Syntheses of Colorless and Transparent Poly(ester imide)s and Their PET Blends : Thermo-Mechanical Properties and Optical Transparency

Abstract

초록: Trimellitic anhydride chloride와 1,4-butanediol을 이용하여 1,2,4-benzenetricarboxylic acid 1,4-anhydride butylene ester(BCAB)를 새롭게 합성하였다. 합성된 BCAB와 6가지의 서로 다른 디아민(diamine)들을 이용하여 전 구체 poly(amic acid)(PAA)를 합성한 후, 열적 이미드화 반응을 통해 에스터 구조를 가지는 폴리에스터이미드(poly (ester imide), PEsI) 필름을 얻었다. 디아민 중 2,2'-bis(trifluoromethyl) benzidine(TFB)를 이용하여 합성된 PEsI와 다 양한 함량의 폴리(에틸렌 테레프탈레이트)(poly(ethylene terephthalate) PET

Synthetic strategies for highly transparent and colorless polyimide film

“…Although some typical highly‐transparent and colorless polymers, such as poly(ethylene terephthalate) (PET), 27 polycarbonate (PC), 28–30 poly(ethylene naphthalate) (PEN), 31,32 poly(ether ether ketone) (PEEK), 33 poly(ether sulfone) (PES) 34 have high optical transparency, but their thermal stability is poor. For example, even PES which has the best heat resistance, has a T g of only 225°C 35…”

“…11,[17][18][19][20][21] To prepare high performance thin film transistors, the substrates should withstand a processing temperature above 300 C 2,21 or even above 400 C. 22 Moreover, the processing temperature of photoelectric preparation such as physical vapor deposition (PVD) 23 and plasma enhanced chemical vapor deposition (PECVD) 24 may also exceed 400 C. 25 Therefore, plastic substrates are required to meet the need of not only high transparency, but also good thermal stability. 26 Although some typical highly-transparent and colorless polymers, such as poly(ethylene terephthalate) (PET), 27 polycarbonate (PC), [28][29][30] poly(ethylene naphthalate) (PEN), 31,32 poly(ether ether ketone) (PEEK), 33 poly(ether sulfone) (PES) 34 have high optical transparency, but their thermal stability is poor. For example, even PES which has the best heat resistance, has a T g of only 225 C. 35 Polyimide (PI) is a class of high-performance polymer that contains imide rings in its backbone.…”

Preparation of rare earth two‐dimensional nano‐thin film using PET as carrier

“…In summary, in view of the reported morphological imperfection problems in thin films, we use a simple homogeneous precipitation method to prepare a uniform, dense, ordered and large-scale growth of rare earth two-dimensional nano-thin film. Polyethylene terephthalate (PET) thin film is a colourless, odourless, transparent and shiny thin film with good mechanical and optical properties, chemical resistance and moderate biocompatibility [14][15][16]. Therefore, we use it as a carrier for the thin film.…”