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<p>Poly(vinyl alcohol) (PVOH)–polyethylene glycol (PEG) hybrid films were prepared by aqueous solution casting and subsequently modified using electron beam (EB) irradiation to evaluate structure–property relationships. PVOH–PEG (80/20) (PV-EG82) demonstrated the most balanced mechanical performance and was chosen for irradiation. Gel fraction analysis indicated efficient EB-induced crosslinking, with the highest network density attained at 30&#xa0;kGy (1&#xa0;kGy/pass). Mechanical tests found that modest doses increased tensile strength, modulus, and surface hardness, whereas higher doses (&gt;30&#xa0;kGy) caused chain scission and property loss. FTIR spectra revealed structural rearrangements and new vibrational bands associated with crosslinking, whereas contact angle and SEM investigations revealed decreased hydrophilicity and a denser surface shape. Thermogravimetric measurement demonstrated the enhanced thermal stability of irradiated films compared to virgin samples. Together, these results reveal that EB irradiation offers a clean and controllable approach to modify the crosslinking, mechanical, thermal, and surface properties of PVOH–PEG hybrids, emphasizing their promise in advanced packaging, coatings, and biomedical applications.</p>

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Electron beam-induced crosslinking and property enhancement of PVOH–PEG hybrid films for advanced coating applications

  • 期刊论文

  • 发表日期：

    2026年6月30日

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  • Bhuwanesh Kumar Sharma,
  • Atanu Jha,
  • Amol Thite,
  • Karuppiah Nagaraj

摘要

Poly(vinyl alcohol) (PVOH)–polyethylene glycol (PEG) hybrid films were prepared by aqueous solution casting and subsequently modified using electron beam (EB) irradiation to evaluate structure–property relationships. PVOH–PEG (80/20) (PV-EG82) demonstrated the most balanced mechanical performance and was chosen for irradiation. Gel fraction analysis indicated efficient EB-induced crosslinking, with the highest network density attained at 30 kGy (1 kGy/pass). Mechanical tests found that modest doses increased tensile strength, modulus, and surface hardness, whereas higher doses (>30 kGy) caused chain scission and property loss. FTIR spectra revealed structural rearrangements and new vibrational bands associated with crosslinking, whereas contact angle and SEM investigations revealed decreased hydrophilicity and a denser surface shape. Thermogravimetric measurement demonstrated the enhanced thermal stability of irradiated films compared to virgin samples. Together, these results reveal that EB irradiation offers a clean and controllable approach to modify the crosslinking, mechanical, thermal, and surface properties of PVOH–PEG hybrids, emphasizing their promise in advanced packaging, coatings, and biomedical applications.