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Negrell C, Frénéhard O, Sonnier R, Dumazert L, Briffaud T, Flat JJ. Self-extinguishing bio-based polyamides. Polym Degrad Stab 2016. [DOI: 10.1016/j.polymdegradstab.2016.09.022] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Feng J, He F, Yang Z, Yao J. Differential study of the biological degradation of polyamide-imides based on the amino acids. Polym Degrad Stab 2016. [DOI: 10.1016/j.polymdegradstab.2016.04.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Sadhasivam B, Muthusamy S. Synthesis and characterization of optically active polyimides and their octa(aminophenyl)silsesquioxane nanocomposites. HIGH PERFORM POLYM 2015. [DOI: 10.1177/0954008315591021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
New optically active diamine (3,5-diaminophenyl)((R)-3,4-dihydro-1-phenylisoquinoline-2(1H)-yl)methanone was successfully prepared. Optically active polyimides (PIs) were synthesized by reacting the prepared diamine with the aromatic tetracarboxylic dianhydrides, namely, 3,3′,4,4′-benzophenone tetracarboxylic dianhydride/pyromelltic dianhydride by thermal imidization method and characterized using Fourier transform infrared and nuclear magnetic resonance spectral techniques. Additionally, PI nanocomposites were also prepared by incorporating amino-functionalized polyhedral oligomeric silsesquioxane named as octa(aminophenyl)silsesquioxane (OAPS). The cut-off wavelengths of PIs and their nanocomposites were found to be less than 350 nm, indicating that the PIs are transparent. The PIs and their nanocomposites were found to have glass transition temperature between 204°C and 269°C (differential scanning calorimetric analysis). The 10% weight loss temperature and char yield were found to be 319.5–420.3°C and 26.3–62.7%, respectively. The PIs were found to be amorphous as indicated by X-ray analysis. The scanning electron microscopic images of the nanocomposites also reveal uniform distribution of the nanoparticles in the nanocomposite. PIs and PI/OAPS nanocomposites were found to have low dielectric constant in the range of 2.59–3.36.
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Affiliation(s)
- Balaji Sadhasivam
- Department of Chemistry, Anna University, Chennai, Tamil Nadu, India
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Vakili MR, Zahmatkesh S, Panahiyan MJ, Jafarizadeh T. Poly(amide-hydrazide-imide)s containing L-aspartic acid: synthesis, characterization, and their applications in removal of heavy metal ions. Des Monomers Polym 2015. [DOI: 10.1080/15685551.2014.999463] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
Affiliation(s)
| | - Saeed Zahmatkesh
- Department of Science, Payame Noor University, 19395-4697 Tehran, I.R. Iran
| | | | - Tahereh Jafarizadeh
- Department of Chemistry, Firoozabad Branch, Islamic Azad University, Fars, Iran
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Vakili MR, Rahneshin N. Synthesis and characterization of novel stimuli-responsive hydrogels based on starch and L-aspartic acid. Carbohydr Polym 2013; 98:1624-30. [DOI: 10.1016/j.carbpol.2013.08.016] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2012] [Revised: 07/20/2013] [Accepted: 08/08/2013] [Indexed: 11/30/2022]
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