NDLI: Amine functionalized SBA-15/terpolyimide composites with low dielectric constant

Content Provider	Springer Nature Link
Author	Purushothaman, Revathi
Copyright Year	2015
Abstract	Polyimides with low dielectric constants are important raw materials for the fabrication of flexible printed circuit boards and other microelectronic applications. As creation of voids in polyimide matrix could decrease the dielectric constant, in this study mesoporous SBA-15, synthesized hydrothermally, was functionalized with 3-aminopropyltriethoxysilane (APTS) and incorporated (2–10 %) into terpolyimide. The APTS functionalized SBA-15 was mixed with 4,4′-oxydianiline in the synthesis of terpoly(amic acid) using 3,3′,4,4′-biphenyldianhydride (BPDA), 3,3′,4,4′-oxydiphthalicdianhydride (ODPA) and 3,3′,4,4′-benzophenonetetracarboxylic dianhydride (BTDA) and subsequently stage-cured to obtain APTS-SBA-15/terpolyimide composites. The asymmetric and symmetric vibrations of imide O=C–N–C=O groups of APTS-SBA-15/terpolyimide composites showed their peaks at 1772 and 1713 cm$^{−1}$. The dielectric constant of APTS-SBA-15/terpolyimide composite decreased with the increase in APTS-SBA-15 loading from 2 to 8 %, and remained same at 10 %, and at 8 and 10 % loading it was 2.42. However, there was agglomeration of mesoporous silica in APTS-SBA-15 (8 and 10 %)/terpolyimide composites. Hence, APTS-SBA-15 (6 %)/terpolyimide with dielectric constant (2.51), tensile strength (100 MPa), tensile modulus (3.3 GPa), percentage elongation (7.3) and high thermal stability (>540 °C) could be suitable for application in microelectronics such as tape automated bonding and flexible printed circuits. Therefore, polyimide composites carrying optimum amount of mesoporous materials can be expected to have adequate thermal and mechanical properties with significantly low dielectric constant.
Starting Page	585
Ending Page	594
Page Count	10
File Format	PDF
ISSN	13802224
Journal	Journal of Porous Materials
Volume Number	22
Issue Number	3
e-ISSN	15734854
Language	English
Publisher	Springer US
Publisher Date	2015-03-18
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	SBA-15 Composites Terpolyimide Porous materials Dielectric constant Catalysis Characterization and Evaluation of Materials Physical Chemistry
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Materials Science Mechanical Engineering

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