Abstract:
:The sorption of 5-fluorouracil from aqueous solutions onto poly(methyl methacrylate) was investigated. Linear sorption isotherms were obtained and no crystallinity of the nanoparticles after sorption was detectable by X-ray analysis indicating a partitioning of the drug into the polymer particles-forming a solid solution. Standard enthalpy, standard entropy and standard free energy of sorption were -36.9 kJ mol-1, -85.0 J mol-1 K-1 and -12.0 kJ mol-1, respectively.
journal_name
J Microencapsuljournal_title
Journal of microencapsulationauthors
Yalabik-Kas HS,Kreuter J,Hincal AA,Speiser PPdoi
10.3109/02652048609031560subject
Has Abstractpub_date
1986-04-01 00:00:00pages
71-5issue
2eissn
0265-2048issn
1464-5246journal_volume
3pub_type
杂志文章abstract::The chitosan microspheres were prepared by a membrane emulsification method with variations of the N2 gas pressure and the chitosan concentration. The pressure of N2 gas was varied within the range from 0.2 x 10(5) to 0.8 x 10(5) Pa at chitosan concentration 1.5 wt%. In addition, the concentration of chitosan was vari...
journal_title:Journal of microencapsulation
pub_type: 杂志文章
doi:10.1080/02652040410001729304
更新日期:2004-08-01 00:00:00
abstract::Objective: To improve the water solubility and enhance the oral bioavailability of gambogenic acid (GNA). Methods: GNA-phospholipid complex (GNA-PLC) micelles were successfully prepared by anti-solvent method. Results: The encapsulation efficiency of GNA-PLC micelles can reach 99.33 % (w/w). The average particle size ...
journal_title:Journal of microencapsulation
pub_type: 杂志文章
doi:10.1080/02652048.2019.1656294
更新日期:2019-09-01 00:00:00
abstract::Phosphatidylcholine (from egg yolk)-cholesterol-stearylamine (7:2:2.25, molar ratio) liposomes when associated with cyclosporin A (phosphatidylcholine:cyclosporin A = 2:0.07, molar ratio) do not inhibit significantly the biosynthesis of [3H]polyglycerophosphatides and [3H]phosphatidylinositol in mitochondrial and micr...
journal_title:Journal of microencapsulation
pub_type: 杂志文章
doi:10.3109/02652048909098018
更新日期:1989-04-01 00:00:00
abstract::A new material for the microencapsulation of biological systems was discovered and characterized with regards to the effects of reaction conditions on product yield. By using poly(cyanoacrylate ester), membrane microcapsules were produced with sufficient strength and porosity to be effective in a process environment f...
journal_title:Journal of microencapsulation
pub_type: 杂志文章
doi:10.1080/02652040110055225
更新日期:2002-11-01 00:00:00
abstract::Microencapsulation aims to protect polyunsaturated fatty acids against oxidation by embedding oil droplets in a solid matrix. The effect of the oil droplet size on the oxidation was evaluated under consideration of the non-encapsulated oil and the powder particle size. An O/W emulsion (1.6%(w/w) soy protein; 30.4%(w/w...
journal_title:Journal of microencapsulation
pub_type: 杂志文章
doi:10.1080/02652048.2020.1713243
更新日期:2020-03-01 00:00:00
abstract::Graft copolymer polyethylenimine-graft-poly(N-vinylpyrrolidone) (PEI-g-PVP) was prepared by coupling mono carboxyl-terminated PVP (PVP-COOH) with PEI using N,N'-dicyclohexylcarbodiimide (DCC) and N-hydroxysuccinimide (NHS) as coupling agents. In aqueous medium, PVP-g-PEI can self-assemble into stable polyion complex m...
journal_title:Journal of microencapsulation
pub_type: 杂志文章
doi:10.3109/02652048.2010.534823
更新日期:2011-01-01 00:00:00
abstract::Polyurethane modified with polylactic acid microcapsules were fabricated for controlled release of chlorpyrifos (one of the high usage solid phosphorous insecticides) via interfacial polymerisation with diphenylmethane diisocyanate, polyether triol, 1,4-butanediol and polylactic acid as modifier. The structure, morpho...
journal_title:Journal of microencapsulation
pub_type: 杂志文章
doi:10.1080/02652048.2019.1599075
更新日期:2019-01-01 00:00:00
abstract::The diblock copolymers based on PBLG and PEO (GE) were synthesized and characterized. Nanoparticles showed spherical shape from the observations of TEM and approved core-shell structure. Drug contents were increased with use of higher initial drug concentration and higher Mw of GE. Nifedipine (NFD) release rate was sl...
journal_title:Journal of microencapsulation
pub_type: 杂志文章
doi:10.1080/02652040410001729241
更新日期:2004-06-01 00:00:00
abstract::Microencapsulation of ketoprofen using Eudragit RS and RL (acrylic resins) was investigated based on the dispersion system of ketoprofen-containing acetone in liquid paraffin. Aluminium tristearate was used as an additive for the preparation of microcapsules. Good reproducibility was observed in the microencapsulation...
