Polyacrylates individual polymers

Figure 26 shows an analysis of the area ratios for the core and 02j levels which are also essentially core like (cf. Fig. 15). For polyacrylic acid the measured areas for the various structural features for the 0ls levels and Cts levels and the overall ratios for the Cis to 0ls levels (corrected for differing sensitivity factors) are 1.0, 2.0 and 1.6 respectively, in excellent agreement with the theoretical values of 1.0, 2.0 and 1.5 based on a statistical sampling of the polymer repeat unit. The area ratios for the individual components for the Cu levels show an excellent correlation with the number of carbon atoms in the alkyl groupsb. (Slope Experimental 0.99, Theoreti-...

Vaginal films are produced with polymers such as polyacrylates, polyethylene glycol, polyvinyl alcohol, and cellulose derivatives. Proper combination of these polymer is essential to achieve adequate mucoadhesion and optimal drug release profiles. Vaginal films can be produced by casting [132], in which polymer solutions containing the active substance(s) are poured into adequate molds and dried until a thin, solid, and flexible polymeric sheet is formed. Afterward, the sheet is cut in small pieces (individual films) and peeled off. 

Water-Soluble Binders. Water-soluble binders consist of relatively low molecular mass polymers (M < 10000) (e.g., alkyds, polyesters, polyacrylates, epoxides, and epoxy esters) whose individual molecules dissolve in water due to salt formation involving functional anionic or cationic groups. 

The T of the H-H polyacrylates were measured by DSC, (Table 5), by the determination of the thermal mechanical spectrum and by dynamic mechanical measurements. In general, the T of the polyacrylates increased with increasing bulkiness of the substituent the H-H polymers have higher T than the H-T polymers the individual values ranged from 27° to about 40°C. higher for the H-H polymer than for the H-T polymers. Small differences have been noted between the measurements of the T by DSC as compared to TMS. ... 

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