Highly Anisotropic Glassy Polystyrenes Are Flexible.
Highly Anisotropic Glassy Polystyrenes Are Flexible.
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DOI：
10.1021/acsmacrolett.8b00485
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发表时间：
2018-09
影响因子：
5.8
通讯作者：
Qian Huang;J. Madsen;Liyun Yu;Anine L. Borger;S. R. Johannsen;K. Mortensen;O. Hassager
中科院分区：
文献类型：
--
作者：
Qian Huang;J. Madsen;Liyun Yu;Anine L. Borger;S. R. Johannsen;K. Mortensen;O. Hassager
我们表明，拉伸聚苯乙烯的熔融速率快于逆劳斯时间，然后在玻璃化转变温度以下快速淬火，结果是灵活的材料，并保持至少六个月。在机械测试后，在柔性样品中观察到取向的微/纳米纤维。这些纤维可能与熔融拉伸中高度排列的分子有关。在室温下，柔性聚苯乙烯的拉伸强度超过300 MPa。
We show that stretching polystyrene melts at a rate faster than the inverse Rouse time, followed by rapid quenching below the glass transition temperature, results in a material that is flexible and remains so for at least six months. Oriented micro/nanofibers are observed in the flexible samples after the mechanical tests. The fibers are probably related to the highly aligned molecules in melt stretching. At room temperature, a tensile strength over 300 MPa has been achieved for the flexible polystyrenes.