Study on the nonisothermal crystallization process of mLLDPE/EVA blends using FTIR micro-spectroscopy

2005 ◽  
Vol 96 (2) ◽  
pp. 261-267 ◽  
Author(s):  
Tong Wu ◽  
Ying Li ◽  
Qiang Wu ◽  
Gang Wu ◽  
Hui-Min Tan
Keyword(s):  
Crystallization Process ◽  
Nonisothermal Crystallization

Study on Non-Isothermal Crystallization Kinetics of PBT with High Melt Flow Index

2012 ◽  
Vol 487 ◽  
pp. 58-63 ◽  
Author(s):  
Qing Yan Xu ◽  
Lin Wang ◽  
Yuan Liu ◽  
Zhi Hong Guo ◽  
Pei Jie Lin ◽  
...  
Keyword(s):  
Isothermal Crystallization ◽  
Crystallization Process ◽  
Melt Flow Index ◽  
Flow Index ◽  
Melt Flow ◽  
Nonisothermal Crystallization ◽  
Isothermal Crystallization Kinetics ◽  
Avrami Index ◽  
Ozawa Equation ◽  
Kinetics Of

The non-isothermal crystallization process of PBT with high melt flow index has been investigated by DSC, and the nonisothermal crystallization process of PBT with high melt flow index was studied by Ozawa equation and Jeziorny equation respectively. It was found that Ozawa equation, rather than Jeziorny equation, could appropriately be applied to study the non-isothermal crystallization process of PBT with high melt flow index. The Avrami index, obtained by Ozawa equation, varied between 1.06-1.80 with the change in temperature.

scholarly journals Effects of Soybean Oil Modified Cellulose Fibril and Organosilane Modified Cellulose Fibril on Crystallization of Polypropylene

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Sarit Thanomchat ◽  
Kawee Srikulkit
Keyword(s):  
Soybean Oil ◽  
Crystallization Process ◽  
Optical Microscope ◽  
Particle Dispersion ◽  
Melt Mixing ◽  
Nonisothermal Crystallization ◽  
Cellulose Fibril ◽  
Crystallization Study ◽  
Modified Cellulose ◽  
Composite Samples

Soybean oil modified cellulose fibril (Oil-g-CF) and organosilane modified cellulose fibril (Silane-g-CF) were prepared using maleinized soybean oil and hexadecyltrimethoxysilane, respectively. Thus obtained modified cellulose fibril was added to polypropylene by a simple melt mixing on a hotplate. PP/modified CF composites with 4.0 wt% filler content were prepared. The composites were subject to a polarized optical microscope to investigate particle dispersion, supramolecular morphology, and crystallization behavior. It was found that Silane-g-CF exhibited smaller particle sizes with better particle distribution when compared to Oil-g-CF. In addition, the etched composite samples unveiled an increase in a number of spherulite crystals as well as a decrease in the spherulite size. The nonisothermal crystallization study of composites revealed that both Oil-g-CF and Silane-g-CF were capable of nucleating PP by facilitating faster crystallization process and raising the number of spherulites. The DSC results indicated that Silane-g-CF was able to perform a more effective nucleation than Oil-g-CF, judged by a higher crystallization temperature. Moreover, PP composites containing Oil-g-CF and Silane-g-CF had higher crystallinity by 7% and 10%, for the first and the latter, respectively, when compared to neat PP.

Nonisothermal crystallization kinetics of polybutene-1 containing nucleating agent with acid amides structure

2014 ◽  
Vol 34 (1) ◽  
pp. 53-58 ◽  
Author(s):  
Yongxian Zhao ◽  
Junyi Chen ◽  
Lei Han ◽  
Le Zhao
Keyword(s):  
Crystallization Process ◽  
Crystallization Rate ◽  
Nucleating Agent ◽  
Mass Ratio ◽  
Scanning Calorimetry ◽  
Nonisothermal Crystallization ◽  
Nucleation Effect ◽  
Activation Energy Of Crystallization ◽  
Nonisothermal Crystallization Kinetics ◽  
Kinetics Of

Abstract The nonisothermal crystallization behaviors of virgin isotactic polybutene-1 (iPB-1) and iPBn (iPB-1 containing a nucleating agent that owns acid amides structure; iPB/Mult920=100/0.5, mass ratio) were studied by means of differential scanning calorimetry (DSC). Modified Avrami theories (Ozawa method) and Mo method were used to analyze the DSC date. The results show that both methods are suitable to describe the crystallization process of iPB-1 and iPBn. Addition of 0.5% (mass ratio) nucleating agent can give rise to the nucleation effect, which increases the crystallization temperature (Tc) and the rate of crystallization of iPB-1, decreases the activation energy of crystallization (ΔE), and increases the crystallization rate of iPB-1 under the actual conditions.

Raman scattering studies on slow crystallization process from amorphous PbTiO3

1983 ◽  
Vol 44 (11) ◽  
pp. 313-318 ◽  
Author(s):  
Masaaki Takashige ◽  
Terutaro Nakamura ◽  
Yutaka Aikawa
Keyword(s):  
Raman Scattering ◽  
Crystallization Process

STUDY OF THE DEPENDENCE OF THE CRYSTALLIZATION PROCESSES OF POLYMER MICROCOMPOSITES ON THE COOLING RATE

2017 ◽  
Author(s):  
◽  
Nataliia Fialko ◽  
Viktor Prokopov ◽  
Julii Sherenkovskiy ◽  
Nataliia Meranova ◽  
...  
Keyword(s):  
Cooling Rate ◽  
Crystallization Process

The analysis of the effect of the cooling rate on the main parameters of the crystallization process from the melt of composites obtained based on various matrices - polyethylene, polypropylene and polycarbonate, using copper microparticles as a filler is carried out.

Innovative energy and mass balance of a continuous evaporating crystallizer

2019 ◽  
pp. 646-654
Author(s):  
Jan Iciek ◽  
Kornel Hulak ◽  
Radosław Gruska
Keyword(s):  
Energy Balance ◽  
Mass Balance ◽  
Working Conditions ◽  
Crystallization Process ◽  
Heat Losses ◽  
Inert Gas ◽  
Gas Removal ◽  
Energy Balances ◽  
Heat Released ◽  
Mass And Energy Balances

The article presents the mass and energy balances of the sucrose crystallization process in a continuous evaporating crystallizer. The developed algorithm allows to assess the working conditions of the continuous evaporating crystallizers and the technological and energy parameters. The energy balance algorithm takes into account the heat released during the crystallization of sucrose, which was analyzed in this study, heat losses to the environment and heat losses due the vapor used for inert gas removal.

Initiation of the Explosive Crystallization Process in Amorphous Alloys of the Fe-Zr System by Pulse Laser Treatment

2019 ◽  
Vol 11 (2) ◽  
pp. 02004-1-02004-5
Author(s):  
T. L. Tsaregradskaya ◽  
◽  
Yu. A. Kunitskyi ◽  
О. О. Kаlenyk ◽  
I. V. Plyushchay ◽  
...  
Keyword(s):  
Laser Treatment ◽  
Pulse Laser ◽  
Amorphous Alloys ◽  
Crystallization Process ◽  
Explosive Crystallization
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