journal_title:Journal of microencapsulation
pub_type: 杂志文章
doi:10.3109/02652048609021799
更新日期:1986-10-01 00:00:00
abstract::An extrusion-based encapsulation process has been developed for making salt grain-sized iron premix for salt fortification. The first step of extrusion agglomeration process has been studied and reported previously. The focus of this study is on the optimisation of the colour-masking and polymer coating steps. Several...
journal_title:Journal of microencapsulation
pub_type: 杂志文章
doi:10.3109/02652048.2011.651493
更新日期:2012-01-01 00:00:00
abstract::This article describes the physicochemical properties of chitosan-coated liposomes containing skin-protecting agents, coenzyme Q10 and alpha-lipoic acid (CCAL). CCAL had a spherical shell-core structure and liposomes inverted the surface charge from negative to positive after coating with chitosan. Compared with the u...
journal_title:Journal of microencapsulation
pub_type: 杂志文章
doi:10.3109/02652048.2014.973072
更新日期:2015-01-01 00:00:00
abstract::The in vivo absorption of crystalline nitrofurantoin and the dosage forms of nitrofurantoin prepared with microcapsules were carried out in man by determination of urinary excretion of unchanged nitrofurantoin. The cumulative amount of drug excreted and the duration of the therapeutic urine levels were compared. The m...
journal_title:Journal of microencapsulation
pub_type: 杂志文章
doi:10.3109/02652049409040444
更新日期:1994-03-01 00:00:00
abstract::Radioembolization is used in diagnostic imaging of the lungs and for radioembolization therapy of hepatic tumours. Presently, 99mTc labelled macroaggregates or microspheres of human serum albumin (HAM) are used for this purpose. Poly lactic acid (PLA) is biodegradable, like HAM, and, unlike HAM, is not a blood product...
journal_title:Journal of microencapsulation
pub_type: 杂志文章
doi:10.1080/026520400405750
更新日期:2000-07-01 00:00:00
abstract::In this study, recombinant human interleukin-2 (rhIL-2) containing poly(lactic-co-glycolic acid) (PLGA) microparticles were prepared for pulmonary administration by modified w/o/w double emulsion solvent extraction method and the effects of various formulation parameters on the physicochemical properties of the microp...
journal_title:Journal of microencapsulation
pub_type: 杂志文章
doi:10.3109/02652048.2011.599438
更新日期:2011-01-01 00:00:00
abstract::Monodisperse albumin microspheres were successfully prepared by both chemical or thermal hardening methods via membrane emulsification using microporous glass membranes with uniform pore sizes. The monodispersity of the microspheres was found to depend strongly on parameters such as albumin concentration, emulsifier c...
journal_title:Journal of microencapsulation
pub_type: 杂志文章
doi:10.3109/02652049809008248
更新日期:1998-09-01 00:00:00
abstract::Microencapsulation is almost exclusively performed in batch processes. With today's chemistry increasingly performed in flow reactors, this work aims to realise a continuous reactor setup for the encapsulation of an ester with a polyuria (PU) shell. The generation of an emulsion template is performed in a recirculatio...
journal_title:Journal of microencapsulation
pub_type: 杂志文章
doi:10.1080/02652048.2019.1633433
更新日期:2019-06-01 00:00:00
abstract::This paper describes a novel approach to prepare and characterize calcium-shellac spheres as a carrier of a tooth whitening agent carbamide peroxide. Calcium-shellac spheres were prepared using an extrusion technique based on dropping aqueous ammonium shellac solution into calcium chloride solution. The effects of for...
journal_title:Journal of microencapsulation
pub_type: 杂志文章
doi:10.1080/02652040802049638
更新日期:2008-12-01 00:00:00
abstract::The purpose of present research work was to develop mucoadhesive microspheres for nasal delivery with the aim to avoid hepatic first-pass metabolism, improve therapeutic efficacy and enhance residence time. For the treatment of migraine, hydroxypropyl methylcellulose (HPMC) K4M and K15M based microspheres containing s...
journal_title:Journal of microencapsulation
pub_type: 杂志文章
doi:10.3109/02652040802685241
更新日期:2009-12-01 00:00:00
abstract::The development of microparticulate food particles for marine suspension-feeders is discussed with respect to the difficulties of nutrient delivery in the aquatic environment and to feeding and digestion in crustacea and bivalve molluscs. Loss of nutrients from particles suspended in seawater must be minimized by eith...
journal_title:Journal of microencapsulation
pub_type: 杂志文章,评审
doi:10.3109/02652048509049572
更新日期:1985-01-01 00:00:00
abstract::In this study, ethylcellulose and acrylate-methacrylate copolymer (Eudragit RL 100, Eudragit RS 100) membranes were prepared by using appropriate types and amounts of plasticizers. Thirty percent and 20% of triacetin based on polymer weight were found to be appropriate plasticizers for ethylcellulose membranes and acr...
