Analysis of the mechanical behavior of poly(trimethylene terephthalate) in an amorphous state under uniaxial extension–compression condition through atomistic modeling

1999 ◽  
Vol 110 (15) ◽  
pp. 7524-7532 ◽  
Author(s):  
Seung Soon Jang ◽  
Won Ho Jo
Keyword(s):  
Mechanical Behavior ◽  
Uniaxial Extension ◽  
Amorphous State ◽  
Atomistic Modeling ◽  
Trimethylene Terephthalate ◽  
Compression Condition

Cryogenic Mechanical Behavior of Poly(trimethylene terephthalate)

2011 ◽  
Vol 44 (7) ◽  
pp. 2106-2111 ◽  
Author(s):  
Takashi Nishino ◽  
Tai’ichi Okamoto ◽  
Hiroshi Sakurai
Keyword(s):  
Mechanical Behavior ◽  
Trimethylene Terephthalate

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.

Miscibility, Isothermal Crystallization/Melting Behavior and Morphology of Poly(Trimethylene Terephthalate)/Poly(Buthylene Terephthalate) Blends

2008 ◽  
Vol 54 ◽  
pp. 243-248 ◽  
Author(s):  
Pongpipat Krutphun ◽  
Pitt Supaphol
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Amorphous State ◽  
Minor Component ◽  
The Body ◽  
Nucleation Theory ◽  
Melting Point Depression ◽  
Melt Crystallization ◽  
Trimethylene Terephthalate

Blends of poly(trimethylene terephthalate) (PTT) and poly(buthylene terephthalate) (PBT) in the amorphous state were miscible in all of the blend compositioins studied, as evidenced by a single, composition-dependent glass-transition temperature observed for each blend composition. The variation in the glass-transition temperature was well-predicted by the Gordon- Taylor equation, with the fitting parameter being 1.37. The cold-crystallization (peak) temperature increased with increasing PBT content in the blends. The subsequent melting endotherms after melt crystallization exhibited melting point depression behavior in which the observed melting temperatures decreased with an increasing amount of minor component of the blends. LHW and NLHW were used to determine the equilibrium melting temperature of the blends. The values of the overall crystallization rate parameters for these blends were all found to increase with decreasing crystallization temperature, suggesting that these blends crystallized at low temperatures faster than that at high temperatures. As the content of PBT was further increased, these values dramatically decreased. This result is similar to that observed in the growth rate. From LH secondary nucleation theory, PTT ,PBT and their blends showed the transition temperatures between regime III and II about 194oC. Banded spherulites were observed for PTT/PBT blends. The spacing of bands of PTT increases with increasing Tc. The body of spherulite texture is more open with increasing PBT content. In addition, the boundary of spherulite is also changed with composition.

Atomistic modeling of mechanical behavior

2003 ◽  
Vol 51 (19) ◽  
pp. 5711-5742 ◽  
Author(s):  
Ju Li ◽  
Alfonso H.W. Ngan ◽  
Peter Gumbsch
Keyword(s):  
Mechanical Behavior ◽  
Atomistic Modeling

Mechanical Behavior of the Plain Weave Structure Using Energy Methods: Fabric Uniaxial Extension

1997 ◽  
Vol 67 (5) ◽  
pp. 370-378 ◽  
Author(s):  
A. Sinoimeri ◽  
J. Y. Dréan
Keyword(s):  
Mechanical Behavior ◽  
Structural Parameters ◽  
Uniaxial Extension ◽  
General Analysis ◽  
Energy Methods ◽  
Continuous Contact ◽  
Traditional Form ◽  
Plain Weave ◽  
Weave Structure

The general analysis of fabric micromechanics developed by de Jong and Postle is applied to fabric uniaxial extension with continuous contact between crossing yarns. Like the traditional form of relaxation introduced by Olofsson and improved by de Jong and Postle, another form of relaxation, defined and introduced in this analysis, is due to residual variations of transverse dimensions of the yarn. The fabric structural parameters are varied, and the changes in fabric behavior under uniaxial extension are investigated.

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