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Mosoabisane MFT, Luyt AS, van Sittert CGCE. Comparative experimental and modelling study of the thermal and thermo-mechanical properties of LLDPE/wax blends. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-03136-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
AbstractThe interactions and morphology of molecules in a polymer blend influence the physical properties of the blend. However, little is known about the influence of molecular interaction and morphology on the thermal and mechanical properties of LLDPE/wax blends. Although cooling rate can be used to investigate blends' thermal and mechanical properties, it is inadequate to determine interactions between the molecules in the LLDPE/wax blends. However, since the morphology is related to the thermal and mechanical properties of polymer blends and could be related to the cooling rate, LLDPE/wax samples prepared by melt mixing were cooled at different rates. The thermal and mechanical properties of the LLDPE/wax blends were modelled through molecular dynamic simulations. The modelled transitions were compared to experimentally determined mechanical relaxations of LLDPE/wax blends to investigate the effect of wax addition on the blend crystallinity. The crystallization behaviour of the blends was studied by differential scanning calorimetry, dynamic mechanical behaviour by dynamic mechanical analysis, and differences in crystallinity by X-ray diffraction. There were no significant differences between the results for the slow- and quench-cooled samples, confirming the rapid crystallization of both the LLDPE and the wax. Experiments and molecular dynamics simulations confirmed the cocrystallization of wax with LLDPE.
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Spectra of Internal Friction in Polyethylene. Polymers (Basel) 2022; 14:polym14040675. [PMID: 35215586 PMCID: PMC8875035 DOI: 10.3390/polym14040675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 01/28/2022] [Accepted: 01/31/2022] [Indexed: 02/01/2023] Open
Abstract
The study of spectra of internal friction λ=fT and temperature dependencies of frequency of freely damped ν=fT oscillatory process excited in investigated samples of polyethylene with different degree of crystallinity in the temperature range from −150 °C to +150 °C. It is established that four local dissipative processes of different intensity shown in different temperature intervals are observed on the spectra λ=fT. These are μ, β, α, βk processes. The theoretical analysis of the relationship between the anomalous changes of the vibrational process frequency ν=fT and the shift modulus defect ΔG=fT and the internal friction mechanisms for each of the dissipative loss processes detected on the spectrum λ=fT is carried out. The influence of supramolecular structures on local dissipative βk process in polyethylene is estimated.
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Dual Transient Networks of Polymer and Micellar Chains: Structure and Viscoelastic Synergy. Polymers (Basel) 2021; 13:polym13234255. [PMID: 34883758 PMCID: PMC8659570 DOI: 10.3390/polym13234255] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 11/30/2021] [Indexed: 02/04/2023] Open
Abstract
Dual transient networks were prepared by mixing highly charged long wormlike micelles of surfactants with polysaccharide chains of hydroxypropyl guar above the entanglement concentration for each of the components. The wormlike micelles were composed of two oppositely charged surfactants potassium oleate and n-octyltrimethylammonium bromide with a large excess of anionic surfactant. The system is macroscopically homogeneous over a wide range of polymer and surfactant concentrations, which is attributed to a stabilizing effect of surfactants counterions that try to occupy as much volume as possible in order to gain in translational entropy. At the same time, by small-angle neutron scattering (SANS) combined with ultrasmall-angle neutron scattering (USANS), a microphase separation with the formation of polymer-rich and surfactant-rich domains was detected. Rheological studies in the linear viscoelastic regime revealed a synergistic 180-fold enhancement of viscosity and 65-fold increase of the longest relaxation time in comparison with the individual components. This effect was attributed to the local increase in concentration of both components trying to avoid contact with each other, which makes the micelles longer and increases the number of intermicellar and interpolymer entanglements. The enhanced rheological properties of this novel system based on industrially important polymer hold great potential for applications in personal care products, oil recovery and many other fields.
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Double dynamic hydrogels formed by wormlike surfactant micelles and cross-linked polymer. J Colloid Interface Sci 2021; 611:46-60. [PMID: 34929438 DOI: 10.1016/j.jcis.2021.11.198] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 11/29/2021] [Accepted: 11/30/2021] [Indexed: 01/16/2023]
Abstract
HYPOTHESIS Interpenetrating networks consisting of a polymer network with dynamic cross-links and a supramolecular network allow obtaining hydrogels with significantly enhanced mechanical properties. EXPERIMENTS Binary hydrogels composed of a dynamically cross-linked poly(vinyl alcohol) (PVA) network and a transient network of entangled highly charged mixed wormlike micelles (WLMs) of surfactants (potassium oleate and n-octyltrimethylammonium bromide) were prepared and studied by rheometry, SANS, USANS, cryo-TEM, and NMR spectroscopy. FINDINGS Binary hydrogels show significantly enhanced rheological properties (a 3400-fold higher viscosity and 27-fold higher plateau modulus) as compared to their components taken separately. This is due to the microphase separation leading to local concentrating of PVA and WLMs providing larger number of polymer-polymer contacts for cross-linking and longer WLMs with more entanglements. Such materials are very promising for the application in many areas, ranging from enhanced oil recovery to biomedical uses.
