接枝共聚物

Abstract\n\t\t\t\t\n\t\t\t\t\tThe syntheses of siloxane-grafted poly(amide-imide) and polyamide were carried out by a macromonomer method, in order to develop a highly permeable and durable membrane material for pervaporation. A novel compound, 3,5-bis(4-aminophenoxy)benzyloxypropyl-terminated polydimethylsiloxane (\n\t\t\t\t\t\tBAPB-\n\t\t\t\t\t\tPDMS), was synthesized as a macromonomer.

Polystyrene-graft-polydimethylsiloxane (PS-g-PDMS) copolymers with different PDMS content were syn-thesized by the radical bulk copolymerization of PDMS macromonomer and styrene. The copolymers were charac-terized by Fourier transform infrared (FT-IR),1H-nuclear magnetic resonance (NMR), thermogravimetric analysis (TGA), dynamic mechanical analysis (DMA), transmission electron microscopy (TEM) and the mechanical properties of the copolymers were also carried out.

在广泛的室温场景下，固态聚合物基导体中的快速锂离子( Li )传输是绝望的需求，但仍然是一个严峻的挑战。在此，我们设计了一类基于含有短聚环氧乙烷( PEO )和聚二甲基硅氧烷( PDMS )侧链的混合接枝嵌段共聚物( mGBCPs )的固态电解质。PEO和PDMS的强不混溶性导致了有序相分离纳米结构的形成。在不同体积分数的PEO / PDMS嵌段中观察到了不同的形貌，包括双回旋体、六角开孔的片层、六角填充的和片层。通过改变PEO侧链长度，与自由PEO链共混，考察PEO的链迁移率对Li输运的影响。我们证明，将mGBCP与游离的无定形PEO链物理共混可显著促进Li的导电，制备了室温电导率可达2.0  × 10 - 4   S / cm的固态电解质。