Polyamides Containing Thiadiazole Units: Synthesis and Optical Properties

Zhi-min Li; Gang Zhang; Dong-sheng Li; Jie Yang

doi:10.1007/s10118-014-1407-z

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Polyamides Containing Thiadiazole Units: Synthesis and Optical Properties

Updated：2021-06-21

- Polyamides Containing Thiadiazole Units: Synthesis and Optical Properties
- Chinese Journal of Polymer Science Vol. 32, Issue 3, Pages: 292-304(2014)
- Affiliations：
  
  a.College of Polymer Materials Science and Engineering of Sichuan University, Chengdu 610065, China
  b.Institute of Materials Science & Technology, Analytical & Testing Center, Sichuan University Chengdu 610064, China
  c.State Key Laboratory of Polymer Materials Engineering (Sichuan University), Chengdu 610065, China
- Author bio：
  
  **Gang Zhang (张刚), E-mail: gangzhang@scu.edu.cn
  Jie Yang (杨杰), E-mail: ppsf@scu.edu.cn
- Funds：
- DOI：10.1007/s10118-014-1407-z
  CLC：
- Received：17 April 2013，
  
  Revised：2013-06-12，
  
  Accepted：17 June 2013，
  
  Published：2014-03
- Accepted：
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Zhi-min Li, Gang Zhang, Dong-sheng Li, et al. Polyamides Containing Thiadiazole Units: Synthesis and Optical Properties[J]. Chinese Journal of Polymer Science, 2014, 32(3): 292-304.
DOI：

Zhi-min Li, Gang Zhang, Dong-sheng Li, et al. Polyamides Containing Thiadiazole Units: Synthesis and Optical Properties[J]. Chinese Journal of Polymer Science, 2014, 32(3): 292-304. DOI： 10.1007/s10118-014-1407-z.

摘要

Abstract

Highly refractive and transparent polyamides containing thiadiazole units have been developed. These polymers were prepared by a polycondensation reaction of 4

4′-(1

4-thiadiazole-2

5-thio) bis(methylene) dibenzoyl chloride (TDTBM-DC) and diamine which contained thioether (—S—) and sulfone units. They showed good thermal stabilities such as a relatively high glass transition temperature of 206−233 ℃ and a 5% weight-loss temperature (

) of 376−395 ℃. The optical transmittance of the polymer at 450 nm is higher than 83%. The heterocycle units and plural —S— linkages provide the polymer with a high refractive index of 1.716−1.725 at 633 nm and a low birefringence of 0.003−0.004. Also they showed improved solubility in polar aprotic solvents and could form moderate strength films with tensile strength of 72.8−83.1 MPa and storage modulus of 1.0−1.8 GPa (at 200 ℃).

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