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Chen X, Wignall GD, He L, Lopez-Barron C, Alamo RG. SANS Evidence of Liquid–Liquid Phase Separation Leading to Inversion of Crystallization Rate of Broadly Distributed Random Ethylene Copolymers. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b00357] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Xuejian Chen
- Department
of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, 2525 Pottsdamer St., Tallahassee, Florida 32310-6046, United States
| | - George D. Wignall
- Biology
and Soft Matter Division, ORNL, Bethel Valley Rd., Oak Ridge, Tennessee 37831, United States
| | - Lilin He
- Biology
and Soft Matter Division, ORNL, Bethel Valley Rd., Oak Ridge, Tennessee 37831, United States
| | - Carlos Lopez-Barron
- Baytown
Technology and Engineering Complex, ExxonMobil Chemical Company, Baytown, Texas 77520, United States
| | - Rufina G. Alamo
- Department
of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, 2525 Pottsdamer St., Tallahassee, Florida 32310-6046, United States
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Mamun A, Chen X, Alamo RG. Interplay between a Strong Memory Effect of Crystallization and Liquid–Liquid Phase Separation in Melts of Broadly Distributed Ethylene–1-Alkene Copolymers. Macromolecules 2014. [DOI: 10.1021/ma501937c] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Al Mamun
- Department of Chemical and
Biomedical Engineering, FAMU-FSU College of Engineering, 2525
Pottsdamer St., Tallahassee, Florida 32310-6046, United States
| | - Xuejian Chen
- Department of Chemical and
Biomedical Engineering, FAMU-FSU College of Engineering, 2525
Pottsdamer St., Tallahassee, Florida 32310-6046, United States
| | - Rufina G. Alamo
- Department of Chemical and
Biomedical Engineering, FAMU-FSU College of Engineering, 2525
Pottsdamer St., Tallahassee, Florida 32310-6046, United States
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7
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Gedde UW, Mattozzi A. Polyethylene Morphology. LONG TERM PROPERTIES OF POLYOLEFINS 2012. [DOI: 10.1007/b94176] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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8
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Frederix C, Lefebvre J, Rochas C, Séguéla R, Stoclet G. Binary blends of linear ethylene copolymers over a wide crystallinity range: Rheology, crystallization, melting and structure properties. POLYMER 2010. [DOI: 10.1016/j.polymer.2010.04.045] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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9
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Yang J, Chen X, Fu R, Luo WA, Li Y, Zhang M. Kinetics of phase separation in polymer blends revealed by resonance light scattering spectroscopy. Phys Chem Chem Phys 2010; 12:2238-45. [DOI: 10.1039/b918069a] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Dominik A, Chapman WG, Swindoll RD, Eversdyk D, Jog PK, Srivastava R. Compositional Polydispersity in Linear Low Density Polyethylene. Ind Eng Chem Res 2009. [DOI: 10.1021/ie800982z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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11
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Jeon K, Krishnamoorti R. Morphological Behavior of Thin Linear Low-Density Polyethylene Films. Macromolecules 2008. [DOI: 10.1021/ma800652p] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Keesu Jeon
- Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204-4004
| | - Ramanan Krishnamoorti
- Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204-4004
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Delgadillo-Velázquez O, Hatzikiriakos SG, Sentmanat M. Thermorheological properties of LLDPE/LDPE blends: Effects of production technology of LLDPE. ACTA ACUST UNITED AC 2008. [DOI: 10.1002/polb.21504] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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14
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Hussein IA, Hameed T. Influence of branching characteristics on thermal and mechanical properties of Ziegler-Natta and metallocene hexene linear low-density polyethylene blends with low-density polyethylene. J Appl Polym Sci 2005. [DOI: 10.1002/app.21985] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Abu-Sharkh BF, Giri AM, Hussein IA. Influence of branch content on the microstructure of blends of linear and octene-branched polyethylene: a MD simulation study. Eur Polym J 2004. [DOI: 10.1016/j.eurpolymj.2004.01.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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16
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Xanthos M, Tan V, Ponnusamy A. Measurement of melt viscoelastic properties of polyethylenes and their blends?a comparison of experimental techniques. POLYM ENG SCI 2004. [DOI: 10.1002/pen.11755] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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17
