Kim, Ryung Il Shin, Ju Ho Lee, Jong Suk Lee, Jung-Hyun Lee, Albert S. Hwang, Seung Sang 2024-01-19T17:33:16Z 2024-01-19T17:33:16Z 2021-09-05 2020-05 1996-1944 https://pubs.kist.re.kr/handle/201004/118659 A series of UV-curable hybrid composite blends containing a carboxylic acid functionalized polyimidewith varying amounts of high molecular weight (similar to 1 K) PEG-grafted ladder-structured polysilsesquioxanes copolymerized with methacryl groups were fabricated and their structural, thermal, mechanical, and surface properties characterized. At a composite weight ratio of polyimide above 50 wt.%, a stark shift from amorphous to crystalline polyethylene glycol (PEG) phases were observed, accompanied by a drastic increase in both surface moduli and brittleness index. Moreover, fabricated composites were shown to have a wide range water contact angle, 9.8 degrees-73.8 degrees, attesting to the tunable surface properties of these amphiphilic hybrid polymer composites. The enhanced mechanical properties, combined with the utility of tunable surface hydrophilicity allows for the possible use of these hybrid polymer composites to be utilized as photosensitive polyimide negative photoresists for a myriad of semiconductor patterning processes. English MDPI Open Access Publishing Tunable Crystalline Phases in UV-Curable PEG-Grafted Ladder-Structured Silsesquioxane/Polyimide Composites Article 10.3390/ma13102295 1 Materials, v.13, no.10 Materials 13 10 Y scie scopus 000539277000087 2-s2.0-85085350248 Chemistry, Physical Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Physics, Applied Physics, Condensed Matter Chemistry Materials Science Metallurgy & Metallurgical Engineering Physics Article POLYSILSESQUIOXANE MEMBRANES POLYMER ELECTROLYTES MOLECULAR DESIGN HYBRID POLYIMIDES MORPHOLOGY CHEMISTRY polyimide ladder-structured polysilsesquioxane hybrid composite 6FDA-DAM:DABA (3:2)