Scholarlink

<p>This work examines the influence of MOF-2 addition on the properties of poly(lactic acid) (PLA)/poly(butylene adipate-co-terephthalate) (PBAT) blend films designed for food packaging applications. The objective of this study is to assess how different MOF-2 loadings (3, 5, and 7 wt%) affect the mechanical behavior, degradation characteristics, and preservation-related performance of PLA/PBAT films. Surface analysis by AFM revealed changes in surface homogeneity and roughness with increasing MOF-2 content, while FTIR analysis showed no evidence of chemical bonding between the polymer matrix and the nanofiller. Mechanical testing indicated increased stiffness and microhardness, accompanied by moderate decreases in tensile strength and elongation at break, which may be associated with limited interfacial adhesion and partial nanofiller agglomeration. Thermal analyses suggested improved phase compatibility and increased crystallinity of the PLA/PBAT matrix upon MOF-2 incorporation. The presence of MOF-2 also led to higher water uptake and enhanced hydrolytic degradation under alkaline conditions, as well as increased biodegradation in soil and marine environments. Microbial degradation tests conducted in liquid and solid media indicated greater susceptibility to enzymatic activity, particularly in the presence of <i>Escherichia coli</i>. Application tests using bananas as a model fruit showed delayed ripening and reduced browning for films containing higher MOF-2 contents. Overall, the results indicate that MOF-2 incorporation modifies both the functional performance and degradation behavior of PLA/PBAT films, providing insights into the use of MOF-based nanofillers in biodegradable packaging materials.</p> Graphical Abstract <p></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

From structure to degradability: tailoring poly(lactic acid)/poly(butylene adipate-co-terephthalate) properties with metal–organic framework (MOF-2) for eco-responsive packaging applications

  • 期刊论文

  • 发表日期：

    2026年1月30日

查看全文
  • Fatima Benbelaid,
  • Boubkeur Seddik Bouakaz,
  • Abdelhai Aouaitia,
  • Hayet Ahlem Lezrag,
  • Erwan Vasseur,
  • Gilles Ausias,
  • Abderrahmane Habi

摘要

This work examines the influence of MOF-2 addition on the properties of poly(lactic acid) (PLA)/poly(butylene adipate-co-terephthalate) (PBAT) blend films designed for food packaging applications. The objective of this study is to assess how different MOF-2 loadings (3, 5, and 7 wt%) affect the mechanical behavior, degradation characteristics, and preservation-related performance of PLA/PBAT films. Surface analysis by AFM revealed changes in surface homogeneity and roughness with increasing MOF-2 content, while FTIR analysis showed no evidence of chemical bonding between the polymer matrix and the nanofiller. Mechanical testing indicated increased stiffness and microhardness, accompanied by moderate decreases in tensile strength and elongation at break, which may be associated with limited interfacial adhesion and partial nanofiller agglomeration. Thermal analyses suggested improved phase compatibility and increased crystallinity of the PLA/PBAT matrix upon MOF-2 incorporation. The presence of MOF-2 also led to higher water uptake and enhanced hydrolytic degradation under alkaline conditions, as well as increased biodegradation in soil and marine environments. Microbial degradation tests conducted in liquid and solid media indicated greater susceptibility to enzymatic activity, particularly in the presence of Escherichia coli. Application tests using bananas as a model fruit showed delayed ripening and reduced browning for films containing higher MOF-2 contents. Overall, the results indicate that MOF-2 incorporation modifies both the functional performance and degradation behavior of PLA/PBAT films, providing insights into the use of MOF-based nanofillers in biodegradable packaging materials.

Graphical Abstract