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Journal articles on the topic 'Association of polymers'

Author: Grafiati

Published: 28 June 2021

Last updated: 9 February 2022

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1

Shi, Lei Ting, Zhe Na Shen, Wei Zhou, Zhong Bin Ye, and Jun Feng Wang. "Study on the Performance of Hydrophobic Association Water-Soluble Polymer with Strong Association Ability." Advanced Materials Research 418-420 (December 2011): 232–36. http://dx.doi.org/10.4028/www.scientific.net/amr.418-420.232.

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In this article, the viscosifying abilities, rheological properties, and flow characteristics of hydrophobic association water-soluble polymer with high association ability were studied using technical methods of viscosity measurement, rheological and core flow experiments. The results illustrate that hydrophobic associated polymers with low molecular weight rely on a strong hydrophobic interaction, the intermolecular and intramolecular micellar structure formed in solution with a strong ability to increase viscosity. Hydrophobic association water-soluble polymer, comparing with partially hydr

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2

Shapiro, Karen, Colin Krusor, Fernanda F. M. Mazzillo, et al. "Aquatic polymers can drive pathogen transmission in coastal ecosystems." Proceedings of the Royal Society B: Biological Sciences 281, no. 1795 (2014): 20141287. http://dx.doi.org/10.1098/rspb.2014.1287.

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Gelatinous polymers including extracellular polymeric substances (EPSs) are fundamental to biophysical processes in aquatic habitats, including mediating aggregation processes and functioning as the matrix of biofilms. Yet insight into the impact of these sticky molecules on the environmental transmission of pathogens in the ocean is limited. We used the zoonotic parasite Toxoplasma gondii as a model to evaluate polymer-mediated mechanisms that promote transmission of terrestrially derived pathogens to marine fauna and humans. We show that transparent exopolymer particles, a particulate form o

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3

Wei, Ming-Hsin, Boyu Li, R. L. Ameri David, et al. "Megasupramolecules for safer, cleaner fuel by end association of long telechelic polymers." Science 350, no. 6256 (2015): 72–75. http://dx.doi.org/10.1126/science.aab0642.

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We used statistical mechanics to design polymers that defy conventional wisdom by self-assembling into “megasupramolecules” (≥5000 kg/mol) at low concentration (≤0.3 weight percent). Theoretical treatment of the distribution of individual subunits—end-functional polymers—among cyclic and linear supramolecules (ring-chain equilibrium) predicts that megasupramolecules can form at low total polymer concentration if, and only if, the backbones are long (>400 kg/mol) and end-association strength is optimal. Viscometry and scattering measurements of long telechelic polymers having polycyclooctadi

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4

Schertzer, Jeffrey W., and Eric D. Brown. "Use of CDP-Glycerol as an Alternate Acceptor for the Teichoic Acid Polymerase Reveals that Membrane Association Regulates Polymer Length." Journal of Bacteriology 190, no. 21 (2008): 6940–47. http://dx.doi.org/10.1128/jb.00851-08.

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ABSTRACT The study of bacterial extracellular polysaccharide biosynthesis is hampered by the fact that these molecules are synthesized on membrane-resident carrier lipids. To get around this problem, a practical solution has been to synthesize soluble lipid analogs and study the biosynthetic enzymes using a soluble system. This has been done for the Bacillus subtilis teichoic acid polymerase, TagF, although several aspects of catalysis were inconsistent with the results obtained with reconstituted membrane systems or physiological observations. In this work we explored the acceptor substrate p

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5

Okawa, Kaori, Jian Ping Gong, and Yoshihito Osada. "Self-Propagating Association of Zwitterionic Polymers Initiated by Ionene Polymers." Macromolecular Rapid Communications 23, no. 7 (2002): 423. http://dx.doi.org/10.1002/1521-3927(20020401)23:7<423::aid-marc423>3.0.co;2-f.

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6

Srebnik, Simcha. "Physical association of polymers with nanotubes." Journal of Polymer Science Part B: Polymer Physics 46, no. 24 (2008): 2711–18. http://dx.doi.org/10.1002/polb.21605.

