• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >Polyvinyl alcohol and acidity-regulating KH2PO4 synergistically accelerated degradation of PBAT/PLA composites
【24h】

Polyvinyl alcohol and acidity-regulating KH2PO4 synergistically accelerated degradation of PBAT/PLA composites

机译：聚乙烯醇和酸度调节KH2PO4协同加速的PBAT / PLA复合材料的降解

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

Poly(butylene adipate-co-terephthalate) (PBAT)/polylactic acid (PLA) composites were prepared by water-soluble polyvinyl alcohol (PVA) and degradation-promoting agent (DPA) which were made from acidity-regulating KH2PO4 and halloysite by a physical layer-by-layer coating method. The effect of PVA and DPA on the biodegradation of PBAT/PLA composites in the cross-sectional morphology, thermal properties, molecular structure, due to degradation was evaluated using a host of characterization methods. The results showed that PVA had a good solubilizing effect on the composite system and improved the overall compatibility. DPA had little effect on the compatibility, crystallinity, and thermal stability of the composite system, but greatly accelerated the degradation. The interior of composite material containing DPA (Com-DPA) was shown to be severely damaged after 29 weeks of degradation, which was attributed to preferential degradation of amorphous regions of the composite by ester hydrolysis. Our results demonstrated the PVA and DPA worked synergistically to promote swelling and diffusivity of degradation products, and provided an acid environment for enhancing ester hydrolysis. This technology may have good prospects for accelerated degradation of materials in agricultural applications.
机译：以酸性调节剂KH2PO4和埃洛石为原料，采用物理分层包覆法制备了水溶性聚乙烯醇（PVA）和降解促进剂（DPA），制备了聚己二酸丁二醇酯-对苯二甲酸酯（PBAT）/聚乳酸（PLA）复合材料。通过多种表征方法，评估了PVA和DPA对PBAT/PLA复合材料因降解而产生的横截面形态、热性能和分子结构的生物降解作用。结果表明，PVA对复合体系有良好的增溶作用，提高了复合体系的整体相容性。DPA对复合体系的相容性、结晶度和热稳定性影响不大，但大大加速了降解。降解29周后，含有DPA（Com DPA）的复合材料内部显示出严重损坏，这是由于酯水解使复合材料的非晶区域优先降解所致。结果表明，PVA和DPA协同促进降解产物的溶胀和扩散，并为促进酯水解提供了酸性环境。这项技术可能在农业应用中加速材料降解方面具有良好的前景。

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