A Microphase Separation Strategy for the Infrared Transparency-Thermomechanical Property Conundrum in Sulfur-Rich Copolymers
- Authors
- Hwang, Jae Hyuk; Kim, Sang Hwa; Cho, Woongbi; Lee, Woohwa; Park, Sungmin; Kim, Yong Seok; Lee, Jong-Chan; Lee, Kyung Jin; Wie, Jeong Jae; Kim, Dong-Gyun
- Issue Date
- Mar-2023
- Publisher
- WILEY-V C H VERLAG GMBH
- Keywords
- infrared imaging; microphase separation; sulfur-rich copolymers; thermomechanical property
- Citation
- ADVANCED OPTICAL MATERIALS, v.11, no.5, pp.1 - 9
- Indexed
- SCIE
SCOPUS
- Journal Title
- ADVANCED OPTICAL MATERIALS
- Volume
- 11
- Number
- 5
- Start Page
- 1
- End Page
- 9
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/185079
- DOI
- 10.1002/adom.202202432
- Abstract
- With intrinsic optical and dynamic properties of polysulfide chains, inverse vulcanized copolymers have demonstrated immense potential for infrared (IR) optical applications. However, preparing highly IR-transparent sulfur-rich copolymers without sacrificing their thermomechanical properties remains challenging. To overcome the trade-off relationship between IR optical and thermomechanical properties, an in situ microphase separation strategy for the inverse vulcanization of elemental sulfur utilizing self-crosslinkable 1,3,5-trivinylbenzene (TVB) is presented. Even with 80 wt% sulfur content, the microphase-separated TVB-rich domain self-reinforces the copolymer with a noteworthy modulus of approximate to 2.0 GPa and a high glass transition temperature (T-g) of 92.6 degrees C, while still exhibiting outstanding IR optical properties. This work is expected to provide insights into the fundamental structure-property relationships of sulfur-rich copolymers and pave the way for various practical applications.
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