Glass transition temperatures formation affected

The glass transition temperature (T ) affects adhesion, flaking, and peeling from the substrate, crack formation, and resistance to impact shock [2.44]. In acrylates adjustment of is achieved relatively easily e.g. via the ratio of methyl methacrylate... 

Formation of solubilized surfactant-latex complexes can influence the properties and performance of vinyl acrylic latexes prepared with NaLS and other penetrating type anionic surfactants. Such complexes seem to affect glass transition temperature and film coalescence process (12). 

The monomer composition must be chosen carefully as it will affect the properties of the final coating and the film-forming ability of the latex. The minimum film-forming temperature (MEET) is defined as the lowest temperature at which the latex particles will coalesce to give a clear film. It is related to the glass transition temperature (Tg) of the polymer but is also influenced by the presence of other materials such as coalescing solvents, plasticizers, and surfactants. In order that the latex particles can coalesce and form a continuous film on application, the MEET must be below the temperature at which film formation will occur. For domestic paints an MEET of below 10°C is required. 

The copolymer composition of the latex is critical since it affects the physical and chemical properties of the end-use product, especially the glass transition temperature (Tg). By varying the copolymer composition (and as a result the glass transition temperature), the film formation ability, tackiness, and film strength of the copolymer may be controlled and tailored to meet certain specifications. The glass... 

The three ion-dipole complexes or solvates most likely determine the thermal and ionic conductivity behavior of the polyblend solid electrolytes the mixed solvate II may be considered mobile and contribute to the overall ionic conductivity and is present in the interphase between two pure phases. The mixed solvates do not affect the thermal behavior of the pure PEO phase. Homosolvate I contributes to the overall ionic conductivity and also to the thermal behavior of PEO phases. High concentrations of homosolvate I result in the formation of a pseudo-cross-linked PEO phase and an increase in the glass transition temperature. Most likely only small concentrations of homosolvate III are present in the blends [36]. Overall, it is the equilibrium among these solvates that determines the thermal and ionic conductivity behavior of the polyblend solid electrolytes. 

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