Surface grafting of polyimide onto silicon surface: Preparation and characterization

Liu, Ying‐Ling; Chen, Shih-Chun; Liu, Chuan-Shun

doi:10.1002/pola.22255

Cited by 3 publications

(4 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The binding energy of N 1s much lower than the N-Si, N-phenyl, and N-amide bonds in that order. However, the presence of the N-SiO chemical group indicates the reaction between the amine and the siloxane [21][22][23][24][25]. For the example of SiO 2 , if the same chemical structure is found in both the oxygen and silicon spectra, it proves the presence of the SiO 2 group.…”

Section: Chemical Structure Of the Silane-coated Membranes By Xps Studymentioning

confidence: 90%

Modification to the polyamide TFC RO membranes for improvement of chlorine-resistance

Shin

Kim

Lee

2011

Journal of Membrane Science

101

View full text Add to dashboard Cite

Section: Chemical Structure Of the Silane-coated Membranes By Xps Studymentioning

confidence: 90%

Modification to the polyamide TFC RO membranes for improvement of chlorine-resistance

Shin

Kim

Lee

2011

Journal of Membrane Science

101

View full text Add to dashboard Cite

“…The quantity of (S)- N -Boc-2,3-epoxypropylamine used in the reaction was adjusted in order to graft around 100 of this molecule on the DND surface. The epoxy group of the (S)- N -Boc-2,3-epoxypropylamine molecule was used to form covalent bond with the OH groups 14 . The deprotection of the amine group was achieved to obtain the primary amine group.…”

Section: Resultsmentioning

confidence: 99%

Optical properties of functionalized nanodiamonds

Pichot

Muller

Sève

et al. 2017

Sci Rep

View full text Add to dashboard Cite

Detonation nanodiamonds exhibit strong nonlinear optical properties depending on their electronic properties. In the present paper, the nanodiamond functional groups are chemically modified to obtain nanodiamonds with primary amines on their surface. The optical properties of such nanodiamonds placed in water suspensions are studied and compared with the one of classical detonation nanodiamonds. Transmission, scattering and Z-scan experiments are performed for two different wavelengths (532 nm and 1064 nm). A lower threshold for optical limiting associated to more pronounce non-linear optical effects is detected at the wavelength of 1064 nm compared to the one at 532 nm. This effect may be due to a stronger nonlinear backscattering behavior at 1064 nm. Moreover, a striking result obtained from the Z-scan experiments reveals a completely different behavior of the functionalized nanodiamonds for both wavelengths. This result is discussed in regard to the electronic properties of the material and possible charge transfer.

show abstract

“…Methods previously investigated for incorporating Zr-containing components into PI matrices include: addition of Zr compounds and complexes to commercially available solutions of the polyamic acid (PAA) from 4,4 1 -oxydianiline and pyromellitic acid, PAA[4,4 1 -ODA/PMDA], followed by film fabrication and imidization to give composites [50], and, addition of Zr-containing polymers to PAA [4,4 1 -ODA/PMDA] solutions, followed by film fabrication and imidization to give PI blends [51]. Note that the structure obtained upon imidization of PAA [4,4 1 -ODA/PMDA] matches that of Kapton TM (DuPont), which is a space-qualified material.…”

Section: Introductionmentioning

confidence: 99%

“…In the first paper of this series, the novel use of mellitic acid dianhydride (MADA) as a PI synthon and location for Zr-pendent group attachment was described [76]. For the prototype polymers co-PAA [(4,4 1 -ODA/PMDA) m (4,4 1 -ODA/MADA) 12m ] and co-PAA [(4,4 1 -ODA/PMDA) m (4,4 1 -ODA/MADA) 12m p-Zr 011 ], gel formation during polymerization limited the ratio of MADA:PMDA that could be used. The corresponding imidized polymers showed no glass transition temperatures (T g ) or melt temperatures (T m ) up to 450 3 C. In the subsequent paper, a structure-property study was conducted to reveal which of the PI structures investigated had the best film-forming properties with the Zr-pendent concentration held at 10 mole% [77].…”

Section: Introductionmentioning

confidence: 99%

Pendent Polyimides using Mellitic Acid Dianhydride. IV. Effect of Increased Zirconium-Pendent Group Content on Polymer Properties

Chow

Cheng

Dai

et al. 2008

High Performance Polymers

View full text Add to dashboard Cite

For co-polyimides (PIs) of mellitic acid dianhydride, 1,3-aminophenoxybenzene and 4,4′-oxydiphthalic anhydride, Zr-pendent group content could be increased to 50% (mol) improving atomic oxygen (AO) resistance while retaining good film properties. Spectral data are consistent with expected structures. Intrinsic viscosities of 0.54—0.60 dL g—1 and average molecular weights of 111 000—122 000 g mol— 1 estimated from gel permeation chromatography confirm the polymeric nature of co-polyamic acid precursors. Nuclear magnetic resonance integrations and amounts of thermogravimetric analysis residue verify pendent group concentrations. Increasing Zr-pendent group concentration from 10 to 50% (mol) caused glass transition temperatures to increase (198—245 °C), decomposition temperatures to decrease (518—455 °C), and the number of film layers able to be fabricated prior to crack formation to decrease (10 to 8). These numbers of layers were much higher than those for other PIs with comparable Zr-pendent group concentrations. Increased pendent group concentration caused the amount of protective oxide layer formed upon AO exposure to increase.

show abstract

Surface grafting of polyimide onto silicon surface: Preparation and characterization

Cited by 3 publications

References 35 publications

Modification to the polyamide TFC RO membranes for improvement of chlorine-resistance

Modification to the polyamide TFC RO membranes for improvement of chlorine-resistance

Optical properties of functionalized nanodiamonds

Pendent Polyimides using Mellitic Acid Dianhydride. IV. Effect of Increased Zirconium-Pendent Group Content on Polymer Properties

Contact Info

Product

Resources

About