Annealing behavior of the novel morphology of poly(butylene succinate) lath-shaped single crystals

2009 ◽  
Vol 47 (15) ◽  
pp. 1492-1496 ◽  
Author(s):  
Jiufang Duan ◽  
Baohua Guo
Keyword(s):  
Single Crystals ◽  
The Novel ◽  
Butylene Succinate ◽  
Annealing Behavior

Two-stage self-seeding method for preparation of single crystals of poly(phenylene sulfide)

1989 ◽  
Vol 47 ◽  
pp. 368-369
Author(s):  
Sengshiu Chung ◽  
Peggy Cebe
Keyword(s):  
Single Crystals ◽  
High Performance ◽  
Dilute Solution ◽  
Two Stage ◽  
Annealing Behavior ◽  
High Performance Polymers ◽  
Seeding Method ◽  
Phenylene Sulfide

We are studying the crystallization and annealing behavior of high performance polymers, like poly(p-pheny1ene sulfide) PPS, and poly-(etheretherketone), PEEK. Our purpose is to determine whether PPS, which is similar in many ways to PEEK, undergoes reorganization during annealing. In an effort to address the issue of reorganization, we are studying solution grown single crystals of PPS as model materials.Observation of solution grown PPS crystals has been reported. Even from dilute solution, embrionic spherulites and aggregates were formed. We observe that these morphologies result when solutions containing uncrystallized polymer are cooled. To obtain samples of uniform single crystals, we have used two-stage self seeding and solution replacement techniques.

scholarly journals Some Novel Cobalt Diphenylphosphine Complexes: Synthesis, Characterization, and Behavior in the Polymerization of 1,3-Butadiene

Molecules ◽  
2021 ◽  
Vol 26 (13) ◽  
pp. 4067
Author(s):  
Giovanni Ricci ◽  
Giuseppe Leone ◽  
Giorgia Zanchin ◽  
Benedetta Palucci ◽  
Alessandra Forni ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Single Crystals ◽  
The Novel ◽  
X Ray Diffraction ◽  
X Ray ◽  
And Behavior

Some novel cobalt diphenylphosphine complexes were synthesized by reacting cobalt(II) chloride with (2-methoxyethyl)diphenylphosphine, (2-methoxyphenyl)diphenylphosphine, and 2-(1,1-dimethylpropyl)-6-(diphenylphosphino)pyridine. Single crystals suitable for X-ray diffraction studies were obtained for the first two complexes, and their crystal structure was determined. The novel compounds were then used in association with methylaluminoxane (MAO) for the polymerization of 1,3-butadiene, and their behavior was compared with that exhibited in the polymerization of the same monomer by the systems CoCl2(PnPrPh2)2/MAO and CoCl2(PPh3)2/MAO. Some significant differences were observed depending on the MAO/Co ratio used, and a plausible interpretation for such a different behavior is proposed.

Annealing behavior of electrical properties of n-InSe single crystals

1984 ◽  
Vol 86 (1) ◽  
pp. K69-K72 ◽  
Author(s):  
S. Shigetomi ◽  
T. Ikari ◽  
Y. Koga ◽  
S. Shigetomi
Keyword(s):  
Electrical Properties ◽  
Single Crystals ◽  
Annealing Behavior

Crystal Structure and Magnetic Properties of the Novel Hollandite Ba1.3Co1.3Ti6.7O16

2011 ◽  
Vol 66 (11) ◽  
pp. 1097-1100 ◽  
Author(s):  
Larysa Shlyk ◽  
Rainer Niewa
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Magnetic Susceptibility ◽  
Single Crystals ◽  
Magnetic Moment ◽  
High Spin State ◽  
The Novel ◽  
Charge Balance ◽  
Vertex Sharing ◽  
State Spin

Single crystals of the new barium hollandite Ba1.3Co1.3Ti6.7O16 were obtained from a BaCl2 flux (I2/m, Z = 1, a = 9.9470(4), b = 2.9714(2), c = 10.2260(5) Å , β = 90.906(2)◦). In the crystal structure piles of Ba atoms are situated within a framework of edge- and vertex-sharing octahedra (Co,Ti)O6. The composition was deduced from microprobe analyses, structure refinements and charge balance arguments in agreement with the observed magnetic properties. The temperature dependence of the magnetic susceptibility χ(T) of Ba1.3Co1.3Ti6.7O16 single crystals reveals paramagnetism down to 2 K. The value of the Co magnetic moment deduced from the Curie-Weiss law agrees well with the theoretical value of the high-spin state spin-only moment of μeff = 3.87 μB for Co2+ (S = 3/2)

scholarly journals Novel Three-Dimensional Copper(II) 1,2- Ethylenediphosphonate Framework with Channel-like Voids

2019 ◽  
Author(s):  
Roberto Köferstein
Keyword(s):  
Thermal Treatment ◽  
Coordination Polymer ◽  
Single Crystals ◽  
Magnetic Measurements ◽  
Three Dimensional ◽  
Ambient Air ◽  
Water Molecules ◽  
The Novel ◽  
Square Planar ◽  
Superexchange Coupling

