Synthesis and Investigation of the Properties of Castor Oil‐Based Waterborne Polyurethane/Nanochitosan Nanocomposites With Antibacterial Properties DOI

Zahra Telikani,

Ali Jahani,

Peyman Naghavi Ilkhchi

и другие.

Polymers for Advanced Technologies, Год журнала: 2025, Номер 36(5)

Опубликована: Май 1, 2025

ABSTRACT In coatings technology, the ability to incorporate tailored characteristics at surface level enables production of materials with effective and long‐lasting antibacterial properties. This study explores synthesis waterborne polyurethanes (WPU) employing natural oil‐based polyols, particularly castor oil, as sustainable polymer precursors. The WPU‐C2 sample exhibits stronger hydrogen bonding than other samples, suggesting formation physically entangled networks. DSC tests show that glass transition temperature soft segment in is 5.5°C, increased gelation resulting reduced chain mobility a higher temperature. physical structure polymers was also analyzed using X‐ray diffraction, which indicates 149% signifies its good tensile mechanical performance. sample, lower amount DMPA results fewer hydrophilic groups, leading smaller particle sizes during water emulsification. smallest average size 13.81 nm. Additionally, WPU‐C2, gel content 97%, lowest swelling 10.9%. were significantly influenced by molar ratio hydrophilicity, impacting rate. Furthermore, chitosan nanoparticle weight percentage nanocomposites inhibited growth E. coli S. aureus , both bacteria showing inhibition zones 9 mm. suggests potential for use an coating material.

Язык: Английский

Synthesis and Investigation of the Properties of Castor Oil‐Based Waterborne Polyurethane/Nanochitosan Nanocomposites With Antibacterial Properties DOI

Zahra Telikani,

Ali Jahani,

Peyman Naghavi Ilkhchi

и другие.

Polymers for Advanced Technologies, Год журнала: 2025, Номер 36(5)

Опубликована: Май 1, 2025

ABSTRACT In coatings technology, the ability to incorporate tailored characteristics at surface level enables production of materials with effective and long‐lasting antibacterial properties. This study explores synthesis waterborne polyurethanes (WPU) employing natural oil‐based polyols, particularly castor oil, as sustainable polymer precursors. The WPU‐C2 sample exhibits stronger hydrogen bonding than other samples, suggesting formation physically entangled networks. DSC tests show that glass transition temperature soft segment in is 5.5°C, increased gelation resulting reduced chain mobility a higher temperature. physical structure polymers was also analyzed using X‐ray diffraction, which indicates 149% signifies its good tensile mechanical performance. sample, lower amount DMPA results fewer hydrophilic groups, leading smaller particle sizes during water emulsification. smallest average size 13.81 nm. Additionally, WPU‐C2, gel content 97%, lowest swelling 10.9%. were significantly influenced by molar ratio hydrophilicity, impacting rate. Furthermore, chitosan nanoparticle weight percentage nanocomposites inhibited growth E. coli S. aureus , both bacteria showing inhibition zones 9 mm. suggests potential for use an coating material.

Язык: Английский

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