Molecular composites composed of castor oil‐modified poly(ε‐caprolactone) and self‐assembled hydroxystearic acid fibers
Molecular composites composed of castor oil‐modified poly(ε‐caprolactone) and self‐assembled hydroxystearic acid fibers
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蓖麻油改性聚(ε-己内酯)和自组装羟基硬脂酸纤维组成的分子复合材料
DOI：
10.1002/polb.22022
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
K. Kaneko
中科院分区：
文献类型：
--
作者：
M. Shibata;N. Teramoto;K. Kaneko
将（R）-12-羟基硬脂酸（HSA）与通过在蓖麻油存在下使ε-己内酯开环聚合而制备的蓖麻油改性的聚（ε-己内酯）（CO-PCL）在100 ℃下混合后，将混合物逐渐冷却至室温以得到固化的CO-PCL/HSA复合物。CO-PCL/HSA样品在约67-71 °C下显示出放热峰，其低于HSA的熔点（76.8 °C），表明形成了介晶HSA聚集体。CO-PCL/HSA的流变学测量揭示了在从熔体冷却过程期间在约67-55 °C下形成HSA有机凝胶。此外，在冷却阶段对CO-PCL/HSA的偏振和正常光学显微镜分析显示，在约60 °C下形成各向异性纤维材料，然后纤维网络在基质聚合物上传播。CO-PCL/HSA复合材料的弯曲模量和储能模量随着HSA含量的增加而增加。在冷却过程中在60 °C下退火2小时的CO-PCL/HSA复合材料比未退火的样品具有更高的弯曲和储能模量。© 2010 Wiley Periodicals，Inc.聚合物科学杂志B部分：聚合物物理48：1281-1289，2010
After (R)‐12‐hydroxystearic acid (HSA) was mixed at 100 °C with the castor oil‐modified poly(ε‐caprolactone) (CO‐PCL) prepared by the ring‐opening polymerization of ε‐caprolactone in the presence of castor oil, the mixture was gradually cooled to room temperature to give a solidified CO‐PCL/HSA composite. The CO‐PCL/HSA sample showed an exothermic peak at around 67–71 °C which was lower than the melting point of HSA (76.8 °C), indicating the formation of mesogenic HSA aggregates. The rheological measurement of the CO‐PCL/HSA revealed the formation of HSA organogel at around 67–55 °C during the cooling process from the melt. Furthermore, the polarized and normal optical microscopic analyses of CO‐PCL/HSA on the cooling stage revealed that anisotropic fibrous materials are formed at around 60 °C and then the fibrous network propagated over the matrix polymer. The flexural modulus and storage modulus of the CO‐PCL/HSA composite increased with increasing HSA content. The CO‐PCL/HSA composite annealed at 60 °C for 2 h on the cooling process had a higher flexural and storage modulus than the sample without annealing. © 2010 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 48: 1281–1289, 2010
影响因子：
8.6
作者：
Hanabusa, K;Hiratsuka, K;Shirai, H
通讯作者：
Shirai, H