Scholarlink

<p>Citric acid–starch adhesives are sustainable biomass-derived adhesives that address the environmental concerns associated with formaldehyde-based adhesives. Glycerol is expected to promote hydrogen bonds with starch and lignocellulosic materials and ester linkages with citric acid, resulting in increased bonding contact. Thus, the purpose of this study was to investigate how a citric acid/starch/glycerol (CA/S/G) adhesive and the pressing temperature affected the characteristics of bamboo particleboard. Pressing was conducted at three different temperatures (160&#xa0;°C, 180&#xa0;°C, and 200&#xa0;°C) using CA/S/G mixtures with various weight ratios: 80/20/0, 75/20/5, 70/20/10, and 65/20/15. The target density, adhesive content, and pressing time were 0.8&#xa0;g/cm³, 30 wt% based on dry particles, and 10&#xa0;min, respectively. The best qualities in terms of meeting JIS A 5908 − 2015 type 18 standards were achieved with a pressing temperature of 180&#xa0;°C and a CA/S/G ratio of 65/20/15 (wt%). Fourier transform infrared analysis confirmed that the C = O peak, indicative of ester linkage formation, intensified with increasing glycerol content in the adhesive mixture, hence improving the mechanical strength of the particleboard. Although the hydrophilic characteristics of glycerol can influence the water absorption properties, its combination with high temperatures was anticipated to enhance the properties of particleboard. The bonding mechanism is expected to occur due to the hydroxyl groups in bamboo material participating in hydrogen bonding with citric acid, starch, and glycerol, as well as esterification reactions with citric acid. These findings showed that a mixture of citric acid, starch, and glycerol could be used as a potential natural adhesive for bamboo particleboard production.</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

A bio-esterified citric acid–starch–glycerol adhesive to enhance the mechanical and water resistance properties of bamboo particleboard

  • 期刊论文

  • 发表日期：

    2026年3月11日

查看全文
  • Erlina Nurul Aini,
  • Ragil Widyorini,
  • Greitta Kusuma Dewi,
  • Tibertius Agus Prayitno,
  • Riska Dwiyanna

摘要

Citric acid–starch adhesives are sustainable biomass-derived adhesives that address the environmental concerns associated with formaldehyde-based adhesives. Glycerol is expected to promote hydrogen bonds with starch and lignocellulosic materials and ester linkages with citric acid, resulting in increased bonding contact. Thus, the purpose of this study was to investigate how a citric acid/starch/glycerol (CA/S/G) adhesive and the pressing temperature affected the characteristics of bamboo particleboard. Pressing was conducted at three different temperatures (160 °C, 180 °C, and 200 °C) using CA/S/G mixtures with various weight ratios: 80/20/0, 75/20/5, 70/20/10, and 65/20/15. The target density, adhesive content, and pressing time were 0.8 g/cm³, 30 wt% based on dry particles, and 10 min, respectively. The best qualities in terms of meeting JIS A 5908 − 2015 type 18 standards were achieved with a pressing temperature of 180 °C and a CA/S/G ratio of 65/20/15 (wt%). Fourier transform infrared analysis confirmed that the C = O peak, indicative of ester linkage formation, intensified with increasing glycerol content in the adhesive mixture, hence improving the mechanical strength of the particleboard. Although the hydrophilic characteristics of glycerol can influence the water absorption properties, its combination with high temperatures was anticipated to enhance the properties of particleboard. The bonding mechanism is expected to occur due to the hydroxyl groups in bamboo material participating in hydrogen bonding with citric acid, starch, and glycerol, as well as esterification reactions with citric acid. These findings showed that a mixture of citric acid, starch, and glycerol could be used as a potential natural adhesive for bamboo particleboard production.