Hydrogen bonding assisted toughness enhancement of poly(lactide) blended with a bio-based polyamide elastomer of extremely low amounts
Hydrogen bonding assisted toughness enhancement of poly(lactide) blended with a bio-based polyamide elastomer of extremely low amounts
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氢键辅助增强与极少量生物基聚酰胺弹性体共混的聚丙交酯的韧性
DOI：
10.1016/j.apsusc.2019.144684
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发表时间：
2020-03
影响因子：
6.7
通讯作者：
Wang Zhongkai
中科院分区：
文献类型：
--
作者：
Zhang Yaqiong;Chen Jiawei;Peng Qiang;Song Lingzhi;Wang Zhigang;Wang Zhongkai
采用可持续生物基聚酰胺共聚物弹性体（PUDA-co-BUDA）与聚乳酸（PLA）共混增韧。令人惊讶的是，通过仅添加1重量%的PUDA-共-BUDA，PLA/PUDA-共-BUDA 99/1共混物表现出195%的高断裂伸长率，其比纯PLA长约23倍。通过添加极少量（不超过5wt%）的PUDA-co-BUDA，PLA/PUDA-co-BUDA共混物的断裂伸长率和拉伸韧性值与纯PLA相比显著提高，同时保持一定的透明性。好的方面是，对于这些共混物的杨氏模量和屈服强度值分别保持在1.0 GPa和50 MPa以上。扭矩分析和FTIR光谱表明，在熔融共混过程中没有反应性反应和PLA和PUDA-co-BUDA组分之间形成氢键。氢键作用促进了PUDA-co-BUDA相畴在PLA基体中的均匀分散，其尺寸小于2.0 μm。可持续生物基聚酰胺共聚物弹性体由于氢键相互作用而显示出潜在的增韧PLA的能力，这可能为PLA材料在生物医学、包装和汽车应用提供经济有效的前景。
A sustainable bio-based polyamide copolymer elastomer (PUDA-co-BUDA) was used to blend with polylactide (PLA) for the toughness enhancement purpose. Surprisingly, by adding only 1 wt% PUDA-co-BUDA, the PLA/PUDA-co-BUDA 99/1 blend exhibited a high elongation at break at 195%, which is about 23 times longer than that for neat PLA. By adding PUDA-co-BUDA of extremely low amounts (not exceeding 5 wt%), the elongation at break and tensile toughness values of PLA/PUDA-co-BUDA blends were significantly enhanced as compared with that of neat PLA, while certain transparency was kept. The nice aspect was that for these blends the Young's modulus and yield strength values remained above 1.0 GPa and 50 MPa, respectively. Torque analysis and FTIR spectra demonstrated the absence of reactive reactions during melt blending and the formation of hydrogen bonding between PLA and PUDA-co-BUDA components, respectively. Hydrogen bonding assisted homogeneous dispersion of plenty of PUDA-co-BUDA phase domains with micrometer sizes less than 2.0 μm in the PLA matrix. The sustainable bio-based polyamide copolymer elastomer showed a potential ability to toughen PLA due to hydrogen bonding interaction, which might provide an economical and effective prospect in the biomedical, packaging, and automotive applications for PLA materials.
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影响因子：
4.6
作者：
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通讯作者：
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作者：
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通讯作者：
Hillmyer, Marc A.
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4.6
作者：
Liu, Guang-Chen;He, Yi-Song;Wang, Yu-Zhong
通讯作者：
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