51
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Castelletto V, Hamley IW, Pedersen JS. Small-angle neutron scattering study of the structure of superswollen micelles formed by a highly asymmetric poly(oxybutylene)-poly(oxyethylene) diblock copolymer in aqueous solution. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2004; 20:2992-2994. [PMID: 15835187 DOI: 10.1021/la036231b] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Affiliation(s)
- V Castelletto
- Department of Chemistry, University of Leeds, Leeds LS2 9JT, United Kingdom
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52
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Crichton MA, Bhatia SR. Small-angle neutron scattering of poly(styrene)/poly(acrylic acid-ethyl acrylate) copolymers: The effect of the degree of hydrolysis of the poly(acrylic acid-ethyl acrylate) block. J Appl Polym Sci 2004. [DOI: 10.1002/app.20429] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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53
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Bang J, Viswanathan K, Lodge TP, Park MJ, Char K. Temperature-dependent micellar structures in poly(styrene-b-isoprene) diblock copolymer solutions near the critical micelle temperature. J Chem Phys 2004; 121:11489-500. [PMID: 15634109 DOI: 10.1063/1.1812753] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The temperature dependence of the micelle structures formed by poly(styrene-b-isoprene) (SI) diblock copolymers in the selective solvents diethyl phthalate (DEP) and tetradecane (C14), which are selective for the PS and PI blocks, respectively, have been investigated by small angle neutron scattering (SANS). Two nearly symmetric SI diblock copolymers, one with a perdeuterated PS block and the other with a perdeuterated PI block, were examined in both DEP and C14. The SANS scattering length density of the solvent was matched closely to either the core or the corona block. The resulting core and corona contrast data were fitted with a detailed model developed by Pedersen and co-workers. The fits provide quantitative information on micellar characteristics such as aggregation number, core size, overall size, solvent fraction in the core, and corona thickness. As temperature increases, the solvent selectivity decreases, leading to substantial solvent swelling of the core and a decrease in the aggregation number and core size. Both core and corona chains are able to relax their conformations near the critical micelle temperature due to a decrease in the interfacial tension, even though the corona chains are always under good solvent conditions.
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Affiliation(s)
- Joona Bang
- Department of Chemical Engineering & Materials Science, University of Minnesota, Minneapolis, MN 55455-0431, USA
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54
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Chen WR, Mallamace F, Glinka CJ, Fratini E, Chen SH. Neutron- and light-scattering studies of the liquid-to-glass and glass-to-glass transitions in dense copolymer micellar solutions. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2003; 68:041402. [PMID: 14682940 DOI: 10.1103/physreve.68.041402] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2003] [Indexed: 05/24/2023]
Abstract
Recent mode coupling theory (MCT) calculations show that if a short-range attractive interaction is added to the pure hard sphere system, one may observe a new type of glass originating from the clustering effect (the attractive glass) as a result of the attractive interaction. This is in addition to the known glass-forming mechanism due to the cage effect in the hard sphere system (the repulsive glass). The calculations also indicate that if the range of attraction is sufficiently short compared to the diameter of the particle, within a certain interval of volume fractions where the two glass-forming mechanisms nearly balance each other, varying the external control parameter, the effective temperature, makes the glass-to-liquid-to-glass reentrance and the glass-to-glass transitions possible. Here we present experimental evidence of both transitions, obtained from small-angle neutron-scattering and photon correlation measurements taken from dense L64 copolymer micellar solutions in heavy water. Varying the temperature in certain predicted volume fraction range triggers a sharp transition between these two different types of glass. In particular, according to MCT, there is an end point (called A3 singularity) of this glass-to-glass transition line, beyond which the long-time dynamics of the two glasses become identical. Our findings confirm this theoretical prediction. Surprisingly, although the Debye-Waller factors, the long-time limit of the coherent intermediate scattering functions, of these two glasses obtained from photon correlation measurements indeed become identical at the predicted volume fraction, they exhibit distinctly different intermediate time relaxation. Furthermore, our experimental results obtained from volume fractions beyond the end point are characterized by the same features as the repulsive glass obtained before the end point. A complete phase diagram giving the boundaries of the structural arrest transitions for L64 micellar system is given.
