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<p>Upgrading commercially available polyethylene to have both higher mechanical properties and surface hydrophilicity is of fundamental interest and practical importance, but the actual results usually suffer from a trade-off between mechanical performance and surface hydrophilicity. Herein, we report the preparation of eighteen high-density polyethylene (HDPE) blend materials <i>via</i> the simple physical blending with hydrophilic ethylene/<i>meta</i>-methoxystyrene (E-<i>m</i>MOS) copolymers (<b>P1, P2</b>, and <b>P3</b>) used as macromolecular additives. After adding low blend ratios of the E-<i>m</i>MOS copolymers (2 wt%, 5 wt% and 10 wt%), the tensile strength, toughness and hydrophilicity of the resultant HDPE blends simultaneously increased. HDPE(SABIC)/<b>P3</b> blend showed the optimal comprehensive improvement in tensile strength (41.2 MPa versus 31.1 MPa), elongation at break (1601% versus1083%), and hydrophilicity (water contact angle, 96.2° versus 106.4°) compared with commercial HDPE. SEM tests exhibited the HDPE/E-<i>m</i>MOS blends had good compatibilities. These HDPE materials also exhibited good processability, as evidenced by DSC and rheological measurements.</p>

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Upgrading Commercially Available Polyethylene to High-value Materials with Strong Mechanical Performance and Hydrophilicity by Blending with Ethylene/meta-Methoxystyrene Copolymers

  • 期刊论文

  • 发表日期：

    2026年7月20日

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  • Hui Tian,
  • Chun-Ji Wu,
  • Bao-Li Wang

摘要

Upgrading commercially available polyethylene to have both higher mechanical properties and surface hydrophilicity is of fundamental interest and practical importance, but the actual results usually suffer from a trade-off between mechanical performance and surface hydrophilicity. Herein, we report the preparation of eighteen high-density polyethylene (HDPE) blend materials via the simple physical blending with hydrophilic ethylene/meta-methoxystyrene (E-mMOS) copolymers (P1, P2, and P3) used as macromolecular additives. After adding low blend ratios of the E-mMOS copolymers (2 wt%, 5 wt% and 10 wt%), the tensile strength, toughness and hydrophilicity of the resultant HDPE blends simultaneously increased. HDPE(SABIC)/P3 blend showed the optimal comprehensive improvement in tensile strength (41.2 MPa versus 31.1 MPa), elongation at break (1601% versus1083%), and hydrophilicity (water contact angle, 96.2° versus 106.4°) compared with commercial HDPE. SEM tests exhibited the HDPE/E-mMOS blends had good compatibilities. These HDPE materials also exhibited good processability, as evidenced by DSC and rheological measurements.