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7

Zhang, Zhijie, Chongwen Huang, R. A. Weiss, and Quan Chen. "Association energy in strongly associative polymers." Journal of Rheology 61, no. 6 (2017): 1199–207. http://dx.doi.org/10.1122/1.4997586.

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8

Quan, Xie, Su, and Feng. "The Thermoviscosifying Behavior of Water-Soluble Polymer Based on Graft Polymerization of Pluronic F127 with Acrylamide and 2-Acrylamido-2-methylpropane Sulfonic Acid Sodium Salt." Polymers 11, no. 10 (2019): 1702. http://dx.doi.org/10.3390/polym11101702.

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A new concept of thermoviscosifying polymers is proposed to address the problems about decreasing viscosity of polymer solution under high temperatures. However, existing thermoviscosifying polymers have complicated synthesis processes and high costs, and both of them restrict the wide practical applications of thermoviscosifying polymers. Although polyethers have the characteristics of thermal gelatinization, they just display thermoviscosifying behaviors only under extremely high concentrations (>15 wt %). Therefore, the graft copolymerization of the commercialized Pluronic F127 (PEO100-P

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9

Donato, Ricardo K., and Alice Mija. "Keratin Associations with Synthetic, Biosynthetic and Natural Polymers: An Extensive Review." Polymers 12, no. 1 (2019): 32. http://dx.doi.org/10.3390/polym12010032.

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Among the biopolymers from animal sources, keratin is one the most abundant, with a major contribution from side stream products from cattle, ovine and poultry industry, offering many opportunities to produce cost-effective and sustainable advanced materials. Although many reviews have discussed the application of keratin in polymer-based biomaterials, little attention has been paid to its potential in association with other polymer matrices. Thus, herein, we present an extensive literature review summarizing keratin’s compatibility with other synthetic, biosynthetic and natural polymers, and

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10

Peng, Yuankun, Tongkui Yue, Sai Li, et al. "Rheological and structural properties of associated polymer networks studied via non-equilibrium molecular dynamics simulation." Molecular Systems Design & Engineering 6, no. 6 (2021): 461–75. http://dx.doi.org/10.1039/d1me00017a.

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The physical polymer network formed by molecular association via non-covalent interactions between end groups alters a great many rheological properties of polymers and produces some fascinating rheological phenomena.

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11

Filimon, Anca, Adina Maria Dobos, Ecaterina Avram, and Silvia Ioan. "Ionic polymers based on quaternized polysulfones: hydrodynamic properties of polymer mixtures in solution." Pure and Applied Chemistry 86, no. 11 (2014): 1871–82. http://dx.doi.org/10.1515/pac-2014-0603.

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Abstract Hydrodynamic properties developed in a series of mixtures, obtained from quaternized polysulfone and cellulose acetate phthalate or polyvinyl alcohol in N-methyl-2-pyrrolidone, were evaluated by viscometric investigations. Theoretical and experimental aspects concerning the viscometric data for binary polymer/solvent and ternary polymer/polymer/solvent mixtures have been discussed by the new Wolf model, as a function of the charge density of polyion, structural peculiarity of polymers, and polymer mixture composition. Intrinsic viscosity and also the hydrodynamic parameters obtained b

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12

Perron, Gérald, Josée Francoeur, Jacques E. Desnoyers, and Jan C. T. Kwak. "Heat capacities and volumes in aqueous polymer and polymer–surfactant solutions." Canadian Journal of Chemistry 65, no. 5 (1987): 990–95. http://dx.doi.org/10.1139/v87-169.

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The apparent molar volumes and heat capacities of aqueous mixtures of neutral polymers and ionic surfactants were measured at 25 °C. The polymers chosen were poly(vinylpyrrolidone) (PVP) and poly(ethyleneoxide) (PEO) and the surfactants were the C8, C10, and C12 homologs of sodium alkylsulfates and the C10, C12, and C16 homologs of alkyltrimethylammonium bromides. The polymer–surfactant interactions depend on the nature of both components and on the chain length of the surfactant. The thermodynamic properties of the cationic surfactants are essentially the same in the absence and presence of p

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13

Boothroyd, Stephen C., David M. Hoyle, Thomas C. B. McLeish, et al. "Association and relaxation of supra-macromolecular polymers." Soft Matter 15, no. 26 (2019): 5296–307. http://dx.doi.org/10.1039/c8sm02580k.

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14

Chmiel, O., H. Traitler, W. P. Hammes, and W. Bauer. "Association with natural polymers modifies lipase selectivity." Food Biotechnology 8, no. 1 (1994): 35–56. http://dx.doi.org/10.1080/08905439409549867.

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15

Dekina, S. S., I. I. Romanovska, and T. Yu Gromovoy. "Influence of polymers on lysozyme molecules association." Biopolymers and Cell 27, no. 6 (2011): 442–45. http://dx.doi.org/10.7124/bc.000115.

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16

Pouchlý, Julius, Antonín Živný, and Antonín Sikora. "Solvent-Induced Association of Polymers: Phase Stability." Collection of Czechoslovak Chemical Communications 70, no. 12 (2005): 2014–26. http://dx.doi.org/10.1135/cccc20052014.

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In the preceding paper, basic thermodynamic functions have been derived for a solution of macromolecules associating by means of functional groups (stickers), thus forming junctions, each of which consists of m stickers and bm molecules of solvent. In the present communication, phase stability of the systems under consideration is analyzed. For several values of parameters m and b, spinodal curves are calculated and their minima (i.e. critical solution points) are localized. At higher junction multiplicity values (e.g. at m = 10), a local maximum appears on the spinodal, dividing it into two l

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17

Kennedy, John F., and Kornelia Jumel. "Polymers in aqueous media: Performance through association." Carbohydrate Polymers 14, no. 4 (1991): 450–51. http://dx.doi.org/10.1016/0144-8617(91)90009-2.

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18

Tardani, Franco, Giancarlo Masci, and Camillo La Mesa. "Block co-polymers undergoing supra-molecular association." Colloids and Surfaces A: Physicochemical and Engineering Aspects 384, no. 1-3 (2011): 374–80. http://dx.doi.org/10.1016/j.colsurfa.2011.04.026.

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19

Sherrington, D. C. "Polymers in aqueous media-performance through association." Reactive Polymers 14, no. 3 (1991): 270–71. http://dx.doi.org/10.1016/0923-1137(91)90044-o.

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20

Notley, Shannon M., and Magnus Norgren. "Study of thin films of kraft lignin and two DHPs by means of single-molecule force spectroscopy (SMFS)." Holzforschung 66, no. 5 (2012): 615–22. http://dx.doi.org/10.1515/hf-2011-0202.

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Abstract The adhesion of single and associated lignin chains to a substrate has been studied by means of single-molecule force spectroscopy (SMFS). Softwood kraft lignin (KL) and two lignin polymer models (dehydrogenation polymers, DHPs) based on coniferyl alcohol (DHPc.alc.) and coniferaldehyde (DHPc.ald.) were in focus. The desorption force from the “silicon nitride SMFS tip” for the KL was significantly greater than that of the DHPs. The higher desorption force was interpreted as being due to the interaction of carboxyl groups through hydrogen bonding with the tip as well as to the less com

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21

Tanaka, F., and T. Koga. "Intramolecular and intermolecular association in thermoreversible gelation of hydrophobically modified associating polymers." Computational and Theoretical Polymer Science 10, no. 3-4 (2000): 259–67. http://dx.doi.org/10.1016/s1089-3156(99)00048-3.

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22

Duan, Guo Rong, Xin Wang, Guo Hong Huang, and Ying Gong. "Influence of the Structure of Comb-Shaped Polymer on the Adsorption between the Polymer and SO₄^2- Ions." Key Engineering Materials 480-481 (June 2011): 311–16. http://dx.doi.org/10.4028/www.scientific.net/kem.480-481.311.

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Comb-shaped hyper-branched polycarboxylate admixture polymers, both the water-reducing-type JS and slump-retaining-type BT, were prepared, and their adsorption characteristics with SO42- ions were studied by conductivity loss experiments. The results indicated that the adsorptions were related to both the content of carboxylic acid groups in polymers and the concentration of Na2SO4 solution, adsorptive action was formed by the complexation action between the carboxylic acid groups in polymers and SO42- ions, having nothing to do with polyether side chain in polymer. Comb-shaped hyper-branched

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23

Frontini, Roberto, and Jobst B. Mielck. "Interactions between bendroflumethiazide and water soluble polymers. II. Factors promoting drug-polymer association." European Journal of Pharmaceutics and Biopharmaceutics 43, no. 3 (1997): 309–13. http://dx.doi.org/10.1016/s0939-6411(97)00040-4.

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24

Montaudo, Giorgio, Filippo Samperi, Maurizio S. Montaudo, Sabrina Carroccio, and Concetto Puglisi. "Current Trends in Matrix-Assisted Laser Desorption/Ionization of Polymeric Materials." European Journal of Mass Spectrometry 11, no. 1 (2005): 1–14. http://dx.doi.org/10.1255/ejms.718.

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In the last few years, mass spectrometry has rapidly become indispensable in polymer analysis and complements, in many ways, the structural data provided by nuclear magnetic resonance. Mass spectrometry of polymers is emerging as a revolutionary technique, capable of challenging the techniques and protocols established for years for the characterization of synthetic polymers. Matrix-assisted laser desorption/ionization (MALDI) has become a widely applied method for the structural characterization of synthetic polymers. The primary aim of this review is to illustrate some recent advances in the

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25

Falk, Michael, Manuel Gil, and Nerea Iza. "Self-association of caffeine in aqueous solution: an FT-IR study." Canadian Journal of Chemistry 68, no. 8 (1990): 1293–99. http://dx.doi.org/10.1139/v90-199.

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Spectra of caffeine in D2O solution (0.003 to 0.129 M) were studied by Fourier-transform infrared spectroscopy. Spectral changes in the carbonyl stretching region were interpreted in terms of the self-association equilibria resulting from the stacking of caffeine molecules. Absence of isosbestic points indicated the occurrence of more than two spectroscopically distinct caffeine species. A simple monomer–dimer–polymer model was employed, in which the successive equilibria are governed by two association constants, Kd for the formation of dimers and Kp for the formation of trimers and larger po

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26

Ge, Sirui, Martin Tress, Kunyue Xing, Peng-Fei Cao, Tomonori Saito, and Alexei P. Sokolov. "Viscoelasticity in associating oligomers and polymers: experimental test of the bond lifetime renormalization model." Soft Matter 16, no. 2 (2020): 390–401. http://dx.doi.org/10.1039/c9sm01930h.

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Recently found deviations of the association bond lifetime and the mechanical relaxation in associating polymers contradict past theories while the bond lifetime renormalization provides a quantitative explanation.

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27

Shah, Kwok, Su-Xi Wang, Debbie Soo, and Jianwei Xu. "One-Dimensional Nanostructure Engineering of Conducting Polymers for Thermoelectric Applications." Applied Sciences 9, no. 7 (2019): 1422. http://dx.doi.org/10.3390/app9071422.

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The past few decades have witnessed considerable progress of conducting polymer-based organic thermoelectric materials due to their significant advantages over the traditional inorganic materials. The nanostructure engineering and performance investigation of these conducting polymers for thermoelectric applications have received considerable interest but have not been well documented. This review gives an outline of the synthesis of various one-dimensional (1D) structured conducting polymers as well as the strategies for hybridization with other nanomaterials or polymers. The thermoelectric p

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28

He, Chaobin, Chien-Ming Lee, Anselm C. Griffin, et al. "Chirality in Some Liquid Crystalline Association Chain Polymers." Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals 332, no. 1 (1999): 251–58. http://dx.doi.org/10.1080/10587259908023767.

