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含氟聚酰亚胺超细微纤维膜的分子设计、制备与性能表征：高白度、高热稳定性和良好疏水性。

Molecular Design, Preparation, and Characterization of Fluoro-Containing Polyimide Ultrafine Fibrous Membranes with High Whiteness, High Thermal Stability, and Good Hydrophobicity.

机构信息

School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China.

Shandong Huaxia Shenzhou New Material Co., Ltd., Zibo 256401, China.

出版信息

Molecules. 2022 Aug 25;27(17):5447. doi: 10.3390/molecules27175447.

DOI:10.3390/molecules27175447
PMID:36080211
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9457758/
Abstract

Polymeric ultrafine fibrous membranes (UFMs) with high thermal stability and high whiteness are highly desired in modern optoelectronic applications. A series of fluoro-containing polyimide (FPI) UFMs with high whiteness, good thermal stability, and good hydrophobicity were prepared via a one-step electrospinning procedure from the organo-soluble FPI resins derived from a fluoro-containing dianhydride, 4,4'-(hexafluoroisopropylidene) diphthalic anhydride (6FDA), and various diamines containing either pendant trifluoromethyl (-CF) groups or alicyclic units in the side chains. The obtained FPI UFMs, including FPI-1 from 6FDA and 3,5-diaminobenzotrifluoride (TFMDA), FPI-2 from 6FDA and 2'-trifluoromethyl-3,4'-oxydianiline (3FODA), FPI-3 from 6FDA and 1,4-bis[(4-amino-2-trifluoromethyl)phenoxy]benzene (6FAPB), FPI-4 from 4,4'-bis[(4-amino-2-trifluoromethyl)phenoxy]biphenyl (6FBAB), and FPI-5 from 6FDA and 4'--butyl-cyclohexyl-3,5-diaminobenzoate (DABC) showed whiteness indices (WI) higher than 87.00 and optical reflectance values higher than 80% at the wavelength of 457 nm (R), respectively. The FPI-5 UFM, especially, showed the highest WI of 92.88. Meanwhile, the prepared PI UFMs exhibited good hydrophobic features with water contact angles (WCA) higher than 105°. At last, the PI UFMs exhibited good thermal stability with glass transition temperatures (T) higher than 255 °C, and the 5% weight-loss temperatures (T) higher than 510 °C in nitrogen.

摘要

具有高热稳定性和高白度的聚合超细纤维膜（UFMs）在现代光电应用中需求量很大。通过一步静电纺丝工艺，从含氟二酐、4,4'-(六氟异丙基)二邻苯二甲酸酐（6FDA）和各种含侧链取代三氟甲基（-CF）基团或脂环单元的二胺制备了一系列具有高白度、良好热稳定性和良好疏水性的含氟聚酰亚胺（FPI）UFMs。所得 FPI UFMs 包括：FPI-1 来自 6FDA 和 3,5-二氨基苯甲酰三氟（TFMDA）、FPI-2 来自 6FDA 和 2'-三氟甲基-3,4'-二氧二苯胺（3FODA）、FPI-3 来自 6FDA 和 1,4-双[(4-氨基-2-三氟甲基)苯氧基]苯（6FAPB）、FPI-4 来自 4,4'-双[(4-氨基-2-三氟甲基)苯氧基]联苯（6FBAB）和 FPI-5 来自 6FDA 和 4'--丁基-环己基-3,5-二氨基苯甲酸酯（DABC），其白度指数（WI）均高于 87.00，在 457nm（R）处的光反射率值均高于 80%。特别是 FPI-5 UFM，其 WI 高达 92.88。同时，所制备的 PI UFMs 表现出良好的疏水性，水接触角（WCA）高于 105°。最后，PI UFMs 表现出良好的热稳定性，玻璃化转变温度（T）高于 255°C，氮气中 5%重量损失温度（T）高于 510°C。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d579/9457758/24b36267a8f7/molecules-27-05447-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d579/9457758/bfe753cade92/molecules-27-05447-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d579/9457758/5487a9c101f6/molecules-27-05447-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d579/9457758/3019ef4be70d/molecules-27-05447-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d579/9457758/ba5ede28c385/molecules-27-05447-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d579/9457758/ab0ed65f94a7/molecules-27-05447-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d579/9457758/decd2fbe5f92/molecules-27-05447-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d579/9457758/f2be7220f4af/molecules-27-05447-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d579/9457758/084dce21336d/molecules-27-05447-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d579/9457758/24b36267a8f7/molecules-27-05447-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d579/9457758/bfe753cade92/molecules-27-05447-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d579/9457758/5487a9c101f6/molecules-27-05447-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d579/9457758/3019ef4be70d/molecules-27-05447-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d579/9457758/ba5ede28c385/molecules-27-05447-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d579/9457758/ab0ed65f94a7/molecules-27-05447-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d579/9457758/decd2fbe5f92/molecules-27-05447-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d579/9457758/f2be7220f4af/molecules-27-05447-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d579/9457758/084dce21336d/molecules-27-05447-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d579/9457758/24b36267a8f7/molecules-27-05447-g009.jpg

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