نتایج جستجو برای: polyester
تعداد نتایج: 5347 فیلتر نتایج به سال:
This study reports the design, preparation, testing and surface characterization of uniform films deposited by sputtering Ag and Ta on non-heat resistant polyester to evaluate the Escherichia coli inactivation by TaON, TaN/Ag, Ag and TaON/Ag polyester. Co-sputtering for 120 s Ta and Ag in the presence of N₂ and O₂ led to the faster E. coli inactivation by a TaON/Ag sample within ∼40 min under v...
Clothing can absorb fine particulate pollutants from the atmosphere outdoors and then release them after entering room in a form similar to three-handed smoke. In this study, experimental site Zhengzhou, typical city with heavy pollution central China, was used investigate adsorption diffusion patterns of three different fabrics polyester, polyester-cotton, cotton clothing for particle pollutan...
The modification of bioresorbable polyester surfaces in order to alter their biointeractions presents an important problem in biomedical polymer science. In this study, the covalent modification of the surface of poly(lactic acid)-based (PLA-based) films with poly(acryl amide) and sodium alginate hydrogels was performed to change the non-specific polyester interaction with proteins and cells, a...
Polyester (P), cotton (C) and Polyester-Cotton (PC) blended fabrics were treated with 350gpl of phosphorous containing flame retardant (FR) chemical. Oxidative thermal degradation of these fabrics before and after the treatment was studied using Thermogravimerty (TG) Differential Thermal Analysis (DTA). From TG output, quantitative mass loss of samples was calculated at definite temperature int...
Kinetic modeling of enzymolysis of pulp fiber waste pretreated by a wet oxidation process was studied. First, a wet oxidation pretreatment of fiber waste was carried out. It was found that hemicellulose were removed efficiently, yielding material with a pentosan content of 4% (based on the o.d. biomass). A statistical kinetic model was developed based on the experimental results of the enzymati...
Issues pertaining to deforestation, environmental pollution and natural wastes are increasing day by day. These issues can be resolved introducing a new composite material, in which waste is used as fibre replacement of wood plastic composite. The different lengths (3, 6 9 cm) corn husk filled polyester composites were produced using the vacuum infusion method. Several mechanical properties the...
Abstract Polymeric dispersing agents were prepared from aliphatic polyesters consisting of δ ‐undecalactone (UDL) and β , ‐trimethyl‐ ε ‐caprolactones (TMCL) as biobased monomers, which polymerized in bulk via organocatalysts. Graft copolymers obtained by coupling the to poly(ethylene imine) (PEI) without using solvents. Various parameters that influence performance pigment‐based UV‐curable mat...
Hyperbranched polymers based on a polyether and polyester have been modified and used as macromolecular ligands for the anticancer drug cisplatin, giving controlled release of the drug over 7 days.
The short circuit current of dye sensitised solar cells increased significantly by the simple addition of polyester hydroxyl acetylene bis(hydroxymethyl)propanoic acid dendrons on TiO(2) nanoparticles, resulting in a very high overall energy conversion efficiency.
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