Effects of a special diluent as an agent of improving the crystallizability of poly(L-lactic acid)
Effects of a special diluent as an agent of improving the crystallizability of poly(L-lactic acid)
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DOI：
10.1038/s41428-018-0152-5
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发表时间：
2019-02-01
期刊：
影响因子：
2.8
通讯作者：
Sakurai, Shinichi
中科院分区：
文献类型：
--
作者：
Pham Thi Ngoc Diep;Mochizuki, Masatsugu;Sakurai, Shinichi
已经发现，一种特殊类型的稀释剂可以作为一种试剂，以改善聚（L-丙交酯）（PLLA）的结晶性。为了提出明确的实验结果来支持这样的能力，我们使用时间分辨小和广角X射线散射（SWAXS）遵循PLLA的等温结晶。WAXS结果表明，稀释剂对PLLA的结晶有促进作用，如诱导期缩短，结晶加速等。此外，在稀释剂存在下，还发现了δ相向α相的转变。在稀释剂的存在下，结晶薄片在其厚度方向上的生长被加速。进一步发现，稀释剂可以加速样品中晶体薄片堆叠的空间填充。
It has been found that a special type of diluent can act as an agent to improve the crystallizability of poly(L-lactide) (PLLA). To present clear experimental results to support such an ability, we used time-resolved small and wide-angle X-ray scattering (SWAXS) to follow the isothermal crystallization of PLLA. The WAXS results show the enhancing effects of the diluent on the crystallization of PLLA, such as the reduction of the induction period and the acceleration of crystallization Furthermore, the transformation from the delta phase to the alpha phase was also detected in the presence of the diluent. The growth of the crystalline lamellae in their thickness direction was accelerated in the presence of the diluent. It was further found that the diluent can accelerate the space filling of the stacks of crystalline lamellae in the specimen.