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Affiliation(s)
- Wei-Ren Chen
- Department of Nuclear Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307, USA
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55
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Park SY, Han BR, Na KM, Han DK, Kim SC. Micellization and Gelation of Aqueous Solutions of Star-Shaped PLLA−PEO Block Copolymers. Macromolecules 2003. [DOI: 10.1021/ma021639l] [Citation(s) in RCA: 88] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sang Yeob Park
- Center for Advanced Functional Polymers, Korea Advanced Institute of Science and Technology, Taejon 305-701, Korea, and Biomaterials Research Center, Korea Institute of Science and Technology, P.O. Box 131, Cheongryang, Seoul 130-650, Korea
| | - Bo Ryeong Han
- Center for Advanced Functional Polymers, Korea Advanced Institute of Science and Technology, Taejon 305-701, Korea, and Biomaterials Research Center, Korea Institute of Science and Technology, P.O. Box 131, Cheongryang, Seoul 130-650, Korea
| | - Kwang Myoung Na
- Center for Advanced Functional Polymers, Korea Advanced Institute of Science and Technology, Taejon 305-701, Korea, and Biomaterials Research Center, Korea Institute of Science and Technology, P.O. Box 131, Cheongryang, Seoul 130-650, Korea
| | - Dong Keun Han
- Center for Advanced Functional Polymers, Korea Advanced Institute of Science and Technology, Taejon 305-701, Korea, and Biomaterials Research Center, Korea Institute of Science and Technology, P.O. Box 131, Cheongryang, Seoul 130-650, Korea
| | - Sung Chul Kim
- Center for Advanced Functional Polymers, Korea Advanced Institute of Science and Technology, Taejon 305-701, Korea, and Biomaterials Research Center, Korea Institute of Science and Technology, P.O. Box 131, Cheongryang, Seoul 130-650, Korea
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56
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Chen SH, Chen WR, Mallamace F. The glass-to-glass transition and its end point in a copolymer micellar system. Science 2003; 300:619-22. [PMID: 12714739 DOI: 10.1126/science.1082364] [Citation(s) in RCA: 118] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
We present experimental evidence, obtained from small-angle neutron scattering and photon correlation measurements, indicating the existence of two types of structurally arrested (glassy) states in a copolymer micellar system with a short-range interparticle attractive interaction. Within a certain range of micellar volume fractions, a sharp transition between these two types of glass is observed by varying the temperature. Furthermore, we found an end point of this transition line beyond which the two glasses become identical in their local structure and their long-time dynamics. These findings confirm the recent mode-coupling theory predictions regarding the phase behavior of the structurally arrested states for this type of system.
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Affiliation(s)
- Sow-Hsin Chen
- Department of Nuclear Engineering, Massachusetts Institute of Technology (MIT), Cambridge, MA 02139, USA.
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57
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Micali N, Villari V. Graft polymer solutions as sticky hard-sphere colloids. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2003; 67:041401. [PMID: 12786361 DOI: 10.1103/physreve.67.041401] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2001] [Revised: 11/21/2002] [Indexed: 05/24/2023]
Abstract
We show that a solution of a graft (comb) polymer can exhibit an adhesive hard-sphere pair potential. In the present paper, static and dynamic light scattering measurements on a comb polymer at low molecular weight are performed and the results discussed in the framework of the colloidal theory for adhesive spheres. Renormalization group calculations are directly compared with experimental data on the cooperative diffusion coefficient using the scaled concentration parameter.
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Affiliation(s)
- Norberto Micali
- CNR-Istituto per i Processi Chimico-Fisici, Sezione Messina, Via La Farina 237, Italy.
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58
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Laflèche F, Durand D, Nicolai T. Association of Adhesive Spheres Formed by Hydrophobically End-Capped PEO. 1. Influence of the Presence of Single End-Capped PEO. Macromolecules 2003. [DOI: 10.1021/ma021076d] [Citation(s) in RCA: 72] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Fabrice Laflèche
- Polymères, Colloïdes, Interfaces, UMR CNRS 6120, Université du Maine, 72085 Le Mans Cedex 9, France
| | - Dominique Durand
- Polymères, Colloïdes, Interfaces, UMR CNRS 6120, Université du Maine, 72085 Le Mans Cedex 9, France
| | - Taco Nicolai
- Polymères, Colloïdes, Interfaces, UMR CNRS 6120, Université du Maine, 72085 Le Mans Cedex 9, France
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59
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Kelarakis A, Havredaki V, Booth C. Aqueous Gels of Diblock Oxyethylene-Oxypropylene Copolymers. MACROMOL CHEM PHYS 2003. [DOI: 10.1002/macp.200290051] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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60
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Gimel JC, Nicolai T, Durand D. Relation between aggregation and phase separation: three-dimensional Monte Carlo simulations. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2002; 66:061405. [PMID: 12513283 DOI: 10.1103/physreve.66.061405] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2002] [Revised: 08/26/2002] [Indexed: 05/24/2023]
Abstract
We study phase separation of particles in solution using Monte Carlo simulations of reversible aggregation on a cubic lattice. Two stages of the phase separation can be clearly distinguished: initial random aggregation and subsequent densification. Step one leads to a distribution of fractal aggregates close to the binodal and to a temporary gel for large attractive interaction. Step two leads to isolated spherical dense domains close to the binodal and branched wormlike strands for large attractive interactions. The transition between the two types of structure is gradual and there is no clear feature that shows the existence of a spinodal. The first stage of the phase separation is metastable very close to the binodal or at very large interaction energy. In the latter case, the second step can be viewed as an aging process of the gel formed in the first step.
