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Confined Crystal Melting in Edgeless Poly(l-lactic acid) Crystalsomes
ACS Macro Letters ( IF 5.1 ) Pub Date : 2020-11-20 , DOI: 10.1021/acsmacrolett.0c00693 Mark C. Staub 1 , Ruipeng Li 2 , Masafumi Fukuto 2 , Christopher Y. Li 1
ACS Macro Letters ( IF 5.1 ) Pub Date : 2020-11-20 , DOI: 10.1021/acsmacrolett.0c00693 Mark C. Staub 1 , Ruipeng Li 2 , Masafumi Fukuto 2 , Christopher Y. Li 1
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Polymer single crystals tend to be quasi two-dimensional (2D) lamellae and their small lateral surfaces are the starting points of lamella melting and thickening. However, the recently discovered crystalsomes, which are defined for hollow single crystal-like spherical shells, are edgeless, self-confined, and incommensurate with translational symmetry. This work concerns the structure and melting behavior of these edgeless crystalsomes. Poly(l-lactic acid) crystalsomes were grown using a miniemulsion solution crystallization method. Differential scanning calorimetry and in situ wide-angle X-ray diffraction were used to follow the structural evolution of the crystalsomes upon heating. Our results demonstrated that the structure and melting behavior of crystalsomes are curvature-dependent and significantly different from their flat crystal counterpart.
中文翻译：
无边聚（L-乳酸）晶体中的封闭晶体熔融
聚合物单晶往往是准二维（2D）薄片，其小的侧面是薄片熔化和增厚的起点。然而，最近发现的定义为空心单晶状球形壳的晶体是无边的，自封闭的并且与平移对称性不相称。这项工作涉及这些无边晶体的结构和熔化行为。聚（l使用细乳液溶液结晶法使β-乳酸）结晶体生长。使用差示扫描量热法和原位广角X射线衍射来追踪加热时晶体的结构演变。我们的结果表明，晶体的结构和熔化行为与曲率有关，并且与平面晶体的晶体和熔化行为显着不同。
更新日期：2020-12-15
中文翻译：
无边聚（L-乳酸）晶体中的封闭晶体熔融
聚合物单晶往往是准二维（2D）薄片，其小的侧面是薄片熔化和增厚的起点。然而，最近发现的定义为空心单晶状球形壳的晶体是无边的，自封闭的并且与平移对称性不相称。这项工作涉及这些无边晶体的结构和熔化行为。聚（l使用细乳液溶液结晶法使β-乳酸）结晶体生长。使用差示扫描量热法和原位广角X射线衍射来追踪加热时晶体的结构演变。我们的结果表明，晶体的结构和熔化行为与曲率有关，并且与平面晶体的晶体和熔化行为显着不同。
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