TY - JOUR
T1 - Synthesis and Characterization of New Soluble Polyimides from 3,3′,4,4′-Benzhydrol Tetracarboxylic Dianhydride and Various Diamines
AU - Liaw, Der Jang
AU - Liaw, Been Yang
AU - Li, Lain Jong
AU - Sillion, Bernard
AU - Mercier, Régis
AU - Thiria, Remi
AU - Sekiguchi, Hikaru
PY - 1998
Y1 - 1998
N2 - New soluble polyimides were prepared from a series of diamines and a tetracarboxylic dianhydride with a benzhydrol unit, 3,3′,4,4′-benzhydrol tetracarboxylic dianhydride (BHTDA), by one-step method polymerization. The diamines containing flexible units, bulky substituents, and/or noncoplanar conformation unit were prepared by the reaction of the corresponding bisphenol precursors and p-chloronitrobenzene, followed by catalytic reduction of the dinitro compounds. The polyimides obtained were soluble in various solvents such as N-methyl-2-pyrrolidone, N,N-dimethylacetamide, N,N-dimethylformamide, dimethyl sulfoxide, pyridine, γ-butyrolactone, m-cresol, and even tetrahydrofuran except for polymer PId. The polymers were amorphous and had number-average molecular weight (Mn) in the range (3.0-10.2) × 104. The glass transition temperatures (Tg) of the polymers ranged from 268 to 341 °C. These polymers exhibited good thermal stability without significant weight loss up to 420 °C. The temperatures at 10% weight loss range from 457 to 524 °C in nitrogen and 449 to 519 °C in air, respectively. The polyimide films were found to be transparent, flexible, and tough. The films had a tensile strength range 72-105 MPa, an elongation range at break of 4-7%, and a Young's modulus range of 2.18-2.85 GPa.
AB - New soluble polyimides were prepared from a series of diamines and a tetracarboxylic dianhydride with a benzhydrol unit, 3,3′,4,4′-benzhydrol tetracarboxylic dianhydride (BHTDA), by one-step method polymerization. The diamines containing flexible units, bulky substituents, and/or noncoplanar conformation unit were prepared by the reaction of the corresponding bisphenol precursors and p-chloronitrobenzene, followed by catalytic reduction of the dinitro compounds. The polyimides obtained were soluble in various solvents such as N-methyl-2-pyrrolidone, N,N-dimethylacetamide, N,N-dimethylformamide, dimethyl sulfoxide, pyridine, γ-butyrolactone, m-cresol, and even tetrahydrofuran except for polymer PId. The polymers were amorphous and had number-average molecular weight (Mn) in the range (3.0-10.2) × 104. The glass transition temperatures (Tg) of the polymers ranged from 268 to 341 °C. These polymers exhibited good thermal stability without significant weight loss up to 420 °C. The temperatures at 10% weight loss range from 457 to 524 °C in nitrogen and 449 to 519 °C in air, respectively. The polyimide films were found to be transparent, flexible, and tough. The films had a tensile strength range 72-105 MPa, an elongation range at break of 4-7%, and a Young's modulus range of 2.18-2.85 GPa.
UR - http://www.scopus.com/inward/record.url?scp=0001212053&partnerID=8YFLogxK
U2 - 10.1021/cm970463c
DO - 10.1021/cm970463c
M3 - Article
AN - SCOPUS:0001212053
SN - 0897-4756
VL - 10
SP - 734
EP - 739
JO - Chemistry of Materials
JF - Chemistry of Materials
IS - 3
ER -