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Kim MH, Alamo RG, Lin JS. The cocrystallization behavior of binary blends of isotactic polypropylene and propylene-ethylene random copolymers. POLYM ENG SCI 2004. [DOI: 10.1002/pen.11602] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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18
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Stephens CH, Hiltner A, Baer E. Phase Behavior of Partially Miscible Blends of Linear and Branched Polyethylenes. Macromolecules 2003. [DOI: 10.1021/ma021621a] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- C. H. Stephens
- Department of Macromolecular Science and Engineering and Center for Applied Polymer Research, Case Western Reserve University, Cleveland, Ohio 44106-7202
| | - A. Hiltner
- Department of Macromolecular Science and Engineering and Center for Applied Polymer Research, Case Western Reserve University, Cleveland, Ohio 44106-7202
| | - E. Baer
- Department of Macromolecular Science and Engineering and Center for Applied Polymer Research, Case Western Reserve University, Cleveland, Ohio 44106-7202
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Wang H, Shimizu K, Hobbie EK, Wang ZG, Meredith JC, Karim A, Amis EJ, Hsiao BS, Hsieh ET, Han CC. Phase Diagram of a Nearly Isorefractive Polyolefin Blend. Macromolecules 2001. [DOI: 10.1021/ma010900f] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Howard Wang
- Polymers Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899; Department of Chemistry, State University of New York, Stony Brook, New York 11794; and Chevron Phillips Chemical Company, Bartlesville, Oklahoma 74004
| | - Katsumi Shimizu
- Polymers Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899; Department of Chemistry, State University of New York, Stony Brook, New York 11794; and Chevron Phillips Chemical Company, Bartlesville, Oklahoma 74004
| | - Erik K. Hobbie
- Polymers Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899; Department of Chemistry, State University of New York, Stony Brook, New York 11794; and Chevron Phillips Chemical Company, Bartlesville, Oklahoma 74004
| | - Zhi-Gang Wang
- Polymers Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899; Department of Chemistry, State University of New York, Stony Brook, New York 11794; and Chevron Phillips Chemical Company, Bartlesville, Oklahoma 74004
| | - J. Carson Meredith
- Polymers Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899; Department of Chemistry, State University of New York, Stony Brook, New York 11794; and Chevron Phillips Chemical Company, Bartlesville, Oklahoma 74004
| | - Alamgir Karim
- Polymers Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899; Department of Chemistry, State University of New York, Stony Brook, New York 11794; and Chevron Phillips Chemical Company, Bartlesville, Oklahoma 74004
| | - Eric J. Amis
- Polymers Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899; Department of Chemistry, State University of New York, Stony Brook, New York 11794; and Chevron Phillips Chemical Company, Bartlesville, Oklahoma 74004
| | - Benjamin S. Hsiao
- Polymers Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899; Department of Chemistry, State University of New York, Stony Brook, New York 11794; and Chevron Phillips Chemical Company, Bartlesville, Oklahoma 74004
| | - Eric T. Hsieh
- Polymers Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899; Department of Chemistry, State University of New York, Stony Brook, New York 11794; and Chevron Phillips Chemical Company, Bartlesville, Oklahoma 74004
| | - Charles C. Han
- Polymers Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899; Department of Chemistry, State University of New York, Stony Brook, New York 11794; and Chevron Phillips Chemical Company, Bartlesville, Oklahoma 74004
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20
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Wignall GD, Alamo RG, Ritchson EJ, Mandelkern L, Schwahn D. SANS Studies of Liquid−Liquid Phase Separation in Heterogeneous and Metallocene-Based Linear Low-Density Polyethylenes. Macromolecules 2001. [DOI: 10.1021/ma010697o] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- G. D. Wignall
- Solid State Division, Oak Ridge National Laboratory, Oak Ridge Tennessee 37831; Chemical Engineering Department, Florida A&M University and Florida State University College of Engineering, Tallahassee, Florida 32310-6046; Department of Chemistry, Florida State University, Tallahassee, Florida 32306; and Institute für Festkörperforschung, Forschungszentrum, Jülich D-52425, Germany
| | - R. G. Alamo
- Solid State Division, Oak Ridge National Laboratory, Oak Ridge Tennessee 37831; Chemical Engineering Department, Florida A&M University and Florida State University College of Engineering, Tallahassee, Florida 32310-6046; Department of Chemistry, Florida State University, Tallahassee, Florida 32306; and Institute für Festkörperforschung, Forschungszentrum, Jülich D-52425, Germany
