Abstract
Ultra-thin films of poly(vinylidene fluoride) (PVDF) and its organically modified silicate (OMS) nanocomposites were prepared by heat-controlled spin coating and characterized using FTIRGIRAS, AFM, DC-EFM, and P-E measurements. Incorporation of OMS, Lucentite STN into the PVDF matrix favored the preferential formation of b-phase in nanoscale thin films, irrespective of preparation temperature. The PVDF-OMS nanocomposite films have a little higher degree of orientation of molecular chains along the ITO substrate surface than that of the neat PVDF film. This gave the PVDF-OMS nanocomposite higher remanent polarization and better contrast in a DC-EFM phase image. Unlike the thick PVDF-OMS nanocomposites films showing only α-crystalline phase after quenching and slow cooling from the melt, the nanoscale thin PVDF-OMS films showed a mixture of α- and γ-crystalline phases without any trace of α-crystalline phase.
| Original language | English |
|---|---|
| Pages (from-to) | 951-960 |
| Number of pages | 10 |
| Journal | Macromolecular Chemistry and Physics |
| Volume | 210 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 2009 Jun 5 |
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All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Physical and Theoretical Chemistry
- Polymers and Plastics
- Organic Chemistry
- Materials Chemistry
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Crystalline structure and ferroelectric response of poly(vinylidene fluoride)/ organically modified silicate thin films prepared by heat controlled spin coating. / Ramasundaram, Subramaniyan; Yoon, Sun; Kim, Kap Jin; Lee, Jong Soon; Park, Cheolmin.
In: Macromolecular Chemistry and Physics, Vol. 210, No. 11, 05.06.2009, p. 951-960.Research output: Contribution to journal › Article
TY - JOUR
T1 - Crystalline structure and ferroelectric response of poly(vinylidene fluoride)/ organically modified silicate thin films prepared by heat controlled spin coating
AU - Ramasundaram, Subramaniyan
AU - Yoon, Sun
AU - Kim, Kap Jin
AU - Lee, Jong Soon
AU - Park, Cheolmin
PY - 2009/6/5
Y1 - 2009/6/5
N2 - Ultra-thin films of poly(vinylidene fluoride) (PVDF) and its organically modified silicate (OMS) nanocomposites were prepared by heat-controlled spin coating and characterized using FTIRGIRAS, AFM, DC-EFM, and P-E measurements. Incorporation of OMS, Lucentite STN into the PVDF matrix favored the preferential formation of b-phase in nanoscale thin films, irrespective of preparation temperature. The PVDF-OMS nanocomposite films have a little higher degree of orientation of molecular chains along the ITO substrate surface than that of the neat PVDF film. This gave the PVDF-OMS nanocomposite higher remanent polarization and better contrast in a DC-EFM phase image. Unlike the thick PVDF-OMS nanocomposites films showing only α-crystalline phase after quenching and slow cooling from the melt, the nanoscale thin PVDF-OMS films showed a mixture of α- and γ-crystalline phases without any trace of α-crystalline phase.
AB - Ultra-thin films of poly(vinylidene fluoride) (PVDF) and its organically modified silicate (OMS) nanocomposites were prepared by heat-controlled spin coating and characterized using FTIRGIRAS, AFM, DC-EFM, and P-E measurements. Incorporation of OMS, Lucentite STN into the PVDF matrix favored the preferential formation of b-phase in nanoscale thin films, irrespective of preparation temperature. The PVDF-OMS nanocomposite films have a little higher degree of orientation of molecular chains along the ITO substrate surface than that of the neat PVDF film. This gave the PVDF-OMS nanocomposite higher remanent polarization and better contrast in a DC-EFM phase image. Unlike the thick PVDF-OMS nanocomposites films showing only α-crystalline phase after quenching and slow cooling from the melt, the nanoscale thin PVDF-OMS films showed a mixture of α- and γ-crystalline phases without any trace of α-crystalline phase.
UR - http://www.scopus.com/inward/record.url?scp=67649795109&partnerID=8YFLogxK
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U2 - 10.1002/macp.200800600
DO - 10.1002/macp.200800600
M3 - Article
AN - SCOPUS:67649795109
VL - 210
SP - 951
EP - 960
JO - Acta Polymerica
JF - Acta Polymerica
SN - 1022-1352
IS - 11
ER -