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Fernández-Paz C, Rojas S, Salcedo-Abraira P, Simón-Yarza T, Remuñán-López C, Horcajada P. Metal-Organic Framework Microsphere Formulation for Pulmonary Administration. ACS APPLIED MATERIALS & INTERFACES 2020; 12:25676-25682. [PMID: 32364369 DOI: 10.1021/acsami.0c07356] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Although nanoscaled metal-organic frameworks (nanoMOFs) are promising drug carriers, their appropriate formulation remains almost unexplored and basically restricted to intravenous routes. Lungs, beneficiating from a large absorption surface and low enzymatic presence, are a very attractive target for both local and systemic delivery. However, pulmonary nanoMOF formulation is a pending and defying task. Thus, we propose a pioneer nanoMOF-based microsphere system as a potential platform for pulmonary administration. A biocompatible nanoMOF was successfully encapsulated in mannitol by a simple and continuous spray-drying technique. Upon intratracheal administration to rats, the resulting formulation, exhibiting optimal properties (i.e., homogeneity, size, density, and spray-drying process yield), was able to release the intact nanoMOF carrier uniformly along the lungs, reaching the bronchioles and alveoli.
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Affiliation(s)
- Cristina Fernández-Paz
- Nanobiofar Group, Department of Pharmacology, Pharmacy & Pharmaceutical Technology. Faculty of Pharmacy, University of Santiago de Compostela, Campus Vida, 15782 Santiago de Compostela, Spain
| | - Sara Rojas
- Advanced Porous Materials Unit, IMDEA Energy. Av. Ramón de la Sagra 3, 28935 Móstoles-Madrid, Spain
| | - Pablo Salcedo-Abraira
- Advanced Porous Materials Unit, IMDEA Energy. Av. Ramón de la Sagra 3, 28935 Móstoles-Madrid, Spain
| | - Teresa Simón-Yarza
- INSERM U1148. Laboratory for Vascular Translational Science, Bichat Hospital, Université de Paris. 75018 Paris, France
| | - Carmen Remuñán-López
- Nanobiofar Group, Department of Pharmacology, Pharmacy & Pharmaceutical Technology. Faculty of Pharmacy, University of Santiago de Compostela, Campus Vida, 15782 Santiago de Compostela, Spain
| | - Patricia Horcajada
- Advanced Porous Materials Unit, IMDEA Energy. Av. Ramón de la Sagra 3, 28935 Móstoles-Madrid, Spain
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Eghbali H, Hagen H, Van Engelen M, Meertens W, Schweizer-Theobaldt A, Meunier D. Molecular weight distribution characterization of reactive higher ethyleneamines using size-exclusion chromatography with conventional calibration. J Chromatogr A 2019; 1603:141-149. [PMID: 31277951 DOI: 10.1016/j.chroma.2019.06.029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 06/10/2019] [Accepted: 06/11/2019] [Indexed: 10/26/2022]
Abstract
Ethyleneamines have been produced and commercialized for decades in the chemical industry for a diverse range of applications. The presence of amine functional groups provides them opportunity to adsorb onto surfaces which can make them a very challenging sample matrix to analyze using separation techniques. In the present report, a new aqueous SEC-RI method, which enables MWD characterization of higher ethyleneamines, is described. The sample preparation was based on the dilute-and-shoot methodology. A surface-modified SEC column with positively charged groups attached to the stationary phase was used. The mobile phase composition (salt concentration, pH) was optimized to suppress interaction between the ethyleneamines and the packing material. Very symmetrical peak shapes were achieved for low MW monodisperse ethyleneamines despite their high primary amine content. MWD calculations were conducted using conventional narrow standard calibration with partial linear extrapolation of the calibration curve. The narrow standards were of the same chemistry as the samples of interest. Consequently, the standard components display a consistent behaviour towards the column packing as the sample components which makes the present method more robust and the interpretation of the quantitative results more convenient. Effect on the measured MW averages and MW distribution due to various experimental parameters (e.g., system variability, mobile phase preparation, sample concentration) were investigated showing good repeatability (RSD < 2%) for Mn, Mw, and Mz.
