Results 201 to 210 of about 2,666 (259)

Biodegradation of Poly(Lactic Acid) Biocomposites under Controlled Composting Conditions and Freshwater Biotope

Polymers, 2021
The influence of additives such as natural-based plasticiser acetyl tributyl citrate (ATBC), CaCO3 and lignin-coated cellulose nanocrystals (L-CNC) on the biodegradation of polylactic acid (PLA) biocomposites was studied by monitoring microbial metabolic
Pavel Brdlik, Martin Borůvka, Luboš Bĕhálek   +2 more
exaly   +2 more sources

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Biodegradable microparticles for the controlled delivery of oligonucleotides

International Journal of Pharmaceutics, 2002
Microspheres allowing the controlled release of the model oligonucleotide pdT16 were designed. The oligonucleotide, alone or associated with polyethylenimine (PEI) at different nitrogen/phosphate ratios, was encapsulated within poly(lactide-co-glycolide) microspheres prepared by the multiple emulsion-solvent evaporation technique.
DE ROSA, GIUSEPPE, QUAGLIA, FABIANA, LA ROTONDA, MARIA IMMACOLATA, M. BESNARD, E. FATTAL   +4 more
openaire   +3 more sources

Biodegradable polymersomes for controlled drug release

Journal of Controlled Release, 2008
Hydrophilic fluorescein isothiocyanate-dextran (FD, mol. weight 4000 g/mol) could be readily incorporated in polymersomes (PS) made of different amphiphilic biodegradable block copolymers based on PEG-PDLLA, PEG-PCL, and PEG-PTMC. The FD release from these polymersomes in PBS at 37 °C was complete within approximately 10 days.
Zhou, W., Feijen, Jan
openaire   +3 more sources

Biodegradable Polysaccharides for Controlled Drug Delivery

ChemPlusChem, 2016
AbstractPolysaccharides are ideal candidates for drug delivery and biomedical applications as they are easily obtained from natural sources. Furthermore, they can be subjected to a wide range of chemical and enzymatic reactions, they have biocompatible and biodegradable properties and have inherently low immunogenicity.
Janarthanan, Pushpamalar, Anand Kumar, Veeramachineni, Cally, Owh, Xian Jun, Loh   +3 more
openaire   +2 more sources

A biodegradable filament for controlled drug delivery

Journal of Controlled Release, 2009
Biodegradable filaments (diameters of 250-300 microm) for the controlled delivery of dexamethasone or levofloxacin are described. Filaments are prepared by wet-spinning solutions of poly(lactide-co-glycolide) (PLGA) and drug dissolved in dimethyl sulfoxide (DMSO) into a coagulation bath of water.
Mack, Brendan C., Wright, Kenneth W., Davis, Mark E.   +2 more
openaire   +3 more sources

Controlled Synthesis of Biodegradable Polyesters

2001
The application of new initiators for the ring-opening polymerization of cyclic esters has markedly improved the macromolecular engineering of biodegradable polyesters. A wide variety of complex macromolecular architectures can nowadays be prepared using these initiators.
Dijkstra, Pieter J., Zhong, Zhiyuan, Stevels, Wim M., Feijen, Jan   +3 more
openaire   +2 more sources

The Control of Biodegradation of Gutting Fluid

Industrial Lubrication and Tribology, 1970
THE PURPOSE of the following report is to describe a trial set up to test the practicability of extending the effective working life of a cutting emulsion and to investigate the nature of the problems associated with biochemical breakdown. The trial covered a period of more than two years, with a break of two months in the middle, when the treatment ...
E.H. Littler, B.E. Purkiss
openaire   +1 more source

Biodegradable Nanobowls with Controlled Dents

ACS Macro Letters
Nanobowls show promising potential in biomedical applications, such as bioimaging, cargo delivery, and disease theranostics, due to their unique concave structure and interior cavities. However, the lack of biodegradable nanobowls with manipulable size (especially the dent size) still exists as an obstacle for their in-depth exploration and application
Jinhui Jiang, Min Sun, Qianxi Gu, Shangning Liu, Hui Sun, Zhen Fan, Yunqing Zhu, Jianzhong Du   +7 more
openaire   +2 more sources

Biodegradable Chitosan Matrix for the Controlled Release of Steroids

Biomaterials, Artificial Cells and Immobilization Biotechnology, 1991
Chitosan, a polysaccharide, having structural characteristics similar to glycosaminoglycans, seems to be nontoxic and bioabsorbable. This study highlights the use of chitosan matrix for controlled drug delivery systems. The steroid drugs, namely testosterone, progesterone and beta-oestradiol were mixed with chitosan and the films were prepared by ...
T, Chandy, C P, Sharma
openaire   +2 more sources

Polymer Encapsulation of Magnesium to Control Biodegradability and Biocompatibility

Journal of Nanoscience and Nanotechnology, 2014
Clinical utility of biodegradable magnesium implants is undermined by the untimely degradation of these materials in vivo. Their high corrosion rate leads to loss of mechanical integrity, peri-implant alkalization and localised accumulation of hydrogen gas. Biodegradable coatings were produced on pure magnesium using RF plasma polymerisation.
Bazaka, Kateryna, Ketheesan, Natkunam, Jacob, Mohan V.   +2 more
openaire   +3 more sources