基于原子力显微镜的胶体颗粒相互作用力测量研究

                                基于原子力显微镜的胶体颗粒相互作用力测量研究

金子嵩¹，宋云鹏²，张金凤^1*，吴森²

（天津大学1.水利工程安全与仿真国家重点实验室；2.精密测试技术及仪器国家重点实验室，天津300072）

摘 要  胶体颗粒絮凝是环境科学领域的研究热点之一，不同环境条件下颗粒间的相互作用力对絮凝起着重要作用。采用聚苯乙烯胶体颗粒作为研究对象，设计实验方案，用原子力显微镜（atomic force microscope，AFM）测量不同电解质溶液中颗粒间相互作用力。在一定范围内，实验值和扩展的胶体稳定性（XDLVO）理论值吻合。液相环境中测量聚苯乙烯胶体颗粒间相互作用力的技术为测量具有复杂形状的胶体颗粒间相互作用力提供了依据。

关键词  原子力显微镜；聚苯乙烯颗粒；相互作用力；XDLVO理论

中图分类号：X143；TH742.9    文献标识码：A     doi:10.3969/j.issn.1000-6281.2016.02.006

Research on the measurement of the interaction forces between colloidal particles based on atomic force microscopy

JIN Zisong¹，SONG Yunpeng²，ZHANG Jinfeng^1*，WU Sen²

（1.State Key Laboratory of Hydraulic Engineering Simulation and safety，2.National Key Laboratory of Precision Measurement and Testing Technique andInstruments, Tianjin University, Tianjin 300072, China）

Abstract  The study on flocculation processes of colloidal particles is one of the research highlights in the field of environmental science. The interaction forces between particles in different environmental conditions play an important role in the flocculation processes of particles. Atomic Force Microscope (AFM) was used to measure the interaction forces between polystyrene colloidal particles in different electrolyte solutions. The observed forces show a good agreement with the analytical results obtained by the XDLVO theory in a certain range. The technique of measuring the interaction between polystyrene particles in liquid phase is the basis for measuring the interaction forces between colloidal particles with complex shapes.

Keywords polystyrene particles；atomic force microscope；interaction forces；XDLVO theory

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[1] BURD A B, JACKSON G A. Particle aggregation[J]. Annual Review of Marine Science，2009，1（2）：65-90.

[2] WU W, GIESE R F, VAN OSS C J. Stability versus flocculation of particle suspensions in water--correlation with the extended DLVO approach for aqueous systems, compared with classical DLVO theory[J]. Colloids and Surfaces B: Biointerfaces，1999，14(1-4): 47-55.

[3] 葛小鹏，汤鸿霄，王东升，等. 原子力显微镜在环境样品研究与表征中的应用与展望[J]. 环境科学学报，2005，25(1)：5-16.

[4] 庄海宁，张燕萍. 原子力显微镜在淀粉颗粒结构研究中的应用[J]. 开发应用-中国食品添加剂，2006，(6): 157-161.

[5] 刘艳辉，胡林，王文波，等. 原子力显微镜与磷脂双层膜作用实验结果理论分析[J]. 科技导报, 2010，28(12): 48-51.

[6] 李静楠，郭丹，王元元. 基于原子力显微镜的纳米抛光颗粒的摩擦力测量方法[J]. 中国表面工程, 2012, 25(2): 21-25.

[7] 陈茜, 蔡继业. 原子力显微镜在生物分子间相互作用力的研究[J]. 现代仪器，2009，15(4)：6-14.

[8] FJM R C，GREGORT，ZITAC, et al. Predicting aggregation rates of collodial particles from direct force measurements[J]. Journal of Physical Chemistry，2013，117（39）: 11853-11862.

[9] JIANG H, XIE Z, LIU G，et al. Interaction forces between muscovite and silica surfaces in electrolyte solutions measured with AFM[J]. Science Direct，2013，23（6）: 1783-1788.

[10] BINNIG G，QUATE C F，GERBER Ch. Atomic force microscope[J]. Physical Review Letters，1986，56（9): 930-933.

[11] 臧立杰，葛小鹏，涂华民，等.  SiO₂胶体探针的制备及其在表面力测定中的应用[J]. 电子显微学报，2009，28（3）:214-218.

[12] PAPASTAVROUG, KIRWANL J, BORKOVECM. Decomposing bridging adhension between polyelectrolyte layers into single molecule contributions[J].  Langmuir, 2006，22（26）: 10880-10884.

[13] BUTT H J，CAPPELLA B，KAPPL M. Forces measurements with the atomic force microscope: technique，interpretation and applications[J].  Surface Science Reports，2005，59（1-6）: 1-152.

[14] KIRWAN L J，MARONI P，BEHRENS S H，et al. Interaction and structure of surfaces coated by poly(vinyl amines) of different line charge densities[J]. Journal of Physical Chemistry，2008，112(46): 14609-14619.

[15] 乔光全，张庆河，张金凤，等. 基于XDLVO理论的黏性泥沙絮凝模拟格子玻尔兹曼模型[J]. 天津大学学报，2013，46（3）：232-238.

[16] GREENE G W, ANDERSON T H, ZENG H B, et al. Force amplification response of actin filaments under confined compression[J]. Proceedings of the National Academy of Sciences of the United States of America，2011，106（2）: 445-449.