Polymer Crystallization Confined in One, Two, or Three Dimensions

Loo, Yueh Lin; Register, Richard A.; Ryan, Anthony J.; Dee, Gregory T.

doi:10.1021/ma011521p

Cited by 324 publications

(386 citation statements)

References 38 publications

(107 reference statements)

Supporting

Mentioning

367

Contrasting

Order By: Relevance

“…This makes the crystallizable block copolymers representative systems having confined crystallization behavior, especially in the strong segregation regime [52]. Confined crystallization has been widely observed in the diblock copolymers having double crystalline blocks, such as PEO-b-PCL [112][113][114][115][116], PLLA-b-PEO [117][118][119][120][121][122], PLLA-b-PCL [123][124][125], poly(p-dioxanone) (PPDX)-b-PCL [126][127][128], polyolefin-based block copolymers [129][130][131][132][133][134][135], and so on. The confined crystallization kinetics and crystalline morphology of such block copolymers have been extensively studied.…”

Section: Crystalline Morphology Of Polymer Segments Confined In Blockmentioning

confidence: 99%

Crystalline and Spherulitic Morphology of Polymers Crystallized in Confined Systems

Xie

Bao

et al. 2017

Crystals

View full text Add to dashboard Cite

Due to the effects of microphase separation and physical dimensions, confinement widely exists in the multi-component polymer systems (e.g., polymer blends, copolymers) and the polymers having nanoscale dimensions, such as thin films and nanofibers. Semicrystalline polymers usually show different crystallization kinetics, crystalline structure and morphology from the bulk when they are confined in the nanoscale environments; this may dramatically influence the physical performances of the resulting materials. Therefore, investigations on the crystalline and spherulitic morphology of semicrystalline polymers in confined systems are essential from both scientific and technological viewpoints; significant progresses have been achieved in this field in recent years. In this article, we will review the recent research progresses on the crystalline and spherulitic morphology of polymers crystallized in the nanoscale confined environments. According to the types of confined systems, crystalline, spherulitic morphology and morphological evolution of semicrystalline polymers in the ultrathin films, miscible polymer blends and block copolymers will be summarized and reviewed.

show abstract

Section: Crystalline Morphology Of Polymer Segments Confined In Blockmentioning

confidence: 99%

Crystalline and Spherulitic Morphology of Polymers Crystallized in Confined Systems

Xie

Bao

et al. 2017

Crystals

View full text Add to dashboard Cite

show abstract

“…In particular, crystallization in confinement has received great interest both experimentally [1][2][3][4][5][6][7][8][9][10][11] and through simulation 12 in recent years. One reason for exploring confinement effects is that confined systems are becoming increasingly widespread, as devices and materials are constrained due to miniaturization.…”

Section: Introductionmentioning

confidence: 99%

Orientation Control and Crystallization in a Soft Confined Phase Separated Block Copolymer

Alharbe

Hobbs

2017

Macromolecules

Self Cite

View full text Add to dashboard Cite

Phone: +44 (0)114 22 24532Fax: +44 (0)114 22 23555 ABSTRACTMicrodomain orientation and crystallization were examined in a crystalline-amorphous diblock copolymer, hydrogenated poly (high-1,4-butadiene)-b-poly(high-3,4-isoprene) (E/MB), which forms cylinders of the crystallizable block (polyethylene, E). Atomic force microscopy (AFM) was used to locally control the orientation of the E cylinders. The orientation process and subsequent crystallization behavior were investigated in situ as a function of temperature by AFM. Fully confined crystallization was observed within the range of 25-50 °C, with templated and breakout crystallization observed at higher crystallization temperature. The growth rate of templated crystallization along and perpendicular to the existing microdomain structure was measured and the ratio between these rates found to increase rapidly with decreasing temperature with a change from ~4.8 at 100 °C to ~8 at 97 °C. Two maxima in the degree of orientation of the crystallized regions were found, one at relatively small supercoolings (e.g. 95 °C) where the differential in growth rate along and across microdomain boundaries is high, and one at high supercoolings (25-50 °C) where crystallization is completely dominated by nucleation.

show abstract

“…Loo et al [26][27][28][29] oriented the cylinder morphology of the polyethylene (PE)-block-PS copolymer by shear flow during melt-extrusion through channel die. The orientation along the extrusion axis could be locked by oriented crystallization of PE block.…”

Section: Introductionmentioning

confidence: 99%

Structural arrangement of crystalline/amorphous phases of polyethylene‐block‐polystyrene copolymer as induced by orientation techniques

Uehara

Yoshida

Kakiage

et al. 2006

J Polym Sci B Polym Phys

View full text Add to dashboard Cite

ABSTRACT.Polyethylene-block-polystyrene (PE-block-PS) copolymer film having bicontinuous crystalline/amorphous phases were tensile-drawn under various conditions for structural arrangement of these phases. When a draw was made below melting temperature of PE crystalline phase (95 o C), the bicontinuous structure was gradually destroyed with increasing strain, due to the lower ductility of PS having glass-transition temperature around 100 o C. Correspondingly, the necking phenomenon was clearly recognizable during draw. In contrast, a draw near melting temperature of PE crystalline phase gave the less orientation of PE phases, resulting in homogeneous deformation with the lower draw stress.These results indicated that the modification of the lower ductility of PS was required for the effective orientation of these phases. Here, a solvent swelling technique was applied to improve PS deformability even below its glass-transition temperature. Tensile drawing after such treatment could successfully induce the orientation of both crystalline/amorphous phases. A transition from necking to homogenous deformation was also observed in stress/strain behavior.

show abstract

Polymer Crystallization Confined in One, Two, or Three Dimensions

Cited by 324 publications

References 38 publications

Crystalline and Spherulitic Morphology of Polymers Crystallized in Confined Systems

Crystalline and Spherulitic Morphology of Polymers Crystallized in Confined Systems

Orientation Control and Crystallization in a Soft Confined Phase Separated Block Copolymer

Structural arrangement of crystalline/amorphous phases of polyethylene‐block‐polystyrene copolymer as induced by orientation techniques

Contact Info

Product

Resources

About