low molecular weight polymers
Expanding the scope of gels - Combining polymers with low-molecular-weight gelators to yield modified self-assembling smart materials with high-tech applications
... Our research group used Grubb s’ metathesis , a reversible approach to covalent capture capable of ‘error checking’ , to polymerise self-assembled networks of dendritic gelators with peripheral alkenes (Fig. 5). 16 A ...
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Production and Evaluation of Antimicrobial Microcapsules with Essential Oils Using Complex Coacervation
... Complex coacervation is one of the most useful methods to encapsulate fragrances, due to the pres- ence of high volatile molecules inside its formulation [14, 15]. This method is based on the union of two polymers ...
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Noninvasive Characterization of the Effect of Varying PLGA Molecular Weight Blends on In Situ Forming Implant Behavior Using Ultrasound Imaging
... eroding polymers, the interior of the implants degrades more rapidly than the portion exposed to the bath-side solution ...the low diffusivity of the polymer ...
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Roselli_unc_0153D_17959.pdf
... polymerization of a D-A monomer (A, Scheme 4.2). 17 The asymmetric AB monomer, composed of a fluorene linked to a benzothiadiazole, was designed to undergo a Pd-catalyzed Suzuki polycondensation, affording ...
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FORMULATION AND EVALUATION OF SUSTAINED RELEASE MATRIX TABLET QUETIAPINE FUMARATE BY USING NATURAL POLYMERPriya Patil*and Vijay R. MahajanDOWNLOAD/VIEW
... moderate molecular weight Xanthan gum and Fenugreek mucilage are used as a rate controlling polymers to retard the release of drug from a matrix at levels of 15 to 25% w/w in tablets ...
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Crushed Puffed Rice-HPMC-Chitosan based Single-Unit Hydro-dynamically Balanced System for the Sustained Stomach Specific Delivery of Metoprolol Succinate
... fine low-density powder which is not easily wetted by water and can float over the surface of the water for a prolonged period of time (figure 10 ...three polymers with different concentrations: High ...
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Application of controlled polymerisation techniques to the synthesis of polymers for the biomedical industry
... from low molecular weight macromonomers of TRIS has no effect on the modulus and simply increases the oxygen permeability o f the ...high molecular weight pre-polymers because it ...
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Synthesis and properties of a novel biodegradable poly(ester amine) copolymer based on poly(L-lactide) and low molecular weight polyethylenimine for gene delivery
... and low molecular weight PEI, which showed degradability, a good ability to form complexes with DNA, and suitable physicochemical properties for a gene delivery ...These polymers had less ...
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Controlled synthesis of methacrylate and acrylate diblock copolymers via end capping using CCTP and FRP
... Low molecular weight methacrylic polymers/oligomers bearing propenyl ω -end groups have been used as precursors in the synthesis of a range of materials, such as functionalised branched ...
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Modeling Of Tow Wrinkling In Automated Fiber Placement Based On Geometrical Considerations
... dispersion is the lack of compatibility between the largely trans configuration polyisoprene and the pure cis configuration matrix. Experiments with different matrices should be carried out to help elucidate and address ...
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REVIEW ON GASTRORETENTIVE MUCOADHESIVE MICROSPHERE
... optimum molecular weight for maximum bioadhesion depends upon type of mucoadhesive polymer at ...molecular weight. For example, polyethylene glycol (PEG), with a molecular weight ...
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Reaction behavior of cellulose in an ionic liquid, 1-ethyl-3-methylimidazolium chloride
... various low molecular weight compounds such as cellobiose, cel- lobiosan, glucose, levoglucosan and 5-hydroxymethylfurf- ...the low molecular weight compounds reacted with the ...
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Molecular fingerprinting of particulate organic matter as a new tool for its source apportionment: changes along a headwater drainage in coarse, medium and fine particles as a function of rainfalls
... This study emphasizes the suitability of molecular analysis of POM using THM-GC-MS to investigate the sources of POM in headwater catchments. This analytical technique needs less than 5 mg of freeze-dried matter, ...
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Influx of kininogens into nasal secretions after antigen challenge of allergic individuals
... secretions. Allergic individuals (n = 6) and nonallergic controls (n = 5) were challenged with antigen; and by using specific radioimmunoassays, nasal washes, obtained before and after challenge, were assayed for high ...
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Vol 43, No 1 (2013)
... at low pH ...The molecular weights of ω-gliadins are between 46 and 74 KDa, and the α-, β- and γ-gliadins ranging from 30 to 45 Kda (Müller and Wieser, ...
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Nitroxide Mediated Photo Controlled/Living Radical Polymerization of Methacrylic Acid
... resulting polymers were shifted to the higher molecular weight side with an increase in the conversion, implying the livingness of the ...conversion-molecular weight plots for the ...
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Arterial indications for the low molecular weight heparins
... different molecular weight distribution profiles, small differences in their specific activities (anti-Xa : anti-IIa activities), different rates of plasma clear- ance, and some differences in their ...
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Development and characterization of polymeric microspheres for controlled release protein loaded drug delivery system
... different molecular weight and hydrophilicity of poly(D,L-lactide-co-glycolide) polymers were non porous, smooth surfaced and spherical in structure under scanning electron microscope with a mean ...
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Structural determinants in a library of low molecular weight gelators
... Molecular packing is governed by the naphthalene moiety fXRD patterns were collected from aligned samples of the hydrogels, prepared by air-drying the gels to form an aligned fibre sample. To ensure that the ...
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Low molecular weight chitosan nanoparticulate system at low N:P ratio for nontoxic polynucleotide delivery
... high molecular weight at high amine-to-phosphate (N:P) ratios apparently required for efficient ...that low molecular weight chitosan (LMW-CS) formulations at low N:P ratios are ...
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