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The structure of the PLA/cellulose nanowhiskers/PEG composites were characterized by AFM, which showed that the cellulose nanowhiskers dispersed evenly in the PLA matrix.
Though the differences exist in the chemical structures between PLA and cellulose whiskers, there are not two or more stages in the degradation stage, which is the same as pure PLA [9].
From the molecular structure characters, hydrogen bond effects exist between hydroxyl groups of cellulose whiskers and function groups of PLA or PEG.
[9] Qu ping, Zhang li-ping, Duan jiu-fang, Cao yu: Chemistry & Industry of Forest Products, (2009)

Baker2,b 1Department of Chemistry, Sensorlab, University of the Western Cape, Robert Sobukwe Road, Bellville, 7535, South Africa 2Department of Chemistry, Sensorlab, University of the Western Cape, Robert Sobukwe Road, Bellville, 7535, South Africa a3865220@myuwc.ac.za , bpbaker@uwc.ac.za Keywords: photocatalysis/photocatalytic, earth abundant metals, fuel cell, ammonia Abstract.
Wang, “Synthesis and structure of a new layered oxyfluoride Sr2ScO3F with photocatalytic property,” Mater.
Zhu et al., “Novel chromium doped perovskites A2ZnTiO6(A = Pr, Gd): Synthesis, crystal structure and photocatalytic activity under simulated solar light irradiation,” Appl.
Lu, “Electronic structures and optical properties of monoclinic ZrO2 studied by first-principles local density approximation + U approach,” J.
Treichel, “Electron Configuration of Atoms,” in Chemistry & Chemical Reactivity, 10th ed., Boston: Cengage Learning, 2017, pp. 315–323

Accordingly, a three-layer structure back-propagation network model based on the non-linear relationship between the size of the CaCO3 nanocrystalline and the technological factors, such as reaction time, reaction temperature, raw material adding amount of Na2CO3 and CaCl2, was established in this paper.
In the classical structure of a BP, the output of each layer is sent directly to neuron in the layer above.
The method can be described in detail as the following: (1) first of all, the experimental data is regulated, decides the net input/output and construct the learning sample; (2) defining the net structure.
Lu, The Key Technology for light and nanometer CaCO3, Press of Chemistry Industry, Beijing, 2012

TEM analysis illustrated rod-shaped structures in the nano range.
The sample exhibited high peak intensity at a 2θ value of 22° (corresponds to lattice plane 200), which refers to the crystalline structure of cellulose.
Additionally, the peak at 900 cm-1 is of the typical cellulose structure due to β-(1-4) glycosidic linkage of glucose units in the cellulose chain [23].
Ceniceros, Biointerface Research in Applied Chemistry 11 (2020) 11797-11816.

The surface morphology, surface area and crystal structure of the particles have been investigated.
It is well known that radiation stability is for materials to maintain their initial chemical composition, structure and properties during and after exposure to ionizing radiation.
The zinc oxide micro- and nanopowders with 99.8% purity were purchased from Aladdin Chemistry company.
Results and Discussions SEM analysis of synthesis powders show that the star particles are hierarchically structured with average sizes of about 5000 nm and consist of a radial arrangement of hundreds of nanorods (Fig.1).

As an oxidized form of graphene, graphene oxide has a variety of oxygen-containing groups together with a laminar structure, showing great potential in various engineering applications.
The results demonstrate the GONSs with more oxygen-containing groups and monolayer structure can be obtained by the chemical oxidation, and the water contact angle of the GONSs ups to ~3.9°.
Pumera, Chemical reduction of graphene oxide: a synthetic chemistry viewpoint, Chem.

Results additionally indicate that maybe oxidative damage caused by CuO NPs was the primary reason that led to membrane structure and function failed.
Consequently, the structure and function of membrane, physiological metabolism would be paralysis.
The Journal of Physical Chemistry C 2009, 113, 10962-10966

A decrease in the rate of return deformation during irradiation of the material is associated with the frictional properties between macromolecules and a change in the structure, which leads to a weaker straightening of the polymer and their poor sliding.
The reason for this is a decrease in the frictional properties between macromolecules and a change in the structure, which leads to weaker straightening of polymer chains and their poor sliding (Figure 1, right).
Nair, Deformation mechanisms of polytetrafluoroethylene at the nano- and microscales, Royal Society of Chemistry. 21 1 (2019) 490-503. https://doi.org/10.1039/c8cp05111a [5] T.D.

For the same urea synthesis tower structure, the conversion rate increased 3~5%.
Studies have shown that the reaction of NH3 and CO2 can only completed in the liquid-phase [8], therefore, the continuous reaction of equation (1) can be guaranteed only by CO2 dissolving into liquid-phase unceasingly, meaning that firstly gas-phase of NH3 and CO2 is transformed into liquid-phase through physical process, and then the liquid ammonium carbamate is generated through chemistry process of synthetic reaction.
For the same urea synthesis tower structure, the conversion rate increases 3~5%.

The microscopic structure and phases were analyzed by metallographic microscopic and XRD.
Fig .2 XRD patterns of Al-13%Si-0.7%Fe-0.75%Mn-2%MoS2 -1.5%Cr3C2 By analysising Metallographic Structures （Fig.1）and XRD patterns (Fig.2), it can be seen the chief new phases are showed as fo11ows: Al3Fe: needle form; Al3.21Si0.47: catkin form; Al5Mo is a soft phase which distributes in Al-Si Alloy independently.
Materials Chemistry and Physics, (2008), 108(2-3): 296-305