Polymer-Poly -cast

The solubility is generally improved by the introduction of fluorine atoms into aromatic condensation polymers. Poly(carbonate)s containing hexafluoroisopropylidene units are much more soluble than Bisphenol A poly(carbonate) (3). All of the hexafluoroisopropylidene-unit-containing poly(carbonate)s become soluble in acetone, ethyl acetate, chloroform, and dimethyl sulfoxide (DMSO) in addition to the solvents of Bisphenol A poly(carbonate) (3). Colorless, transparent, and flexible films are prepared from hexafluoroisopropylidene-unit-containing poly(carbonate)s by casting or pressing. 

The protocol outlined by the American Society for Testing Materials (ASTM) was followed for the solid surface growth studies. A film of the polymer was cast on the surface of a BMS-agar plate by spreading 2.0 ml of 10 mg/ml poly(ester-urethane) in THF over the surface of the plate and evaporating the THF. The centers of the plates were inoculated with 0.1 ml of the spore suspensions or 0.1 ml of a turbid culture of yeast grown on 0.2% (w/v) Casamino Acids (Difco, Detroit, Ml), after which the plates were incubated at 25 C for one month. 

A thiophene based polymer poly(2,5-thienylenevinylene) (PTV, 43b) has been synthesized using the precursor method.[242] The dimethylformamide solution of the PTV precursor polymer was spun-cast and then heated to 200°C for 5 min under a nitrogen stream containing a small amount of HCl gas. During the heat treatment, HCl effectively acts as a catalyst for the conversion of the precursor polymer to the PTV.[243] Mobilities as high as 0.22 cm V s were reported. The same polymer has been used for fabrication of integrated circuits, [244] with reported mobilities of... 

Dynamic mechanical results for poly(Y-benzyl-L-glutamate) have been reported by three groups of investigators (15, 59, 74) working in the 0.1- to 110-c.p.s. frequency region. In one study samples of the same polymer were cast from an a-helix-forming solvent (dioxane) and a random-coil... 

Due to the important role of adhesion of plasma proteins in determining blood compatibility and the key role of fibrinogen in these processes, investigators developed an in vitro assay to test fibrinogen adsorption to polymer surfaces. Casting of 46 different polymers (44 polyarylates, poly(lactic... 

Figure 7.6 shows the electronic spectra of poly(52-3). While this showed one peak due to the Amax In an aqueous solution of the salt form, a film cast from an acid form solution indicated that the polymer was in a well doped-state. Since chlorine anions, sodium cations and iron cations were completely removed from the solution, self-doping took place in the polymer. Poly(52-3) had an of about 1 x 10, which was sufficient for a flexible free-standing film to be cast. Cast films were deep greenish-brown and had a conductivity of 0.1 Scm without adding any external dopants. Cyclic voltammometry... 

Shaohua et al. used short electrospun fibers for the first time for the preparation of homogeneous polymer nanoflber/polymer composites, improving the mechanical properties by an order of magnitude comparative with electrospun long and continuous nanoflbers (Shaohua et al. 2013). Thus, the formation of electrospun flber nonwovens was carried out by dispersion casting of short electrospun polyimide (PI) nanoflbers and the preparation of homogeneous polymer/poly mer nanoflber composite films. The self-reinforced Pl/PI-short nanoflber composite Aims were obtained from... 

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