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M C Levy et al.
Journal of pharmaceutical sciences, 80(6), 578-585 (1991-06-01)
Fourier transform infrared (FT-IR) spectroscopic studies were performed on microcapsules prepared through interfacial cross-linking of human serum albumin (HSA) with terephthaloylchloride at various pH values (5.9 to 11). Correlations were established with morphology and size of microcapsules. Increasing polycondensation pH
Hong Chang et al.
Biofabrication, 2(3), 035002-035002 (2010-09-09)
Microfluidics enables scale reduction in sample volume with obvious benefits for reagent conservation. In contrast to conventional macro-scale flow, microfluidics also offers unprecedented control over flow dynamics. In particular, laminar flow is readily achieved, allowing for new analytical and synthetic
Tiefan Huang et al.
Nature communications, 11(1), 5882-5882 (2020-11-20)
Engineering membranes for molecular separation in organic solvents is still a big challenge. When the selectivity increases, the permeability tends to drastically decrease, increasing the energy demands for the separation process. Ideally, organic solvent nanofiltration membranes should be thin to
Mikhail Ya Goikhman et al.
Luminescence : the journal of biological and chemical luminescence, 33(3), 559-566 (2018-03-02)
A series of anthrazoline-containing monomers are synthesized, and eight co-polyamides of different chemical structures, containing 1,9-anthrazoline fragments in the main chain, are obtained and investigated. Photoluminescent, stress-strain, and thermal properties of these polymers are studied. It is shown that polymers
N Pariot et al.
International journal of pharmaceutics, 211(1-2), 19-27 (2001-01-04)
Microcapsules were prepared by interfacial cross-linking of beta-cyclodextrins (beta-CD) with terephthaloyl chloride (TC). Batches were prepared from beta-CD solutions in 1 M NaOH, using 5% TC and a 30 min reaction time. Microcapsules were studied with respect to morphology (microscopy)
D Hettler et al.
Journal of microencapsulation, 11(2), 213-224 (1994-03-01)
Microcapsules were prepared from three proteins, namely human serum albumin (HSA), bovine fibrinogen and ovalbumin, by an interfacial crosslinking process using terephthaloylchloride. They were further treated with alkaline hydroxylamine in order to disrupt ester and anhydride bonds in the walls.
Jessy Shiju et al.
Polymers, 12(11) (2020-11-25)
This paper reports the preparation of Kevlar-Nomex copolymer nano-composites with exfoliated pristine and functionalized graphene sheets (Grs). The graphene oxide (GrO) platelets were amidized by the reaction of amine-terminated aramid (Ar) with the functional groups present on the GrO surface
William R Berti et al.
Environmental science & technology, 40(20), 6330-6335 (2006-11-24)
The phthaloyl chloride isomers, terephthaloyl chloride (TCl) and isophthaloyl chloride (ICl), are high production volume chemicals used in polymers to impartflame resistance, chemical resistance, and temperature stability and as water scavengers. In these studies, we determined the hydrolytic stability of
S P Vyas et al.
Pharmaceutica acta Helvetiae, 74(1), 51-58 (2000-04-05)
Nonionic surfactant vesicles were prepared using Span 60, cholesterol and dicetyl phosphate. The prepared multilamellar vesicles (MLVs) were coated by interfacial polymerization technique using p-phthaloyl dichloride and L-lysine. The formation of the polymeric coat was confirmed by optical microscopic and
N V Larionova et al.
International journal of pharmaceutics, 189(2), 171-178 (1999-10-28)
The objective of this study is to demonstrate the feasibility of microcapsules containing a protein and a proteinase inhibitor in order to allow the oral administration of proteic or peptidic drug. Starch/bovine serum albumin mixed-walled microcapsules were prepared using interfacial
Ourania N Kostopoulou et al.
PloS one, 10(8), e0134526-e0134526 (2015-08-13)
As fight against antibiotic resistance must be strengthened, improving old drugs that have fallen in reduced clinical use because of toxic side effects and/or frequently reported resistance, like chloramphenicol (CAM), is of special interest. Chloramphenicol (CAM), a prototypical wide-spectrum antibiotic
Hai-Quan Mao et al.
Journal of biomaterials science. Polymer edition, 16(2), 135-161 (2005-03-30)
To develop biodegradable polymers with favorable physicochemical and biological properties, we have synthesized a series of poly(terephthalate-co-phosphate)s using a two-step poly-condensation. The diol 1,4-bis(2-hydroxyethyl) terephthalate was first reacted with ethylphosphorodichloridate (EOP), and then chain-extended with terephthaloyl chloride (TC). Incorporation of
Synthesis of well-defined azido and amino end-functionalized polystyrene by atom transfer radical polymerization.
Matyjaszewski K, et al.
Macromolecular Rapid Communications, 18(12), 1057-1066 (1997)
Silvio Curia et al.
ChemSusChem, 11(15), 2529-2539 (2018-06-21)
The utilization of wood-derived building blocks (xylochemicals) to replace fossil-based precursors is an attractive research subject of modern polymer science. Here, we demonstrate that bisguaiacol (BG), a lignin-derived bisphenol analogue, can be used to prepare biobased polyesters with remarkable thermal
Kathryn E O'Harra et al.