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Affiliation(s)
- Hamed Eghbali
- Dow Benelux B. V., Core R&D Analytical Science, Terneuzen, 4530 AA, the Netherlands.
| | - Henk Hagen
- Dow Benelux B. V., Packaging and Specialty Plastics R&D, Terneuzen, 4530 AA, the Netherlands
| | - Marcel Van Engelen
- Dow Benelux B. V., Core R&D Analytical Science, Terneuzen, 4530 AA, the Netherlands
| | - Willy Meertens
- Dow Benelux B. V., Core R&D Analytical Science, Terneuzen, 4530 AA, the Netherlands
| | | | - David Meunier
- The Dow Chemical Company, Core R&D Analytical Science, Midland, MI, 48674, USA
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Chen E, Kliger DS. Time-Resolved Linear Dichroism Measurements of Carbonmonoxy Myoglobin as a Probe of the Microviscosity in Crowded Environments. J Phys Chem B 2017; 121:7064-7074. [PMID: 28703591 DOI: 10.1021/acs.jpcb.7b04107] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The distribution of viscosities in living cells is heterogeneous because of the different sizes and natures of macromolecular components. When thinking about protein folding/function processes in such an environment, the relevant (micro)viscosity at the micrometer length scale is necessarily distinguished from the bulk (macro)viscosity. The concentration dependencies of microviscosities are determined by a number of factors, such as electrostatic interactions, van der Waals forces, and excluded volume effects. To explore such factors, the rotational diffusion time of myoglobin in the presence of varying concentrations of macromolecules that differ in molecular weight (dextran 6000, 10 000, and 70 000), shape (dextran versus Ficoll), size, and surface charge is measured with time-resolved linear dichroism spectroscopy. The results of these studies offer simple empirically determined linear and exponential functions useful for predicting microviscosities as a function of concentration for these macromolecular crowders that are typically used to study crowding effects on protein folding. To understand how relevant these microviscosity measurements are to intracellular environments, the TRLD results are discussed in the context of studies that measure viscosity in cells.
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Affiliation(s)
- Eefei Chen
- Department of Chemistry and Biochemistry, University of California , Santa Cruz, California 95064, United States
| | - David S Kliger
- Department of Chemistry and Biochemistry, University of California , Santa Cruz, California 95064, United States
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Cho E, Tahir MN, Kim H, Yu JH, Jung S. Removal of methyl violet dye by adsorption onto N-benzyltriazole derivatized dextran. RSC Adv 2015. [DOI: 10.1039/c5ra03317a] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Methyl violet dye/N-benzyltriazole derivatized dextran interactions.
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Affiliation(s)
- Eunae Cho
- Institute for Ubiquitous Information Technology and Applications (UBITA)
- Konkuk University
- Seoul 143-701
- South Korea
| | - Muhammad Nazir Tahir
- The Danish Polymer Centre
- Department of Chemical and Biochemical Engineering Danmarks Tekniske Universitet (DTU)
- 2880 Kgs. Lyngby
- Denmark
| | - Hwanhee Kim
- Department of Bioscience and Biotechnology
- Bio/Molecular Informatics Center & Institute of Ubiquitous Information Technology and Applications (CBRU)
- Konkuk University
- Seoul 143-701
- South Korea
| | - Jae-Hyuk Yu
- Departments of Bacteriology and Genetics
- University of Wisconsin
- Madison
- USA
| | - Seunho Jung
- Department of Bioscience and Biotechnology
- Bio/Molecular Informatics Center & Institute of Ubiquitous Information Technology and Applications (CBRU)
- Konkuk University
- Seoul 143-701
- South Korea
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Sutton AT, Read E, Maniego AR, Thevarajah JJ, Marty JD, Destarac M, Gaborieau M, Castignolles P. Purity of double hydrophilic block copolymers revealed by capillary electrophoresis in the critical conditions. J Chromatogr A 2014; 1372C:187-195. [DOI: 10.1016/j.chroma.2014.10.105] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2014] [Revised: 10/28/2014] [Accepted: 10/29/2014] [Indexed: 10/24/2022]