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29

Khlobystov, Andrei N., Matthew T. Brett, Alexander J. Blake, et al. "Stereoselective Association of Binuclear Metallacycles in Coordination Polymers." Journal of the American Chemical Society 125, no. 22 (2003): 6753–61. http://dx.doi.org/10.1021/ja029048y.

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30

Petekidis, G., D. Vlassopoulos, G. Fytas, N. Kountourakis, and S. Kumar. "Association Dynamics in Solutions of Hairy-Rod Polymers." Macromolecules 30, no. 4 (1997): 919–31. http://dx.doi.org/10.1021/ma961366s.

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31

Davis, T. P., and J. P. A. Heuts. "25th Australasian Polymer Symposium Special Issue." Australian Journal of Chemistry 55, no. 7 (2002): 359. http://dx.doi.org/10.1071/ch02160.

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In February 2001 the 25th Australasian Polymer Symposium was held at the University of New England in Armidale and was attended by over 200 Australasian and international scientists; about a third of these were registered as students. Preceding the conference, a well-attended joint workshop/summer school with the theme of radical polymerization was convened in association with the Cooperative Research Centre for Polymers (CRC-P) and the ARC Key Centre for Polymer Colloids (KCPC).

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32

Nakajima, N., C. D. Huang, J. J. Scobbo, W. J. Shieh, and E. R. Harrell. "Network Formation by Association of Polar Groups in Elastomers." Rubber Chemistry and Technology 62, no. 2 (1989): 343–56. http://dx.doi.org/10.5254/1.3536249.

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Abstract If an elastomer containing polar groups forms interchain associations, can we observe them independently from the effect of chain entanglement? Polyethylacrylate and polyepichlorohydrin are polar elastomers. Our previous deformational study indicated that these elastomers contain interchain associations, which are stronger than the physical entanglements. The conclusion was based on the results of large, unidirectional extension and small simple shear measurements. On the other hand, butadiene—acrylonitrile copolymer (NBR) containing 33% acrylonitrile did not indicate a presence of su

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33

Kumakura, M. "Association of an Antibody-Conjugated Enzyme with Synthetic Polymers Dissolved in Organic Solvents." Zeitschrift für Naturforschung C 49, no. 11-12 (1994): 891–93. http://dx.doi.org/10.1515/znc-1994-11-1228.

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An antibody of a tumor marker (α-fetoprotein) conjugated with peroxidase was dispersed in organic solvents including synthetic polymers, and the interaction of the antibody with the polymers was investigated. It was found that the antibody-conjugated enzyme is associated with the polymers dissolved in hydrophobic organic solvents. The association correlated with the polymerization degree, concentration, and nature of the polymers.

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34

Kancharla, Samhitha, Nathan A. Zoyhofski, Lucas Bufalini, Boris F. Chatelais, and Paschalis Alexandridis. "Association between Nonionic Amphiphilic Polymer and Ionic Surfactant in Aqueous Solutions: Effect of Polymer Hydrophobicity and Micellization." Polymers 12, no. 8 (2020): 1831. http://dx.doi.org/10.3390/polym12081831.

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The interaction in aqueous solutions of surfactants with amphiphilic polymers can be more complex than the surfactant interactions with homopolymers. Interactions between the common ionic surfactant sodium dodecyl sulfate (SDS) and nonionic amphiphilic polymers of the poly(ethylene oxide)–poly(propylene oxide)–poly(ethylene oxide) (PEO-PPO-PEO) type have been probed utilizing a variety of experimental techniques. The polymer amphiphiles studied here are Pluronic F127 (EO100PO65EO100) and Pluronic P123 (EO19PO69EO19), having the same length PPO block but different length PEO blocks and, accordi

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35

da Graça Miguel, Maria. "Association of surfactants and polymers studied by luminescence techniques." Advances in Colloid and Interface Science 89-90 (January 2001): 1–23. http://dx.doi.org/10.1016/s0001-8686(00)00074-9.

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36

Nagarajan, R. "Association of nonionic polymers with micelles, bilayers, and microemulsions." Journal of Chemical Physics 90, no. 3 (1989): 1980–94. http://dx.doi.org/10.1063/1.456041.

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37

Dudowicz, Jacek, Karl F. Freed, and Jack F. Douglas. "Solvation of polymers as mutual association. I. General theory." Journal of Chemical Physics 138, no. 16 (2013): 164901. http://dx.doi.org/10.1063/1.4800074.

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38

Burchard, Walther, Peter Lang, Liane Schulz, and Tommasina Coviello. "Critical association and thermoreversible gelation of some selected polymers." Makromolekulare Chemie. Macromolecular Symposia 58, no. 1 (1992): 21–37. http://dx.doi.org/10.1002/masy.19920580104.

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39

Merkle, G., and W. Burchard. "Association of Amino-Terminated Polystyrenes. 3. Trifunctional Star Polymers." Macromolecules 29, no. 17 (1996): 5734–39. http://dx.doi.org/10.1021/ma9503165.

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40

Pouchlý, Julius, Antonín Živný, and Antonín Sikora. "Solvent-Induced Association of Polymers: Clustering and Network Formation." Collection of Czechoslovak Chemical Communications 70, no. 12 (2005): 1987–2013. http://dx.doi.org/10.1135/cccc20051987.

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A thermodynamic treatment of a random, solvent-assisted association of polyfunctional macromolecules is developed. In the model proposed, a multiple association junction connecting m primary chains consists of m polymer functional groups with bm solvent molecules incorporated. Using Veytsman's procedure, basic thermodynamic functions and association equilibrium relations are derived. Different association characteristics are examined. When passing from a system with solvent-free junctions (b = 0) to our model with b > 0, the shape of the calculated curves changes strikingly, e.g. the relati

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41

Hamad, Esam, and Syed Qutubuddin. "Association of sidechain polymers: The self‐consistent field approach." Journal of Chemical Physics 96, no. 8 (1992): 6222–28. http://dx.doi.org/10.1063/1.462613.

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42

Lee, C. M., C. P. Jariwala, and A. C. Griffin. "Heteromeric liquid-crystalline association chain polymers: structure and properties." Polymer 35, no. 21 (1994): 4550–54. http://dx.doi.org/10.1016/0032-3861(94)90801-x.

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43

Van Guyse, Joachim F. R., Debaditya Bera, and Richard Hoogenboom. "Adamantane Functionalized Poly(2-oxazoline)s with Broadly Tunable LCST-Behavior by Molecular Recognition." Polymers 13, no. 3 (2021): 374. http://dx.doi.org/10.3390/polym13030374.

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Smart or adaptive materials often utilize stimuli-responsive polymers, which undergo a phase transition in response to a given stimulus. So far, various stimuli have been used to enable the modulation of drug release profiles, cell-interactive behavior, and optical and mechanical properties. In this respect, molecular recognition is a powerful tool to fine-tune the stimuli-responsive behavior due to its high specificity. Within this contribution, a poly(2-oxazoline) copolymer bearing adamantane side chains was synthesized via triazabicyclodecene-catalyzed amidation of the ester side chains of

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44

SutcliffeSmith, Henry. "The Colour Users' Association." Journal of the Society of Dyers and Colourists 49, no. 10 (2008): 319. http://dx.doi.org/10.1111/j.1478-4408.1933.tb01729.x.

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45

Clough, Mr H. S. "Wool Industries Research Association." Journal of the Society of Dyers and Colourists 51, no. 7 (2008): 252. http://dx.doi.org/10.1111/j.1478-4408.1935.tb01878.x.

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46

Lathe, Richard. "Tidal chain reaction and the origin of replicating biopolymers." International Journal of Astrobiology 4, no. 1 (2005): 19–31. http://dx.doi.org/10.1017/s1473550405002314.

