Effect of molecular mobility of pre-ordered phase on crystallization in microphase-separated lamellar morphology of strongly segregated crystalline-crystalline diblock copolymers

Nojima, Shiki; Higaki, Yasuki; Kaetsu, Katsuhiro; Ishige, Ryohei; Ohta, Nobuhiro; Masunaga, Hiroyasu; Hirai, Tomoyasu; Kojio, Ken; Takahara, Atsushi

doi:10.1016/j.polymer.2017.02.086

Cited by 9 publications

(8 citation statements)

References 32 publications

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“…The rigidity of the mesogenic portion imparts the rod‐like chain structure. Here, crystallization of the coil block is influenced by the phase behavior of the ordered microphase separation as well as the rigidity of the LC block . LC properties of these materials will not be discussed.…”

Section: Unique Block Copolymers and Their Assembliesmentioning

confidence: 99%

“…Steric interaction of LC block mesogens provides long persistence lengths that give the LC block rigid, rod‐like properties similar to conjugated polymer backbones. Some studies have been performed looking at the influence of these LC blocks on the crystallization of PCL blocks, PEO blocks, and PLLA …”

Section: Unique Block Copolymers and Their Assembliesmentioning

confidence: 99%

“…Bulk properties have been studied for PEO and PLLA . Poly(perfluorooctylethyl acrylate) (PFA‐C 8 ) is an LC polymer that exhibits a highly ordered smectic phase that resembles a disordered crystal phase due to low mobility .…”

Section: Unique Block Copolymers and Their Assembliesmentioning

confidence: 99%

“…On the other hand, in late‐stage isothermal crystallization, one‐dimensional growth of PEO lamellar crystals induced increases in PEO layer thickness, due to crystal thickening, and a reduction in thickness of the PFA‐C 8 layer. If, however, the PFA‐C 8 phase was preordered by holding at the transition temperature for PFA‐C 8 prior to isothermal crystallization at T c PEO (Figure , 2″), the PFA‐C 8 layer thickness remained relatively constant in all stages of PEO crystallization, resulting in less perfect PEO crystallization …”

Section: Unique Block Copolymers and Their Assembliesmentioning

confidence: 99%

“…The green‐colored descriptions indicate the structure parameter contrasts found between the two Routes. (Reproduced from with permission from Elsevier)…”

Section: Unique Block Copolymers and Their Assembliesmentioning

confidence: 99%

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Recent progress in block copolymer crystallization

Horn

Steffen

O'Connor

2018

Polymer Crystallization

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Block copolymers (BCPs) are important for technological advances in numerous industries, including but not limited to, electronics, biomedical, optics, environmental, and infrastructure. Because of their ubiquity, it is important to understand their hierarchical phase behavior to tune their macroscopic properties for efficient use. These macroscopic properties are derived from the microscopic self‐assembled structures. One unique form of hierarchical assembly exists when one or more of the polymeric blocks form lamellar crystals. These crystals are integral to understanding and predicting the macroscopic behavior. This review reports on recent advances in crystallization of BCPs, including bulk and solution assembly. Reports highlighting development in fundamental processes regarding crystallization mechanisms and behavior as well as for the design of practical applications are included.

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Section: Unique Block Copolymers and Their Assembliesmentioning

confidence: 99%

Section: Unique Block Copolymers and Their Assembliesmentioning

confidence: 99%

Section: Unique Block Copolymers and Their Assembliesmentioning

confidence: 99%

Section: Unique Block Copolymers and Their Assembliesmentioning

confidence: 99%

“…The green‐colored descriptions indicate the structure parameter contrasts found between the two Routes. (Reproduced from with permission from Elsevier)…”

Section: Unique Block Copolymers and Their Assembliesmentioning

confidence: 99%

See 3 more Smart Citations