Polymerization fabrication after

Integration/fabrication after polymerization Solution processable CEPs Melt-processable CEPs... 

Polymeric dispersant and protective colloid for yarn and fabric preparation and bleaching. Minimises scale build-up on hot metal surfaces and fabric. Extremely efficient dispersant for cotton linters and particulate soil. Provides a cleaner fabric after washing-off without drainage marks. Improves absorbency and dyeing properties. 

Example 2. Acrylonitrile-butadiene rubber (5 wt.%) is dissolved in a mixture of chloromethylstyrene (82 wt.%) and divinylbenzene (10 wt.%) (mixture of o- and p-divinylbenzene). After benzoyl peroxide (3 wt.%) is dissolved in the mixture, the obtained pasty mixture is coated on a woven-cloth fabric made of poly(vinyl chloride) and polymerized at 80 °C for 16 h under nitrogen atmosphere, covered with a polyester film and then pressed with steel plates on both sides. After polymerization, the obtained membranous copolymer is immersed in trimethylamine (1 mol) mixed with acetone (25 wt.%) and water (75 wt.%) solution for 24 h at 30 °C to react with the chloromethyl groups of the membrane.37... 

Total impregnation. The infusion of consolidant becomes necessary when the original fabric is degraded to the point of being dissociated to an amorphic substance. While acrylic and vinyl resins are preferable for their solvency after polymerization, cross-linking epoxides and polyesters may be necessary for their cohesive and gap-filling properties. 

Hollow microsphere (diameter 360-1200 nm) of PANI-NSA has been fabricated using an emulsion template method at low temperature [284]. In this template method, the target material is precipitated or polymerized on the surface of the template, which results in a core-shell structure. On removing the template, hollow microsphere can be obtained. However, the removal of the template often affects the spherical structure, especially for hollow polymer microsphere. Therefore, they select the emulsion template method as the emulsion can be readily removed through dissolution or evaporation after polymerization. 

Huisman et al. studied the LC behavior of semiconducting oligothiophenes 2.53 (n = 4-8) (Chart 1.12), which were substituted by polymerizable acrylate groups [119]. By using these materials for the fabrication of OFETs, it was observed that the use of polymer films resulted in a decrease in mobility by a factor of 10 compared with transistors made from the bisacrylate monomer. For example, the charge carrier mobility of 2.53 (n = 6) after polymerization was 6 x 10 " cm V s compared with 4 x 10 cm V s before... 

G. G. Roberts and coworkers deposited monolayers of diyne fatty adds on the surface of the narrow band gap semiconductor Hg Cdj Te, utilized in the fabrication of infrared detection devices. Admittance data determined after polymerization of the amphiphiles compared favourably with data obtained for equivalent devices with inorganic insulators. Hence, an application for passivating semiconductor surfaces seems feasible. 

Three classes of molecules are found to be valuable for practical use here diazonium salts, onium salts and organometallic complexes, about which detailed discussion have been pubUshed [4, 105]. Compared to radical type reactions, cationic polymerizations feature (i) low curing speed, (ii) lower viscosity, (iii) small shrinkage after polymerization, and (iv) severe post-irradiation dark polymerization. Sometimes extra thermal processing is needed to increase the conversion of monomers [106]. The above general information is instructive for choosing a suitable material system for laser fabrication. 

THPC—Amide Process. The THPC—amide process is the first practical process based on THPC. It consists of a combination of THPC, TMM, and urea. In this process, there is the potential of polymer formation by THPC, melamine, and urea. There may also be some limited cross-linking between cellulose and the TMM system. The formulation also includes triethanolamine [102-71-6J, an acid scavenger, which slows polymerization at room temperature. Urea and triethanolamine react with the hydrochloric acid produced in the polymerization reaction, thus preventing acid damage to the fabric. This finish with suitable add-on passes the standard vertical flame test after repeated laundering (80). 

In the paste coating method, a PVC paste, which contains emulsion-polymerized PVC and additives, is appHed onto a substrate and heated to gelation before fusion to produce a coating layer. This method is employed for products with a thin layer, ie, of 0.007—0.05 mm thickness. For foamed vinyl-coated fabrics, a substrate is laminated onto a transfer paper on which a PVC paste containing a foam-blowing agent has been appHed and geUed. After removal of the transfer paper, the paste is blown. 

After apphcation to the fabric, the compounds are polymerized by reaction with gaseous ammonia (11,12), then oxidized to phosphine oxides by reaction with hydrogen peroxide. The stmcture of the polymer is shown (13). 

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