• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Polymers and the Environment >In Situ Compatibilization of Biopolymer Ternary Blends by Reactive Extrusion with Low-Functionality Epoxy-Based Styrene-Acrylic Oligomer
【24h】

In Situ Compatibilization of Biopolymer Ternary Blends by Reactive Extrusion with Low-Functionality Epoxy-Based Styrene-Acrylic Oligomer

机译：低官能度的基于环氧的苯乙烯-丙烯酸低聚物的反应挤出原位增容生物聚合物三元共混物

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The present study reports on the use of low-functionality epoxy-based styrene-acrylic oligomer (ESAO) to compatibilize immiscible ternary blends made of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV), polylactide (PLA), and poly(butylene adipate-co-terephthalate) (PBAT). The addition during melt processing of low-functionality ESAO at two parts per hundred resin (phr) of biopolymer successfully changed the soften inclusion phase in the blend system to a thinner morphology, yielding biopolymer ternary blends with higher mechanical ductility and also improved oxygen barrier performance. The compatibilization achieved was ascribed to the in situ formation of a newly block terpolymer, i.e. PHBV-b-PLA-b-PBAT, which was produced at the blend interface by the reaction of the multiple epoxy groups present in ESAO with the functional terminal groups of the biopolymers. This chemical reaction was mainly linear due to the inherently low functionality of ESAO and the more favorable reactivity of the epoxy groups with the carboxyl groups of the biopolymers, which avoided the formation of highly branched and/or cross-linked structures and thus facilitated the films processability. Therefore, the reactive blending of biopolymers at different mixing ratios with low-functionality ESAO represents a straightforward methodology to prepare sustainable plastics at industrial scale with different physical properties that can be of interest in, for instance, food packaging applications.
机译：本研究报告了使用低官能度环氧基苯乙烯-丙烯酸低聚物（ESAO）来相容由聚（3-羟基丁酸酯-co-3-羟基戊酸酯）（PHBV），聚丙交酯（PLA）和聚（己二酸丁二酯-对苯二甲酸丁二酯）（PBAT）。在熔融加工过程中，以每100份树脂中200份生物聚合物的低官能度ESAO的添加量成功地将共混体系中的软化夹杂物相改变为更薄的形态，从而获得具有更高机械延展性并改善了氧气阻隔性能的生物聚合物三元共混物。达到的相容性归因于新嵌段共聚物PHBV-b-PLA-b-PBAT的原位形成，该嵌段共聚物是通过ESAO中存在的多个环氧基与官能端基反应而在共混界面形成的生物聚合物。该化学反应主要是线性的，这归因于ESAO固有的低官能度以及环氧基与生物聚合物的羧基之间更有利的反应性，从而避免了形成高度支化和/或交联的结构，从而促进了薄膜的形成。可加工性。因此，生物聚合物在不同混合比例下与低官能度ESAO的反应性共混代表了一种简单的方法，可以在工业规模上制备具有不同物理特性的可持续塑料，例如食品包装应用。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号