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- Title
The Electro-Optical Properties and Adhesion Strength of Epoxy-Polymercaptan-Based Polymer Dispersed Liquid Crystal Films.
- Authors
Chen, Gang; Hu, Wei; Zhou, Le; Zhang, Huimin; Wang, Ling; Zhang, Cuihong; Sun, Jian; Zhang, Lanying; Yuan, Xiaotao; Zhu, Siquan
- Abstract
Polymer dispersed liquid crystal (PDLC) films were prepared by thermal polymerization-induced phase separation in epoxy/polymercaptan/liquid crystal (LC)/accelerator mixtures. The effects of the concentration of LC and accelerator, the curing temperature, and the structure of epoxy monomer on the electro-optical (E-O) properties and adhesion strength of the PDLC films were studied systematically via E-O, peel strength, DSC, IR, and gel measurements. It showed that different polymer structures and the properties of the polymer can be obtained by changing the compositions and the curing temperature, which had significant impacts on the E-O properties of the PDLC films. Meanwhile, the polymer matrix with high glass-transition temperature (Tg) and small pore size will improve the adhesion strength of the PDLC film, and these kinds of epoxy-polymercaptan-based PDLC films have better performance than traditional acrylate-based PDLC in the aspect of the adhesion strength. This work may provide some inspiration in preparing epoxy-polymercaptan-based PDLC films, which both have excellent E-O performance and good adhesion strength, towards roll-to-roll processes and large-scale flexible applications.
- Subjects
LIQUID crystal films; LIQUID crystals; POLYMER structure; PRESSURE-sensitive adhesives; ACRYLATES; PHASE separation; EPOXY resins; POLYMER liquid crystals
- Publication
Crystals (2073-4352), 2021, Vol 11, Issue 6, p576
- ISSN
2073-4352
- Publication type
Article
- DOI
10.3390/cryst11060576