Please wait a minute...
Acta Physico-Chimica Sinica  2010, Vol. 26 Issue (06): 1629-1636    DOI: 10.3866/PKU.WHXB20100601
Self Consistent Field Analysis on the Adsorption of Equilibrium Polymers between Two Parallel Plates
SUN Zhe, YUE Xin-Rong, LIU Chuan, ZHANG Ai
School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, P. R. China
Download:   PDF(1100KB) Export: BibTeX | EndNote (RIS)      


Self-consistent field theory is proposed to investigate equilibrium polymers adsorbed between two parallel plates. According to numerical results, the adsorption behavior of the equilibrium polymers can be classified into two regimes, viz. weak adsorption and strong adsorption. For strong adsorption, the apparent adsorption layers of the equilibrium polymers are observed from density profiles. Within this regime, the average chain length increases rapidly as the adsorption strength rising but the chain length distribution remains exponential. Compared with short chain equilibrium polymers, long chain equilibrium polymers are closer to the plates in the case of strong adsorption and are more concentrated in the middle of the gap in the case of weak adsorption. Given that the adsorption strength is weak, the forces applied to the plates are always repulsive for all separation distances. Widening the gap gives rise to a transition of the forces from repulsion to attraction if the adsorption is strong. Furthermore, the density profiles of the equilibrium polymers suggest competition among solubility, adsorption, and depletion. Higher solubility not only makes the density profiles more homogeneous but also decreases the pressures applied by the polymeric chains.

Key wordsAdsorption      Equilibriumpolymer      Self-consistent field theory      Density profile      Association      Depletion effect     
Received: 09 December 2009      Published: 13 April 2010
MSC2000:  O647  
Corresponding Authors: SUN Zhe     E-mail:
Cite this article:

SUN Zhe, YUE Xin-Rong, LIU Chuan, ZHANG Ai. Self Consistent Field Analysis on the Adsorption of Equilibrium Polymers between Two Parallel Plates. Acta Physico-Chimica Sinica, 2010, 26(06): 1629-1636.

URL:     OR

[1] WU Xuanjun, LI Lei, PENG Liang, WANG Yetong, CAI Weiquan. Effect of Coordinatively Unsaturated Metal Sites in Porous Aromatic Frameworks on Hydrogen Storage Capacity[J]. Acta Physico-Chimica Sinica, 2018, 34(3): 286-295.
[2] YAO Chan, LI Guo-Yan, XU Yan-Hong. Carboxyl-Enriched Conjugated Microporous Polymers: Impact of Building Blocks on Porosity and Gas Adsorption[J]. Acta Physico-Chimica Sinica, 2017, 33(9): 1898-1904.
[3] ZHANG Chen-Hui, ZHAO Xin, LEI Jin-Mei, MA Yue, DU Feng-Pei. Wettability of Triton X-100 on Wheat (Triticum aestivum) Leaf Surfaces with Respect to Developmental Changes[J]. Acta Physico-Chimica Sinica, 2017, 33(9): 1846-1854.
[4] MO Zhou-Sheng, QIN Yu-Cai, ZHANG Xiao-Tong, DUAN Lin-Hai, SONG Li-Juan. Influencing Mechanism of Cyclohexene on Thiophene Adsorption over CuY Zeolites[J]. Acta Physico-Chimica Sinica, 2017, 33(6): 1236-1241.
[5] DAI Wei-Guo, HE Dan-Nong. Selective Photoelectrochemical Oxidation of Chiral Ibuprofen Enantiomers[J]. Acta Physico-Chimica Sinica, 2017, 33(5): 960-967.
[6] HE Lei, ZHANG Xiang-Qian, LU An-Hui. Two-Dimensional Carbon-Based Porous Materials: Synthesis and Applications[J]. Acta Physico-Chimica Sinica, 2017, 33(4): 709-728.
[7] CHENG Fang, WANG Han-Qi, XU Kuang, HE Wei. Preparation and Characterization of Dithiocarbamate Based Carbohydrate Chips[J]. Acta Physico-Chimica Sinica, 2017, 33(2): 426-434.
[8] ZHANG Tao-Na, XU Xue-Wen, DONG Liang, TAN Zhao-Yi, LIU Chun-Li. Molecular Dynamics Simulations of Uranyl Species Adsorption and Diffusion Behavior on Pyrophyllite at Different Temperatures[J]. Acta Physico-Chimica Sinica, 2017, 33(10): 2013-2021.
[9] CHEN Jun-Jun, SHI Cheng-Wu, ZHANG Zheng-Guo, XIAO Guan-Nan, SHAO Zhang-Peng, LI Nan-Nan. 4.81%-Efficiency Solid-State Quantum-Dot Sensitized Solar Cells Based on Compact PbS Quantum-Dot Thin Films and TiO2 Nanorod Arrays[J]. Acta Physico-Chimica Sinica, 2017, 33(10): 2029-2034.
[10] ZHANG Shao-Zheng, LIU Jia, XIE Yan, LU Yin-Ji, LI Lin, Lü Liang, YANG Jian-Hui, WEI Shi-Hao. First-Principle Study of Hydrogen Evolution Activity for Two-dimensional M2XO2-2x(OH)2x (M=Ti, V; X=C, N)[J]. Acta Physico-Chimica Sinica, 2017, 33(10): 2022-2028.
[11] LI Yan-Ting, LIU Xin-Min, TIAN Rui, DING Wu-Quan, XIU Wei-Ning, TANG Ling-Ling, ZHANG Jing, LI Hang. An Approach to Estimate the Activation Energy of Cation Exchange Adsorption[J]. Acta Physico-Chimica Sinica, 2017, 33(10): 1998-2003.
[12] LI Kui, ZHAO Yao-Lin, DENG Jia, HE Chao-Hui, DING Shu-Jiang, SHI Wei-Qun. Adsorption of Radioiodine on Cu2O Surfaces: a First-Principles Density Functional Study[J]. Acta Physico-Chimica Sinica, 2016, 32(9): 2264-2270.
[13] XING Lei, JIAO Li-Ying. Recent Advances in the Chemical Doping of Two-Dimensional Molybdenum Disulfide[J]. Acta Physico-Chimica Sinica, 2016, 32(9): 2133-2145.
[14] JING Peng-Fei, LIU Hui-Jun, ZHANG Qin, HU Sheng-Yong, LEI Lan-Lin, FENG Zhi-Yuan. Kinetics and Thermodynamics of Adsorption of Benzil-Bridged β-Cyclodextrin on Uranium(VI)[J]. Acta Physico-Chimica Sinica, 2016, 32(8): 1933-1940.
[15] JIAN Yuan, MU Wan-Jun, LIU Ning, PENG Shu-Ming. Removal of Sr2+ Ions by Ta-Doped Hexagonal WO3: Zeta Potential Measurements and Adsorption Mechanism Determination[J]. Acta Physico-Chimica Sinica, 2016, 32(8): 2052-2058.