Synthesis and characteristics of HAB‐6FDA thermally rearranged polyimide nanocomposite membranes

AbstractThe synthesis of reflective silvered polyimide films by a single-stage auto-metallization process entailing the (hexafluoroacetylacetonato)silver(I) complex dissolved in solutions of poly(amic acid)s and polyimides formed from 2,2-bis(3,4-dicarboxyphenyl)hexafluoropropanedianhydride (6FDA) and 2,2-bis(4-(4-aminophenoxy)hexafluoropropane (4-BDAF) is described. Heating cast silver(I)-poly(amic acid)/polyimide films effects silver(I) reduction and nanoaggregation giving reflective films for Ag concentrations from 6-10 wt %. A6% silver film gives specular reflectivies greater than 80%. Films prepared from the soluble fully imidized form of 6FDA/4-BDAF were less reflective.

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Aminoethylaminopropylisobutyl POSS—Polyimide nanocomposite membranes and their gas transport properties

Materials Science and Engineering B ◽

10.1016/j.mseb.2009.10.006 ◽

2010 ◽

Vol 168 (1-3) ◽

pp. 30-35 ◽

Cited By ~ 37

Author(s):

Barnali Dasgupta ◽

Suman Kumar Sen ◽

Susanta Banerjee

Keyword(s):

Transport Properties ◽

Gas Transport ◽

Nanocomposite Membranes ◽

Gas Transport Properties ◽

Polyimide Nanocomposite

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Synthesis and characterization of sodalite–polyimide nanocomposite membranes

Microporous and Mesoporous Materials ◽

10.1016/j.micromeso.2009.05.014 ◽

2009 ◽

Vol 126 (1-2) ◽

pp. 14-19 ◽

Cited By ~ 30

Author(s):

Dan Li ◽

Huai Yong Zhu ◽

Kyle R. Ratinac ◽

Simon P. Ringer ◽

Huanting Wang

Keyword(s):

Synthesis And Characterization ◽

Nanocomposite Membranes ◽

Polyimide Nanocomposite

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Preparation and Characterization of AlOOH/Polyimide Nanocomposite Membrane

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.412.406 ◽

2011 ◽

Vol 412 ◽

pp. 406-409

Author(s):

Hai Da Liao ◽

Wei Ping Zhang ◽

Xiao Ming Sun ◽

Fang Fang Wang ◽

Xin Si Lan

Keyword(s):

Particle Size ◽

Raw Material ◽

Nanocomposite Membrane ◽

Transmission Property ◽

Hydrothermal Crystallization ◽

Nanocomposite Membranes ◽

Charge Process ◽

Polyimide Nanocomposite ◽

Polyimide Matrix

Using metallurgical grade aluminum hydroxide as the raw material self-dispersed g-AlOOH nanopowders were made by sol-hydrothermal crystallization and the charge process. The AlOOH/polyimide nanocomposite membrane was prepared by compounding soluble polyamide with AlOOH using sol dispersed quasi-homogeneous blending and compounding method. TEM, XRD, IR and other techniques were employed to characterize AlOOH nanopowders and AlOOH/polyimide nanocomposite membranes, respectively. The results showed that: the particle size of AlOOH crystal was about 70nm, with good self-dispersion in water and some organic solvents; in the polyimide matrix, the AlOOH was dispersed at nanoscale, without agglomeration; when its content in composite membrane reached 15 %, it still had a good dispersion and transmission property.

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