Interacting Blends of Novel Acrylated Poly(Ester-Amide) Resins - I with Methyl Methacrylate Monomer—Part 1
Bisphthalamic acids were prepared by reaction of phthalic anhydride and aliphatic diamines. Novel poly(ester-amide)s (PEAs) were prepared by reaction of epoxy resin with bisphthalamic acids. Acrylation of PEAs were carried out using acryloyl chloride; products are called acrylated poly(ester-amide)s (APEAs). Elemental analysis, Number average molecular weight and IR spectra recorded for both PEAs and APEAs. Blending of APEAs was carried out with methyl methacrylate monomer. Curing of APEAs-MMA blends were monitored on differential scanning calorimeter. Composites of these blends have been laminated and characterized. Unreinforced cured samples of these blends were analyzed thermogravimetrically.
Quantitative Organic Analysis
Quantitative Organic Analysis via Functional GroupsBy Dr. Sidney Siggia. Third edition. Pp. xii + 697. (New York and London: John Wiley and Sons, Inc., 1963.) 145s.
Light‐scattering studies of crosslinking unsaturated polyesters with methyl acrylate
The Debye-Bueche theory of light scattering of inhomogeneous solids was applied to a three-dimensional crosslinking process. A series of unsaturated polyesters of an average degree of polymerization of 7.4 were prepared in which the double bond spacings were varied. These polyesters were crosslinked with methyl acrylate in 1 : 2, 1 : 3, and 1 : 4 polyester double bond: monomer ratios. The crosslinking process was followed up with measurements of the light-scattering envelope beyond the gel point. Parameters corresponding to the extent of inhomogeneities and the mean square deviation of the local refractive index from the average were evaluated. The data were interpreted by proposing a gelation mechanism which can be separated into three phases by optical means.