Investigation of a rheo-optical method for determining the in-situ molecular orientation behavior in stretching films under biaxial deformation

2011 ◽  
Vol 30 (8) ◽  
pp. 893-898 ◽  
Author(s):  
Shingo Yoshida ◽  
Takayuki Sawada ◽  
Takanobu Kawamura ◽  
Koh-hei Nitta
Keyword(s):  
Optical Method ◽  
Molecular Orientation ◽  
Orientation Behavior ◽  
Biaxial Deformation

Molecular orientation behavior of mesomorphic isotactic polypropylene under uniaxial and biaxial deformation

2010 ◽  
Vol 51 (2) ◽  
pp. 225-231 ◽  
Author(s):  
Shingo Yoshida ◽  
Kazuomi Ishii ◽  
Takanobu Kawamura ◽  
Koh-Hei Nitta
Keyword(s):  
Isotactic Polypropylene ◽  
Molecular Orientation ◽  
Orientation Behavior ◽  
Biaxial Deformation

Measurement of molecular orientation using longitudinal ultrasound and its first application in in-situ characterization

Polymer ◽  
2020 ◽  
Vol 187 ◽  
pp. 122092 ◽  
Author(s):  
Peng Zhao ◽  
Neng Xia ◽  
Jianfeng Zhang ◽  
Jun Xie ◽  
Chengqian Zhang ◽  
...  
Keyword(s):  
Molecular Orientation ◽  
In Situ Characterization

scholarly journals The Molecular Orientation Behavior and the Crystallinity of CO2 Laser-Heated Drawn Poly(ethylene terephthalate) Fiber

2003 ◽  
Vol 59 (6) ◽  
pp. 235-238 ◽  
Author(s):  
Toshifumi Ikaga ◽  
Yutaka Ohkoshi ◽  
Yasuo Gotoh ◽  
Masanobu Nagura ◽  
Yutaka Kawahara
Keyword(s):  
Co2 Laser ◽  
Molecular Orientation ◽  
Ethylene Terephthalate ◽  
Orientation Behavior ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene ◽  
Laser Heated

correlations of mechanical properties and microstructural parameters in annealed drawn film of liquid crystalline polymer in situ reinforced PP

e-Polymers ◽  
2011 ◽  
Vol 11 (1) ◽  
Author(s):  
Sayant Saengsuwan
Keyword(s):  
Mechanical Properties ◽  
Annealing Time ◽  
Crystalline Phase ◽  
Molecular Orientation ◽  
Liquid Crystalline Polymer ◽  
Liquid Crystalline ◽  
Crystalline Polymer ◽  
Relative Level ◽  
Microstructural Parameters

AbstractDrawn composite thin film based on thermotropic liquid crystalline polymer (TLCP) and polypropylene (PP) was annealed at 130 °C at different times. The influence of annealing time on microstructural and mechanical properties of the composite film has been studied. The correlation in mechanical properties and their microstructural parameters has also been investigated. X-Ray diffraction results reveal that the smectic mesophase transforms progressively into the monoclinic phase as annealing time is increased. Consequently, the true crystallinity (Xc), crystal thickness (L) as well as relative level of molecular orientation of PP crystalline phase in the annealed TLCP/PP films are increased significantly. Also, the TLCP fibrils have no influence on the microstructure of PP crystalline phase. The apparent crystallinity (Xc,a) of PP phase evaluated by DSC also increase significantly with annealing time. As a result, the increases of these microstructural parameters coupled with the reinforcement of TLCP fibrils could be contributed directly to the remarkable enhancement of mechanical properties of the annealed TLCP/PP film in both machine (MD) and transverse (TD) directions. The correlation of moduli with microstructural parameters (Xc, Xc,a and L) exhibits nonlinear relations. However, the relative level of molecular orientation is a more suitable parameter to correlate with the improvement of mechanical properties of the annealed TLCP/PP film. Finally, this work presents that the mechanical properties of the TLCP in situ reinforced thermoplastics can be significantly enhanced via a simple thermal treatment.

Study of Field-Induced Evolution of the Domain Geometry in Lithium Niobate and Lithium Tantalate Single Crystals by In Situ Optical Method

2008 ◽  
Vol 374 (1) ◽  
pp. 78-87 ◽  
Author(s):  
V. Ya. Shur ◽  
I. S. Baturin ◽  
M. S. Nebogatikov ◽  
S. A. Negashev ◽  
A. I. Lobov ◽  
...  
Keyword(s):  
Lithium Niobate ◽  
Single Crystals ◽  
Optical Method ◽  
Lithium Tantalate

Orientation behavior and in-situ photopolymerization of two mesogenic acrylates

1998 ◽  
Author(s):  
V. L. Khodzhaeva ◽  
I. I. Konstantinov ◽  
P. L. Magagnini ◽  
M. Paci ◽  
E. L. Tassi
Keyword(s):  
Orientation Behavior

scholarly journals Molecular Orientation Behavior with Drawing of Biaxially Stretched Film

Seikei-Kakou ◽  
1995 ◽  
Vol 7 (11) ◽  
pp. 729-735
Author(s):  
Takahiro NIWA ◽  
Yasunobu ZUSHI ◽  
Sadao HIBI ◽  
Shinichi NAGATA ◽  
Satoru TANI
Keyword(s):  
Molecular Orientation ◽  
Orientation Behavior
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