Synthesis and characterization of tough polycyclic polyamides containing 4,9-Diamantyl moieties in the main chain

Chern, Yaw-Terng; Wang, Wenliang

doi:10.1002/(sici)1099-0518(199606)34:8<1501::aid-pola14>3.0.co;2-c

Cited by 31 publications

(19 citation statements)

References 2 publications

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“…1 H NMR (400 MHz), 13 C NMR (75 MHz) and 19 F NMR (100 MHz) spectra were recorded on a Bruker ARX 400 instrument; reference 0 ppm with TMS ( 1 H and 13 C NMR) or CFCl 3 ( 19 F NMR). 1 H NMR (400 MHz), 13 C NMR (75 MHz) and 19 F NMR (100 MHz) spectra were recorded on a Bruker ARX 400 instrument; reference 0 ppm with TMS ( 1 H and 13 C NMR) or CFCl 3 ( 19 F NMR).…”

Section: General Considerationsmentioning

confidence: 99%

“…TGA thermograms of the thiophene ring poly(ether imide)s. several means, such as introduction of flexible linkages, [8,9] bulky substituents, [10,11] or bulky units in the polymer backbone, [12][13][14] non-coplanar, [15,16] or alycyclic [17] monomers. A number of soluble polyimides have also reported from a series of diamines containing flexible units, bulky substituents, and/or noncoplanar conformation and a tetracarboxylic dianhydride with a benzhydrol unit, 3,3 0 ,4,4 0benzhydrol tetracarboxylic dianhydride (BHTDA) by one step method polymerization.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and properties of fluorinated polyimides, 2

Madhra

Salunke

Banerjee

et al. 2002

Macromol. Chem. Phys.

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Section: General Considerationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis and properties of fluorinated polyimides, 2

Madhra

Salunke

Banerjee

et al. 2002

Macromol. Chem. Phys.

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“…6,7 However, this process has several limitations, which include emission of volatile by-products during curing, such as water that create strength-weakening voids in thick parts and a storage instability of poly(amic acid) intermediates. 1,8 Solubilization of polyimides have been targeted by several means, such as introduction of flexible linkages, 9,10 bulky substituents, 11,12 or bulky units in the polymer backbone, 13,14 incorporation of alicyclic 15 or noncoplanar 16,17 units.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of highly soluble poly(ether imide)s containing indane moieties in the main chain

Dasgupta

Sen

Maji

et al. 2009

J of Applied Polymer Sci

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A new indane containing unsymmetrical diamine monomer (3) was synthesized. This diamine monomer leads to a number of novel semifluorinated poly (ether imide)s when reacted with different commercially available dianhydrides like benzene‐1,2,4,5‐tetracarboxylic dianhydride (PMDA), benzophenone‐3,3′, 4,4′‐tetracarboxylic dianhydride (BTDA), 4,4′‐(hexafluoro‐isopropylidene)diphthalic anhydride (6FDA), 4,4′‐oxydiphthalic anhydride (ODPA), and 4,4′‐(4,4′‐Isopropylidenediphenoxy)bis(phthalic anhydride) (BPADA) by thermal imidization route. All the poly(ether imide)s showed excellent solubility in several organic solvents such as N‐methylpyrrolidone (NMP), N,N‐dimethylformamide (DMF), N,N‐dimethylacetamide (DMAc), tetrahydrofuran (THF), chloroform (CHCl3) and dichloromethane (DCM) at room temperature. These light yellow poly (ether imide)s showed very low water absorption (0.19–0.30%) and very good optical transparency. Wide angle X‐ray diffraction measurements revealed that these polymers were amorphous in nature. The polymers exhibited high thermal stability up to 526°C in nitrogen with 5% weight loss, and high glass transition temperature up to 265°C. The polymers exhibited high tensile strength up to 85 MPa, modulus up to 2.5 GPa and elongation at break up to 38%, depending on the exact polymer structure. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009

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“…To utilize the thermal stability of polyimides for further applications and to take advantage of other properties of these classes of polymers, such as high chain rigidity, packing density, and polar chain interactions for different applications, it is desirable to synthesize soluble and/or melt‐processable variations. Solubilizations of the polyimides have been targeted by several means, such as the introduction of flexible linkages,13–20 bulky substituents21–39 and bulky units within the polymer backbone,40–52 non‐coplanar monomers,53–63 or alicyclic64–72 monomers. The main concept behind all of these approaches is the reduction of several types of polymer chain–chain interactions, reduction of chain packing, and charge‐transfer electronic polarization interactions.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and properties of fluorinated polyimides. 1. Derived from novel 4,4″‐bis(aminophenoxy)‐3,3″‐trifluoromethyl terphenyl

Banerjee

Madhra

Salunke

et al. 2002

J. Polym. Sci. A Polym. Chem.

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A new diamine monomer, 4,4″‐bis(aminophenoxy)‐3,3″‐trifluoromethyl terphenyl (ATFT) was synthesized that led to a number of novel fluorinated polyimides by solution as well as thermal imidization routes when reacted with different commercially available dianhydrides like pyromellatic dianhydride (PMDA), benzophenone tetracarboxylic acid dianhydride (BTDA), or 2,2‐bis(3,4‐dicarboxyphenyl) hexafluoropropane (6FDA). The polyimides ATFT/BTDA and ATFT/6FDA derived from both routes were soluble in several organic solvents such as N,N‐dimethylformamide, N,N‐dimethylacetamide, and dimethyl sulfoxide. The polyimide ATFT/PMDA was only soluble in N‐methylpyrollidone. The polyimide films had low water absorption of 0.3–0.7%, low dielectric constants of 2.72–3.3 at 1 Hz, refractive indices of 1.594–1.647 at 589.3 nm, and optical transparency >85%. These polyimides showed very high thermal stability with decomposition temperatures (5% weight loss) up to 532 °C in air and good isothermal stability; only 7% weight loss occurred at 400 °C after 7 h, and less than 0.6% weight loss was observed at 315 °C for 5 h. Transparent thin films of these polyimides exhibited tensile strengths up to 112 MPa, a modulus of elasticity up to 3.05 GPa, and elongation at break up to 21% depending on the repeating unit structure. © 2002 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 40: 1016–1027, 2002

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Synthesis and characterization of tough polycyclic polyamides containing 4,9-Diamantyl moieties in the main chain

Cited by 31 publications

References 2 publications

Synthesis and properties of fluorinated polyimides, 2

Synthesis and properties of fluorinated polyimides, 2

Synthesis and characterization of highly soluble poly(ether imide)s containing indane moieties in the main chain

Synthesis and properties of fluorinated polyimides. 1. Derived from novel 4,4″‐bis(aminophenoxy)‐3,3″‐trifluoromethyl terphenyl

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