US EPA

1464932 

Journal Article 

Effects of chemical structure and molecular weight of plasticizer on physical properties of green tape in BaTiO3/PVB system 

Kim, DH; Lim, KY; Paik, U; Jung, YG 

2004 

Yes 

Journal of the European Ceramic Society
ISSN: 0955-2219 

Elsevier BV 

OXFORD 

24 

5 

733-738 

English 

10.1016/S0955-2219(03)00256-5 

WOS:000187843000004 

https://www.scopus.com/inward/record.uri?eid=2-s2.0-0242539957&doi=10.1016%2fS0955-2219%2803%2900256-5&partnerID=40&md5=68a3eec231c91426170d9064fac02315
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The effects of the chemical structure and molecular weight
(M-w) of plasticizer on the physical properties of green tapes were investigated by measuring the
theological behavior of suspensions and estimating the tensile properties of green tapes. The
BaTiO3 green tapes were fabricated from the suspensions prepared in nonaqueous media with poly
(vinyl butyral) (PVB) and various plasticizers, such as di-octyl phthalate (DOP, M(w)approximate
to391), butyl benzyl phthalate (BBP, M(w)approximate to312), and two kinds of polyethylene
glycols (PEG400 (M(w)approximate to400) and PEG1530 (M(w)approximate to1300-1600)). As the
suspension was prepared with lower M-w of plasticizer, the viscosity of suspension and
flexibility of green tape was decreased and improved, respectively. The BaTiO3 suspension
prepared with PEG1530 resulted in delamination of the cutting surface due to low flexibility of
green tape. The chemical structure of plasticizer also affected the elongation behavior of green
tape as a function of time. The BaTiO3 green tapes prepared with phthalate-based plasticizers
having an aromatic unit (DOP and BBP) were found to be more stable for time-dependant elongation
property of the green tapes than those prepared with glycol-based plasticizers having an
aliphatic structure (PEG) in BaTiO3/PVB system. (C) 2003 Elsevier Ltd. All rights reserved. 

BaTiO3; plasticity; strength; suspensions; tape casting