Effect of molecular weight on the static electro-optic properties of polysiloxane liquid crystal polymers
Joint Authors
al-Ammar, Khalid
Jawad, Zahra Adil
Source
Journal of Babylon University : Journal of Applied and Pure Sciences
Issue
Vol. 22, Issue 6 (30 Dec. 2014), pp.1820-1828, 9 p.
Publisher
Publication Date
2014-12-30
Country of Publication
Iraq
No. of Pages
9
Main Subjects
Topics
Abstract AR
هذه الدراسة ركزت على الخواص لمجموعة أو سلسلة من البوليمرات التي تمتلك أوزان جزيئية مختلفة و مبنية على عمود فقري لبوليمر سايلوكسين.
وجدت أن الأوزان الجزيئية المنخفضة تقلل من درجة حرارة انتقال الطور و في النهاية تسبب عدم استقرار في الطور النيماتي, و تأثير انخفاض الوزن الجزيئي للبوليمر تقلل فولتية العتبة.
و هذا من الممكن أن يكون له علاقة بزيادة ثابت المرونة للبوليمر, وجد إن هناك ارتباط قوي بين الجانب الميزوجيني في البوليمر و لذلك فإن مرونة البوليمر تلعب دور في الخواص الكهروبصرية.
Abstract EN
This study focused on the electro - optic properties of a total or a series of polymers that have different molecular weights and are based on the polymer backbone.
It is found that low molecular weights reduces the transition temperature and eventually leads to a destabilisation of the nematic phase, the effect of reducing the molecular weight of the polymer is to lower the observed threshold voltage.
This may be related to an increase in the intrinsic elastic constant of the liquid crystal polymers.
It is found that there is a strong coupling between the mesogenic side chain groups and the polymer chain and that the elasticity of the polymer chain plays a strong role in the static electro–optic properties.
American Psychological Association (APA)
al-Ammar, Khalid& Jawad, Zahra Adil. 2014. Effect of molecular weight on the static electro-optic properties of polysiloxane liquid crystal polymers. Journal of Babylon University : Journal of Applied and Pure Sciences،Vol. 22, no. 6, pp.1820-1828.
https://search.emarefa.net/detail/BIM-388783
Modern Language Association (MLA)
al-Ammar, Khalid& Jawad, Zahra Adil. Effect of molecular weight on the static electro-optic properties of polysiloxane liquid crystal polymers. Journal of Babylon University : Journal of Applied and Pure Sciences Vol. 22, no. 6 (2014), pp.1820-1828.
https://search.emarefa.net/detail/BIM-388783
American Medical Association (AMA)
al-Ammar, Khalid& Jawad, Zahra Adil. Effect of molecular weight on the static electro-optic properties of polysiloxane liquid crystal polymers. Journal of Babylon University : Journal of Applied and Pure Sciences. 2014. Vol. 22, no. 6, pp.1820-1828.
https://search.emarefa.net/detail/BIM-388783
Data Type
Journal Articles
Language
English
Notes
Text in English ; abstracts in English and Arabic.
Record ID
BIM-388783