Blends of polypropylene with poly(cis‐butadiene) rubber. III. Study on the phase structure and morphology of incompatible blends of polypropylene with poly(cis‐butadiene) rubber

Abstract

Scanning electron microscopy (SEM) was used to study the structure and morphology of partly compatible binary blends of polypropylene with poly(cis-butadiene) rubber. The SEM images were transformed by digital image process software designed by our group, and binarized images were obtained. The size (mean diameters d p and characteristic lengths L) of phases was calculated using binarized images. Small-angle light scattering was employed to study the structure and morphology of phases in the blends. The structural parameters, including correlation distance a c , average chord lengths l, and mean diameter D S to describe the structure and morphology of phases in binary blends, were calculated based on the corresponding theory. The variation of correlation distance a c , average chord length l, and mean diameter D S were the same as that of mean diameters d p and characteristic length L. At the same time, the distribution of sizes of the dispersed phase in binary blends was calculated with graph transition technique, which possessed log-normal distribution characterization. The power spectrum images corresponding to small-angle light scattering images were obtained by twodimensional fourier transformation of binary images. The correlation distances a cf and average chord length l f have been calculated by intensity of power spectrum images and that was the same as a c and l.

Effect of Spin Speed and Solution Concentration on the Directed Assembly of Polymer Blends

“…The phase-separated morphology of a polymer blend in a thin film can be described by a characteristic value of the most predominant length, e.g., characteristic length, which is usually found by fast Fourier transformation (FFT) analysis. The characteristic length of a polymer blend represents the predominant length of vectors, which are randomly drawn passing through the two phases. − The characteristic length is related to the length or size of the phase domains. It represents the repeat length from domain to domain of one of the species or the size of domains for both species.…”

Fractal analysis of morphology of PE/PA blends: Composition

“…Sailer and Handge7 studied the morphology of PA6/SAN with rheological behavior. Using a mixer, Sheng and coworkers8–11 investigated the phase morphology in the initial stage of the blending process and found SALS was an effective method to blend. Plivelic et al12 investigated the morphology of PCL/PECL by DSC, simultaneous SAXS/WAXD, and elemental mapping by ESI‐TEM.…”