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Affiliation(s)
- Jean Christophe Gimel
- Polymères Colloïdes Interfaces, CNRS UMR6120, Université du Maine, F-72085 Le Mans cedex 9, France.
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61
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Castelletto V, Hamley IW, Pedersen JS. A small-angle neutron scattering investigation of the structure of highly swollen block copolymer micelles. J Chem Phys 2002. [DOI: 10.1063/1.1509747] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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62
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Romm F. Theories and theoretical models for percolation and permeability in multiphase systems: comparative analysis. Adv Colloid Interface Sci 2002; 99:1-11. [PMID: 12405399 DOI: 10.1016/s0001-8686(01)00096-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The terminology and the physical sense of percolation and permeability were analyzed. Existing theories of percolation and permeability were analytically compared with respect to their applicability and effectiveness. It is concluded that the main tendency in the development of the concept of percolation/permeability consists in the fundamental investigation of the relationship between the preparation conditions of the solid, its structural characteristics and measured properties - not only percolation/permeability but also adsorption, Hg-intrusion, etc.
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Affiliation(s)
- F Romm
- POLYMATE Ltd., Migdal Emek, Israel.
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63
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Castelletto V, Hamley I. Modelling small-angle scattering data from micelles. Curr Opin Colloid Interface Sci 2002. [DOI: 10.1016/s1359-0294(02)00043-2] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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64
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Chen WR, Chen SH, Mallamace F. Small-angle neutron scattering study of the temperature-dependent attractive interaction in dense L64 copolymer micellar solutions and its relation to kinetic glass transition. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2002; 66:021403. [PMID: 12241174 DOI: 10.1103/physreve.66.021403] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2002] [Indexed: 05/23/2023]
Abstract
We made small-angle neutron scattering (SANS) study of a Pluronic L64 micellar system in aqueous solution at high polymer concentrations (wt %), 35%<c<53%, in a temperature range where a kinetic glass transition has been observed by photon correlation spectroscopy and zero shear viscosity measurements. We analyze SANS intensity distributions assuming that the micelles are spherical and interact among themselves by an effective pair potential, consisting of a hard core plus a narrow attractive square well, the depth of which is temperature dependent. The theory is able to account for the intensity distribution quantitatively when the micellar system is in the liquid phase (but qualitatively when the micellar system is in the glass state), giving values of four parameters: the aggregation number of the micelle N, the volume fraction occupied by the micelles phi, the fractional width of the square well epsilon, and the effective temperature T*=k(B)T/u, where -u is the depth of the square well. Thus, we are able to assign a point in the phase diagram (the T*-phi plane) for each measured micellar liquid and glass state. Comparison with a phase diagram predicted recently by mode coupling theory calculation allows us to identify the existence of the so-called liquid-to-attractive-glass transition line. We also found the evidence of glass-to-glass transition at volume fraction of 0.54 predicted by the mode coupling theory.
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Affiliation(s)
- Wei-Ren Chen
- Department of Nuclear Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307, USA
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65
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Castelletto V, Caillet C, Fundin J, Hamley IW, Yang Z, Kelarakis A. The liquid–solid transition in a micellar solution of a diblock copolymer in water. J Chem Phys 2002. [DOI: 10.1063/1.1479712] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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66
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Castelletto V, Caillet C, Hamley IW, Yang Z. Liquid-solid transition in a model hard sphere system of block copolymer micelles. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2002; 65:050601. [PMID: 12059514 DOI: 10.1103/physreve.65.050601] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2001] [Indexed: 05/23/2023]
Abstract
The transition between micellar liquid and face-centered-cubic crystalline solid in a solution of an amphiphilic diblock copolymer is investigated by small-angle x-ray scattering and rheology. The system is well described by the hard sphere model and there is no evidence for percolation driven by attractive interactions, in contrast to previous reports. Instead, a coexistence region separates liquid and crystal phases.
