Department of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces, Research Campus Golm, D-14424 Potsdam, Germany.
Macromol Rapid Commun. 2011 Nov 1;32(21):1753-8. doi: 10.1002/marc.201100421. Epub 2011 Aug 29.
Crystallization of poly(2-isobutyl-2-oxazoline) and poly(2-nonyl-2-oxazoline) is found to occur by room temperature annealing below the upper critical solution temperature in ethanol-water solvent mixtures. Both polymers produce similar self-assembled structures (see image), resembling the previously reported crystalline hierarchical structures obtained from hot aqueous poly(2-isopropyl-2-oxazoline) solutions above the lower critical solution temperature. These observations suggest that the crystallization induced self-assembly process is a rather general phenomenon occurring for semicrystalline polymers in liquid-liquid two phase systems.
聚（2-异丁基-2-恶唑啉）和聚（2-壬基-2-恶唑啉）在乙醇-水溶剂混合物中低于上临界溶液温度通过室温退火发现发生结晶。两种聚合物都产生类似的自组装结构（见图），类似于先前报道的从低于下临界溶液温度的热水性聚（2-异丙基-2-恶唑啉）溶液中获得的结晶分级结构。这些观察结果表明，结晶诱导的自组装过程是在液-液两相体系中半结晶聚合物中发生的一种相当普遍的现象。
