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J4  2011, Vol. 45 Issue (3): 566-570    DOI: 10.3785/j.issn.1008-973X.2011.03.028
化学工程﹑环境工程     
聚硅氧烷嵌段/接枝改性聚氨酯的表面性能
罗振寰,张庆华,詹晓力,陈丰秋
浙江大学 化学工程学系,浙江 杭州 310027
Surface properties of PDMS segmented/branched
modified polyurethane copolymer
LUO Zhen-huan,ZHANG Qing-hua,ZHAN Xiao-li,CHEN Feng-qiu
Department of Chemical Engineering, Zhejiang University, Hangzhou 310027,China
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摘要:

以不同结构的端羟基聚硅氧烷(PDMS)为软段,聚己内酯(PCL)为混合软段,通过与异佛尔酮二异氰酸酯(IPDI)加聚合成了一系列嵌段/接枝型硅氧烷改性聚氨酯(PDMS-PU),并采用静态接触角、接触角滞后以及XPS等表征手段分析了硅氧烷链段在聚氨酯主链中的链接方式对其表面性能的影响.结果表明:2种链接方式的硅氧烷均能有效的降低聚氨酯的表面能,引入质量分数为15% 的硅氧烷,便可使得其水接触角达到110°,侧链接枝型由于硅氧烷位于侧链,自由度高,链段运动能力较强,易于形成表面富集.主链嵌段型由于硅氧烷链段两端均固定在主链上,难以发生表面重构,接触角滞后不明显,而侧链接枝型硅氧烷链段位于侧链,容易发生表面重构,使得部分极性亲水的聚氨酯硬段暴露在表面,其接触角滞后较为严重.

Abstract:

Series of different linkage form siloxane-modified polyurethane (PDMSPU) were synthesized based on isophorone diisocyanate (IPDI), double-side each containing a hydroxyl alkyl polydimethylsiloxane(PDMS), as well as single-ended with two hydroxyl alkyl PDMS as the soft segment, poly caprolactone (PCL) as mixed soft segment. The effects of linkage form of PDMS unit on surface properties were investigated by water contact angle (CA), contact angle hysteresis (CAH), as well as XPS. CA results show that both the two linkage form PDMS can make surface modification of polyurethane by adding a small amount of siloxane(about15% mass fraction). For branch-type copolymers, as the PDMS chain located on the side chain, segmental mobility of PDMS chains may get stronger, as a result, more PDMS chain would move to the surface and dominate the interface. For the segmented-type copolymer, of which both ends were fixed block in the main chain, the surface reorganization is difficult to occur, thus the CAH is not obvious. In contrary, PDMS locates in the side chain of branch-type copolymer; it is prone for the surface to be reorganized, making part of the hard segment polar hydrophilic polyurethane exposed to the surface, so the CAH is more obvious.

出版日期: 2012-03-16
:  O 631.1  
基金资助:

国家自然科学基金资助项目(20836007,20806067);浙江省科技计划资助项目(2009C21012.

通讯作者: 张庆华,男,讲师.     E-mail: qhzhang@zju.edu.cn
作者简介: 罗振寰(1983-),男,江西余干人,博士生,从事氟硅精细高分子研究.E-mail: puyolzh@gmail.com
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引用本文:

罗振寰,张庆华,詹晓力,陈丰秋. 聚硅氧烷嵌段/接枝改性聚氨酯的表面性能[J]. J4, 2011, 45(3): 566-570.

LUO Zhen-huan,ZHANG Qing-hua,ZHAN Xiao-li,CHEN Feng-qiu. Surface properties of PDMS segmented/branched
modified polyurethane copolymer. J4, 2011, 45(3): 566-570.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2011.03.028        http://www.zjujournals.com/eng/CN/Y2011/V45/I3/566

[1] KROL P. Synthesis methods, chemical structures and phase structures of linear polyurethanes. properties and applications of linear polyurethanes in polyurethane elastomers, copolymers and ionomers [J]. Progress in Material and Science, 2007, 52(6): 915-1015.
[2] ASHISH V, MANOJ K C. Synthesis and surface properties of environmentally responsive segmented polyurethanes [J]. Journal of Colloid and Interface Science, 2002, 249(1): 235-245.
[3] 李永清,郑淑贞. 有机硅低表面能海洋防污涂料的合成及应用研究[J]. 化工新型材料, 2003, 31(7): 1-4.
LI Yongqing, ZHENG Shu–zhen. Synthesis and application of low surface energy organosilicon antifouling coatings[J]. New Chemical Materials, 2003, 31(7): 1-4.
[4] WANG L F, JI Q, GLASS T E, et al. Synthesis and characterization of organosiloxane modified segmented polyether polyurethanes [J]. Polymer, 2000, 41(13):5083-5093.
[5] PRABU A A, ALAGAR M. Mechanical and thermal studies of intercrosslinked networks based on siliconized polyurethaneepoxy/unsaturated polyester coatings [J]. Progress in Organic Coatings, 2004, 49(3): 236-243.
[6] FAN Q L, FANG J L, CHEN Q M, et al. Synthesis and properties of polyurethane modified with aminoethylaminopropyl poly(dimethyl siloxane) [J]. Journal of Applied Polymer Science, 1999, 74(10): 2552-2558.
[7] ZHAN X L, LUO Z H, ZHANG Q H, et al. Synthesis and characterization of a{3[(2,3dihydroxy) propoxy]propyl}vbutyl polydimethylsiloxanes [J]. Chinese Chemical Letters, 2009, 20(6): 729-732.
[8] CHEN W, FADEEV A Y, HSIEH M C, et al. Ultrahydrophobic and ultralyophobic surfaces: some comments and examples [J]. Langmuir, 1999, 15(10): 3395-3399.
[9] SCHMIDT D L, BRADY R F, LAM K, et al. Contact angle hysteresis, adhesion, and marine biofouling [J]. Langmuir, 2004, 20(7): 2830-2836.
[10] BO H, JUNGHOON L, NEELESH A P. Contact angle hysteresis on rough hydrophobic surfaces[J]. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2004, 248(13): 101-104.
[11] EXTRAND C W, KUMAGAI Y. An experimental study of contact angle hysteresis [J]. Journal of Colloid and Interface Science, 1997, 191(2): 378-383.
[12] DESLANDES Y, PLEIZIER G. XPS and SIMS characterisation of segmented polyether polyurethanes containing two different soft segments [J]. Polymer, 1998, 39(11): 2361-2366.
[13] PIKE J K, HO T. Waterinduced surface rearrangements of poly(dimethylsiloxane ureaurethane) segmented block copolymers [J]. Chemistry of Materials, 1996, 8(4): 856-860.

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