preparation of poly propylene panel

Preparation and Properties of Enzyme-Immobilized Porous ...1 Apr 1998 ... The possibility of an enzyme-immobilized membrane using invertase-entrapped polyolefin porous films such as porous polypropylene films with plasma-induced graft ization is discussed. Even though plasma-induced graft ization on the membrane surface is a very rough method, we performed it without losing the enzyme activity. This simple method will significantly aid in applications for engineering use of enzyme-immobilized membranes. Previous ...【Get Price】

Polypyrrolepolypropylene composite films: preparation and ...polypyrrolepolypropylene conducting composite films with good mechanical properties and high electrical【Get Price】

Preparation of a New Radiolabeled Biomaterial and Its ...Biomaterials have attracted more attention from biomedical research in recent years. Yet there are still unmet demands for current biomaterials, such as the reduction of local inflammation of the implantation site. poly-propylene Carbonate (PPC), a with ester bonds on CO2 backbone, degrades to CO2 and water, which are natural components of human body, yielding less inflammatory response than traditional biomaterials. However, the tensile strength and heat resistance ...【Get Price】

Preparation of some thermal stable s based on diesters of ...Based on polyethylene (PE) and polypropylene (PP) oxides, six macromonomers were prepared through two steps. The first step was esterification of the PE and PP oxides, with oleic acid to give the corresponding monoesters. The second was the diesterfication of the prepared monoesters with methacrylic acid to give the corresponding diesters. The prepared macromonomers (diesters) were ized to obtain six s. The chemical structure of the prepared mono- and ...【Get Price】

Preparation and properties of self-reinforced polypropylene/liquid ...The mechanical properties of self-reinforced liquid crystalline /polypropylene (LCP/PP) blends strongly depend on the viscosity ratio of the blend components in the melt. This ratio was determined for PP blends with different commercial LCPs (Vectra A950 and Vectra B950), by means of capillary rheometry, under conditions representative for the blending process during extrusion. It was found that optimal mechanical properties were achieved when the LCP/PP viscosity ratio ...【Get Price】

Preparation and characterization of electrically conductive ...polypropylene particles 35 m in diameter were chemically coated with polypyrrole. The content of polypyrrole varied from 1.1 to 10.4 wt%. polypropylene/polypyrrole (PP/PPy) composite films about 0.2 mm thick were prepared by compression moulding of modified powders. The electrical conductivity of compression moulded samples depends on the concentration of polypyrrole, and reached values from 4 × 10<sup>10</sup> to 5 × 10<sup>3</sup> S cm<sup>1</sup>, which is about seven orders of magnitude&nbsp;...【Get Price】

Preparation and water sorption properties of cellulose ...A series of cellulose-polypropylene glycol block co s have been prepared by techniques described previously. The chain extension reactions used for their preparation were confirmed by i.r. and intrinsic viscosity data. The water sorption of films of the blocks was determined and the results, calculated on the cellulose content, compared with various forms of pure cellulose. It was found that lower crystallinity of the blocks was indicated by the higher water sorption values. As the&nbsp;...【Get Price】

Preparation of poly (propylene carbonate)/organophilic rectorite ...The completely degradable nanocomposites comprised of poly(propylene carbonate)(PPC) and organo-modified rectorite (OREC) were prepared by direct melt intercalation. The structure and mechanical properties of PPC/OREC nanocomposites were investigated. The wide-angle X-ray diffraction (WAXD) results show that the galleries distance of OREC is increased after PPC and OREC melt intercalation, which indicates that PPC molecular chain has intercalated into the layers of&nbsp;...【Get Price】

Preparation and Performance of Continuous Glass Fiber Reinforced ...preparation and Performance of Continuous. Glass Fiber Reinforced polypropylene. Composite Honeycomb Sandwich panels. Ke CHENa, Ping XUEb, Xiang ZHOUc and Mingyin JIAd,*. Institute of Plastic Machinery and Engineering, Beijing University of Chemical Technology, Beijing. 100029, China [email protected], [email protected], [email protected], [email protected] Abstract. As the light-weight and high-strength thermoplastic&nbsp;...【Get Price】

Facile synthesis of polypropylene composites by filling with modified ...Based on the analysis of the properties of vanadium tailing (VT), surface modification of VT with three kinds of coupling agent was carried out and the application technology as filler in polypropylene (PP) composites was developed. The results shown that the surface of VT was rough and contained much Si-OH. It is beneficial for VT to react with coupling agent. DL-411 coupling agent was more suitable for VT modification, which can improve the activity index observably. The tensile&nbsp;...【Get Price】

Preparation and characterization of polypropylene/silica composite ...A novel interpenetrating structural ultrafine polypropylene-silica nanocomposite particles were synthesized by a modified solgel approach in the presence of the melt polypropylene emulsion. A series of samples with different polypropylene content was prepared to investigate the unique characteristics of this original nanocomposite. The thermal gravimetric analysis and differential scanning calorimetry results showed that the nanocomposites had the interpenetrating structure and&nbsp;...【Get Price】

Preparation and characterization of polypropylene and waste tire ...17 Nov 2008 ... Abstract. Waste tire powder subjected to allylamine modification in the presence of ultraviolet (UV) radiation has been used to prepare polypropylene based thermoplastic vulcanizates with maleic anhydride polypropylene (MA-PP) as compatibilizer. The effect of increasing the concentration of MA-PP on performance characteristics like tensile strength, elongation and rheological properties have been investigated. X-ray diffraction studies of the PP/waste tire powder&nbsp;...【Get Price】

Preparation and Performance of Continuous Glass Fiber Reinforced ...29 Jul 2016 ... As the light-weight and high-strength thermoplastic composites, novel honeycomb sandwich panels were discussed in this paper: continuous glass fiber reinforced polypropylene (GF/PP) laminated sheets were used as the surface and polypropylene (PP) honeycomb was used as the core. The effects of honeycomb core's height, thickness and aperture on the mechanical properties were analyzed in this paper. The composite honeycomb sandwich panels exhibited&nbsp;...【Get Price】

Environmental and Cost Assessment of a Polypropylene ...19 Aug 2007 ... glass fiber-reinforced polypropylene as automotive panels. In all three cases, the use of the PP ... À36.5% for agricultural film, and. À1.25% for automotive panels. It goes without saying that a product's impact on the environment will decrease when less material is used. The production and incorporation of nanoparticles, however, may have additional impacts. We ..... preparation of polypropylene, the mix/dilution step, the use phase, and the waste treatment phase.【Get Price】

Researches on preparation and properties of polypropylene ...polypropylene composite nonwovens containing rare-earth strontium aluminates SrAl2O4:Eu<sup>2+</sup>,Dy<sup>3+</sup> and functional additives were fabricated by the spun-bonded technique. The optical properties, morphology and mechanical properties of the samples were characterized. Results from scanning electron microscopy photographs (SEM) indicated that the surface of the fiber was destroyed by the addition of rare earth luminescent materials lightly but the thickness of the fiber was&nbsp;...【Get Price】