Thermomechanical characterization of thermoplastic polyimides containing 4,4'‐methylenebis(2,6‐dimethylaniline) and polyetherdiamines

Thermomechanical characterization of thermoplastic polyimides containing 4,4'‐methylenebis(2,6‐dimethylaniline) and polyetherdiamines
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含4,4-亚甲基双(2,6-二甲基苯胺)和聚醚二胺的热塑性聚酰亚胺的热机械表征

DOI:
10.1002/pen.24893
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发表时间:
2018
影响因子:
3.2
通讯作者:
Harmon, Julie P.
Harmon, Julie P.
中科院分区:
工程技术4区
文献类型:
--
作者:
Rivera Nicholls, Alejandro;Kull, Ken;Cerrato, Cole;Craft, Garrett;Diry, Jean‐Baptiste;Renoir, Emilie;Perez, Yesenia;Harmon, Julie P.

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在这项工作中,我们通过将芳香族二胺单体与亚甲基连接体4,4 '-亚甲基双(2,6-二甲基苯胺)(MBDMA)结合来合成聚酰亚胺,以使主链沿着脂肪族聚醚二胺主链连接体以降低刚性。我们设计的聚合物表现出的热性能之间的传统芳香族聚酰亚胺和聚合物与全脂肪族醚二胺链接。通过动态力学分析和差示扫描量热法,表明控制芳香族MBDMA(4,4 '-亚甲基双(2,6-二甲基苯胺))的摩尔比和脂肪族聚醚二胺的组成和尺寸可以用于调节玻璃化转变。通过GPC、FTIR、NMR、热机械分析、量热分析和显微硬度测试对聚合物进行了表征。Polym.工程索引,59:221-232,2019.© 2018塑料工程师协会
In this work, we synthesized polyimides by incorporating an aromatic diamine monomer with a methylene linker, 4,4'‐methylenebis(2,6‐dimethylaniline) (MBDMA), to make a robust main chain along with aliphatic polyetherdiamine backbone linkers to reduce rigidity. We designed the polymers to exhibit thermal properties in between those of conventional aromatic polyimides and polymers with wholly aliphatic ether diamine links. Through dynamic mechanical analysis and differential scanning calorimetry, it is shown that control of the molar ratios of the aromatic MBDMA (4,4'‐methylenebis(2,6‐dimethylaniline)) and the composition and size of the aliphatic polyetherdiamine can be used to tune the glass transition. The polymers were characterized by GPC, FTIR, NMR, thermomechanical and calorimetric analysis, and microhardness testing. POLYM. ENG. SCI., 59:221–232, 2019. © 2018 Society of Plastics Engineers
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