Bionanocomposites from renewable resources:: Epoxidized linseed oil-polyhedral oligomeric silsesquioxanes hybrid materials
Bionanocomposites from renewable resources:: Epoxidized linseed oil-polyhedral oligomeric silsesquioxanes hybrid materials
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DOI：
10.1021/bm060703u
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发表时间：
2006-12-11
影响因子：
6.2
通讯作者：
Cadiz, Virginia
中科院分区：
文献类型：
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作者：
Lligadas, Gerard;Ronda, Joan C.;Cadiz, Virginia
本研究关注一类新的可再生资源的生物纳米复合材料的制备和性能。将环氧亚麻油（ELO）与3-缩水甘油基丙基七异丁基-T8-多面体低聚倍半硅氧烷（G-POSS）（2，5，10 wt %）进行交联，采用傅里叶变换红外光谱（FTIR）、动态机械热分析（DMTA）、热重分析（TGA）和扫描电子显微镜（SEM）对POSS增强的油基聚合物网络进行表征。对于2重量%的G-POSS纳米复合材料，通过SEM没有观察到POSS聚集体。结果表明，在含有5和10 wt % G-POSS的纳米复合材料中，POSS笼的增强作用使复合材料的玻璃化转变温度和储能模量均高于不含POSS的油基聚合物网络。
This study is concerned with the preparation and properties of a new class of bionanocomposites from renewable resources. Epoxidized linseed oil (ELO) and 3-glycidylpropylheptaisobutyl-T8-polyhedral oligomeric silsesquioxane (G-POSS) (2, 5, and 10 wt %) were cross-linked, and Fourier transform infrared spectroscopy (FTIR), dynamic mechanical thermal analysis (DMTA), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM) were employed to characterize the POSS-reinforced oil-based polymer networks. No POSS aggregates were observed for the 2 wt % G-POSS nanocomposite by SEM. POSS-rich particles with diameters of several nanometers were observed in the nanocomposites with 5 and 10 wt % G-POSS. Enhanced glass transition temperatures and storage moduli of the networks in the glassy state and rubber plateau were observed to be higher than those of the POSS-free oil based polymer network, due to the reinforcement effect of POSS cages.