The role of intra- and intermolecular reactions in synthesis of paired polymers

Korshak, V.V.; Suprun, A.P.; Vointseva, I.I.; Yevstipeyeva, I.I.; Slonimskii, G.L.; Askadskii, А.A.

doi:10.1016/0032-3950(87)90389-3

Cited by 4 publications

(2 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The stress‐optical coefficients are correlated with the polymer structure according to the following expression [ 3,35–37 ]

\begin{matrix} C_{σ} = \frac{\sum_{i} C_{i}}{V_{W}} + Π \end{matrix}

where V w = van der Waals volume of structural unit; Π = universal parameter = 0.354 × 10 −3 (MPa) −1 ; ∑ i C i = molar optical sensitivity function, an additive molar quantity, for which increments are given in the Supporting Information.…”

Section: Figurementioning

confidence: 99%

The Influences of Sulfoxide Electron Traps in Transparent Polyimides with Low Retardation, Yellow Index, and CTE

Jiang

Shen

Wang

et al. 2021

Macro Materials & Eng

View full text Add to dashboard Cite

Due to the development of dynamic flexible organic light‐emitting diode displays, colorless polyimides (CPI) as the supporting or protecting optical films, are facing significant challenges due to the requirements of optical, mechanical, thermal, and chemical properties. Typical CPIs are derived from TFDB (2,2‐bis(trifluoro‐methyl)‐4,4′‐diaminobiphenyl)/6FDA (4,4′‐(hexafluoroisopropylidene)diphthalic anhydride), which still need to be improved in both dimensional stability and optical performance. In this communication, a strong electron acceptor group, the sulfoxide bond, is first introduced into the TFDB block of CPI chains. Based on this introduction, the distribution of the electron cloud in the polymer chain is reconstructed under the strongly pulling electron effect, and the spatial conformation of the polymer chain is also affected by the rigid and twisted sulfoxide group. The influences on CPI's optical properties, especially the refractive index and the retardation, are studied and discussed in detail by experimental results and theoretical calculations. It is shown that the CPI with the sulfoxide group exhibits higher optical transparency, lower yellow index, phase retardation and coefficient of thermal expansion, which is an ideal material for CPI optical films.

show abstract

“…The stress‐optical coefficients are correlated with the polymer structure according to the following expression [ 3,35–37 ]

\begin{matrix} C_{σ} = \frac{\sum_{i} C_{i}}{V_{W}} + Π \end{matrix}

Section: Figurementioning

confidence: 99%

The Influences of Sulfoxide Electron Traps in Transparent Polyimides with Low Retardation, Yellow Index, and CTE

Jiang

Shen

Wang

et al. 2021

Macro Materials & Eng

View full text Add to dashboard Cite

show abstract

“…In the latest stage (polymer D), the maximum completely disappears. 76 Most likely, microaggregation of PS and PTCB fragments occurs on solution casting; however, the size of domains built of unlike fragments is small and therefore the films retain transparency.…”

Section: Formation Of Chemical Bonds Between Components Of Polymer Bl...mentioning

confidence: 99%

The effect of strong intermolecular and chemical interactions on the compatibility of polymers

Askadskii¹

1999

Russ. Chem. Rev.

View full text Add to dashboard Cite

Paired polymers

Аскадский

Vointseva

1987

Polymer Science U.S.S.R.

View full text Add to dashboard Cite

The role of intra- and intermolecular reactions in synthesis of paired polymers

Cited by 4 publications

References 2 publications

The Influences of Sulfoxide Electron Traps in Transparent Polyimides with Low Retardation, Yellow Index, and CTE

The Influences of Sulfoxide Electron Traps in Transparent Polyimides with Low Retardation, Yellow Index, and CTE

The effect of strong intermolecular and chemical interactions on the compatibility of polymers

Paired polymers

Contact Info

Product

Resources

About