Thermal gel

Thermal gelation, 13 73 Thermal gel stabilization, 23 71 Thermal generation, of Ag+ intermediate complexes, 19 355... 

Sanchez, C., Pouloit, M., Renard, D., and Paquin, P. (1999). Uniaxial compression of thermal gels based on microfluidized blends of WPl and heat-denatured WPl. /. Agric. Food Chem. 47,1162-1167. 

HEC is available in a wide range of viscosities (from 10 to 100,000 mPa s (=cP) in 2% aqueous solution at ambient temperature). It is soluble in cold and hot water or some mixtures of water and water-miscible organic solvents. The nonionic chemical structure and its solubility in both cold and hot water are the main advantages for the utilization of HEC. HPC has a thermal gel point like MC and it is thermoplastic. Because of its high level of substitution (molar substitution about 4) and its remarkable hydrophobic character it is soluble in a number of organic solvents as well as water. 

Ritfeld GJ, Rauck BM, Novosat TL, Park D, Patel P, Roos RA, et al. The effect of a polyurethane-based reverse thermal gel on bone marrow stromal cell transplant survival and spinal cord repair. Biomaterials February 2014 35(6) 1924-31. 

D. Park, W. Wu, Y. Wang, A functionalizable reverse thermal gel based on a pol5nirethane/ PEG block copolymer, Biomateiials 32 (2011) 777-786. 

Generally speaking, the material parameters in Equation (4.1) and Equation (4.2) are functions of the physical variables of the material (e.g. temperature, strain itself, etc.) as well as of the chemical ones (e.g. pH, ionic strength and type of solvent). Because the dependence of the material parameters on the mechanical deformation is weak, p, k and f can be assumed constants in the thermal gel readjustment, where the temperamre is held constant for t > 0. Moreover, since the temperamre change can be approximately assumed uniform over the sample, the thermal stress (a) is only a function of time. 

The controlled dehvery of drugs from a liquid formulation that thermally gels at body temperature has been described for improved suppositories and long-lasting single-dose injectables [8,9]. Other workers have taken advantage... 

Uses Thickener, stabilizer, emulsifier, adhesive, and gellant In foods, pharmaceuticals provides moist texture In reduced-fat cakes provides firm thermal gel structure to structured meat, veg., and poultry prods. 

For constraction products, cellulose ethers act as thickeners, binders, film formers, and water-retention agents. They also function as suspension aids, surfactants, lubricants, protective colloids, and emulsifiers. In addition, aqueous solutions of certain cellulose ethers thermally gel, a unique property that plays a key role in a variety of applications. 

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