Morphology properties

Nanocomposite based on polyurethane (PU) is prepared using silica, clay, and Polyhedral Oligomeric Silsesquioxane (POSS). Preparation, characterization, mechanical and barrier properties, morphology, and effect of processing conditions have been reported on polyurethane-based nanocomposites [72,73]. 

Keywords Clay Elastomer Mechanical properties Morphology Nanocomposite Nanofiller Rubber... 

It allows the obtainment of information about topography (surface features of an object, i.e., its texture and relation among these features and the material properties), morphology (shape and size of the particles and relation among... 

To further explore the influence of silica material properties (morphology, surface area, silanol concentration, and surface treatment) on the silica flame-retardant properties, various types of silicas (silica gel, fumed silicas, and fused silica) were investigated.50 51 Material properties of the various silicas are summarized in Table 8.6. These different types of silicas were added to polypropylene and polyethylene oxide to determine their flame-retardant effectiveness and mechanisms. Polypropylene was chosen as a non-char-forming thermoplastic, and polyethylene oxide was chosen as a polar slightly char-forming thermoplastic. Flammability properties were measured in the cone calorimeter and the mass loss rate was measured in the radiative gasification device in nitrogen to exclude any gas phase oxidation reactions. 

The application of spectral and spectroelectrochemical tools for the study of electrochemical systems, in general, and nonaqueous electrochemical systems, in particular, is very important. These measurements result in a better understanding of reaction mechanisms, surface phenomena, and the correlation among surface chemistry, interfacial electrical properties, morphology, three-dimensional structure, and electrochemical behavior. In view of this, Chapter 5 is devoted to the use of spectroscopic methods, especially in situ methods, for the study of nonaqueous electrochemical systems. 

By the time the clinical program has entered phase 3, the sponsor should provide a full description of the physical, chemical, and biological characteristics of the drug substance. For example, most of the following should be evaluated and submitted solubility and partition coefficient, pKa, hygroscopicity, crystal properties/morphology, thermal evaluation, X-ray diffraction, particle size, melting point, and specific rotation stereochemical consideration. Proof... 

The synthesized products were obtained as colloidal solutions. Optical properties, morphology and composition of the nanoparticles were investigated by means of optical absorption spectroscopy, transmission electron microscopy (TEM) and X-ray diffraction (XRD) analysis. 

For industrial applications, the particle size, morphology, and texture of the mesoporous material are important, which include several critical points such as mechanical stability and macroscopic shapes with well defined properties. Morphology control is one of the most interesting issues in the research field of mesoporous materials. It plays a very important role in understanding the basic synthesis mechanism. 

PA-6 (90) / EPDM-g-MA (10) or EP-g-MA or PE-g-MA SSE / selective solvent extraction / mechanical properties / morphology / dilatometry tests / also used unfunct ionaUzed. poly(etherester) TPE Borggreve et al., 1989 a, b... 

E-GMA (2-9) solvent extraction / FTIR / rheology / mechanical properties / morphology vs. order of mixing 1994... 

Vectra A900 PET Mechanical Properties, Morphology Chin and Chang, 1997... 

Since all TPO materials are crystallizable, the final crystalline morphology and crystallinity ultimately affect the elastomeric properties. In this chapter, we aim to discuss the basic relationships among mechanical properties, morphology and stmc-tures of TPO, TPV, and copolymers of propylene and ethylene. 

The miscibility of olefin copolymers such as ethylene-a-olefin copolymers was found to be controlled by the structural composition and the primary strucmre of the copolymers. Using these copolymers, binary blends with various compatibilities were prepared and the effects of compatibihty on mechanical properties in the binary blends were investigated. The tensile properties in binary blends of iPP with rubbery olefin copolymers are considerably influenced by the miscibility between iPP and the copolymers. The miscibility of iPP with other polyolefins is described in detail based on the dynamic mechanical properties, morphology observation, and solidification process. It is found that EBR, EHR, and EOR having more than 50 mol% of a-olefin are miscible with iPP in the molten state. In the solid state, the miscible copolymers are dissolved in the amorphous region of iPP, although the copolymers are excluded from crystalhne lattice of iPP. The isotactic propylene sequence in the EP copolymers with a propylene-unit content of more than 84 mol% participates in the crystallization process of iPP, resulting that a part of the EP copolymers is included in the crystalline lattice of iPP. 

The effect of ultrasonic irradiation on the mechanical property, morphology, and crystal structure of PP/EPDM blends were examined by Chen and Li (16). Appropriate ultrasonic intensity can increase the toughness of PP/EPDM blends noticeably. SEM showed that with ultrasonic irradiation, the morphology of a well-dispersed EPDM phase is formed in the PP/EPDM blend. Ultrasonic irradiation interestingly... 

A variety of test methods are used to characterise drug-releasing textiles however, the main characteristics that are commonly determined are mechanical properties, morphology, degradation, chemical functionality, and of course drug-loading capacity and release kinetics. 

A comparison of PANI-NTs synthesized by electrochemical and chemical methods inside the nanopores of AAO membrane and PC track-etched membrane was made [48]. The morphologies of PANI-NTs synthesized electrochemically in AAO membrane were found to be better than those synthesized in PC track-etched membrane. EPR spectra revealed that the degree of delocalization of those nanotubes synthesized electrochemically in the AAO membranes was better. Nanotubes synthesized electrochemically inside the pores of AAO membranes showed an enhancement of the electronic conductivity compared to PANI bulk materials. PANI-NTs synthesized by an electrochemical method showed better properties (morphology, degree of delocalization and conductivity) than the tubes synthesized by a chemical method in the same templates. 

Tsuji, H. and Horikawa, G. (2007) Porous biodegradable polyester blends of poly(L-lactic acid) and poly(s-caprolactone) physical properties, morphology, and biodegradation. Polymer International, 56, 258-266. 

Chang, J.-H., An, Y.U. and Sur, G.S. (2002) Poly(lactic acid) nanocomposites with various otganoclays. I. Thermomechanical properties, morphology, and gas petmeability. Jourrtal of Polymer Scierwe Part B Polymer Physics, 41,94-103. 

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