Related Researcher

Author's Photo

Shin, Tae Joo
UNIST Synchrotron Radiation Research Laboratory
Research Interests
  • Synchrotron Radiation Application Researches


Miscibility behavior of polyimide (PI)/poly(arylene ether benzimidazole) (PAEBI) blends and its effects on the adhesion of PI/PAEBI/copper joints

Cited 12 times inthomson ciCited 12 times inthomson ci
Miscibility behavior of polyimide (PI)/poly(arylene ether benzimidazole) (PAEBI) blends and its effects on the adhesion of PI/PAEBI/copper joints
Yu, JRee, MShin, Tae JooWang, XCai, WZhou, DLee, KW
Poly(arylene ether benzimidazole); Polyimide; Precursor polymer
Issue Date
POLYMER, v.41, no.1, pp.169 - 177
Poly(amic acid) (PAA) and poly(amic diethyl ester) (PAE) precursors of poly(p-phenylene biphenyltetracarboximide) (BPDA-PDA), which is a representative polyimide (PI) being used widely in the microelectronic industry as an interdielectric material, were synthesized. The miscibility behavior of these precursors with poly(arylene ether benzimidazole) (PAEBI), which is known to exhibit strong cohesive adhesion to copper metal conductor, were studied in N-methyl-2-pyrrolidone (NMP) as well as the condensed state and the imidized state using light scattering technique. And, the miscibility effect on the adhesion strength of PI/PAEBI/copper joint, in which the locus of failure is known to be within the PI layer, was investigated by 90 degrees peel test. The PAA precursor was miscible completely with PAEBI in the NMP solution as well as in the condensed state via the strong interaction between carboxylic acid groups of the precursor and imidazole groups of PAEBI. However, imidization-induced phase-separation took place during thermal imidization of the PAA precursor, leading to domains of 0.7-1.4 mu m for the imidized blends containing 30-70 wt % PI. The other blend compositions still were optically transparent. In contrast, the PAE precursor was miscible with PAEBI in the NMP solution with a limited concentration of <11.3-14.5 wt %, but immiscible almost completely in the condensed state, causing phase-separation. The phase-separation occurred further during thermal imidization, producing domains of 0.8-3.0 mu m In particular, the 50/50 (=PAEBI/PAE, wt/wt) blend had domains of >3.6 mu m. Only the 90/10 blend film was optically transparent. The di difference in the miscibilities of PAEBI with the polyimide precursors was reflected on the adhesion strength of PV PAEBI/copper joint. The PAA precursor gave a relatively high peel strength, compared to the PAE precursor. In addition, the PAEBI having a relatively low intrinsic viscosity provided a high peel strength in the adhesion joint. (C) 1999 Elsevier Science Ltd. All rights reserved
Go to Link
Appears in Collections:
SE_Journal Papers
Files in This Item:
1-s2.0-S003238619900141X-main.pdf Download

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record


  • mendeley


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.