journal_title:Journal of microencapsulation
pub_type: 杂志文章
doi:10.3109/02652049609026048
更新日期:1996-11-01 00:00:00
abstract::Magnetic and pH-responsive chitosan microcapsules (MPRCMCs) were prepared by a simple sonochemical method. Superparamagnetic oleic acid modified Fe3O4 nanoparticles (OA-Fe3O4 NPs) and hydrophobic drugs could be directly loaded into MPRCMCs during sonication. The obtained microcapsules had a well-defined spherical morp...
journal_title:Journal of microencapsulation
pub_type: 杂志文章
doi:10.3109/02652048.2016.1144817
更新日期:2016-01-01 00:00:00
abstract::Silica gel microspheres are ideal materials for bioencapsulation due to their mechanical properties, biocompatibility, and stability. Encapsulated cells are isolated from the environment and protected from predators, changes in pH, and osmotic stress. However methods for the production of silica gel microspheres suita...
journal_title:Journal of microencapsulation
pub_type: 杂志文章
doi:10.1080/02652048.2016.1202346
更新日期:2016-08-01 00:00:00
abstract::Moisture curing type self-healing microcapsules become more attractive, while instability of active core material crippled the efficiency of self-healing behaviour. Polyurea (PU)/melamine formaldehyde (MF) double-layered self-healing microcapsules containing isophorone diisocyanate (IPDI) core with high and stable cor...
journal_title:Journal of microencapsulation
pub_type: 杂志文章
doi:10.1080/02652048.2016.1178352
更新日期:2016-06-01 00:00:00
abstract::The body distribution of surfactant-coated and non-coated poly(methyl methacrylate) nanoparticles with a size of 131 +/- 30 nm after intravenous injection into rats was investigated. The coating materials were poloxamine 904, poloxamine 908, poloxamine 1508, poloxamer 338, and Brij 35. These materials were preselected...
journal_title:Journal of microencapsulation
pub_type: 杂志文章
doi:10.3109/02652049209021219
更新日期:1992-01-01 00:00:00
abstract::The present study is part of a larger project whose aim is to understand how the oyster Crassostrea gigas develops its aromas from a lipid precursor, the eicosapentaenoic acid (EPA), in glyceride form. The objective of this study is, therefore, to prepare an encapsulation process that will enable the bivalve to be sup...
journal_title:Journal of microencapsulation
pub_type: 杂志文章
doi:
更新日期:2003-01-01 00:00:00
abstract::This study explored a liquid phase coating technique to produce polymethyl methacrylate (PMMA)-coated alginate microspheres. Alginate microspheres with a mean diameter of 85.6 microm were prepared using an emulsification method. The alginate microspheres, as cores, were then coated with different types of PMMA by a li...
journal_title:Journal of microencapsulation
pub_type: 杂志文章
doi:10.1080/02652040500273936
更新日期:2005-12-01 00:00:00
abstract::Oil-containing polyterephthalamide microcapsules were synthesized by the interfacial polymerization of an oil-soluble monomer (terephthaloyl dichloride, TDC) and a mixture of two water-soluble monomers (diethylenetriamine, DETA, and 1, 6-hexamethylenediamine, HMDA). The influence of several synthesis parameters (e.g. ...
journal_title:Journal of microencapsulation
pub_type: 杂志文章
doi:10.1080/02652040110055243
更新日期:2001-11-01 00:00:00
abstract:AIM:To study the effect of poly(d,l-lactic-co-glycolic acid) (PLGA) microparticles (MPs) preparation techniques on particle physical characterization with special emphasis on burst drug release. METHODS:A basic drug clozapine was used in combination with acid-terminated PLGA. Two approaches for MP preparation were com...
journal_title:Journal of microencapsulation
pub_type: 杂志文章
doi:10.3109/02652048.2014.913724
更新日期:2014-01-01 00:00:00
abstract::Latex particles coated with either amino or carboxyl groups were labelled with 99mTc. Two labelling methods were used: (1) direct labelling with tin reduction and (2) ligand exchange with tin pyrophosphate. Labelling efficiency and the radiochemical impurities were determined by thin-layer chromatography. Effect of [S...
journal_title:Journal of microencapsulation
pub_type: 杂志文章
doi:10.3109/02652049309015313
更新日期:1993-01-01 00:00:00
abstract::Anal fissure is common and painful disease of anorectum. In this study, microparticles containing nifedipine and lidocaine HCl were prepared by spray drying and applied to bio-degradable and bio-stable tampons. Characterization of microparticles was determined by visual analyses, mass yield, particle size measurement,...
journal_title:Journal of microencapsulation
pub_type: 杂志文章
doi:10.1080/02652048.2017.1393113
更新日期:2017-12-01 00:00:00