Influence of intercalated organoclay on the phase structure and physical properties of PTT–PTMO block copolymers

2012 ◽  
Vol 70 (5) ◽  
pp. 1575-1590 ◽  
Author(s):  
Anna Szymczyk ◽  
Sandra Paszkiewicz ◽  
Zbigniew Roslaniec
Keyword(s):  
Block Copolymers ◽  
Physical Properties ◽  
Phase Structure

scholarly journals Fabrication and Characterization of Some Physical Properties of PZTPMnNPSbN Ceramics Doped with ZnO

2020 ◽  
Vol 129 (1D) ◽  
pp. 5-13
Author(s):  
Nguyen TruongTho
Keyword(s):  
Phase Transition ◽  
Physical Properties ◽  
Phase Structure ◽  
Diffuse Phase Transition ◽  
Dielectric Constants ◽  
Fabrication And Characterization ◽  
Diffuse Phase

The effect of the ZnO addition in pure perovskite PZT-PMnN-PSbN ceramics sintered from 950 to 1200oC has been investigated. The phase structure of ceramics changes from rhombohedral to tetragonal and the temperature decreases with the increase of the ZnO content. The limitation of Zn2+ concentration for the solubility in PZT–PMnN–PSbN systems is about 0.25% wt., at which the ceramic shows some good physical properties such as the density of 8.20 g/cm3, some dielectric constants including εr = 1,555 and εmax = 32,900. The highest value of εmax about 22,000 was found at 1 kHz at the temperature of Tm around 575 K. Using an extended Curie-Weiss law the diffuse phase transition was determined. Cole-Cole analyses showed the non-Debye type relaxation in the system

scholarly journals Structure and Physical Properties of PZT-PMnN-PSN Ceramics Near the Morphological Phase Boundary

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Nguyen Dinh Tung Luan ◽  
Le Dai Vuong ◽  
Truong Van Chuong ◽  
Nguyen Truong Tho
Keyword(s):  
Physical Properties ◽  
Phase Boundary ◽  
Morphotropic Phase Boundary ◽  
Coercive Field ◽  
Phase Structure ◽  
Remanent Polarization ◽  
Perovskite Phase ◽  
Electromechanical Properties ◽  
Ceramic Samples ◽  
Pure Perovskite Phase

The 0.9Pb(ZrxTi1−x)O3-0.07Pb(Mn1/3Nb2/3)O3-0.03Pb(Sb1/2Nb1/2)O3(PZT-PMnN-PSN) ceramics were prepared by columbite method. The phase structure of the ceramic samples was analyzed. Results show that the pure perovskite phase is in all ceramics specimens. The effect of the Zr/Ti ratio on the region of morphotropic phase boundary for PZT-PMnN-PSN ceramics was studied. Experimental results show that the phase structure of ceramics changes from tetragonal to rhombohedral with the increase of the content of Zr/Ti ratio in the system. The composition of PZT-PMnN-PSN ceramics near the morphotropic phase boundary obtained is the ratio of Zr/Ti: 49/51. At this ratio, the ceramic has the optimal electromechanical properties: thekp=0.61, theεmax=29520, thed31=-236 pC/N, theQm=2400, high remanent polarization (Pr=49.2 μC·cm−2), and low coercive fieldEc=10.28 kV·cm−1.

scholarly journals PHYSICAL PROPERTIES OF THE BLOCK COPOLYMERS OF POLY-STYRENE HAVING VINYL GROUPS WITH METHYL-ACRYLATE

1975 ◽  
Vol 48 (9) ◽  
pp. 579-583
Author(s):  
Yasuhiro ISHIKAWA ◽  
Kunio KAGEYAMA ◽  
Fumito WATANABE ◽  
Tatsuro OUCHI ◽  
Minoru IMOTO
Keyword(s):  
Block Copolymers ◽  
Physical Properties ◽  
Methyl Acrylate

The P2-Na2/3Co2/3Mn1/3O2 phase: structure, physical properties and electrochemical behavior as positive electrode in sodium battery

2011 ◽  
Vol 40 (36) ◽  
pp. 9306 ◽  
Author(s):  
D. Carlier ◽  
J. H. Cheng ◽  
R. Berthelot ◽  
M. Guignard ◽  
M. Yoncheva ◽  
...  
Keyword(s):  
Physical Properties ◽  
Electrochemical Behavior ◽  
Phase Structure ◽  
Positive Electrode ◽  
Sodium Battery

Physical properties of isobutylene based block copolymers

2000 ◽  
Vol 40 (10) ◽  
pp. 2182-2193 ◽  
Author(s):  
M. F. Tse ◽  
H.-C. Wang ◽  
T. D. Shaffer ◽  
K. O. McElrath ◽  
M. A. Modi ◽  
...  
Keyword(s):  
Block Copolymers ◽  
Physical Properties

Morphology and physical properties of poly(styrene-b-isobutylene-b-styrene) block copolymers

Polymer ◽  
1996 ◽  
Vol 37 (14) ◽  
pp. 2925-2938 ◽  
Author(s):  
Robson F. Storey ◽  
Bret J. Chisholm ◽  
Michael A. Masse
Keyword(s):  
Block Copolymers ◽  
Physical Properties
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