Chitosan‐Silanized Hexagonal Boron Nitride Nanocomposite Films and Properties DOI Creative Commons
Zuhal Yılmaz, Yapıncak Göncü, Nuran Ay

et al.

Journal of Applied Polymer Science, Journal Year: 2025, Volume and Issue: unknown

Published: April 10, 2025

ABSTRACT In this study, chitosan‐silanized hexagonal boron nitride (hBN) nanocomposite films were developed using the solution casting method. Unlike chitosan‐hBN studies, silanization of hBN with Vinyl trimethoxy silane (VTS) formed hydrogen bonds. swelling ratio, an improvement 18.6% was observed addition compared to pure chitosan. A water vapor permeability 2.54 × 10 −10 g −1 s Pa for chitosan; however, value decreased 1.47 0.9% hBN. rate oxygen 542.2 cm 3 /m 2 day composites incorporating hBN, significantly lower than 1350.79 recorded Increasing enhanced composite films' thermal stability and improved UV barrier properties. Adding did not negatively affect NaOH resistance films. The sample containing 0.6% exhibited highest contact angle values 97.59 ± 2.68. research a tensile strength 77.9 MPa Young's modulus 6299.86 showed cell viability in cytotoxicity tests conducted at three different time periods all concentrations. It has been determined have good biocompatibility does show toxic effects.

Language: Английский

Research on the Resourceful and Efficient Recycling Technology of Waste Thermal Insulation Pipe Material DOI Creative Commons
Xiaohua Gu,

Qinglong Zhao,

Shangwen Zhu

et al.

ACS Omega, Journal Year: 2025, Volume and Issue: unknown

Published: March 24, 2025

This study was conducted to explore a new method for degrading and recycling waste chemical pipe insulation cooling materials. A degradation employed, utilizing alkali metal catalysts two-component alcoholysis system consisting of specific ratios diethylene glycol butylene glycol. The effectively degraded the polyisocyanurate (PIR) with aim reusing material. experimental results show that best reaction performance is obtained 1,4-BG/DEG ratio 43:57 at 180 190 °C 1 h. resulting regenerated has an apparent density 0.041 g/cm3 compressive strength 0.413 MPa. With remarkable thermal stability, well-preserved porosity, strong skeletal structure, cold loss on outer surface insulated lower than design requirement 23 W/m2, which qualified energy efficiency pipe. proposed strategy materials provides pioneering green treatment task polyurethane fire-resistant degradability high cross-linking degree.

Language: Английский

Citations

0
Chitosan‐Silanized Hexagonal Boron Nitride Nanocomposite Films and Properties DOI Creative Commons
Zuhal Yılmaz, Yapıncak Göncü, Nuran Ay

et al.

Journal of Applied Polymer Science, Journal Year: 2025, Volume and Issue: unknown

Published: April 10, 2025

ABSTRACT In this study, chitosan‐silanized hexagonal boron nitride (hBN) nanocomposite films were developed using the solution casting method. Unlike chitosan‐hBN studies, silanization of hBN with Vinyl trimethoxy silane (VTS) formed hydrogen bonds. swelling ratio, an improvement 18.6% was observed addition compared to pure chitosan. A water vapor permeability 2.54 × 10 −10 g −1 s Pa for chitosan; however, value decreased 1.47 0.9% hBN. rate oxygen 542.2 cm 3 /m 2 day composites incorporating hBN, significantly lower than 1350.79 recorded Increasing enhanced composite films' thermal stability and improved UV barrier properties. Adding did not negatively affect NaOH resistance films. The sample containing 0.6% exhibited highest contact angle values 97.59 ± 2.68. research a tensile strength 77.9 MPa Young's modulus 6299.86 showed cell viability in cytotoxicity tests conducted at three different time periods all concentrations. It has been determined have good biocompatibility does show toxic effects.

Language: Английский

Citations

0