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Miyagawa Y, Seto H, Ohto K, Kawakita H. Giant dextran particles formed by dextransucrase immobilized on a tube surface in a laminar flow. Biochem Eng J 2012. [DOI: 10.1016/j.bej.2012.02.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Filippov SK, Porsch B, Sergeeva OY, Olifirenko AS, Lesnichin SB, Domnina NS, Komarova EA, Lezov AV, Garamus VM, Walterova Z, Stepanek P. Molecular properties of hybrid macromolecular antioxidants: dextran hydrophobically modified by sterically hindered phenols. THE EUROPEAN PHYSICAL JOURNAL. E, SOFT MATTER 2011; 34:123. [PMID: 22105139 DOI: 10.1140/epje/i2011-11123-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2011] [Accepted: 10/25/2011] [Indexed: 05/31/2023]
Abstract
The conformation properties of clinically relevant hybrid macromolecular antioxidants (dextran hydrophobically modified by sterically hindered phenols) in aqueous solution were characterized by a combination of dynamic light scattering (DLS), size exclusion chromatography (SEC), and small-angle neutron scattering (SANS). We were able to split and analyze separately two different types of polydispersity -polydispersity over molecular weights and the one over substitution degree. The properties of the hybrid macromolecules are determined by the number of hydrophobic antioxidants in a single molecule. An insertion of hydrophobic groups into a hydrophilic chain changes the conformation of a single conjugate macromolecule. We have established that with the increasing of a number of hydrophobic antioxidant groups, a conformational transition occurs where a single conjugate undergoes a transition from a Gaussian coil conformation to a more compact structure.
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Affiliation(s)
- S K Filippov
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Prague, Czech Republic.
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Kawakita H, Yoshimura Y, Hamamoto K, Seto H, Ohto K, Harada H, Inoue K. Dynamic rejection of colloidal particles with generating dextran by enzymatic reaction. J Chromatogr B Analyt Technol Biomed Life Sci 2009; 877:347-50. [DOI: 10.1016/j.jchromb.2008.12.031] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2008] [Revised: 12/10/2008] [Accepted: 12/13/2008] [Indexed: 11/25/2022]
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Dextran formation on hydroxyapatite by immobilized dextransucrase to control protein adsorption. Carbohydr Polym 2008. [DOI: 10.1016/j.carbpol.2008.04.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Novel carbonyl-group-containing dextran synthesis by pyranose-2-oxidase and dextransucrase. Carbohydr Res 2008; 343:2417-21. [PMID: 18675405 DOI: 10.1016/j.carres.2008.06.027] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2008] [Revised: 06/03/2008] [Accepted: 06/28/2008] [Indexed: 11/24/2022]
Abstract
The carbonyl polysaccharide, keto-dextran, was synthesized by the regioselective oxidation of sucrose and by the subsequent transfer reaction of the oxidized sucrose. The regioselective oxidation of sucrose was performed by bioconversion with pyranose-2-oxidase (EC 1.1.3.10). After 24h, the conversion percentage of sucrose into keto-sucrose was 100% as determined by a colorimetric method with dinitrophenylhydrazine. Converted keto-sucrose was polymerized to keto-dextran by dextransucrase (EC 2.4.1.5). Polymerization of keto-dextran was confirmed by the increase in molecular weight and amount of keto-dextran produced. The amount of keto-dextran produced decreased to 80% of the amount of dextran produced owing to the substrate recognition of DSase. From a Lineweaver-Burk reciprocal plot, the Michaelis constants for sucrose and keto-sucrose were 4.6 mmol L(-1) and 14.0 mmol L(-1), respectively. The keto-dextran had a carbonyl group in all glucose units.
