Scholarlink

<p>This investigation aims to devise a streamlined method for crafting environmentally sustainable, biodegradable, and hydrophobic paper employing bio-based polymers. Initially, bleached softwood Kraft pulp (BSKP) underwent refining to achieve a Canadian Standard Freeness (CSF) within the 300–350 mL range. Fibers treated with carboxymethyl cellulose (CMC) in conjunction with electrolytes to increase strength. A fixed proportion of these treated fibers (30% of the dry weight of the suspension) was integrated into the hand sheet suspension to create hand sheets with a grammage of 60 GSM. Subsequently, beeswax (BW) emulsions in varying concentrations (1%, 5%, 10%, 15%, and 20%) were prepared in water, and hand sheets were subjected to dip-coating in these emulsions for 2&#xa0;min. Following this, the treated hand sheets underwent air drying at room temperature and subsequent annealing at diverse temperatures (25, 60, 70, 80, 90&#xa0;°C) for 12&#xa0;h. Outcomes demonstrated that beeswax concentration and annealing temperature notably influenced the hydrophobicity process. Optimal hydrophobicity, as indicated by the highest water contact angle (WCA) of 132.89°, was achieved with hand sheets treated with 15% beeswax and annealed at 70&#xa0;°C. Furthermore, beeswax treatment substantially augmented paper thickness, grammage, and apparent density. Notably, the water absorption rate decreased to 67.99% for hand sheets treated with 15% beeswax. However, the incremental incorporation of beeswax content reduced tensile strength values compared to untreated hand sheets. The findings of this study present promising avenues for utilizing such papers in packaging applications, particularly in moisture-resistant packaging contexts.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Fabrication of eco-friendly hydrophobic cellulose paper via paper dip-coating in beeswax for improved barrier characteristics

  • 期刊论文

  • 发表日期：

    2025年10月26日

查看全文
  • Moghadase Akbari,
  • Elyas Afra,
  • Seyed Majid Zabihzadeh,
  • Mohammadreza Dehghani Firouzabadi

摘要

This investigation aims to devise a streamlined method for crafting environmentally sustainable, biodegradable, and hydrophobic paper employing bio-based polymers. Initially, bleached softwood Kraft pulp (BSKP) underwent refining to achieve a Canadian Standard Freeness (CSF) within the 300–350 mL range. Fibers treated with carboxymethyl cellulose (CMC) in conjunction with electrolytes to increase strength. A fixed proportion of these treated fibers (30% of the dry weight of the suspension) was integrated into the hand sheet suspension to create hand sheets with a grammage of 60 GSM. Subsequently, beeswax (BW) emulsions in varying concentrations (1%, 5%, 10%, 15%, and 20%) were prepared in water, and hand sheets were subjected to dip-coating in these emulsions for 2 min. Following this, the treated hand sheets underwent air drying at room temperature and subsequent annealing at diverse temperatures (25, 60, 70, 80, 90 °C) for 12 h. Outcomes demonstrated that beeswax concentration and annealing temperature notably influenced the hydrophobicity process. Optimal hydrophobicity, as indicated by the highest water contact angle (WCA) of 132.89°, was achieved with hand sheets treated with 15% beeswax and annealed at 70 °C. Furthermore, beeswax treatment substantially augmented paper thickness, grammage, and apparent density. Notably, the water absorption rate decreased to 67.99% for hand sheets treated with 15% beeswax. However, the incremental incorporation of beeswax content reduced tensile strength values compared to untreated hand sheets. The findings of this study present promising avenues for utilizing such papers in packaging applications, particularly in moisture-resistant packaging contexts.