Balancing Optical Property and Enhancing Stability for High-Refractive Index Polythiourethane with Assistance of Cubic Thiol-Functionalized Silsesquioxanes

被引：14

作者：

Chen, Yuanyu ^{[1
,2
]}

Qin, Zongyi ^{[1
]}

Tang, Guofeng ^{[2
]}

Wei, Lijun ^{[2
]}

Du, Houlin ^{[2
]}

Du, Weiping ^{[2
]}

机构：

[1] Donghua Univ, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China

[2] Donghua Univ, Coll Mat Sci & Engn, Shanghai 201620, Peoples R China

来源：

ACS APPLIED POLYMER MATERIALS | 2021年 / 3卷 / 01期

关键词：

polythiourethane network; thiol-functionalized POSS; nanocomposite; thermal stability; mechanical properties; optical properties; HYBRID MATERIALS; NANOCOMPOSITE; POSS; TRANSPARENT; FILMS; NETWORKS; KINETICS; SULFUR;

D O I：

10.1021/acsapm.0c00917

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

To achieve a better balance between the refractive index and Abbe number, the thiol-functionalized polyhedral oligomeric silsesquioxane (POSS-SH) was incorporated as both nanoreinforcement and cross-linking reagent into high-refractive index polythiourethane (PTU). The influences of the POSS-SH on the microstructures and properties of PTU were investigated. It is found that all the nanocomposites exhibited a dense network structure and high structural homogeneity even at the POSS-SH loading up to 10 wt %. Besides great improvements in the thermal stability and mechanical property, the nanocomposite containing 1.5 wt % POSS-SH revealed a slight reduction in the refractive index from 1.6568 for neat PTU to 1.6557 but a significant increase in the Abbe number from 28 to 35, accompanied by excellent optical transparency. These results indicate that the covalent incorporation of bifunctional POSS-SH into the PTU network will be helpful for the rational design of advanced optical and optoelectronic materials.

引用

页码：153 / 161

页数：9