Alternating polyester/fluoroalkene copolymers: Combining high hydrophobicity with degradability

Sachin Borkar; Ayusman Sen; Jeffrey R. Shallenberger

doi:10.1002/pola.21212

Alternating polyester/fluoroalkene copolymers: Combining high hydrophobicity with degradability

Sachin Borkar, Ayusman Sen, Jeffrey R. Shallenberger

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

18 Scopus citations

Abstract

2-Methylene-1,3-dioxepane (MDO) was copolymerized with fluoroalkenes (R _fCH=CH ₂) using azobis(isobutyronitrile) AIBN as an initiator. NMR spectroscopy confirmed that the obtained polymers are effectively alternating copolymers of caprolactone and fluoroalkene. Angle resolved XPS of copolymer films revealed that the outer layers have higher CF _x:COO ratio relative to the subsurface, indicating that the perfluoroalkyl tails segregate to the air-side, thereby presenting a hydrophobic surface with water contact angle as high as 130°. Blends of this material with polycaprolactone and polycarbonate polymers also form hydrophobic films. In the presence of trifluoroacetic acid, the copolymer undergoes complete degradation through hydrolysis.

Original language	English (US)
Pages (from-to)	1225-1232
Number of pages	8
Journal	Journal of Polymer Science, Part A: Polymer Chemistry
Volume	44
Issue number	3
DOIs	https://doi.org/10.1002/pola.21212
State	Published - Feb 1 2006

All Science Journal Classification (ASJC) codes

Polymers and Plastics
Organic Chemistry
Materials Chemistry

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10.1002/pola.21212

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title = "Alternating polyester/fluoroalkene copolymers: Combining high hydrophobicity with degradability",

abstract = "2-Methylene-1,3-dioxepane (MDO) was copolymerized with fluoroalkenes (R fCH=CH 2) using azobis(isobutyronitrile) AIBN as an initiator. NMR spectroscopy confirmed that the obtained polymers are effectively alternating copolymers of caprolactone and fluoroalkene. Angle resolved XPS of copolymer films revealed that the outer layers have higher CF x:COO ratio relative to the subsurface, indicating that the perfluoroalkyl tails segregate to the air-side, thereby presenting a hydrophobic surface with water contact angle as high as 130°. Blends of this material with polycaprolactone and polycarbonate polymers also form hydrophobic films. In the presence of trifluoroacetic acid, the copolymer undergoes complete degradation through hydrolysis.",

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AU - Sen, Ayusman

AU - Shallenberger, Jeffrey R.

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N2 - 2-Methylene-1,3-dioxepane (MDO) was copolymerized with fluoroalkenes (R fCH=CH 2) using azobis(isobutyronitrile) AIBN as an initiator. NMR spectroscopy confirmed that the obtained polymers are effectively alternating copolymers of caprolactone and fluoroalkene. Angle resolved XPS of copolymer films revealed that the outer layers have higher CF x:COO ratio relative to the subsurface, indicating that the perfluoroalkyl tails segregate to the air-side, thereby presenting a hydrophobic surface with water contact angle as high as 130°. Blends of this material with polycaprolactone and polycarbonate polymers also form hydrophobic films. In the presence of trifluoroacetic acid, the copolymer undergoes complete degradation through hydrolysis.

AB - 2-Methylene-1,3-dioxepane (MDO) was copolymerized with fluoroalkenes (R fCH=CH 2) using azobis(isobutyronitrile) AIBN as an initiator. NMR spectroscopy confirmed that the obtained polymers are effectively alternating copolymers of caprolactone and fluoroalkene. Angle resolved XPS of copolymer films revealed that the outer layers have higher CF x:COO ratio relative to the subsurface, indicating that the perfluoroalkyl tails segregate to the air-side, thereby presenting a hydrophobic surface with water contact angle as high as 130°. Blends of this material with polycaprolactone and polycarbonate polymers also form hydrophobic films. In the presence of trifluoroacetic acid, the copolymer undergoes complete degradation through hydrolysis.

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Alternating polyester/fluoroalkene copolymers: Combining high hydrophobicity with degradability

Abstract

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