Scholarlink

<p>Cellulose acetate (CA) is a common derivative of cellulose that is utilised in many production processes, including the fabrication of biodegradable plastic film. Previous studies mostly focused on producing CA and its bioplastic film using kapok cellulose with a single acetylation setting. The impact of various manufacturing circumstances on the resulting CA and CA thin film using kapok cellulose has not been studied. In this study, kapok cellulose was transformed into CA using varying amounts of glacial acetic acid (17.5, 20, 22.5&#xa0;mL), acetic anhydride (5, 7.5, 10&#xa0;mL), and different acetylation durations (30, 45, 60&#xa0;min). The FTIR study revealed the presence of acetyl groups in the CAs, thereby verifying the conversion. All of the generated CAs had three primary acetyl groups, whilst CA generated at 20&#xa0;mL acetic acid, 10&#xa0;mL acetic anhydride, and 60&#xa0;min acetylation exhibited the most intense bands. SEM was utilised to assess the impact of independent factors on changes in surface structure and particle size. The biodegradability of CA films was investigated using soil media, and the percentage of mass loss was quantified by measuring it. The maximum level of degradability attained was a 62.5% reduction in mass over 4&#xa0;months. The thermal stability of these films was assessed by TGA, which revealed that the film treated with 5&#xa0;mL of acetic anhydride exhibited the greatest stability with a rate of 17.39%/min. Ensuring a suitable combination of all three manufacturing parameters is essential for attaining the highest level of acetylation in high-quality CA.</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

Effect of acetylation on cellulose acetate and bioplastic film produced from kapok fibre

  • 期刊论文

  • 发表日期：

    2025年3月4日

查看全文
  • Jia Jun Poon,
  • Choon Yoong Cheok,
  • Mei Ching Tan

摘要

Cellulose acetate (CA) is a common derivative of cellulose that is utilised in many production processes, including the fabrication of biodegradable plastic film. Previous studies mostly focused on producing CA and its bioplastic film using kapok cellulose with a single acetylation setting. The impact of various manufacturing circumstances on the resulting CA and CA thin film using kapok cellulose has not been studied. In this study, kapok cellulose was transformed into CA using varying amounts of glacial acetic acid (17.5, 20, 22.5 mL), acetic anhydride (5, 7.5, 10 mL), and different acetylation durations (30, 45, 60 min). The FTIR study revealed the presence of acetyl groups in the CAs, thereby verifying the conversion. All of the generated CAs had three primary acetyl groups, whilst CA generated at 20 mL acetic acid, 10 mL acetic anhydride, and 60 min acetylation exhibited the most intense bands. SEM was utilised to assess the impact of independent factors on changes in surface structure and particle size. The biodegradability of CA films was investigated using soil media, and the percentage of mass loss was quantified by measuring it. The maximum level of degradability attained was a 62.5% reduction in mass over 4 months. The thermal stability of these films was assessed by TGA, which revealed that the film treated with 5 mL of acetic anhydride exhibited the greatest stability with a rate of 17.39%/min. Ensuring a suitable combination of all three manufacturing parameters is essential for attaining the highest level of acetylation in high-quality CA.