Study on molecular weight-refractive index model of polymethylphenylsiloxane

被引：0

作者：

Zhong D. ^{[1
,2
]}

Jie S. ^{[1
]}

Du M. ^{[3
]}

Pan P. ^{[1
,2
]}

Shan G. ^{[1
,2
]}

机构：

[1] State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Zhejiang, Hangzhou

[2] Institute of Zhejiang University-Quzhou, Zhejiang, Quzhou

[3] Department of Polymer Science and Engineering, Zhejiang University, Zhejiang, Hangzhou

来源：

Huagong Xuebao/CIESC Journal | 2024年 / 75卷 / 01期

关键词：

group contribution; model; molecular weight; polymethylphenylsiloxane; refractive index;

D O I：

10.11949/0438-1157.20230735

中图分类号：

学科分类号：

摘要：

Polysiloxane is a special silicone material that is widely used. The refractive index is an important indicator for measuring the performance of polysiloxane. A molecular weight-refractive index model suitable for polymethylphenylsiloxanes has been established by using the group contribution method and optimized based on the free volume theory. The optimized model can effectively predict the refractive index of polymethylphenylsiloxanes from molecular weight and temperature, with a relative error within ±0.2%. The influence of molecular weight and temperature on refractive index has been explained by the optimized model: the refractive index increases with the increase of molecular weight and eventually tends to a certain value; the refractive index decreases significantly with the increase of temperature. The relevant results are significant for the design and synthesis of polysiloxanes with high refractive index. © 2024 Materials China. All rights reserved.

引用

页码：190 / 196

页数：6

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