Formation of POSS-POSS interactions in polyurethanes: From synthesis, morphologies to shape memory properties of materials
Formation of POSS-POSS interactions in polyurethanes: From synthesis, morphologies to shape memory properties of materials
复制标题
聚氨酯中 POSS-POSS 相互作用的形成：从材料的合成、形态到形状记忆性能
DOI：
10.1016/j.polymer.2018.11.026
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发表时间：
2019-01
期刊：
影响因子：
4.6
通讯作者：
Zheng S.
中科院分区：
文献类型：
--
作者：
Zhao B.;Xu S.;Adeel M.;Zheng S.
本文报道了以七苯基笼型倍半硅氧烷（POSS）为侧基的线型有机-无机聚氨酯的合成。首先合成了一种新型的POSS二醇，然后以POSS二醇和1，4-丁二醇为扩链剂，合成了不同POSS含量的有机-无机聚氨酯，凝胶渗透色谱（GPC）分析表明得到了高分子量的产物。小角X射线散射（SAXS）和透射电子显微镜（TEM）研究表明，在有机-无机聚氨酯中，通过POSS-POSS相互作用形成了尺寸为10 - 20 nm的球形POSS微区。与普通聚氨酯相比，有机-无机聚氨酯显示出增加的玻璃化转变温度。由于POSS-POSS相互作用的形成，聚氨酯的力学性能在杨氏模量和拉伸强度方面得到显着改善。更重要的是，有机-无机聚氨酯显示出良好的形状记忆性能，这与普通聚氨酯形成鲜明对比。通过POSS-POSS相互作用形成POSS微区，促进了链间相互作用，从而提高了材料的形状记忆性能。
In this contribution, we reported the synthesis of linear organic-inorganic polyurethanes with heptaphenyl polyhedral oligomeric silsesquioxane (POSS) as the side groups. First, a novel POSS diol was synthesized; then the POSS diol as well as 1,4-butanediol was used as the chain extender to obtain the organic-inorganic polyurethanes with various content of POSS. Gel permeation chromatography (GPC) showed that the high-molecular-weight products were obtained. Small angel X-ray scattering (SAXS) and transmission electron microscopy (TEM) showed that in the organic-inorganic polyurethanes the spherical POSS microdomains with the size of 10–20 nm were formedviaPOSS-POSS interactions. Compared to plain polyurethane, the organic-inorganic polyurethanes displayed increased glass transition temperatures. Owing to the formation of POSS-POSS interactions, the mechanical properties of the polyurethanes were significantly improved in terms of Young's modulus and tensile strength. More importantly, the organic-inorganic polyurethanes displayed good shape memory properties, which was in marked contrast to plain polyurethane. The improved shape memory properties are attributable to the formation of the POSS microdomainsviaPOSS-POSS interactions, which promoted the inter-chain interactions.
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DOI：
10.1002/pola.26836
发表时间：
2013-10
期刊：
Journal of Polymer Science Part A
影响因子：
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作者：
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通讯作者：
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DOI：
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发表时间：
2006-03
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DOI：
10.1201/9781482270365-21
发表时间：
2017
期刊：
影响因子：
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作者：
Aron Preis
通讯作者：
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影响因子：
5.5
作者：
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DOI：
10.1016/c2013-0-00140-5
发表时间：
2016
期刊：
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影响因子：
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作者：
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