Journal
RSC ADVANCES
Volume 11, Issue 32, Pages 19656-19665Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1ra02184b
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Funding
- Fundamental Research Funds for the Central Universities [JKD 01211701]
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The introduction of side aromatic groups in silicon-containing arylacetylene resins can effectively improve the processability of the resins, reduce crystallinities, while maintaining high modulus and good heat resistance.
Silicon-containing arylacetylene resins with rigid conjugated structures in the main chain often exhibit poor processability. A strategy of improving the processability by destroying the molecular structure symmetry using side aromatic groups was proposed, and the effects of the side groups was further explored. Two novel structural resins with side aromatic phenyl and phenylacetylene groups (PODSA-2P-MM and PODSA-2E-MM) were synthesized by Grignard reaction. The side aromatic groups strongly interfere with the regular arrangement of the main chains, and the crystallinities of the resins decrease as compared with PODSA-MM resin without side aromatic groups. Due to the influence of the side aromatic groups, the novel resins exhibit good processability, low exothermic enthalpy, high modulus and good heat resistance.
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