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Affiliation(s)
- V Castelletto
- Department of Chemistry, University of Leeds, Leeds LS2 9JT, United Kingdom
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67
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Choudhury N, Ghosh SK. Sedimentation equilibrium of a suspension of adhesive colloidal particles in a planar slit: A density functional approach. J Chem Phys 2002. [DOI: 10.1063/1.1421354] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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68
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Holmqvist P, Daniel C, Hamley IW, Mingvanish W, Booth C. Inhomogeneous flow in a micellar solution of a diblock copolymer: creep rheometry experiments. Colloids Surf A Physicochem Eng Asp 2002. [DOI: 10.1016/s0927-7757(01)00691-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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69
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Park SY, Han DK, Kim SC. Synthesis and Characterization of Star-Shaped PLLA−PEO Block Copolymers with Temperature-Sensitive Sol−Gel Transition Behavior. Macromolecules 2001. [DOI: 10.1021/ma010789d] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sang Yeob Park
- Center for Advanced Functional Polymers, Korea Advanced Institute of Science and Technology, Taejon 305-701, Korea, and Biomaterials Research Center, Korea Institute of Science and Technology, P.O. Box 131, Cheongryang, Seoul 130-650, Korea
| | - Dong Keun Han
- Center for Advanced Functional Polymers, Korea Advanced Institute of Science and Technology, Taejon 305-701, Korea, and Biomaterials Research Center, Korea Institute of Science and Technology, P.O. Box 131, Cheongryang, Seoul 130-650, Korea
| | - Sung Chul Kim
- Center for Advanced Functional Polymers, Korea Advanced Institute of Science and Technology, Taejon 305-701, Korea, and Biomaterials Research Center, Korea Institute of Science and Technology, P.O. Box 131, Cheongryang, Seoul 130-650, Korea
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70
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Kelarakis A, Havredaki V, Viras K, Mingvanish W, Heatley F, Booth C, Mai SM. Aqueous Solutions and Gels of Diblock Copolymers of 1,2-Butylene Oxide and Ethylene Oxide Studied by Light Scattering and Rheology. J Phys Chem B 2001. [DOI: 10.1021/jp003364m] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | | | | | | | - Shao-Min Mai
- Department of Chemistry, University of Sheffield, Sheffield S3 7HF, U.K
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71
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72
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Jamnik A. Structure of a two-component mixture of sticky hard-sphere fluids in a planar gap. J Chem Phys 2001. [DOI: 10.1063/1.1359180] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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73
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Dawson K, Foffi G, Fuchs M, Götze W, Sciortino F, Sperl M, Tartaglia P, Voigtmann T, Zaccarelli E. Higher-order glass-transition singularities in colloidal systems with attractive interactions. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2001; 63:011401. [PMID: 11304254 DOI: 10.1103/physreve.63.011401] [Citation(s) in RCA: 242] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2000] [Indexed: 05/23/2023]
Abstract
The transition from a liquid to a glass in colloidal suspensions of particles interacting through a hard core plus an attractive square-well potential is studied within the mode-coupling-theory framework. When the width of the attractive potential is much shorter than the hard-core diameter, a reentrant behavior of the liquid-glass line and a glass-glass-transition line are found in the temperature-density plane of the model. For small well-width values, the glass-glass-transition line terminates in a third-order bifurcation point, i.e., in a A3 (cusp) singularity. On increasing the square-well width, the glass-glass line disappears, giving rise to a fourth-order A4 (swallow-tail) singularity at a critical well width. Close to the A3 and A4 singularities the decay of the density correlators shows stretching of huge dynamical windows, in particular logarithmic time dependence.
