N-Alkyl PPTA: Preparation and Characterization
| Autor: | Jianjun Zhou, Cui Qing Teng, Muhuo Yu, Yu Ma, Liu Jing, Hai Juan Kong, Hong Peng Zhong, Rui Zhang |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
chemistry.chemical_classification
Materials science Metalation Dimethyl sulfoxide Potassium General Engineering Inherent viscosity chemistry.chemical_element Characterization (materials science) chemistry.chemical_compound chemistry Polymer chemistry lipids (amino acids peptides and proteins) Solubility Fourier transform infrared spectroscopy Alkyl |
| Zdroj: | Advanced Materials Research. :105-109 |
| ISSN: | 1662-8985 |
| DOI: | 10.4028/www.scientific.net/amr.554-556.105 |
| Popis: | N-alkyl poly(p-phenylene terephthalamide)s (PPTA) is synthesized from PPTA and bromoalkane via metalation process in a solution of potassium methylsulfinylcarbanion in dimethyl sulfoxide. The modified PPTAs have been dissolved in conventional solvents, such as THF and CHCl3. The effects of substituted alkyl, substitution degree and inherent viscosity of PPTA on the solubility of N-alkyl PPTA were discussed. The substitution degree is calculated by FTIR and NMR. The molecular weight and distribution of N-alkyl PPTA has been obtained by GPC. The thermal properties are also discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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