Crystallization of Poly(ethylene oxide)-Based Triblock Copolymers in Films Swollen-Rich in Solvent Vapors

被引:4
作者
Babutan, Iulia [1 ,2 ]
Todor-Boer, Otto [3 ]
Atanase, Leonard Ionut [4 ,5 ]
Vulpoi, Adriana [1 ]
Botiz, Ioan [1 ,2 ]
机构
[1] Babes Bolyai Univ, Interdisciplinary Res Inst Bionano Sci, Cluj Napoca 400271, Romania
[2] Babes Bolyai Univ, Fac Phys, Cluj Napoca 400084, Romania
[3] Res Inst Analyt Instrumentat, INCDO INOE 2000, Cluj Napoca 400293, Romania
[4] Apollonia Univ Iasi, Fac Med Dent, Dept Biomat, Iasi 700511, Romania
[5] Acad Romanian Sci, Bucharest 050045, Romania
关键词
block copolymers; thin films; solvent vapor annealing; polymer crystallization; atomic force microscopy; EMISSION PROPERTIES; BLOCK; POLYMER;
D O I
10.3390/coatings13050918
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
In this study, we employed a polymer processing method based on solvent vapor annealing in a confined environment to swell-rich thin films of polybutadiene-b-poly(2-vinylpyridine)-b-poly(ethylene oxide) triblock copolymers and to promote their crystallization. As revealed by optical and atomic force microscopy, thin films of triblock copolymers containing a rather short crystalline poly(ethylene oxide) block that was massively obstructed by the other two blocks were unable to crystallize following the spin-casting process, and their further swelling in solvent vapors was necessary in order to produce polymeric crystals displaying a dendritic morphology. In comparison, thin films of triblock copolymers containing a much longer poly(ethylene oxide) block that was less obstructed by the other two blocks were shown to crystallize into dendritic structures right after the spin-casting procedure, as well as upon rich swelling in solvent vapors.
引用
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页数:15
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