Scholarlink

<p>Reactive compatibilization has been widely applied to enhance the compatibility of polymer blends, thereby improving their mechanical properties. However, it generally reduces the chain mobility and regularity, often leading to slower polymer crystallization. Here, we demonstrate that reactive compatibilization in poly(lactic acid)/poly(butylene adipate-<i>co</i>-terephthalate) (PLA/PBAT) blends unexpectedly promotes PLA matrix crystallization during injection molding, in contrast to the retarded kinetics observed in differential scanning calorimetry isothermal crystallization studies. The phase morphology, rheological behavior, and crystalline structure were systematically analyzed to elucidate markedly different crystallization kinetics under static and shear fields. The potential mechanism underlying crystallization enhancement is attributed to PBAT domain refinement and viscosity increase induced by reactive compatibilization, which, under shear flow, create favorable conditions for crystallization by enhancing PBAT fibril nucleation and retarding the relaxation of oriented PLA chains. This study offers new perspectives on the effect of reactive compatibilization on the polymer crystallization behavior.</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

Revisiting the Effect of Reactive Compatibilization on Polymer Crystallization: From Static Suppression to Shear-induced Promotion

  • 期刊论文

  • 发表日期：

    2026年2月4日

查看全文
  • Bao-Gou Wu,
  • Xiao-Hu Bing,
  • Qian Ren,
  • Lan Ding,
  • Ji-Zhang Li,
  • Wen-Ge Zheng,
  • Long Wang

摘要

Reactive compatibilization has been widely applied to enhance the compatibility of polymer blends, thereby improving their mechanical properties. However, it generally reduces the chain mobility and regularity, often leading to slower polymer crystallization. Here, we demonstrate that reactive compatibilization in poly(lactic acid)/poly(butylene adipate-co-terephthalate) (PLA/PBAT) blends unexpectedly promotes PLA matrix crystallization during injection molding, in contrast to the retarded kinetics observed in differential scanning calorimetry isothermal crystallization studies. The phase morphology, rheological behavior, and crystalline structure were systematically analyzed to elucidate markedly different crystallization kinetics under static and shear fields. The potential mechanism underlying crystallization enhancement is attributed to PBAT domain refinement and viscosity increase induced by reactive compatibilization, which, under shear flow, create favorable conditions for crystallization by enhancing PBAT fibril nucleation and retarding the relaxation of oriented PLA chains. This study offers new perspectives on the effect of reactive compatibilization on the polymer crystallization behavior.