| | - E. J. Ritchson
- Solid State Division, Oak Ridge National Laboratory, Oak Ridge Tennessee 37831; Chemical Engineering Department, Florida A&M University and Florida State University College of Engineering, Tallahassee, Florida 32310-6046; Department of Chemistry, Florida State University, Tallahassee, Florida 32306; and Institute für Festkörperforschung, Forschungszentrum, Jülich D-52425, Germany
| | - L. Mandelkern
- Solid State Division, Oak Ridge National Laboratory, Oak Ridge Tennessee 37831; Chemical Engineering Department, Florida A&M University and Florida State University College of Engineering, Tallahassee, Florida 32310-6046; Department of Chemistry, Florida State University, Tallahassee, Florida 32306; and Institute für Festkörperforschung, Forschungszentrum, Jülich D-52425, Germany
| | - D. Schwahn
- Solid State Division, Oak Ridge National Laboratory, Oak Ridge Tennessee 37831; Chemical Engineering Department, Florida A&M University and Florida State University College of Engineering, Tallahassee, Florida 32310-6046; Department of Chemistry, Florida State University, Tallahassee, Florida 32306; and Institute für Festkörperforschung, Forschungszentrum, Jülich D-52425, Germany
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21
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22
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Tanem B, Stori A. Investigation of phase behaviour in the melt in blends of single-site based linear polyethylene and ethylene–1-alkene copolymers. POLYMER 2001. [DOI: 10.1016/s0032-3861(00)00811-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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23
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Morgan R, Hill M, Barham P, van der Pol A, Kip B, Ottjes R, van Ruiten J. A study of the phase behaviour of polyethylene blends using micro-Raman imaging. POLYMER 2001. [DOI: 10.1016/s0032-3861(00)00449-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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24
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Wignall GD, Alamo RG, Londono JD, Mandelkern L, Kim MH, Lin JS, Brown GM. Morphology of Blends of Linear and Short-Chain Branched Polyethylenes in the Solid State by Small-Angle Neutron and X-ray Scattering, Differential Scanning Calorimetry, and Transmission Electron Microscopy. Macromolecules 2000. [DOI: 10.1021/ma9912655] [Citation(s) in RCA: 69] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- G. D. Wignall
- Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6393; Department of Chemical Engineering, College of Engineering, Florida Agricultural and Mechanical University and Florida State University, Tallahassee, Florida 32310; Institute of Molecular Biophysics, Florida State University, Tallahassee, Florida 32306; Baytown Polymers Center, EXXON Chemical Company, Baytown, Texas 77522
| | - R. G. Alamo
- Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6393; Department of Chemical Engineering, College of Engineering, Florida Agricultural and Mechanical University and Florida State University, Tallahassee, Florida 32310; Institute of Molecular Biophysics, Florida State University, Tallahassee, Florida 32306; Baytown Polymers Center, EXXON Chemical Company, Baytown, Texas 77522
| | - J. D. Londono
- Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6393; Department of Chemical Engineering, College of Engineering, Florida Agricultural and Mechanical University and Florida State University, Tallahassee, Florida 32310; Institute of Molecular Biophysics, Florida State University, Tallahassee, Florida 32306; Baytown Polymers Center, EXXON Chemical Company, Baytown, Texas 77522
| | - L. Mandelkern
- Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6393; Department of Chemical Engineering, College of Engineering, Florida Agricultural and Mechanical University and Florida State University, Tallahassee, Florida 32310; Institute of Molecular Biophysics, Florida State University, Tallahassee, Florida 32306; Baytown Polymers Center, EXXON Chemical Company, Baytown, Texas 77522
| | - M. H. Kim
- Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6393; Department of Chemical Engineering, College of Engineering, Florida Agricultural and Mechanical University and Florida State University, Tallahassee, Florida 32310; Institute of Molecular Biophysics, Florida State University, Tallahassee, Florida 32306; Baytown Polymers Center, EXXON Chemical Company, Baytown, Texas 77522
| | - J. S. Lin
- Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6393; Department of Chemical Engineering, College of Engineering, Florida Agricultural and Mechanical University and Florida State University, Tallahassee, Florida 32310; Institute of Molecular Biophysics, Florida State University, Tallahassee, Florida 32306; Baytown Polymers Center, EXXON Chemical Company, Baytown, Texas 77522
