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模块化制备的分段氟化硅氧烷及其依赖于异常微观结构的流动行为。

Modularly prepared segmented fluorinated silicones and their anomalous microstructure dependent flow behavior.

作者信息

Migliaccio Analise C, Weeks Nathan J, Iacono Scott T

机构信息

Department of Chemistry, Chemistry Research Center, Laboratories for Advanced Materials, United States Air Force Academy Colorado Springs Colorado 80840 USA

出版信息

RSC Adv. 2025 Jun 24;15(27):21429-21438. doi: 10.1039/d5ra03087k. eCollection 2025 Jun 23.

DOI:10.1039/d5ra03087k
PMID:40556699
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12186765/
Abstract

Octafluorocyclopentene was used as a coupling reagent by undergoing a series of efficient and regio-controlled addition-elimination reactions with eugenol and alkyldiols/bisphenols to prepare terminally unsaturated monomers. Structural characterization revealed these high molecular weight monomers can be obtained with high purity and in multi-gram quantities with minimal purification. The eugenolic-based monomers underwent Pt-catalyzed hydrosilylations with hydride-terminated polydimethylsilane oligomers to prepare a versatile pool of segmented fluorosilicones. Polymer characterization included molecular weight determination, calorimetric studies, thermo-gravimetric analysis, and rheology. Of particular interest as next-generation lubricants for in-space applications, these fluorosilicones possess adaptable structure-property relationships by nature of the segment substitution.

摘要

八氟环戊烯用作偶联试剂，通过与丁香酚和烷基二醇/双酚进行一系列高效且区域可控的加成-消除反应来制备末端不饱和单体。结构表征表明，这些高分子量单体能够以高纯度且无需过多纯化即可多克量获得。基于丁香酚的单体与氢封端的聚二甲基硅烷低聚物进行铂催化的硅氢化反应，以制备多种类型的嵌段氟硅氧烷。聚合物表征包括分子量测定、量热研究、热重分析和流变学。作为下一代空间应用润滑剂，这些氟硅氧烷因其链段取代的性质而具有适应性的结构-性能关系，特别令人关注。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4e74/12186765/b5ff0230f5bd/d5ra03087k-f3.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4e74/12186765/b5ff0230f5bd/d5ra03087k-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4e74/12186765/9005ec44d2ae/d5ra03087k-s1.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4e74/12186765/177bfc4e5e77/d5ra03087k-s4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4e74/12186765/ef7c6b4dd5c9/d5ra03087k-s5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4e74/12186765/1a04f260e479/d5ra03087k-f2.jpg
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本文引用的文献

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