Modification of Crystallization Properties of Poly(ethylene terephthalate) by Copolymerization with Arylate Units. 1. Preparation and Isothermal Crystallization of 4,4'-Biphenol-Containing Copolymers

1995 ◽  
Vol 28 (18) ◽  
pp. 6155-6160 ◽  
Author(s):  
Yoshimitsu Sakaguchi ◽  
Masami Okamoto ◽  
Itsuro Tanaka
Keyword(s):  
Isothermal Crystallization ◽  
Ethylene Terephthalate ◽  
Crystallization Properties ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene

The Melting Behavior of Poly(Ethylene Terephthalate)/ Attapulgite Nanocomposites

2013 ◽  
Vol 773 ◽  
pp. 530-533
Author(s):  
Chen Liu ◽  
Xiang Hui Lu ◽  
Xue Qi ◽  
Peng Li
Keyword(s):  
Crystallization Temperature ◽  
Isothermal Crystallization ◽  
Ethylene Terephthalate ◽  
Melting Process ◽  
Melting Behavior ◽  
Crystallization Time ◽  
Scanning Calorimetry ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene ◽  
Crystallization From The Melt

The melting and recrystallization behavior of Poly(ethylene terephthalate) (PET)/ Attapulgite(At)nanocomposites after isothermal crystallization from the melt was studied by Step-scan differential scanning calorimetry (SDSC). The influence of At contents, crystallization temperature and crystallization time on the melting process were examined. Two melting endotherms(in the SDSC CP.A curves, reversible part) and one recrystallization exotherm (in the SDSC CP.IsoK curves, irreversible part)of PET/At nanocomposites after isothermal crystallization were observed during the melt process. This ascribes to the melting-recrystallization mechanism .The low temperature endotherm attributes to the melting of primary crystal formed during the isothermal treating and the high temperature endotherm resulting from the melting of recrystallization materials. The reason why more recrystallization happened with the increase of At content was given and the process of recrystallization was described in detail. The effects of crystal perfection and recrystallization were minimized by increasing of crystallization temperature and time.

Surface Effect of Two Different Calcium Fluoride Fillers on the Non-Isothermal Crystallization Behavior of Poly(ethylene Terephthalate)

2013 ◽  
Vol 53 (2) ◽  
pp. 173-190 ◽  
Author(s):  
Regina Janet Sánchez-Leija ◽  
Marta Riba-Moliner ◽  
Diana Cayuela-Marín ◽  
Octavio Domínguez-Espinós ◽  
María Guadalupe Sánchez-Loredo
Keyword(s):  
Calcium Fluoride ◽  
Isothermal Crystallization ◽  
Crystallization Behavior ◽  
Ethylene Terephthalate ◽  
Surface Effect ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene

Melting and Crystallization Properties of Crystalline/Crystalline Blends of Poly(Trimethylene Terephthalate) and Poly(Ethylene Terephthalate)

2014 ◽  
Vol 665 ◽  
pp. 331-334
Author(s):  
Xue Ming Cai ◽  
Shi Hong Li ◽  
Pan Jin Jia ◽  
Ming Tao Run
Keyword(s):  
Ethylene Terephthalate ◽  
Amorphous State ◽  
Recrystallization Process ◽  
Scanning Calorimetry ◽  
Crystallization Properties ◽  
Poly Ethylene Terephthalate ◽  
Supercooling Degree ◽  
Trimethylene Terephthalate ◽  
Poly Ethylene ◽  
Melting And Crystallization

Poly (ethylene terephthalate)/poly (trimethylene terephthalate) (PET/PTT) blends were prepared and their melting and crystallization properties were investigated by differential scanning calorimetry (DSC). The glass transition temperatures suggest apparently that PET and PTT have good miscibility at amorphous state. The blends with more PET content less likely undergo a melting/recrystallization process during DSC heating scan. In the blends, PET component with higher supercooling degree will crystallize first, and then the crystallites of PET will be the nucleating agents for PTT, which greatly improves the crystallization rate of PTT.

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