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San Gil 3 (1)Institute of Macromolecules, Federal University of Rio de Janeiro, Rio de Janeiro, Brasil (2)COPPE, Federal University of Rio de Janeiro, Rio de Janeiro, Brasil (3)Department of Organic Chemistry, Federal University of Rio de Janeiro, Rio de Janeiro, Brasil Keywords: Carbon-13, solid state NMR, polypropylene, clay, nanocomposite Abstract.
The addition of modified clay do polypropylene did not cause any change in the amorphous structure of PP, because in the 13 C MAS NMR spectra no change in the chemical shift for the nanocomposites was found compared to PP itself.
Part A: Polym.Chemistry Vol. 31 (1993) pp. 2943-2498
Part A: Polym.Chemistry Vol. 33 (1995) pp. 1047-1057.

Preparation BiTaO4 by Precipitation Method and Its Visible-light Photocatalytic Activity Jingjiao Zhanga, Peisong Tangb Department of Chemistry, Huzhou Teachers College, Huzhou 313000, P.R.
The new type semiconductor BiTaO4 with ABO4 structure has a theoretical band gap of 2.75 to 2.86 eV, and has a broad application prospect in visible-light potocatalysis[4-6].
Guru Row: Journal of Solid State Chemistry, Vol. 179 (2006), p. 3919 [5] G.K.
Zhu: Journal of Physical Chemistry C.

Nanostructured morphology of adsorption of polyelectrolyte at the solid/liquid interface observed by atomic force microscopy Hongying Xia1, a, and Feng Zhao1,b 1 Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science &Technology Normal University, Fenglin Street Nanchang, Jiangxi 330013, China.
Introduction The structure and morphology of polymers at solid-liquid interface is of recent interest [1-3].
Experimental Materials Poly(styrenesulfonate) sodium salt ( PSS, M = 70 000g/mol) was obtained form Aldrich Chemical Co. polyvinylpyrrolidone (PVP, M = 45 000g/mol) was purposed form Beijing Chemistry Factory.
Meanwhile, few globular structures can be observed.
To prove that observed structure represent single PSS molecules, we evaluated an experimental average volume and contour length of the structure based on molecular mass of PSS.

Fourier Transform Infrared (FTIR) analysis was employed to gain insights into the molecular composition, revealing the emergence of new bonds within the NADES structure.
Fourmentin, Basics and properties of deep eutectic solvents: a review, Environmental chemistry letters, 19 (2021) 3397-3408
Hashmi, A novel potassium chloride based natural deep eutectic solvent: in-house synthesis and characterization, Moroccan Journal of Chemistry, 11 (2023) 871-883
Boiteux et al., NADES blend for bioactive coating design as a sustainable strategy for postharvest control, Food Chemistry, 406 (2023) 135054
Cecone et al., Sustainable synthesis of cyclodextrin-based polymers by exploiting natural deep eutectic solvents, Green chemistry, 22 (2020) 5806-5814

Characterization of Indium Oxide Nanoparticles Prepared by Soft Chemistry Route E.
One of the most used soft-chemistry techniques for the synthesis of nanostructures is the precipitation of a soluble salt followed by thermal decomposition of the intermediate material to oxide.
All these patterns may be indexed as cubic bixbyite-type structure (space group Ia3) characteristic of indium oxide.

Transforming this waste into usable activated carbon can be a good idea for recycling, sustainable and green chemistry.
Besides that, its were used in many industrial sectors including for medical treatment, energy storage, water purification and in the military field owing to their large surface area, pore structure, thermostability and low acid or base reactivity [2].
A negative trend of surface area at 70% and 80% H3PO4 acid concentration respectively may be attributed to the damage or collapsed of the morphological structure.
This study is almost similar and in agreement to those by Girgis [9] which shows the collapsed of the structure From this study it was also found that the washing process on the activated carbons produced play important role for the porosity production.
Acknowledgment The authors acknowledge Chemistry Department, University Teknologi Malaysia and King Saud University, Saudi Arabia for this work and the Ministry of Science, Technology and Innovation (MOSTI) for the financial support through the Fundamental Research Grant Scheme (FRGS).

The cross-sectional SEM images indicated that the conductive thin films have a layered structure where the insertion of SWCNT did not change their morphological structure significantly.
SWCNT is a concentric nanotube with smaller bundle size and structure compare to MWCNT.
The film has a massive layered structure as a result of copolymerization (Fig 2a-b).
Chemistry and applications, Curr.
Galiotis, Carbon nanotube-polymer composites: chemistry, processing, mechanical and electrical properties, Prog.

However, it has been also shown that the inclusions were not equally effective for different steel chemistry, i.e.
This circumstance indicated that it is necessary to confirm experimentally before planning any application of the technology for a specific steel grade of particular chemistry. 42CrMo4 steel is a quenched and tempered fine grained low-carbon low-alloy chromium-molybdenum steel grade.
Beside the observed significant effects on grain structure, the performed Ce addition has also profound influence on morphology of dendritic networks in the solidification structure.
Quantitative evaluation of important characteristics of solidification structure of the studied steels.
Two important changes were noted in grain structure of 42CrMo4Ce steel sample: the significant increase in the amount of equiaxed crystals in final solidification structure and grain size refinement in the both equiaxed and columnar zone.

These big pores give the film a sponge-like structure.
Such a structure makes it easier for liquids or dye molecules to enter and move through the film.
Journal of Industrial and Engineering Chemistry, (2014), 20: 1198–1208
Khan, Nanoparticles: Properties, applications and toxicities, Arabian Journal of Chemistry, (2019),12(7): 908-931 [11] P.
Jana, Solar cells based on dyes, Journal of Photochemistry and Photobiology A: Chemistry, (2000), 132: 1-17 [16] Dr.

Its ease of use has allowed it to invade many areas of science, such as microelectronics, micromechanics, analytical chemistry, and biochemistry.
Complex structures can't be fabricated unless a 3-D ultra precision stage is introduced [11].
Surface roughness is extremely important to soft lithography for patterning high-resolution structures.
This method is convenient, inexpensive and rapid for research application, especially physics, biochemistry, material and analytical chemistry.
Ongoing work is focusing on making 3-D structures in polymer materials and fabricating functional devices in optics, chemistry, and material science by elastomeric stamps based on soft lithography.