Photopolymerization-Induced Phase Separation Process of Thin Composite Films of Liquid Crystal and Polymer Fiber Networks

2003 ◽  
Vol 42 (Part 2, No. 11B) ◽  
pp. L1380-L1383 ◽  
Author(s):  
Takeshi Murashige ◽  
Hideo Fujikake ◽  
Seiichiro Ikehata ◽  
Fumio Sato
Keyword(s):  
Liquid Crystal ◽  
Phase Separation ◽  
Composite Films ◽  
Separation Process ◽  
Polymer Fiber ◽  
Fiber Networks ◽  
Phase Separation Process

An Analysis of the Photo-Polymerization Induced Phase Separation Process in Liquid Crystal/Polymer Composite Films

1999 ◽  
Vol 559 ◽  
Author(s):  
Toru Fujisawa ◽  
Masanao Hayasi ◽  
Hidetoshi Nakada ◽  
Sigeru Matumoto ◽  
Yuitiro Tani ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Phase Separation ◽  
Polymer Composite ◽  
Composite Films ◽  
Liquid Crystal Polymer ◽  
Separation Process ◽  
Photo Polymerization ◽  
Crystal Polymer ◽  
Phase Separation Process ◽  
Polymerization Induced Phase Separation

ABSTRACTWe have analyzed the micro-phase separation during photo-polymerization in the liquid crystal/polymer composite films for a variety of light-control applications. The photo-polymerization induced phase separation process is remarkably affected by the reactivity in diacrylates and the fraction volume in liquid crystals. It is presumed that the nematic transition in a liquid crystal-rich phase and the reactivity play an important role to determine the morphology.

scholarly journals Experimental Conditions to Obtain Photopolymerization Induced Phase Separation Process in Liquid Crystal-Photopolymer Composite Materials under Laser Exposure

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Manuel Ortuño ◽  
Andrés Márquez ◽  
Sergi Gallego ◽  
Inmaculada Pascual ◽  
Augusto Beléndez
Keyword(s):  
Liquid Crystal ◽  
Phase Separation ◽  
Composite Materials ◽  
Light Treatment ◽  
Separation Process ◽  
Laser Exposure ◽  
Hologram Recording ◽  
Incoherent Light ◽  
Experimental Conditions ◽  
Phase Separation Process

We analyze the experimental conditions necessary to obtain a photopolymerization induced phase separation process inside liquid crystal-photopolymer composite materials. Composites stored for 24 hours perform poorly in hologram recording but a good result is obtained if they are used recently prepared. We use a procedure combining heat and sonication to disarrange the liquid crystal structures formed during storage of the composite. We also propose incoherent light treatment after recording the hologram in order to evaluate if the phase separation evolved correctly during hologram recording.

scholarly journals A polyethersulfone–bisphenol sulfuric acid hollow fiber ultrafiltration membrane fabricated by a reverse thermally induced phase separation process

RSC Advances ◽  
2018 ◽  
Vol 8 (14) ◽  
pp. 7800-7809 ◽  
Author(s):  
Sheng-Hui Liu ◽  
Min Liu ◽  
Zhen-Liang Xu ◽  
Yong-Ming Wei
Keyword(s):  
Phase Separation ◽  
Sulfuric Acid ◽  
Hollow Fiber ◽  
Hollow Fiber Membrane ◽  
Ultrafiltration Membrane ◽  
Separation Process ◽  
Thermally Induced Phase Separation ◽  
Fiber Membrane ◽  
Thermally Induced ◽  
Phase Separation Process

A novel antifouling polyethersulfone (PES) hollow fiber membrane was modified by the addition of bisphenol sulfuric acid (BPA-PS) using a reverse thermally induced phase separation (RTIPS) process.

The effect of separation of blocks on the crystallization kinetics and phase composition of poly(butylene adipate) in multi-block thermoplastic polyurethanes

2022 ◽  
Author(s):  
Marina A. Gorbunova ◽  
Evgenii V. Komov ◽  
Leonid Yu. Grunin ◽  
Mariya S. Ivanova ◽  
Ainur F. Abukaev ◽  
...  
Keyword(s):  
Phase Composition ◽  
Phase Separation ◽  
Crystallization Kinetics ◽  
Separation Process ◽  
Degree Of Crystallinity ◽  
Thermoplastic Polyurethanes ◽  
Phase Separation Process ◽  
Hard Segments ◽  
Final Degree

Control of the phase separation process of soft and hard segments by selecting diisocyanates and by varying the thermal program allows defining the final degree of crystallinity and phase composition of TPUs.

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