Scholarlink

<p>Overcoming the strong sensitivity of starch film to water is essential for its wide application. This study investigated the incorporation of octenyl succinate starch (OS) as a homologous hydrophobic modifier into hydroxypropyl distarch phosphate/poly(butylene adipate-co-terephthalate) (PBAT) blown films. OS established hydrogen bonding interactions between with hydroxypropyl distarch phosphate, competitive binding with glycerol, PBAT terminal groups, and water molecules. OS addition (≤ 5% <i>w/w</i>) improved matrix compatibility and interfacial uniformity, whereas excessive OS induced phase separation and microstructural defects, causing brittleness and reduced moisture barrier. Increasing OS content enhanced the films’ surface hydrophobicity from 55.8° to 97.2°, and reduced non-bound water due to shielding of hydroxyl groups. Although the films with OS exhibited improved water resistance and surface hydrophobicity, but excessive OS negatively impacted structural and barrier performance, highlighting the need for formulation balance in high-throughput processing. Overall, this study provides a reasonable design idea and reference for the improvement of hydrophobicity of such starch/PBAT films.</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

Construction of a High-Hydrophobic Surface for High-Content Hydroxypropyl Distarch phosphate/PBAT Blown Films Based on a Homologous Hydrophobic Component

  • 期刊论文

  • 发表日期：

    2025年11月3日

查看全文
  • Qiantong Wang,
  • Bing Wang,
  • Hao Wang,
  • Shan Gao,
  • Arif Rashid

摘要

Overcoming the strong sensitivity of starch film to water is essential for its wide application. This study investigated the incorporation of octenyl succinate starch (OS) as a homologous hydrophobic modifier into hydroxypropyl distarch phosphate/poly(butylene adipate-co-terephthalate) (PBAT) blown films. OS established hydrogen bonding interactions between with hydroxypropyl distarch phosphate, competitive binding with glycerol, PBAT terminal groups, and water molecules. OS addition (≤ 5% w/w) improved matrix compatibility and interfacial uniformity, whereas excessive OS induced phase separation and microstructural defects, causing brittleness and reduced moisture barrier. Increasing OS content enhanced the films’ surface hydrophobicity from 55.8° to 97.2°, and reduced non-bound water due to shielding of hydroxyl groups. Although the films with OS exhibited improved water resistance and surface hydrophobicity, but excessive OS negatively impacted structural and barrier performance, highlighting the need for formulation balance in high-throughput processing. Overall, this study provides a reasonable design idea and reference for the improvement of hydrophobicity of such starch/PBAT films.