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Mostrando ítems 11-20 de 2078
Liquid-Glassy Polymer Interphases: Diffusion Kinetics in Conditions of Unlimited Liquid Supply
(Wiley VCH Verlag, 2009-03)
We investigate evidences of diffusion controlled by mechanical relaxation of the glassy matrix, i.e. Case-II mechanism, in a series of liquid/glassy interphases formed by polystyrene (PS) and poly (phenylene oxide) (PPO) ...
Kinetic expression for the isothermal crystallization of poly(3‐hydroxybutyrate)–11%poly(3‐hydroxyvalerate)
(John Wiley & Sons Inc, 2004-11)
The use of polyhydroxyalkanoates as a biodegradable semicrystalline polymer is currently increasing. The prediction of crystallinity profiles produced in part with this polymer requires the knowledge of the kinetic expression. ...
Thermal stability of aromatic poly(monoitaconates)
(GORDON BREACH SCI PUBL LTD, 1996)
Thermogravimetric analysis of poly(mono-benzyl itaconate), (PMBzI) poly(mono-ethylphenyl itaconate) (PMEPI) and poly(mono-n-propyl itaconate) (PMPPI), were performed by dynamic thermogravimetry. The thermal stability of ...
Kinetics and binding properties of cloramphenicol imprinted polymers
(Elsevier Science, 2007-04)
Molecularly imprinted polymers (MIPs) are easily obtained by a non-covalent approach through the copolymerisation of suitable functional monomers and cross-linkers in the presence of the print molecule. Removal of the ...
Kinetic behavior of irradiated polyacrylonitrile fiber
(Sao Paulo: ABRATEC, 2010, 2014)
Kinetic model of poly(3-hydroxybutyrate) thermal degradation from experimental non-isothermal data
(Springer, 2009-04-01)
The non-isothermal data given by TG curves for poly(3-hydroxybutyrate) (PHB) were studied in order to obtain a consistent kinetic model that better represents the PHB thermal decomposition. Thus, data obtained from the ...
Kinetic model of poly(3-hydroxybutyrate) thermal degradation from experimental non-isothermal data
(Springer, 2009-04-01)
The non-isothermal data given by TG curves for poly(3-hydroxybutyrate) (PHB) were studied in order to obtain a consistent kinetic model that better represents the PHB thermal decomposition. Thus, data obtained from the ...
Poly(ethylene oxide) x polyacrylamide. Which one is more efficient to promote drag reduction in aqueous solution and less degradable?
(John Wiley & Sons IncHobokenEUA, 2008)
Development and in vitro evaluation of coated pellets containing chitosan to potential colonic drug delivery
(2013-01-02)
In this work pellets containing chitosan for colonic drug delivery were developed. The influence of the polysaccharide in the pellets was evaluated by swelling, drug dissolution and intestinal permeation studies. Drug-loaded ...
Development and in vitro evaluation of coated pellets containing chitosan to potential colonic drug delivery
(2013-01-02)
In this work pellets containing chitosan for colonic drug delivery were developed. The influence of the polysaccharide in the pellets was evaluated by swelling, drug dissolution and intestinal permeation studies. Drug-loaded ...