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首页> 外文期刊>Journal of Polymers and the Environment >The Investigation of the Toughening Mechanism of PHBV7 PBAT with a Novel Hyperbranched EthylenediamineTriazine Polymer Based Modifier: The Formation of the Transition Layer and the Microcrosslinking Structure
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The Investigation of the Toughening Mechanism of PHBV7 PBAT with a Novel Hyperbranched EthylenediamineTriazine Polymer Based Modifier: The Formation of the Transition Layer and the Microcrosslinking Structure

机译：新型超支化乙二胺三嗪聚合物基改性剂对PHBV7 PBAT增韧机理的研究：过渡层的形成和微交联结构

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摘要

A new type of designed hyperbranched ethylenediamine trazine polymer (HBETP) is successfully synthesized and characterized based upon NMR and GPC. The prepared HBETP is used to modify the poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV)/poly(butylene adipate-co-terephthalate) (PBAT) blends. The effect of HBETP on the microstructure, mechanical properties and thermal properties of the blends is studied. The results indicate that upon addition of 1.0 wt% of HBETP, the impact strength of the PHBV/PBAT blends is increased by 47.1%; a dagger T-g of the blends decreases from 53.2 to 49.9 A degrees C. These results, together with the morphology analysis of the fractured surface of the blends, conclude the formation of the transition layer between PHBV and PBAT. Also, the XRD result shows that the addition of HBETP can limit the growth of the PHBV crystals and causes the decrease of both the crystallinity and the grain crystalline size. The DSC result demonstrates that the addition of HBETP mainly affects the crystallization of the HB-HV binary eutectic region within PHBV. The mechanism of PHBV/PBAT toughening is due to the formation of the strong physical hydrogen bonding and the chemical micro-crosslinking between HBETP and PHBV/PBAT, which is proposed based on XPS characterization.
机译：基于NMR和GPC成功地合成了新型设计的超支化乙二胺三嗪聚合物（HBETP）。制备的HBETP用于改性聚（羟基丁酸酯-共-羟基戊酸酯）（PHBV）/聚（己二酸丁二酯-对苯二甲酸对苯二甲酸酯）（PBAT）的混合物。研究了HBETP对共混物的微观结构，机械性能和热性能的影响。结果表明，在加入1.0 wt％的HBETP后，PHBV / PBAT共混物的冲击强度提高了47.1％。共混物的匕首T-g从53.2 A降低到49.9A。这些结果，加上共混物断裂表面的形态分析，推断出PHBV和PBAT之间过渡层的形成。另外，XRD结果表明，HBETP的加入可以限制PHBV晶体的生长，并导致结晶度和晶粒尺寸的减小。 DSC结果表明，HBETP的添加主要影响PHBV内HB-HV二元共晶区的结晶。 PHBV / PBAT增韧的机理是由于强物理氢键的形成以及HBETP与PHBV / PBAT之间的化学微交联所致，这是根据XPS表征提出的。

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  • 来源
    《Journal of Polymers and the Environment》 |2018年第10期|4158-4167|共10页
  • 作者

    Jin Yujuan; Wang Ee; Weng Yunxuan; Men Shuang; Dong Yuping; Sima Yangyang; Huang Zhigang;

  • 作者单位

    Beijing Technol & Business Univ, Sch Mat & Mech Engn, Beijing 100048, Peoples R China;

    Beijing Technol & Business Univ, Sch Mat & Mech Engn, Beijing 100048, Peoples R China;

    Beijing Technol & Business Univ, Sch Mat & Mech Engn, Beijing 100048, Peoples R China;

    Shenyang Ligong Univ, Sch Mat Sci & Engn, Shenyang 110159, Liaoning, Peoples R China;

    Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China;

    Beijing Technol & Business Univ, Sch Mat & Mech Engn, Beijing 100048, Peoples R China;

    Beijing Technol & Business Univ, Sch Mat & Mech Engn, Beijing 100048, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Transition layer; Micro-crosslinking; HBETP; PHBV/PBAT; Toughness;

    机译：过渡层;微交联;HBETP;PHBV / PBAT;韧性;

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