Results 281 to 290 of about 17,196,143 (353)

Antioxidant control of polymer biodegradation

Macromolecular Symposia, 1999
AbstractHydrocarbon‐based synthetic polymers are versatile and cost‐effective materials in packaging and agriculture. Unstabilised polyolefins are known to biodegrade through peroxidation initiated by both abiotic and biotic and mechanisms. Both abiotic and biotic peroxidation can be accelerated and controlled by specially designed antioxidants and ...
openaire   +1 more source

Biodegradable kinetics of plastics under controlled composting conditions

Waste Management, 2011
This study models and evaluates the kinetics of C-CO(2) evolution during biodegradation of plastic materials including Polyethylene (PE), PE/starch blend (PE/starch), microcrystalline cellulose (MCE), and Polylactic acid (PLA). The aerobic biodegradation under controlled composting conditions was monitorated according to ISO 14855-1, 2004. The kinetics
Thanawadee, Leejarkpai, Unchalee, Suwanmanee, Yosita, Rudeekit, Thumrongrut, Mungcharoen   +3 more
openaire   +2 more sources

Microfibers generated from the laundering of cotton, rayon and polyester based fabrics and their aquatic biodegradation.

Marine Pollution Bulletin, 2019
The effect of fiber type (cotton, polyester, and rayon), temperature, and use of detergent on the number of microfibers released during laundering of knitted fabrics were studied during accelerated laboratory washing (Launder-Ometer) and home laundering ...
M. Zambrano, J. Pawlak, J. Daystar, Mary A. Ankeny, Jay J. Cheng, R. Venditti   +5 more
semanticscholar   +1 more source

Biodegradable Nano‐ and Microparticles with Controlled Surface Properties

Macromolecular Symposia, 2005
AbstractMethods suitable for formation of polyester nano‐ and microspheres with controlled surface properties are described. The title nano‐ and microspheres composed of polylactides or poly(ϵ‐caprolactone) were obtained either directly, during dispersion polymerization of corresponding monomers, or by self‐assembly of block copolymers containing ...
SLOMKOWSKI S., GADZINOWSKI M., SOSNOWSKI S., DE VITA C., PUCCI, ANDREA, CIARDELLI, FRANCESCO, JAKUBOWSKI W., MATYJASZEWSKI K.   +7 more
openaire   +2 more sources

Controlled delivery of antibacterial proteins from biodegradable matrices

Journal of Controlled Release, 1998
Prosthetic valve endocarditis is an infrequent, but serious complication of cardiac valve replacement. The infection is caused by the adherence of bacteria to the prosthetic valve or to tissue at the site of implantation. Recently it was shown that antibacterial peptides from blood platelets are involved in clearance and killing of bacteria adhering to
Kuijpers, A. J., Engbers, G. H., van Wachem, P. B., Krijgsveld, J., Zaat, S. A., Dankert, J., Feijen, J.   +6 more
openaire   +4 more sources

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

Microstructured Biodegradable Fibers for Advanced Control Delivery

Advanced Functional Materials, 2020
AbstractBiodegradable polymers are increasingly employed at the heart of therapeutic devices. Particularly in the form of thin and elongated fibers, they offer an effective strategy for controlled release in a variety of biomedical configurations such as sutures, scaffolds, wound dressings, surgical or imaging probes, and smart textiles. So far however,
Shahrzad Shadman, Tung Nguyen‐Dang, Tapajyoti Das Gupta, Alexis Gérald Page, Inès Richard, Andreas Leber, Jurgis Ruza, Govind Krishnamani, Fabien Sorin   +8 more
openaire   +1 more source

Biodegradable Hydrogels for Controlled Drug Release

2010
Biodegradable hydrogels for controlled drug release are based on functionalized polymer systems and are of great importance in polymer therapeutics. The most relevant aspects of biodegradable polymeric hydrogels for the release of specific drugs and bio-active compounds are the nature of biodegradable polymer, the gelation process by physical or ...
Luis García, María Rosa Aguilar, Julio San Román   +2 more
openaire   +1 more source

Spatially controlled cell engineering on biodegradable polymer surfaces

The FASEB Journal, 1998
Controlling receptor‐mediated interactions between cells and template surfaces is a central principle in many tissue engineering procedures (1–3). Biomaterial surfaces engineered to present cell adhesion ligands undergo integrin‐mediated molecular interactions with cells (1, 4, 5), stimulating cell spreading, and differentiation (6–
N, Patel, R, Padera, G H, Sanders, S M, Cannizzaro, M C, Davies, R, Langer, C J, Roberts, S J, Tendler, P M, Williams, K M, Shakesheff   +9 more
openaire   +2 more sources

Controlled Release of Interleukin-2 from Biodegradable Microspheres

Nature Biotechnology, 1990
We have evaluated the use of biodegradable poly(DL-lactide-co-glycolide) microspheres for the controlled release of interleukin-2 (IL-2) and its modified forms: succinyl IL-2 (SIL-2) and polyethylene glycol-modified IL-2 (PEG IL-2). We show that a microsphere formulation can be prepared from PEG IL-2 using HSA as an excipient which, after an initial ...
M S, Hora, R K, Rana, J H, Nunberg, T R, Tice, R M, Gilley, M E, Hudson   +5 more
openaire   +2 more sources