Lee, Jihye Shin, Kwanwoo Lee, Kang-Bong Lee, Yeonhee 2024-01-20T08:33:15Z 2024-01-20T08:33:15Z 2021-09-02 2014-11 0142-2421 https://pubs.kist.re.kr/handle/201004/126206 For block copolymers, the chemical difference between the two blocks will result in a preferential segregation of one of the blocks to the interface, but the phase separation is only on a microscopic scale, forming micro-domain structures due to the influence of inter-segment linkages, which restricts the extent to which the phases can separate. In this study, we report the characterization of the morphology from the lower disorder-order transition diblock copolymer, polystyrene-b-poly(2-ethyl hexyl acrylate) (PS-PEHA) where the PS blocks are perdeuterated, using surface techniques. The molecular surface composition and microscopic morphology for the diblock copolymers were obtained by time-of-flight secondary ion mass spectrometry (TOF-SIMS) and atomic force microscopy (AFM). TOF-SIMS depth profiles of diblock copolymers showed consistently regular alternative patterns with a constant period that was the same size as the lamellar spacing structure, as determined by AFM images. Structural characterization of dPS-PEHA thin films by TOF-SIMS and AFM was also performed for different molecular weights and film thickness. Copyright (c) 2014 John Wiley & Sons, Ltd. English WILEY-BLACKWELL Surface analysis of diblock copolymer films by TOF-SIMS in combination with AFM Article 10.1002/sia.5513 1 SURFACE AND INTERFACE ANALYSIS, v.46, pp.87 - 91 SURFACE AND INTERFACE ANALYSIS 46 87 91 N scie scopus 000345696200023 2-s2.0-84912108531 Chemistry, Physical Chemistry Article; Proceedings Paper BLOCK-COPOLYMER PHASE-BEHAVIOR POLYCARBONATE MORPHOLOGY SEPARATION BLENDS TOF-SIMS depth profiling AFM PS PEHA block copolymer lamellar structure