Preparation and investigation of the β‐nucleated polypropylene/polystyrene blends

Abstract

In this work, b-polypropylene/polystyrene (b-PP/PS) blends were prepared with PP, PS, and a novel supported b-nucleating agent or b-nucleated PP and PS. The b-PP/PS blends were compatabilized by PP-g-MA, PP-g-GMA, POE-g-MA, and EVA-g-MA, respectively. For exploring the effect of PS amount and compatibilizers on the b-nucleation of PP, crystallization behavior and melting characteristics, the b-crystal content and crystal morphology of b-PP are characterized by differential scanning calorimetry (DSC), wide angle X-ray diffraction (WAXD), and polarized light microscopy (POM). The results indicated that the PP with high content of b-crystal was obtained by addition of CaCO 3 supported b-nucleating agent (b-NA) into PP. The b-nucleation, crystallization behavior, and melting characteristics, and the b-crystal content of b-PP in these blends were not influenced by addition of PS and its amount. However, the increased content of PS decreased the size of b-spherulites of PP in these blends. The b-nucleation of PP in compatabilized blends slightly depended on the compatibilizers. b-PP/PS blends with high b-crystal content can easily be prepared.

The effect of compatibilizers and organically modified nanoclay on the morphology and performance properties of poly(acrylonitrile–butadiene–styrene)/polypropylene blends

“…This is more obvious from Table , where the β‐iPP content of ABS/PP blends calculated by XRD spectra according to the Turner–Jones equation ( Eq . ) is presented. where H α (110), H α (040), and H α (130) are the intensities of α‐diffraction peaks corresponding to angles 2 θ equals 14.2°, 17°, and 18.8°, respectively, and H β (300) is the intensity of β‐diffraction peak at 2 θ = 16.2°.…”

“…This is more obvious from Table 2, where the b-iPP content of ABS/PP blends calculated by XRD spectra according to the Turner-Jones equation (Eq. 1) [26,27] is presented.…”

Impact of hybrid nanofillers on the structure and property of polypropylene/polystyrene composites based on elongation flow

“…In a general way, according to the structural characteristics, various nanofillers can be divided into three kinds: the zero‐dimensional nanofiller, the one‐dimensional nanofiller, and the two‐dimensional nanofiller. The zero‐dimensional nanofiller with large specific surface area, such as titanium dioxide, 21 calcium carbonate 25 and silica, 22 are usually used to fill the PP/PS blends to reinforce the polymer blend matrix. One‐dimensional nanofiller with superior aspect ratio, such as carbon nanotube, 1 carbon fiber, 26 and bamboo fiber, 24 are usually used to fill the PP/PS blends to improve the comprehensive properties.…”