymerization treatment were evaluated using XPS,FTIR- ATR and SEM. The results showed that the oxygen element content of the film surface increased significantly after plasma polymerization treatment and C—O,C = O and COOH of oxygen-containing functional groups were found on the surface. The film surface was coated with different sizes of granular acrylic polymer.
In order to endow the low density polyethylene( LDPE) film with the"permanent"surface hydrophilicity and change its inertness and hydrophobicity in nature,LDPE film was modified using radio frequency glow discharge plasma polymerization with the acrylic acid as the reactive monomer. The surface properties of the before and after plasma polymerization treatment were evaluated using XPS,FTIR- ATR and SEM. The results showed that the oxygen element content of the film surface increased significantly after plasma polymerization treatment and C—O,C = O and COOH of oxygen-containing functional groups were found on the surface. The film surface was coated with different sizes of granular acrylic polymer.
引文
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[22]CLAROTTI G,SCHUE F,SLEDZ J,et al.Plasma deposition of thin fluorocarbon films for increased membrane hemocompatibility[J].Journal of Membrane Science,1991,61:289-301.
[2]任煜,邱夷平.低温等离子体对高聚物材料表面改性处理时效性的研究进展[J].材料导报,2007,21(1):56-59.
[3]WAVHAL D S,FISHER E R.Hydrophilic modification of polyethersulfone membranes by low temperature plasma-induced graft polymerization[J].Journal of Membrane Science,2002,209(1):255-269.
[4]陈杰2).低温等离子体化学及其应用[M].北京:科学出版社,2001.
[5]李笃信.贾德民.等离子体技术对高分子材料的表面改性[J].高分子材料科学与工程,1999,15(3):172-175.
[6]刘晓冬,李静,马於光,等.丙烯醇等离子体聚合物与PTFE复合薄膜的表面性能研究[J].高分子材料科学与工程,1996,12(2):106-109.
[7]AGOSTION R,FAVIA P,OEHR C,et al.Low-temperature plasma processing of materials:past,present,and future[J].Plasma Processes and Polymers,2005,2(1):7-15.
[8]CHOUKOUROV A,BIEDERMAN H,SLAVINSKA D,et al.The influence of pulse parameters on film composition during pulsed plasma polymerization of diaminocyclohexane[J].Surface and Coatings Technology,2003,s174/175(9):863-866.
[9]OLIFIRENKO A S,NOVAK I,ROZOVA E Y,et al.Hydrophilization of porous polyethylene films by cold plasma of different types[J].Polymer Science,2009,51(7/8):247-255.
[10]LOREDANA D,ROBERTO G,SENESI G S,et al.Stable plasmadeposited acrylic acid surfaces for cell culture applications[J].Biomaterials,2005,26(18):3831-3841.
[11]巴换粉,施来顺,刘艳璞.等离子体引发接枝聚合丙烯酸对PET表面改性的溶剂效应研究[J].山东大学学报:工学版,2010,40(6):107-112.
[12]马骏,王伟,黄健,等.马来酸酐等离子体聚合改性聚丙烯多孔膜的表面结构与亲水性[J].高分子材料科学与工程,2009,25(1):16-18.
[13]董入贵,马骏,汪思孝,等.HEMA远程等离子体聚合改性聚丙烯表面的结构及亲水性能[J].高分子材料科学与工程,2010,26(7):71-73.
[14]JAFARI R,TATOULIAN M,MORSCHEIDT W,et al.Stable plasma polymerized acrylic acid coating deposited on polyethylene(PE)films in a low frequency discharge(70 k Hz)[J].Reactive and Functional Polymers,2006,66(12):1757-1765.
[15]解林坤,李树材.氨低温等离子体处理低密度聚乙烯薄膜的XPS分析[J].塑料工业,2010,38(10):74-76.
[16]CHEN G L,ZHAO W J,CHEN S H,et al.Preparation of nanocones for immoblizing DNA probe by a low-temperature plasma plume[J].Applied Physics Letters,2006,89(12):121501-121503.
[17]LAI J N,SUNDERLAND B,XUE J M,et al.Study on hydrophilicity of polymer surfaces improved by plasma treatment[J].Applied Surface Science,2006,252(10):3375-3379.
[18]ARPAGAUS C,ROSSI A,ROHR P R V.Short-time plasma surface modification of HDPE powder in a plasma downer reactor—process,wettability improvement and ageing effects[J].Applied Surface Science,2005,252(5):1581-1595.
[19]SANCHIS M R,BLANES V,BLANES M,et al.Surface modification of low density polyethylene(LDPE)film by low pressure O2plasma treatment[J].European Polymer Journal,2006,42(7):1558-1568.
[20]GURUVENKET S,RAO G M,KOMATH M,et al.Plasma surface modification of polystyrene and polyethylene[J].Applied Surface Science,2004,236(1/2/3/4):278-284.
[21]TOPALA I,DUMITRASCU N,POPA G.Properties of the acrylic acid polymers obtained by atmospheric pressure plasma polymerization[J].Nuclear Instruments and Methods in Physics Research Section B:Beam Interactions with Materials and Atoms,2009,267(2):442-445.
[22]CLAROTTI G,SCHUE F,SLEDZ J,et al.Plasma deposition of thin fluorocarbon films for increased membrane hemocompatibility[J].Journal of Membrane Science,1991,61:289-301.