期刊
POLYMER INTERNATIONAL
卷 72, 期 5, 页码 532-540出版社
WILEY
DOI: 10.1002/pi.6500
关键词
high-performance polymer; poly(benzimidazole sulfone)s; benzimidazolidone; dielectric constant
A series of poly(benzimidazole sulfone)s (PBSs) and poly(benzimidazole ketone)s (PBKs) containing 5,6-dimethoxy-1,3-dihydro-2H-benzo[d]imidazol-2-one (MBIO) were synthesized. The polymers showed good solubility in common aprotic polar solvents due to the introduction of methoxy. They exhibited high glass transition temperature, low dielectric constants, low water absorption, and potential utility for the microelectronics industry.
A series of poly(benzimidazole sulfone)s (PBSs) and poly(benzimidazole ketone)s (PBKs) containing 5,6-dimethoxy-1,3-dihydro-2H-benzo[d]imidazol-2-one (MBIO) have been synthesized by C-N/C-O coupling with different percentages of three other diphenol monomers under similar conditions. The structure of PBS-MBs and PBK-MBs was confirmed using H-1 NMR and Fourier transform infrared spectroscopies, and X-ray diffraction data revealed that all the polymers are in an amorphous state. Due to the introduction of methoxy, the polymers were more soluble in common aprotic polar solvents. The intrinsic viscosity of the synthesized polymers was measured with an Ubbelohde viscometer, ranging from 0.38 to 1.35 dL g(-1). The MBIO-based polymers have a remarkably good thermal stability with a high glass transition temperature of up to 305.1 ?. Furthermore, the wavelength of maximum fluorescence emission from homopolymers is around 414 nm with emission of blue light in N-methyl-2-pyrrolidone solution (1 mg L-1) and around 530 nm in films. They also showed low dielectric constants (kappa = 2.60-3.10 at 1 MHz) and low water absorption (0.22-0.58%). It was encouraging to discover that these polymers have potential utility for the microelectronics industry, in which good solubility facilitates processing and molding, excellent thermal stability allows devices to be used under harsh conditions, low water absorption prevents device expansion and shrinkage and low dielectric constant is desired to prevent crosstalk between conducting paths. (c) 2023 Society of Industrial Chemistry.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据