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Kawakita H, Seto H, Ohto K, Inoue K, Harada H. Pore control with dextran generated from immobilized dextransucrase. Biochem Eng J 2007. [DOI: 10.1016/j.bej.2007.02.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Barakat A, Winter H, Rondeau-Mouro C, Saake B, Chabbert B, Cathala B. Studies of xylan interactions and cross-linking to synthetic lignins formed by bulk and end-wise polymerization: a model study of lignin carbohydrate complex formation. PLANTA 2007; 226:267-81. [PMID: 17333255 DOI: 10.1007/s00425-007-0479-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2006] [Accepted: 01/03/2007] [Indexed: 05/03/2023]
Abstract
The mechanism of lignin carbohydrate complex formation by addition of polysaccharides on quinone methide (QM) generated during lignin polymerisation was investigated using a model approach. Dehydrogenation polymers (DHPs, lignin model compounds) were synthesized from coniferyl alcohol in the presence of a glucuronoarabinoxylan (GAX) extracted from oat spelts, by Zutropfverfahren (ZT) and Zulaufverfahren (ZL) methods. The methods ZT and ZL differed in their distribution of QM over the reaction period but generated roughly the same QM amount. Steric exclusion chromatography of the ZT and ZL reaction products showed that only the ZT reaction produced high molar mass compounds. Covalent linkages in the ZT reaction involving ether bonds between GAX moiety and alpha carbon of the lignin monomer were confirmed by (13)C NMR and xylanase-based fractionation. The underlying phenomena were further investigated by examining the interactions between GAX and DHP in sorption experiments. GAX and DHPs were shown to interact to form hydrophobic aggregates. In the ZT process, slow addition permitted polymer reorganisation which led to dehydration around the lignin-like growing chains thereby limiting the addition of water on the quinone methide formed during polymerisation and thus favoured lignin-carbohydrate complex (LCC) formation.
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Affiliation(s)
- Abdellatif Barakat
- Unité Mixte de Recherche Fractionnement des AgroRessources et Emballages, Institut National de la Recherche Agronomique, Equipe Parois et Matériaux Fibreux, 51686, Reims Cedex 2, France
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Goh KKT, Hemar Y, Singh H. Viscometric and static light scattering studies on an exopolysaccharide produced by Lactobacillus delbrueckii subspecies bulgaricus NCFB 2483. Biopolymers 2005; 77:98-106. [PMID: 15625727 DOI: 10.1002/bip.20192] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The rheological properties and molecular parameters of a purified exopolysaccharide (EPS) produced by a ropy strain of Lactobacillus delbrueckii subsp. bulgaricus NCFB 2483 were investigated. Using capillary viscometry, an intrinsic viscosity of 2,013 mL/g was obtained. The flow curves were fitted by both the Carreau and the Cross equations for shear-thinning fluids, with the Carreau equation giving a better fit. The Cross equation fitted fairly well the plot of reduced viscosity as a function of reduced shear rate with an exponent value (1 - n) of approximately 0.76, typical of random coil polymers. Furthermore, the concentration dependence of the viscosity plot showed a gradient of approximately 1.1 in the dilute regime and 3.3 in the semidilute regime. Molecular parameters were obtained using a multiangle laser light scattering technique. The 2483 EPS molecules had a weight-average molar mass of approximately 2 x 10(6) Da and a z-average root mean square radius (RMS) of approximately 151 nm. From the light scattering data, the bacterial EPS was also found to have a low polydispersity index (approximately 1.15) and adopt a random coil conformation.
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Affiliation(s)
- Kelvin Kim Tha Goh
- Institute of Food, Nutrition, and Human Health, Massey University, Private Bag 11 222, Palmerston North, New Zealand.
