Next Article in Journal
Improving the Electrochemical Performance and Stability of Polypyrrole by Polymerizing Ionic Liquids
Next Article in Special Issue
Effect of CNTs Additives on the Energy Balance of Carbon/Epoxy Nanocomposites during Dynamic Compression Test
Previous Article in Journal
Characterization of Engineering Plastics Plasticized Using Supercritical CO2
Previous Article in Special Issue
The Electrochemical Oxidation of Hydroquinone and Catechol through a Novel Poly-geminal Dicationic Ionic Liquid (PGDIL)–TiO2 Composite Film Electrode
Open AccessArticle

Transparent Polyimide/Organoclay Nanocomposite Films Containing Different Diamine Monomers

Department of Polymer Science and Engineering, Kumoh National Institute of Technology, Gumi 39177, Korea
*
Author to whom correspondence should be addressed.
Polymers 2020, 12(1), 135; https://doi.org/10.3390/polym12010135
Received: 29 November 2019 / Revised: 24 December 2019 / Accepted: 1 January 2020 / Published: 6 January 2020
(This article belongs to the Special Issue Advanced Polymer Nanocomposites)
Poly (amic acid) s (PAAs) were synthesized using 4,4′-(hexafluoroisopropyl-idene) diphthalic anhydride (6FDA) and two types of diamines—bis(3-aminophenyl) sulfone (BAS) and bis(3-amino-4-hydroxyphenyl) sulfone (BAS-OH). Two series of transparent polyimide (PI) hybrid films were synthesized by solution intercalation polymerization and thermal imidization using various concentrations (from 0 to 1 wt%) of organically modified clay Cloisite 30B in PAA solution. The thermo-mechanical properties, morphology, and optical transparency of the hybrid films were observed. The transmission electronic microscopy (TEM) results showed that some of the clays were agglomerated, but most of them showed dispersed nanoscale clay. The effects of -OH groups on the properties of the two PI hybrids synthesized using BAS and BAS-OH monomers were compared. The BAS PI hybrids were superior to the BAS-OH PI hybrids in terms of thermal stability and optical transparency, but the BAS-OH PI hybrids exhibited higher glass transition temperatures (Tg) and mechanical properties. Analysis of the thermal properties and tensile strength showed that the highest critical concentration of organoclay was 0.50 wt%. View Full-Text
Keywords: transparent polyimide; nanocomposite; film; organoclay; thermo-mechanical properties; optical transparency transparent polyimide; nanocomposite; film; organoclay; thermo-mechanical properties; optical transparency
Show Figures

Figure 1

MDPI and ACS Style

Shin, H.I.; Chang, J.-H. Transparent Polyimide/Organoclay Nanocomposite Films Containing Different Diamine Monomers. Polymers 2020, 12, 135.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop