Suppressing Crystallinity by Nanoconfining Polymers Using Initiated Chemical Vapor Deposition

Zhengtao Chen; Kenneth K.S. Lau

doi:10.1021/acs.macromol.9b00496

Suppressing Crystallinity by Nanoconfining Polymers Using Initiated Chemical Vapor Deposition

Zhengtao Chen, Kenneth K.S. Lau

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

Poly(1H,1H,2H,2H-perfluorodecyl acrylate) (PPFDA) is incorporated within a sintered mesoporous network of TiO₂ nanoparticles via initiated chemical vapor deposition (iCVD). iCVD PPFDA grows uniformly on the pore surface of the mesoporous TiO₂ (25 nm pore diameter, 2-4 μm thick), resulting in up to 91% of the pore volume being filled. This leads to a high TiO₂ loading (58 vol %, 67 wt %) in the PPFDA-TiO₂ nanocomposite and a large decrease in the PPFDA crystallinity by >93% compared to the bulk polymer film. The significantly suppressed crystallinity is attributed to the nanoconfinement of polymer chains in the tortuous, interconnected nanopore channels that frustrates chain alignment, and from the large interfacial energy difference between PPFDA fluoropolymer and hydroxylated TiO₂ that impedes heterogeneous nucleation for crystal growth.

Original language	English (US)
Pages (from-to)	5183-5191
Number of pages	9
Journal	Macromolecules
Volume	52
Issue number	14
DOIs	https://doi.org/10.1021/acs.macromol.9b00496
State	Published - Jul 3 2019
Externally published	Yes

All Science Journal Classification (ASJC) codes

Organic Chemistry
Polymers and Plastics
Inorganic Chemistry
Materials Chemistry

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10.1021/acs.macromol.9b00496

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title = "Suppressing Crystallinity by Nanoconfining Polymers Using Initiated Chemical Vapor Deposition",

abstract = "Poly(1H,1H,2H,2H-perfluorodecyl acrylate) (PPFDA) is incorporated within a sintered mesoporous network of TiO2 nanoparticles via initiated chemical vapor deposition (iCVD). iCVD PPFDA grows uniformly on the pore surface of the mesoporous TiO2 (25 nm pore diameter, 2-4 μm thick), resulting in up to 91% of the pore volume being filled. This leads to a high TiO2 loading (58 vol %, 67 wt %) in the PPFDA-TiO2 nanocomposite and a large decrease in the PPFDA crystallinity by >93% compared to the bulk polymer film. The significantly suppressed crystallinity is attributed to the nanoconfinement of polymer chains in the tortuous, interconnected nanopore channels that frustrates chain alignment, and from the large interfacial energy difference between PPFDA fluoropolymer and hydroxylated TiO2 that impedes heterogeneous nucleation for crystal growth.",

author = "Zhengtao Chen and Lau, {Kenneth K.S.}",

note = "Publisher Copyright: {\textcopyright} 2019 American Chemical Society.",

year = "2019",

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doi = "10.1021/acs.macromol.9b00496",

language = "English (US)",

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pages = "5183--5191",

journal = "Macromolecules",

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publisher = "American Chemical Society",

number = "14",

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TY - JOUR

T1 - Suppressing Crystallinity by Nanoconfining Polymers Using Initiated Chemical Vapor Deposition

AU - Chen, Zhengtao

AU - Lau, Kenneth K.S.

PY - 2019/7/3

Y1 - 2019/7/3

N2 - Poly(1H,1H,2H,2H-perfluorodecyl acrylate) (PPFDA) is incorporated within a sintered mesoporous network of TiO2 nanoparticles via initiated chemical vapor deposition (iCVD). iCVD PPFDA grows uniformly on the pore surface of the mesoporous TiO2 (25 nm pore diameter, 2-4 μm thick), resulting in up to 91% of the pore volume being filled. This leads to a high TiO2 loading (58 vol %, 67 wt %) in the PPFDA-TiO2 nanocomposite and a large decrease in the PPFDA crystallinity by >93% compared to the bulk polymer film. The significantly suppressed crystallinity is attributed to the nanoconfinement of polymer chains in the tortuous, interconnected nanopore channels that frustrates chain alignment, and from the large interfacial energy difference between PPFDA fluoropolymer and hydroxylated TiO2 that impedes heterogeneous nucleation for crystal growth.

AB - Poly(1H,1H,2H,2H-perfluorodecyl acrylate) (PPFDA) is incorporated within a sintered mesoporous network of TiO2 nanoparticles via initiated chemical vapor deposition (iCVD). iCVD PPFDA grows uniformly on the pore surface of the mesoporous TiO2 (25 nm pore diameter, 2-4 μm thick), resulting in up to 91% of the pore volume being filled. This leads to a high TiO2 loading (58 vol %, 67 wt %) in the PPFDA-TiO2 nanocomposite and a large decrease in the PPFDA crystallinity by >93% compared to the bulk polymer film. The significantly suppressed crystallinity is attributed to the nanoconfinement of polymer chains in the tortuous, interconnected nanopore channels that frustrates chain alignment, and from the large interfacial energy difference between PPFDA fluoropolymer and hydroxylated TiO2 that impedes heterogeneous nucleation for crystal growth.

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JO - Macromolecules

JF - Macromolecules

IS - 14

ER -

Suppressing Crystallinity by Nanoconfining Polymers Using Initiated Chemical Vapor Deposition

Abstract

All Science Journal Classification (ASJC) codes

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