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Venturoli D, Rippe B. Ficoll and dextran vs. globular proteins as probes for testing glomerular permselectivity: effects of molecular size, shape, charge, and deformability. Am J Physiol Renal Physiol 2005; 288:F605-13. [PMID: 15753324 DOI: 10.1152/ajprenal.00171.2004] [Citation(s) in RCA: 312] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Polydisperse mixtures of dextran or Ficoll have been frequently used as molecular probes for studies of glomerular permselectivity because they are largely inert and not processed (reabsorbed) by the proximal tubules. However, dextrans are linear, flexible molecules, which apparently are hyperpermeable across the glomerular barrier. By contrast, the Ficoll molecule is almost spherical. Still, there is ample evidence that Ficoll fractional clearances (sieving coefficients) across the glomerular capillary wall (GCW) are markedly higher than those for neutral globular proteins of an equivalent in vitro Stokes-Einstein (SE) radius. Physical data, obtained by "crowding" experiments or measurements of intrinsic viscosity, suggest that the Ficoll molecule exhibits a rather open, deformable structure and thus deviates from an ideally hard sphere. This is also indicated from the relationship between (log) in vitro SE radius and (log) molecular weight (MW). Whereas globular proteins seem to behave in a way similar to hydrated hard spheres, polydisperse dextran and Ficoll exhibit in vitro SE radii that are much larger than those for compact spherical molecules of equivalent MW. For dextran, this can be partially explained by a high-molecular-size asymmetry. However, for Ficoll the explanation may be that the Ficoll molecule is more flexible (deformable) than are globular proteins. An increased compressibility of Ficoll and an increased deformability and size asymmetry for dextran may be the explanation for the fact that the permeability of the GCW is significantly higher when assessed using polysaccharides such as Ficoll or dextran compared with that obtained using globular proteins as molecular size probes. We suggest that molecular deformability, besides molecular size, shape, and charge, plays a crucial role in determining the glomerular permeability to molecules of different species.
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Porsch B, Andersson M, Wittgren B, Wahlund KG. Molecular mass distribution analysis of ethyl(hydroxyethyl)cellulose by size-exclusion chromatography with dual light-scattering and refractometric detection. J Chromatogr A 2002; 946:69-81. [PMID: 11873984 DOI: 10.1016/s0021-9673(01)01572-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Dual low-angle light scattering and refractometric detection coupled to size-exclusion chromatography provided proof for the presence of a low amount of stable aggregates/particles in ethyl(hydroxyethyl)cellulose. Unlike the correct size-exclusion chromatographic behavior of the parent polysaccharide itself, the aggregates exhibit variable size-dependent weak retention as a function of flow-rate and of ionic strength of the aqueous mobile phase. Therefore, determination of the molecular mass of non-aggregated polymer is possible in aqueous mobile phase containing 0.1 M NaCl under conditions at which aggregates are completely adsorbed on the column packing irrespective of the flow-rate used. Flow-rate and ionic strength-dependent variations of aggregate behavior as well as model size-exclusion experiments with latex particles indicate that they partly carry a minute charge and have a compact structure. Their weak retention under the separation conditions used suggests a difference in their surface chemistry when compared with the dissolved polymer coils which exhibit a correct size-exclusion behavior.
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Affiliation(s)
- Bedrich Porsch
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Prague.
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Porsch B, Nilsson S, Sundelöf LO. Association of Ethyl(hydroxyethyl)cellulose Solutions. Macromolecules 1997. [DOI: 10.1021/ma970171x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- B. Porsch
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, 162 06 Prague 6, Czech Republic
| | - S. Nilsson
- Physical Pharmaceutical Chemistry, BMC, Uppsala, Sweden
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Affiliation(s)
- Howard G. Barth
- DuPont Company, Central Research and Development, Experimental Station, P.O. Box 80228, Wilmington, Delaware 19880-0228, and Rockland Technologies, Inc., 538 First State Boulevard, Newport, Delaware 19804
| | - Barry E. Boyes
- DuPont Company, Central Research and Development, Experimental Station, P.O. Box 80228, Wilmington, Delaware 19880-0228, and Rockland Technologies, Inc., 538 First State Boulevard, Newport, Delaware 19804
| | - Christian Jackson
- DuPont Company, Central Research and Development, Experimental Station, P.O. Box 80228, Wilmington, Delaware 19880-0228, and Rockland Technologies, Inc., 538 First State Boulevard, Newport, Delaware 19804
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García R, Porcar I, Figueruelo JE, Soria V, Campos A. Solution properties of polyelectrolytes XII. Semi-quantitative approach to mixed electrostatic and hydrophobic polymer-gel interactions. J Chromatogr A 1996. [DOI: 10.1016/0021-9673(95)00744-x] [Citation(s) in RCA: 7] [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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Nilsson S, Sundelöf LO, Porsch B. On the characterization principles of some technically important water soluble non-ionic cellulose derivatives. Carbohydr Polym 1995. [DOI: 10.1016/0144-8617(95)00058-5] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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