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Affiliation(s)
- K Dawson
- Irish Centre for Colloid Science and Biomaterials, University College Dublin, Belfield
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74
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Mingvanish W, Kelarakis A, Mai SM, Daniel C, Yang Z, Havredaki V, Hamley IW, Ryan AJ, Booth C. Rheology and Structures of Aqueous Gels of Diblock(Oxyethylene/Oxybutylene) Copolymer E22B7. J Phys Chem B 2000. [DOI: 10.1021/jp001398o] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Withawat Mingvanish
- Department of Chemistry, University of Manchester, Manchester M13 9PL, U.K., National and Kapodistrian University of Athens, Department of Chemistry, Physical Chemistry Laboratory, Panepistimiopolis, 157 71 Athens, Greece, School of Chemistry, University of Leeds, Leeds LS2 9JT, U.K., and Department of Chemistry, University of Sheffield, Sheffield S3 7HF, U.K
| | - Antonis Kelarakis
- Department of Chemistry, University of Manchester, Manchester M13 9PL, U.K., National and Kapodistrian University of Athens, Department of Chemistry, Physical Chemistry Laboratory, Panepistimiopolis, 157 71 Athens, Greece, School of Chemistry, University of Leeds, Leeds LS2 9JT, U.K., and Department of Chemistry, University of Sheffield, Sheffield S3 7HF, U.K
| | - Shao-Min Mai
- Department of Chemistry, University of Manchester, Manchester M13 9PL, U.K., National and Kapodistrian University of Athens, Department of Chemistry, Physical Chemistry Laboratory, Panepistimiopolis, 157 71 Athens, Greece, School of Chemistry, University of Leeds, Leeds LS2 9JT, U.K., and Department of Chemistry, University of Sheffield, Sheffield S3 7HF, U.K
| | - Christophe Daniel
- Department of Chemistry, University of Manchester, Manchester M13 9PL, U.K., National and Kapodistrian University of Athens, Department of Chemistry, Physical Chemistry Laboratory, Panepistimiopolis, 157 71 Athens, Greece, School of Chemistry, University of Leeds, Leeds LS2 9JT, U.K., and Department of Chemistry, University of Sheffield, Sheffield S3 7HF, U.K
| | - Zhuo Yang
- Department of Chemistry, University of Manchester, Manchester M13 9PL, U.K., National and Kapodistrian University of Athens, Department of Chemistry, Physical Chemistry Laboratory, Panepistimiopolis, 157 71 Athens, Greece, School of Chemistry, University of Leeds, Leeds LS2 9JT, U.K., and Department of Chemistry, University of Sheffield, Sheffield S3 7HF, U.K
| | - Vasiliki Havredaki
- Department of Chemistry, University of Manchester, Manchester M13 9PL, U.K., National and Kapodistrian University of Athens, Department of Chemistry, Physical Chemistry Laboratory, Panepistimiopolis, 157 71 Athens, Greece, School of Chemistry, University of Leeds, Leeds LS2 9JT, U.K., and Department of Chemistry, University of Sheffield, Sheffield S3 7HF, U.K
| | - Ian W. Hamley
- Department of Chemistry, University of Manchester, Manchester M13 9PL, U.K., National and Kapodistrian University of Athens, Department of Chemistry, Physical Chemistry Laboratory, Panepistimiopolis, 157 71 Athens, Greece, School of Chemistry, University of Leeds, Leeds LS2 9JT, U.K., and Department of Chemistry, University of Sheffield, Sheffield S3 7HF, U.K
| | - Anthony J. Ryan
- Department of Chemistry, University of Manchester, Manchester M13 9PL, U.K., National and Kapodistrian University of Athens, Department of Chemistry, Physical Chemistry Laboratory, Panepistimiopolis, 157 71 Athens, Greece, School of Chemistry, University of Leeds, Leeds LS2 9JT, U.K., and Department of Chemistry, University of Sheffield, Sheffield S3 7HF, U.K
| | - Colin Booth
- Department of Chemistry, University of Manchester, Manchester M13 9PL, U.K., National and Kapodistrian University of Athens, Department of Chemistry, Physical Chemistry Laboratory, Panepistimiopolis, 157 71 Athens, Greece, School of Chemistry, University of Leeds, Leeds LS2 9JT, U.K., and Department of Chemistry, University of Sheffield, Sheffield S3 7HF, U.K
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75
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Mallamace F, Gambadauro P, Micali N, Tartaglia P, Liao C, Chen S. Kinetic glass transition in a micellar system with short-range attractive interaction. PHYSICAL REVIEW LETTERS 2000; 84:5431-5434. [PMID: 10990961 DOI: 10.1103/physrevlett.84.5431] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/1999] [Indexed: 05/23/2023]
Abstract
We show that percolation and structural arrest transitions coexist in different regions of the phase diagram of a copolymer-micellar system and relate them to short-range intermicellar attraction. The intermediate scattering function shows a nonergodic transition along a temperature and concentration dependent line. Analyses show a logarithmic time dependence, attributed to a higher-order glass transition singularity predicted by mode-coupling theory, followed by a power law.
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Affiliation(s)
- F Mallamace
- Department of Nuclear Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 and Istituto Nazionale per la Fisica della Materia, Genova, Italy
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76
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Mallamace F, Micali N, Romeo A, Monsù Scolaro L. Fractal aggregation of dyes such as porphyrins and related compounds under stacking. Curr Opin Colloid Interface Sci 2000. [DOI: 10.1016/s1359-0294(00)00037-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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