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Template-directed polymer assembly is a likely feature of prebiotic chemistry, but the product blocks further synthesis, preventing amplification and Darwinian selection. Nucleic acids are unusual because charge repulsion between opposing phosphates permits salt-dependent association and dissociation. It was postulated (Lathe, R. (2004). Fast tidal cycling and the origin of life. Icarus168, 18–22) that tides at ocean shores provide the driving force for amplification: evaporative concentration promoted association/assembly on drying, while charge repulsion on tidal dilution drove dissociation.

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47

Trinh Che, Loan, Marianne Hiorth, Richard Hoogenboom, and Anna-Lena Kjøniksen. "Complex Temperature and Concentration Dependent Self-Assembly of Poly(2-oxazoline) Block Copolymers." Polymers 12, no. 7 (2020): 1495. http://dx.doi.org/10.3390/polym12071495.

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The effect of polymer concentration on the temperature-induced self-association of a block copolymer comprising a poly(2-ethyl-2-oxazoline) block and a random copolymer block consisting of 2-ethyl-2-oxazoline and 2-n-propyl-2-oxazoline (PEtO80-block-P(EtOxx-stat-PropO40-x) with x = 0, 4, or 8 were investigated by dynamic light scattering (DLS) and transmittance measurements (turbidimetry). The polymers reveal a complex aggregation behavior with up to three relaxation modes in the DLS data and with a transmittance that first goes through a minimum before it declines at high temperatures. At low

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48

Zhu, Shijie, Zhongbin Ye, Zhezhi Liu, Zhonghua Chen, Jun Li, and Zuping Xiang. "Adsorption Characteristics of Polymer Solutions on Media Surfaces and Their Main Influencing Factors." Polymers 13, no. 11 (2021): 1774. http://dx.doi.org/10.3390/polym13111774.

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In practical applications, the chemical and physical adsorption of a polymer solution greatly affects its action mode and effect. Understanding the adsorption mechanism and its influencing factors can help to optimize the application mode and ensure application efficiency. Three types of polymer solutions—partially hydrolyzed polyacrylamide (HPAM), hydrophobically associating polymer (AP-P4), and dendrimer hydrophobically associating polymer (DHAP), which are viscoelastic liquids—were used as sorbates to study their adsorption by a sorbent such as quartz sand. The effects of the solution conce

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49

Kourki, Hajir, Mehrzad Mortezaei, Mohammad Hossein Navid Famili, and Milad Malekipirbazari. "Modeling the rheological properties of highly nano-filled polymers." Journal of Composite Materials 51, no. 19 (2016): 2813–24. http://dx.doi.org/10.1177/0021998316678473.

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Organic and inorganic materials are usually added to polymers in order to achieve some benefits such as reducing the product cost, as well as achieving higher modulus and strength. Addition of these materials would change polymers’ behavior. Adding nano-materials to polymers on the other hand is a new challenge in the field of polymer composites where previous studies were unable to achieve good correlation with nano-composites at higher particle volume fractions. In this research, Yamamoto network theory is developed to investigate the behavior of highly nano-filled systems. For this purpose,

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Faull, Sarah V., Emma L. K. Elliston, Bibek Gooptu та ін. "The structural basis for Z α1-antitrypsin polymerization in the liver". Science Advances 6, № 43 (2020): eabc1370. http://dx.doi.org/10.1126/sciadv.abc1370.

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Abstract:

The serpinopathies are among a diverse set of conformational diseases that involve the aberrant self-association of proteins into ordered aggregates. α1-Antitrypsin deficiency is the archetypal serpinopathy and results from the formation and deposition of mutant forms of α1-antitrypsin as “polymer” chains in liver tissue. No detailed structural analysis has been performed of this material. Moreover, there is little information on the relevance of well-studied artificially induced polymers to these disease-associated molecules. We have isolated polymers from the liver tissue of Z α1-antitrypsin

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