Some comments on modeling of two-stage crystallization kinetics

1993 ◽  
Vol 31 (2) ◽  
pp. 237-240 ◽  
Author(s):  
Benjamin Hsiao
Keyword(s):  
Crystallization Kinetics ◽  
Two Stage ◽  
Stage Crystallization

Analysis of two-stage crystallization kinetics for poly(ethylene terephthalate)/ poly(ether imide) blends

Polymer ◽  
1997 ◽  
Vol 38 (16) ◽  
pp. 4097-4101 ◽  
Author(s):  
Jenn Chiu Hwang ◽  
Chia-Chen Chen ◽  
Hsin-Lung Chen ◽  
Wen-Chung Ou Yang
Keyword(s):  
Crystallization Kinetics ◽  
Ethylene Terephthalate ◽  
Two Stage ◽  
Poly Ethylene Terephthalate ◽  
Stage Crystallization ◽  
Poly Ethylene

Overall crystallization kinetics of polymorphic propylene–ethylene random copolymers: A two-stage parallel model of Avrami kinetics

Polymer ◽  
2007 ◽  
Vol 48 (11) ◽  
pp. 3170-3182 ◽  
Author(s):  
Y.L. Chiari ◽  
M. Vadlamudi ◽  
R. Chella ◽  
K. Jeon ◽  
R.G. Alamo
Keyword(s):  
Crystallization Kinetics ◽  
Random Copolymers ◽  
Parallel Model ◽  
Two Stage ◽  
Avrami Kinetics ◽  
Kinetics Of

scholarly journals Kinetics and mechanisms of two-stage crystallization of Fe85B15amorphous alloy

2008 ◽  
Vol 98 (5) ◽  
pp. 052012 ◽  
Author(s):  
V I Tkatch ◽  
T N Moiseeva ◽  
S G Rassolov ◽  
V V Popov ◽  
V V Maksimov
Keyword(s):  
Two Stage ◽  
Stage Crystallization

In situ detection of two-stage crystallization in ZrTiCuNiBe under high pressure and high temperature

2002 ◽  
Vol 14 (44) ◽  
pp. 11243-11247 ◽  
Author(s):  
L L Sun ◽  
T Kikegawa ◽  
Q Wu ◽  
Z J Zhan ◽  
L M Cao ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Two Stage ◽  
Stage Crystallization ◽  
In Situ Detection

Physical gelation process as direct evidence for crystallization behavior of isotactic polypropylene/clay composites

2016 ◽  
Vol 29 (12) ◽  
pp. 1656-1666 ◽  
Author(s):  
Ali Sarvi ◽  
Farhad Sharif
Keyword(s):  
Crystallization Kinetics ◽  
Early Stage ◽  
Relaxation Modulus ◽  
Polymeric Materials ◽  
Relative Crystallinity ◽  
Low Frequencies ◽  
Clay Concentration ◽  
Stage Crystallization ◽  
Physical Gelation ◽  
Kinetics Of

Early stage crystallization kinetics of polypropylene (PP)/clay composites is studied using rheometery. Relaxation modulus of composites is measured at low frequencies near liquid–solid transition. Small amplitude oscillating shear flow is applied at low frequencies to obtain relaxation modulus. Relaxation modulus of polymeric materials at the liquid–solid transition follows [Formula: see text], at long times ( λ < t < ∞), where λ is the time to crossover to a different relaxation regime, s is the gel stiffness, and n is the relaxation exponent. Inverse quenching technique is then employed to retain degree of crystallization while rheological measurements are made. Lower gel time is observed as clay concentration increased, indicating the formation of more nuclei. An improvement to Avrami’s equation is proposed to predict crystallization kinetics for PP/clay composites. There is a good agreement between predicted relative crystallinity values and empirical values.

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