Article: An in-process ultrasonic approach to investigating the relaxation of orientation and disorientation of polymer melts.(Technical report)

Article: The use of birefringence for predicting the stiffness of injection molded polycarbonate discs.
Polymer Engineering and Science;  October 1, 1998 ;     700+ words ......morphology is the distribution of molecular orientation. The molecular orientation arises when chain segments showing...cooling build up a distribution of molecular orientation in that direction (1-3). The flow...

Article: Characterization of the Orientation in Synthetic Polymer Sheets Using Far-Infrared Radiation.(Brief Article)
Polymer Engineering and Science;  December 1, 1999 ;     700+ words ...Molecular orientation and mass distribution have...discussed. INTRODUCTION Increased molecular orientation can significantly enhance some...weight) and the local fiber or molecular orientation. According to Kissin [2], orientation...

Article: Studies from University of Tokyo have provided new information about chemistry.
Electronics Newsweekly;  September 24, 2008 ;     217 words ......Simultaneous measurement of molecular orientation and current as a function...voltage has been conducted. Molecular orientation was measured using the...it was found that the molecular orientation change assists the hysteretic...

Article: Polydomain model predictions of molecular orientation in isothermal channel flows of thermotropic liquid crystalline polymers.(Technical report)
Polymer Engineering and Science;  November 1, 2008 ;     700+ words ......impact of processing on the overall molecular orientation state. Although there has been...against experimental data on LCP molecular orientation during flow or processing are extremely...LCP moldings depend critically on molecular orientation induced during processing (3...

Article: An Experimental Technique for the Characterization of Molecular Orientation Through the Thickness of Plastic Products.
Polymer Engineering and Science;  October 1, 1999 ;     700+ words ...INTRODUCTION Molecular orientation in plastic products can...Such a variation in the molecular orientation in the thickness direction...products. For many years, the molecular orientation across plastic products...

Article: Research findings from Cornell University update understanding of polymer research.
Nanotechnology Weekly;  September 8, 2008 ;     255 words ......indicates significant molecular orientation. Because electrospinning...large strain rate, this molecular orientation is expected. We present quantitative measurements of molecular orientation in a single nanofiber...

Article: Investigation of processing-structure-properties relationships in polyethylene blown films.
Polymer Engineering and Science;  October 15, 1994 ;     700+ words ......primary molecular parameters, the molecular orientation imparted during blown and cast...film structure (morphology and molecular orientation) on the mechanical and thermal...properties. In addition, differences in molecular orientation in the films were studied using...

Article: Studies from Nagoya University describe new findings in applied physics.
Physics Week;  March 17, 2009 ;     462 words ...The molecular orientation and electronic structure...theory calculations. The molecular orientation and the electronic structures...structure but may also affect molecular orientation. Kanai and colleagues published...

Article: Simple Shear Plastic Deformation Behavior of Polycarbonate Plate Due to the Equal Channel Angular Extrusion Process. I: Finite Element Methods Modeling.(Brief Article)
Polymer Engineering and Science;  December 1, 1999 ;     700+ words ......a high level of nearly uniform molecular orientation across the extruded PC plate. As...a feasible solution to control molecular orientation and/or microstructural anisotropy...solid state via ECAE, significant molecular orientation takes place as a result of the...

Article: New applied physics findings from Humboldt University described.
Physics Week;  September 30, 2008 ;     369 words ......order to correlate the molecular orientation of organic thin films...electronic structure and molecular orientation of vacuum sublimed thin...growth models (including molecular orientation and conformation) of...

Article: Research reports on physics from University of Tokyo provide new insights.
Physics Week;  August 26, 2008 ;     237 words ......We demonstrate laser-field-free molecular orientation with the combination of a moderate...sulfide) molecules as a sample. Molecular orientation is adiabatically created in the...Review Letters (Laser-field-free molecular orientation. Physical Review Letters, 2008...

Article: Real-time monitoring of fluorescence anisotropy and temperature during processing of biaxially stretched polypropylene film (1).
Polymer Engineering and Science;  April 1, 2004 ;     700+ words ......the film are determined by the molecular orientation that is created in the film by...that can be adjusted to control molecular orientation are stretch ratios, strain rates...Laboratory methods to characterize molecular orientation of the film product, such as X...

Article: Reports outline physics study findings from K. Kaneyama and colleagues.
Physics Week;  August 18, 2008 ;     299 words ......As a result, the aggregation or molecular orientation of pyrene molecules in the films...did not depend on the viscosity. Molecular orientation was formed more easily in the film...of Applied Physics (A study of molecular orientation effect in photoresist films. Japanese...

Article: Prediction of the tensile impact behavior of injection molding samples from quasi-static data.
Polymer Engineering and Science;  August 1, 1999 ;     700+ words ......layers present a high degree of molecular orientation, as the polymer crystallizes under...ratio (6, 8); ii) the level of molecular orientation of the skin (9, 10), and iii) the...structural features. The final degree of molecular orientation of the skin is the combined result...