A biobased photocurable binder for composites with transparency and thermal stability from biomass-derived isosorbide

Seunghan Shin, Byung Chul Kim, Eugene Chang, Jin Ku Cho, Dong Hack Suh

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

A biobased photocurable binder was synthesized from isosorbide in a high yield (91%) and used as a binder for transparent glass fabric composites. The photocurable isosorbide binder showed a lower refractive index (n = 1.489) than that of glass (n = 1.560) and low viscosity (48.6 cP at 25 °C) owing to the wedge-shaped fused ring structure of the isosorbide moiety. Transparent glass fabric composites were prepared by refractive index matching using a cardo-type fluorene based binder (n = 1.583) as a co-binder. A glass fabric composite photocured with equal wt% of the cardo- and isosorbide-based binder showed 85% of transmittance at 550 nm by UV-visible spectroscopy. It also showed a considerably good coefficient of thermal expansion (α1 = 16.3 ppm K-1) and glass transition temperature (142 °C by DMA). As the wt% of the isosorbide-based binder increased, the network structure of the binder mixture became tight to give a higher glass transition temperature but the composite's transparency was decreased.

Original languageEnglish
Pages (from-to)6226-6231
Number of pages6
JournalRSC Advances
Volume4
Issue number12
DOIs
StatePublished - 2014 Jan 17

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Isosorbide
Transparency
Binders
Biomass
Thermodynamic stability
Composite materials
Glass
Refractive index
Dynamic mechanical analysis
Thermal expansion
Spectroscopy
Viscosity

Cite this

Shin, Seunghan ; Kim, Byung Chul ; Chang, Eugene ; Cho, Jin Ku ; Suh, Dong Hack. / A biobased photocurable binder for composites with transparency and thermal stability from biomass-derived isosorbide. In: RSC Advances. 2014 ; Vol. 4, No. 12. pp. 6226-6231.
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A biobased photocurable binder for composites with transparency and thermal stability from biomass-derived isosorbide. / Shin, Seunghan; Kim, Byung Chul; Chang, Eugene; Cho, Jin Ku; Suh, Dong Hack.

In: RSC Advances, Vol. 4, No. 12, 17.01.2014, p. 6226-6231.

Research output: Contribution to journalArticle

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