Controlling Polymer Crystallization Kinetics by Sample History

2017 ◽  
Vol 219 (3) ◽  
pp. 1700315 ◽  
Author(s):  
Purushottam Poudel ◽  
Sivasurender Chandran ◽  
Sumit Majumder ◽  
Günter Reiter
Keyword(s):  
Crystallization Kinetics ◽  
Polymer Crystallization

Non-isothermal polymer crystallization kinetics and Avrami master curves

1998 ◽  
Vol 38 (4) ◽  
pp. 610-615 ◽  
Author(s):  
Markus Lambrigger
Keyword(s):  
Crystallization Kinetics ◽  
Polymer Crystallization ◽  
Master Curves

scholarly journals Temperature effects for isothermal polymer crystallization kinetics

2005 ◽  
Vol 122 (24) ◽  
pp. 244905 ◽  
Author(s):  
Jiao Yang ◽  
Benjamin J. McCoy ◽  
Giridhar Madras
Keyword(s):  
Crystallization Kinetics ◽  
Temperature Effects ◽  
Polymer Crystallization

Some issues on polymer crystallization kinetics studied by DSC non isothermal tests

2006 ◽  
Vol 56 (6) ◽  
pp. 591-598 ◽  
Author(s):  
Gaetano Lamberti ◽  
Carlo Naddeo
Keyword(s):  
Crystallization Kinetics ◽  
Polymer Crystallization

Simulation of polymer crystallization kinetics with the Sadler/Gilmer model

Polymer ◽  
1990 ◽  
Vol 31 (4) ◽  
pp. 586-592 ◽  
Author(s):  
Gerhard Goldbeck-Wood
Keyword(s):  
Crystallization Kinetics ◽  
Polymer Crystallization

DSC isothermal polymer crystallization kinetics measurements and the use of the Avrami equation to fit the data: Guidelines to avoid common problems

2007 ◽  
Vol 26 (2) ◽  
pp. 222-231 ◽  
Author(s):  
Arnaldo T. Lorenzo ◽  
María Luisa Arnal ◽  
Julio Albuerne ◽  
Alejandro J. Müller
Keyword(s):  
Crystallization Kinetics ◽  
Polymer Crystallization ◽  
Avrami Equation ◽  
Common Problems

scholarly journals A Note for Probabilistic Model of Polymer Crystallization in Temperature Gradients

Crystals ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 538
Author(s):  
Chunlei Ruan ◽  
Yunlong Lv
Keyword(s):  
Temperature Gradient ◽  
Crystallization Kinetics ◽  
Probabilistic Model ◽  
Polymer Crystallization ◽  
Temperature Gradients ◽  
Kinetics Model ◽  
Gradient Field ◽  
Conversion Degree ◽  
Avrami Equation ◽  
Large Temperature

A polymer crystallization kinetics model is the most important way to characterize the crystallization rate of polymers. Because polymers are poor heat conductors, the cooling of thick-walled shapes results in temperature gradients. Piorkowska (Piorkowska, E. J. Appl. Polym. Sci., 2002, 86: 1351–1362.) derived the probabilistic analytical model of polymer crystallization in temperature gradients based on the Avrami equation. However, there are some misunderstandings when using this model. Here, isotactic polypropylene (iPP) is chosen as a model polymer and its crystallization is studied in a temperature gradient field. Based on the results of the Monte Carlo method, the probabilistic model methodology is discussed. The results show that when the product has a large temperature gradient and a large temperature difference, the probabilistic model cannot be used directly; instead, it is necessary to use the average probabilistic model. This means that the sample should be divided into several smaller parts and the probabilistic model used separately for each small part. The values are then averaged to obtain the mean conversion degree of the melt into spherulites for the whole product. The effects of the division number are also discussed. The goal of the present paper is to better understand the polymer crystallization kinetics model in terms of temperature gradients.

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