Polymers, 12(6) (2020-06-04)
Here we introduce the synthesis and thermal properties of a series of sophisticated imidazolium ionenes with alternating amide-amide or amide-imide backbone functionality, and investigate the structural effects of mono(imidazolium) and unprecedented tris(imidazolium) ionic liquids (ILs) in these ionenes. The new
Jessy Shiju et al.
Nanomaterials (Basel, Switzerland), 8(5) (2018-05-08)
In this work in-situ polymerization technique has been used to chemically link the functionalized multiwalled carbon nanotubes (CNTs) with aramid matrix chains. Phenylene diamine monomers were reacted in the first stage with the carboxylic acid functionalized CNTs and then amidized
Greeshma Nair et al.
Chembiochem : a European journal of chemical biology, 7(11), 1683-1689 (2006-10-20)
We report a novel technique for preparing cross-linked protein membranes within microchannels by using an interfacial cross-linking reaction. Glass microchannels with a Y input were assembled by using a simple adhesive bonding technique to achieve dual, parallel laminar flows. Membrane
Abohachem Laguecir et al.
Current drug delivery, 1(2), 111-117 (2005-11-25)
Various polyamide microcapsules were prepared via an inverse emulsion system (water in oil) by interfacial polycondensation of terephthaloyl dichloride with the aliphatic diamines ethylene diamine (EDA) and 1,6-hexane diamine (HMDA), and the aromatic diamine 1,4-phenylene diamine (PDA). Three types of
Li Yang et al.
Nanoscale, 11(30), 14210-14215 (2019-07-19)
Although chiral functional materials showing circularly polarized luminescence (CPL) are being widely reported, it remains a challenge to provide convenient and universal strategies for constructing controllable CPL-active materials with a high luminescence dissymmetry factor (glum). Herein, the supramolecular chirality as
Florian Diot-Néant et al.
ChemSusChem, 13(10), 2613-2620 (2020-04-03)
The already-reported, low-yielding, and non-sustainable Et3 N-mediated homocoupling of levoglucosenone (LGO) into the corresponding LGO-CyreneTM diketone has been revisited and greened-up. The use of methanol as both a renewable solvent and catalyst and K2 CO3 as a safe inorganic base
Kathryn E O'Harra et al.
Membranes, 10(3) (2020-04-03)
Here, we report the synthesis and thermophysical properties of seven primarily aromatic, imidazolium-based polyamide ionenes. The effects of varied para-, meta-, and ortho-connectivity, and spacing of ionic and amide functional groups, on structural and thermophysical properties were analyzed. Suitable, robust
P Persico et al.
Journal of microencapsulation, 22(5), 471-486 (2005-12-20)
Jojoba oil containing polyamide microcapsules having diameter of approximately 5 microm were prepared by inter-facial polycondensation by direct method (oil-in-water). Qualitative effects of both the formulation and the process parameters on microcapsules characteristics were investigated by SEM observations. Morphological analysis
S Benita et al.
Journal of microencapsulation, 1(4), 317-327 (1984-10-01)
The interfacial polymerization process used in the present study produced individual cross-linked albumin microcapsules, the particle size of which depended on the emulsification stirring rate. The variation in cross-linking agent concentration altered the microcapsule wall properties. As shown by SEM
M C Levy et al.
Journal of pharmaceutical sciences, 84(2), 161-165 (1995-02-01)
Microcapsules were prepared from human serum albumin (HSA) by interfacial cross-linking with terephthaloyl chloride (TC). TC concentrations were increased from 0.5 to 5% w/v, while pH (9.8) and reaction time (30 min) were kept constant. Fourier transform infrared (FT-IR) spectra
M Zhang et al.
Journal of microencapsulation, 12(4), 425-435 (1995-07-01)
Oil containing microcapsules were prepared by using phthaloyl dichloride as an oil-soluble monomer and diethylene triamine (DETA) as a water-soluble monomer. The diameter of the microcapsules decreased and their distribution became narrower and sharper as the emulsifying time was increased
Shao-Hua Huang et al.
Chirality, 19(2), 129-140 (2006-11-23)
Two new chiral polymers of different molecular weights were synthesized by the copolymerization of (1R,2R)-(+)-1,2-diphenylethylenediamine, phenyl diisocyanate and terephthaloyl chloride. The polymers were immobilized on aminated silica gel to afford two chiral stationary phases. The polymers and the corresponding chiral
Hideaki Ichiura et al.
Chemosphere, 256, 127143-127143 (2020-05-31)
In this study, preparation of a nylon film-TiO2 composite sheet with both physical durability under UV irradiation and TiO2 photocatalysis functionality was investigated. First, a nylon film was directly prepared on paper by interfacial polymerization using ethylenediamine and terephthaloyl chloride
S Alexandridou et al.
Journal of microencapsulation, 18(6), 767-781 (2001-11-07)
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. concentration ratio of the
Yuushou Nakayama et al.
International journal of molecular sciences, 21(10) (2020-05-28)
Poly(ester amide)s are attracting attention because they potentially have excellent thermal and mechanical properties as well as biodegradability. In this study, we synthesized a series of novel poly(ester amide)s by introducing γ-aminobutyric acid (GABA) regularly into polyesters, and investigated their
Kyounghwan Oh et al.
ACS omega, 5(28), 17463-17470 (2020-07-28)
We devised a novel strategy of two-stage anionic polymerization of (ε-caprolactam) in a twin screw extruder to control the generation of branched structures. Long-living anions of nylon 6 prepared in the first extrusion gave rise to a change in the
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