Polyisobutylene Oligomers as Tools for Iron Oxide Nanoparticle Solubilization,Macromolecules

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Polyisobutylene Oligomers as Tools for Iron Oxide Nanoparticle Solubilization
Macromolecules ( IF 5.1 ) Pub Date : 2017-02-13 00:00:00 , DOI: 10.1021/acs.macromol.6b02407
Chih-Gang Chao ₁ , Manyam Praveen Kumar ₂ , Nadia Riaz ₁ , Raquel T. Khanoyan ₁ , Sherzod T. Madrahimov ₂ , David E. Bergbreiter ₁

Affiliation

A series of terminally functionalized polyisobutylene (PIB) derivatives were synthesized and tested as agents for magnetic nanoparticle solubilization. PIB-bound catechol was found to be the best functionalized polyolefin at effecting such solubilization based on UV–vis spectroscopic absorbance measurements and thermogravimetric analysis. The PIB-modified magnetic nanoparticles obtained from grafting reactions contain up to 32 wt % of MNPs. They easily disperse in nonpolar and modestly polar organic solvents. The high loading (>50 wt %) of the PIB-modified magnetic nanoparticles even in alkane solvents makes the resulting solutions magnetically susceptible. This was illustrated by preliminary work where PIB-modified MNPs formed solutions with heptane that could be magnetically separated from water. These PIB-modified magnetic nanoparticles were also shown to be highly soluble in low melting polyethylene waxes and in liquid poly(α-olefin)s.

中文翻译：

聚异丁烯低聚物作为氧化铁纳米粒子增溶的工具

合成了一系列末端官能化的聚异丁烯（PIB）衍生物，并测试了它们作为磁性纳米粒子增溶剂。基于UV-vis光谱吸收率测量和热重分析，发现与PIB结合的邻苯二酚是实现这种溶解的最佳官能化聚烯烃。通过接枝反应获得的PIB改性的磁性纳米颗粒包含高达32重量％的MNP。它们容易分散在非极性和中等极性的有机溶剂中。即使在烷烃溶剂中，PIB改性的磁性纳米颗粒的高负载量（> 50 wt％）也使所得溶液具有磁性。初步工作表明了这一点，其中PIB修饰的MNP与庚烷形成溶液，该庚烷可以与水磁性分离。

更新日期：2017-02-13

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