journal article·2023-03Open access

A Microphase Separation Strategy for the Infrared Transparency‐Thermomechanical Property Conundrum in Sulfur‐Rich Copolymers

Jae Hyuk Hwang, Sang Hwa Kim, Woongbi Cho, Woohwa Lee, Sungmin Park, Yong Seok Kim, Jong‐Chan Lee, Kyung Jin Lee, Jeong Jae Wie, Dong‐Gyun Kim

Advanced Optical Materials· Volume 11· Issue 5

Abstract

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 ≈2.0 GPa and a high glass transition temperature (Tg) of 92.6 °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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Research context

OpenAlex topics: Synthesis and properties of polymers · Silicone and Siloxane Chemistry · Polymer composites and self-healing

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Advanced Materials Division Korea Research Institute of Chemical Technology 141 Gajeong‐ro, Yuseong‐gu Daejeon 34114 Republic of Korea

School of Chemical and Biological Engineering and Institute of Chemical Processes Seoul National University 599 Gwanak‐ro, Gwanak‐gu Seoul 08826 Republic of Korea

Department of Chemical Engineering and Applied Chemistry Chungnam National University 99 Daehak‐ro, Yuseong‐gu Daejeon 34134 Republic of Korea

Department of Organic and Nano Engineering Hanyang University 222 Wangsimni‐ro, Seongdong‐gu Seoul 04763 Republic of Korea

Advanced Materials and Chemical Engineering KRICT School, University of Science and Technology 217 Gajeong‐ro, Yuseong‐gu Daejeon 34114 Republic of Korea

Human‐Tech Convergence Program Hanyang University 222 Wangsimni‐ro, Seongdong‐gu Seoul 04763 Republic of Korea

Institute of Nano Science and Technology Hanyang University 222 Wangsimni‐ro, Seongdong‐gu Seoul 04763 Republic of Korea

Department of Chemical Engineering Hanyang University 222 Wangsimni‐ro, Seongdong‐gu Seoul 04763 Republic of Korea

The Michael M. Szwarc Polymer Research Institute State University of New York College of Environmental Science and Forestry Syracuse 13210 New York USA

Funding

Ministry of Trade, Industry and Energy · Korea Research Institute of Chemical Technology

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