Turquoise monoclinic single crystals of the novel three-dimensional Cu2[μ8-O3P(CH2)2PO3)].3.2H2O coordination polymer have been prepared using the silica gelmethod. Space group C2/m (no. 12) with a = 1483.6(2), b = 668.44(8), c = 436.30(6) pm, beta =93.28(2)°. The Cu2+ cation is coordinated by four oxygen atoms stemming from the 1,2-ethylenediphosphonate dianions in a square planar manner and two water molecules in theaxial positions. The connection between the Cu2+ cations and the [PO3C] units from the 1,2-ethylenediphosphonate dianions leads to layers parallel to (100), which are linked by theethylene groups to a three-dimensional framework with channel-like voids. The voidsaccommodate water molecules not bound to Cu2+ and extend parallel along [001] with anopening of about 550 260 pm. Magnetic measurements reveal an antiferromagneticbehaviour due to a superexchange coupling between Cu2+ ions through an oxygen bridge. TheUV-Vis spectrum reveals three dd transition bands at 694, 774, and 918 nm. The compoundcan be fully dehydrated by thermal treatment and rehydrated by storage in ambient air.

Preparation and characterization of the novel water-crosslinked cellulose reinforced poly(butylene succinate) composites

2006 ◽  
Vol 66 (13) ◽  
pp. 2231-2241 ◽  
Author(s):  
Chen-Feng Kuan ◽  
Chen-Chi M. Ma ◽  
Hsu-Chiang Kuan ◽  
Han-Lang Wu ◽  
Yu-Mei Liao
Keyword(s):  
The Novel ◽  
Butylene Succinate

Structure and Annealing Behavior of Explosively Shocked Magnesia Single Crystals

1963 ◽  
Vol 46 (7) ◽  
pp. 356-358 ◽  
Author(s):  
MARK J. KLEIN ◽  
FRANK A. ROUGH ◽  
CHARLES C. SIMONS
Keyword(s):  
Single Crystals ◽  
Annealing Behavior

High-temperature annealing behavior of ion-implanted spinel single crystals

2004 ◽  
Vol 19 (12) ◽  
pp. 3463-3473 ◽  
Author(s):  
S.E. Enescu ◽  
L. Thomé ◽  
A. Gentils ◽  
T. Thomé
Keyword(s):  
High Temperature ◽  
Single Crystals ◽  
Structural Properties ◽  
Nuclear Waste ◽  
Annealing Temperature ◽  
High Temperature Annealing ◽  
Annealing Behavior ◽  
Lattice Disorder ◽  
Cs Ions ◽  
Composition Changes

This paper reports modifications of the chemical and structural properties of MgAl2O4 single crystals implanted with Cs ions and submitted to high-temperature annealing. The composition changes, the damage created in the three sublattices (Al, Mg and O) of the crystals, and the behavior of implanted ions were studied by Rutherford backscattering and channeling experiments as a function of the Cs fluence and annealing temperature. The data show that annealing above 700–800 °C induces a huge modification of the stoichiometry of the material, a decrease of the lattice disorder, and an increase of the fraction of Cs atoms located in substitutional lattice sites. These results have to be taken into account for the future use of spinel as a matrix for the transmutation of nuclear waste.

scholarly journals Lead-Free Perovskite Single Crystals: A Brief Review

Crystals ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1329
Author(s):  
Xianfang Zhou ◽  
Yansong Wang ◽  
Chuangye Ge ◽  
Bin Tang ◽  
Haoran Lin ◽  
...  
Keyword(s):  
Single Crystals ◽  
Diffusion Length ◽  
Low Cost ◽  
Lead Free ◽  
The Novel ◽  
Preparation Methods ◽  
Light Emitting ◽  
Practical Applications ◽  
Interfacial Engineering ◽  
Remarkable Progress

Lead-free perovskites have received remarkable attention because of their nontoxicity, low-cost fabrication, and spectacular properties including controlled bandgap, long diffusion length of charge carrier, large absorption coefficient, and high photoluminescence quantum yield. Compared with the widely investigated polycrystals, single crystals have advantages of lower trap densities, longer diffusion length of carrier, and extended absorption spectrum due to the lack of grain boundaries, which facilitates their potential in different fields including photodetectors, solar cells, X-ray detectors, light-emitting diodes, and so on. Therefore, numerous research focusing on the novel properties, preparation methods, and remarkable progress in applications of lead-free perovskite single crystals (LFPSCs) has been extensively studied. In this review, the current advancements of LFPSCs are briefly summarized, including the synthesis approaches, compositional and interfacial engineering, and stability of several representative systems of LFPSCs as well as the reported practical applications. Finally, the critical challenges which limit the performance of LFPSCs, and their inspiring prospects for further developments are also discussed.

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