POLYMER TOPOLOGY STRUCTURE AND PROPERTIES RELATIONSHIP

When the Eu concentration increases above 5%, all the samples show ferromagnetic behavior. Now, there has been almost no report of room temperature ferromagnetism in Rare-Earth-doped BFO[r]

earlier, chain sliding is relatively difficult in three-dimensional (thermoset) polymers. Hence, thermosets are relatively rigid and brittle compared to thermoplastics.
Long-chain polymeric materials exhibit a transition from rigid glass- like behavior to a viscous flow behavior above a tem[r]

Polypropylene/ maleic anhydride /organic montmorillonite nanocomposites (PP/ MA/ Org-MMT) have been prepared via direct melt intercalation in an internal mixer. Maleic anhydride (MA) was used as a compatibilizer to improve the dispersability of the clay. The structures of nanocomposites have been ch[r]

INTRODUCTION The crystal structure, specific heat and magnetic properties of the equiatomic ternary compounds of RMX have been studied R = rare earth, M = transition metal and X = Si, G[r]

The paper researched the effect of mass fraction of butylacrylate/styrene in core polymer on the synthesis and properties of emulsion resins with a core-shell str[r]

In the present work, we use five different grades of Vietnam commercial NRs to investigate the relationship between structure and properties of commercial NR. First, structure characterization of the rubbers is carried out by NMR spectroscopy to indentify the changing in the chemical structure. Then[r]

The elastic constants and various optical properties of MnIn2S4 including the dielectric constant, absorption coefficient, electron energy loss function and reflectivity were calculated as a function of incident photon energy. Those results are discussed in this study and compared with available exp[r]

Fig. 7. Secondary structure and topology of IFP–wt in SDS micelles determined by NMR spectroscopy. (A) NOE interactions of IFP–wt in aqueous buffer (top) and in association with SDS micelles (bottom). (Upper) Folded structure can be discerned in the region 10–18 [r]

In this project, initially static structural analysis has been carried out on the support structure using two different materials and two fixed support conditions. The support structure was designed using the space claim with the help of the given dimensions. The materials used in the analysis are c[r]

STRUCTURE AND SYNTHESIS OF _ – _ POLYOXYMETHYLENES [136] POLYMER FORMULA SYNTHESIS Paraformaldehyde HO CH2O_n_H from aqueous formaldehyde solution [137] _n = 8 – 100_ -Polyoxymethylene H[r]

Fe content in the sample should be much higher than 25.5 wt%. However, most analytical results mentioned above, including XRD, XPS, EDX, and TEM observa- tions, support a lower content of elemental Fe than that of W in the sample. We speculate that the large magnetization of the sample might[r]

In protein design, correct use of topology is among the initial and most critical feature. Meticulous selection of backbone topology aids in drastically reducing the structure search space. With ProLego, we present a server application to explore the component aspect of protein structures and provid[r]

[6] Nguyễn Hữu Đỉnh, Trần Thị Đà, Ứng dụng một số phương pháp phổ nghiên cứu cấu trúc phân tử, Nhà xuất bản Giáo dục,1999.
[7] Lê Công Dưỡng, Vật liệu học, NXB Đại học quốc gia Hà Nội, 2003.
[8] Nguyễn Hữu Niếu, Trần Vĩnh Diệu, Hóa lý polymer, NXB Đại Học Quốc Gia TP Hồ Chí Minh, 2004.

The optical and the nanostructures of the obtained hyperbranched con- jugated polymers were characterized, and the effect of polymer aggregation on the optical properties was[r]

….. On the outside of the wool fiber there is a protective layer of scales called cuticle cells. They overlap like tiles on a roof.
…..The scales have a waxy coating chemically bound to the surface. This stops water penetrating the fiber but allows absorption of water vapor. This makes wool wat[r]

El-Ghezal Jeguirim et al. (El-Ghezal Jeguirim et al., 2009) have developed neural network and fuzzy logic based models to predict the sensory attributes, evaluated by a trained panel, of knitted fabrics from the structure and process parameters. In their further work, the int[r]

The global aim of Inorganic Chemistry is to develop basic principles concerning the structure and reactivity of chemical species in order that students can apply them in a systematic study of chemical compounds, in general, and inorganic compounds in particular. The objective is to emphasize the rel[r]

Protein secondary structure can be regarded as an information bridge that links the primary sequence and tertiary structure. Accurate 8-state secondary structure prediction can significantly give more precise and high resolution on structure-based properties analysis.

Especially, material from natural fibers and polymer matrix attracts many researches to prepare the composite having good mechanical properties, lightweight, friendly [r]