On the crystallization behavior of cold-drawn syndiotactic polypropylene

1996 ◽  
Vol 274 (10) ◽  
pp. 1006-1011 ◽  
Author(s):  
J. Loos ◽  
A. H�ckert ◽  
J. Petermann
Keyword(s):  
Crystallization Behavior ◽  
Syndiotactic Polypropylene

Synthesis, structure and properties of copolymers of syndiotactic polypropylene with 1-hexene and 1-octene

2021 ◽  
Author(s):  
Miriam Scoti ◽  
Rocco Di Girolamo ◽  
Fabio De Stefano ◽  
Angelo Giordano ◽  
Anna Malafronte ◽  
...  
Keyword(s):  
Elastic Properties ◽  
Crystallization Behavior ◽  
Structure And Properties ◽  
Syndiotactic Polypropylene ◽  
Elastomeric Materials

Incorporation of long branches, such as 1-hexene or 1-octene, in syndiotactic polypropylene gives novel elastomeric materials, whose crystallization behavior and elastic properties can be easily tailored through tuning of the branches concentration.

Crystallization sequence of an A1N-Y2O3-SiO2 glass-ceramic

1986 ◽  
Vol 44 ◽  
pp. 446-447
Author(s):  
T.R. Dinger ◽  
G. Thomas
Keyword(s):  
High Temperature ◽  
Glass Ceramic ◽  
Crystallization Behavior ◽  
High Stress ◽  
Crystallization Sequence ◽  
Sio2 Glass ◽  
Structural Applications ◽  
Ceramic Precursors

The use of Si3N4, alloys for high temperature, high stress structural applications has prompted numerous studies of the oxynitride glasses which exist as intergranular phases in their microstructures. Oxynitride glasses have been investigated recently in their bulk form in order to understand their crystallization behavior for subsequent Si3N4 applications and to investigate their worth as glass-ceramic precursors. This research investigates the crystallization sequence of a glass having a normalized composition of Y26Si30Al11 ON11 and lying in the A1N-Y2O3-SiO2 section of the Y-Si-Al-O-N system. Such glasses exist as intergranular phases in the technologically important Y2O3/Al2O3-fluxed Si3N4 alloys.

Crystallization Behavior of Polyvinyl Alcohol with 1,2-Diol Side-Chains

2018 ◽  
Vol 33 (2) ◽  
pp. 234-244 ◽  
Author(s):  
M. Shibutani ◽  
T. Yamamoto ◽  
K. Inoue ◽  
K. Tokumitsu
Keyword(s):  
Polyvinyl Alcohol ◽  
Crystallization Behavior ◽  
Side Chains

Crystallization Behavior of an Au Based Metallic Glass at High Temperature

2019 ◽  
Author(s):  
F.X. Bai ◽  
S.J. Zheng ◽  
Y.X. Wang ◽  
J. Pan ◽  
J.H. Yao ◽  
...  
Keyword(s):  
High Temperature ◽  
Metallic Glass ◽  
Crystallization Behavior

Non-isothermal crystallization behavior of spinel crystals in FeO-SiO2-TiO2-V2O3-Cr2O3 slag

2018 ◽  
Vol 116 (1) ◽  
pp. 110
Author(s):  
Lixiong Shao ◽  
Jiang Diao ◽  
Wang Zhou ◽  
Tao Zhang ◽  
Bing Xie
Keyword(s):  
Cooling Rate ◽  
Crystallization Behavior ◽  
Crystal Size ◽  
Growth Mechanisms ◽  
Vanadium Slag ◽  
Growth Behaviour ◽  
Temperature Range ◽  
Chromium Spinel ◽  
Mean Diameter ◽  
The Mean

The growth behaviour of spinel crystals in vanadium slag with high Cr2O3 content was investigated and clarified by statistical analyses based on the Crystal Size Distribution (CSD) theory. The results indicate that low cooling rate and Cr2O3 content benefit the growth of spinel crystals. The chromium spinel crystals firstly precipitated and then acted as the heterogeneous nuclei of vanadium and titanium spinel crystals. The growth mechanisms of the spinel crystals at the cooling rate of 5 K/min consist two regimes: firstly, nucleation control in the temperature range of 1873 to 1773 K, in which the shapes of CSD curves are asymptotic; secondly, surface and supply control within the temperature range of 1773 to 1473 K, in which the shapes of CSD curves are lognormal. The mean diameter of spinel crystals increases from 3.97 to 52.21 µm with the decrease of temperature from 1873 to 1473 K.

Sign in / Sign up

Export Citation Format

Share Document