| | - G. M. Brown
- Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6393; Department of Chemical Engineering, College of Engineering, Florida Agricultural and Mechanical University and Florida State University, Tallahassee, Florida 32310; Institute of Molecular Biophysics, Florida State University, Tallahassee, Florida 32306; Baytown Polymers Center, EXXON Chemical Company, Baytown, Texas 77522
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Hosier IL, Vaughan AS, Swingler SG. On the effects of morphology and molecular composition on the electrical strength of polyethylene blends. ACTA ACUST UNITED AC 2000. [DOI: 10.1002/1099-0488(20000901)38:17<2309::aid-polb110>3.0.co;2-7] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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26
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Agamalian M, Alamo RG, Kim MH, Londono JD, Mandelkern L, Wignall GD. Phase Behavior of Blends of Linear and Branched Polyethylenes on Micron Length Scales via Ultra-Small-Angle Neutron Scattering. Macromolecules 1999. [DOI: 10.1021/ma981091b] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- M. Agamalian
- Solid State Division, Oak Ridge National Laboratory,# Oak Ridge, Tennessee 37830-6393; Department of Chemical Engineering, Florida Agricultural and Mechanical University and Florida State University College of Engineering, Tallahassee, Florida 32310; and Institute of Molecular Bio-physics, Florida State University, Tallahassee, Florida 32306
| | - R. G. Alamo
- Solid State Division, Oak Ridge National Laboratory,# Oak Ridge, Tennessee 37830-6393; Department of Chemical Engineering, Florida Agricultural and Mechanical University and Florida State University College of Engineering, Tallahassee, Florida 32310; and Institute of Molecular Bio-physics, Florida State University, Tallahassee, Florida 32306
| | - M. H. Kim
- Solid State Division, Oak Ridge National Laboratory,# Oak Ridge, Tennessee 37830-6393; Department of Chemical Engineering, Florida Agricultural and Mechanical University and Florida State University College of Engineering, Tallahassee, Florida 32310; and Institute of Molecular Bio-physics, Florida State University, Tallahassee, Florida 32306
| | - J. D. Londono
- Solid State Division, Oak Ridge National Laboratory,# Oak Ridge, Tennessee 37830-6393; Department of Chemical Engineering, Florida Agricultural and Mechanical University and Florida State University College of Engineering, Tallahassee, Florida 32310; and Institute of Molecular Bio-physics, Florida State University, Tallahassee, Florida 32306
| | - L. Mandelkern
- Solid State Division, Oak Ridge National Laboratory,# Oak Ridge, Tennessee 37830-6393; Department of Chemical Engineering, Florida Agricultural and Mechanical University and Florida State University College of Engineering, Tallahassee, Florida 32310; and Institute of Molecular Bio-physics, Florida State University, Tallahassee, Florida 32306
| | - G. D. Wignall
- Solid State Division, Oak Ridge National Laboratory,# Oak Ridge, Tennessee 37830-6393; Department of Chemical Engineering, Florida Agricultural and Mechanical University and Florida State University College of Engineering, Tallahassee, Florida 32310; and Institute of Molecular Bio-physics, Florida State University, Tallahassee, Florida 32306
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27
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Morgan R, Hill M, Barham P. Morphology, melting behaviour and co-crystallization in polyethylene blends: the effect of cooling rate on two homogeneously mixed blends. POLYMER 1999. [DOI: 10.1016/s0032-3861(98)00193-1] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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28
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Kasko AM, Heintz AM, Pugh C. The Effect of Molecular Architecture on the Thermotropic Behavior of Poly[11-(4‘-cyanophenyl-4‘‘-phenoxy)undecyl acrylate] and Its Relation to Polydispersity. Macromolecules 1998. [DOI: 10.1021/ma971279f] [Citation(s) in RCA: 118] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Andrea M. Kasko
- Department of Chemistry, Macromolecular Science and Engineering Center, University of Michigan, Ann Arbor, Michigan 48109-1055
| | - Amy M. Heintz
- Department of Chemistry, Macromolecular Science and Engineering Center, University of Michigan, Ann Arbor, Michigan 48109-1055
| | - Coleen Pugh
- Department of Chemistry, Macromolecular Science and Engineering Center, University of Michigan, Ann Arbor, Michigan 48109-1055
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29
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Agamalian M, Wignall GD, Triolo R. Recent developments in ultra–small angle neutron scattering techniques. ACTA ACUST UNITED AC 1998. [DOI: 10.1080/10448639808233448] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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