Polymer cubosomes of block copolymers having cross-linkable soft hydrophobic blocks

2019 ◽  
Vol 10 (27) ◽  
pp. 3778-3785 ◽  
Author(s):  
Jiwon Kim ◽  
Misun Yoon ◽  
Seon-Mi Jin ◽  
Jiyeon Lee ◽  
Yunju La ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Block Copolymers ◽  
Long Range ◽  
Pore Networks ◽  
Crystalline Order ◽  
Bicontinuous Cubic ◽  
Mesoporous Structures

Inverse bicontinuous cubic mesophases of block copolymers are an emerging class of mesoporous structures consisting of block copolymer bilayers, in which well-defined reticulated pore networks are intertwined in a long-range crystalline order.

ENGINEERING ORIENTATION IN BLOCK COPOLYMERS FOR APPLICATION TO PROSTHETIC HEART VALVES

2010 ◽  
Vol 03 (04) ◽  
pp. 249-252 ◽  
Author(s):  
JOANNA STASIAK ◽  
GEOFF D. MOGGRIDGE ◽  
ADRIANO ZAFFORA ◽  
ANNA PANDOLFI ◽  
MARIA L. COSTANTINO
Keyword(s):  
Mechanical Properties ◽  
Block Copolymer ◽  
Block Copolymers ◽  
Long Range ◽  
Heart Valves ◽  
Mechanical Response ◽  
Mechanical Performance ◽  
Prosthetic Heart Valves ◽  
Anisotropic Mechanical Properties ◽  
Butadiene Styrene

This study demonstrates how the mechanical performance of polymeric material can be enhanced by morphology and phase orientation of block copolymers to achieve desired anisotropic mechanical properties. The material used was a new Kraton block copolymer consisting of styrene-isoprene-butadiene-styrene blocks having cylindrical morphology. We report a method of achieving long range uniaxial as well as biaxial orientation of block copolymer. Each microstructural organization results in a specific mechanical performance, which depends on the direction of the applied deformation. The method of tailoring mechanical properties by engineering microstructure may be successfully utilized to applications requiring anisotropic mechanical response, such as prosthetic heart valves.

Guide Pattern for Long-Range-Order Nanofabrication of Self-Assembled Block Copolymers

2010 ◽  
Vol 459 ◽  
pp. 124-128 ◽  
Author(s):  
Takashi Akahane ◽  
Miftakhul Huda ◽  
You Yin ◽  
Sumio Hosaka
Keyword(s):  
Electron Beam ◽  
Block Copolymer ◽  
Block Copolymers ◽  
Long Range ◽  
Range Order ◽  
Long Range Order ◽  
Self Assembled ◽  
Guide Lines

In this paper, we report two kinds of guide patterns precisely created by electron beam drawing. These guide patterns are expected to precisely control the arrangement of nanodots self-assembled from block copolymer (BCP) in order to obtain long-range-order nanofabrication. The first guide pattern is comprised only of a post lattice. The second guide pattern adds guide lines to the post lattice. The added guide lines are expected to better control the location and orientation of the BCP nanodots. We succeeded in fabricating these two kinds of guide patterns for 22-nm- and 33-nm-pitch BCP nanodots.

Block Copolymer Concentration Gradient and Solvent Effects on Nanostructuring of Thin Epoxy Coatings Modified with Epoxidized Styrene–Butadiene–Styrene Block Copolymers

2012 ◽  
Vol 45 (3) ◽  
pp. 1483-1491 ◽  
Author(s):  
José Angel Ramos ◽  
Leandro H. Espósito ◽  
Raquel Fernández ◽  
Iñaki Zalakain ◽  
Silvia Goyanes ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Block Copolymers ◽  
Solvent Effects ◽  
Concentration Gradient ◽  
Epoxy Coatings ◽  
Copolymer Concentration ◽  
Styrene Butadiene Styrene ◽  
Styrene Butadiene ◽  
Butadiene Styrene

Interactions in block copolymers in solution: The effect of hetero-contacts on the segmental interactions in block copolymers of poly(isoprene : styrene) in solution

1969 ◽  
Vol 22 (8) ◽  
pp. 1649 ◽  
Author(s):  
JR Urwin
Keyword(s):  
Block Copolymer ◽  
Block Copolymers ◽  
Linear Relation ◽  
Sequence Block ◽  
Cluster Integrals ◽  
Excluded Volumes

Binary cluster integrals or excluded volumes for chemically different segment pairs in block copolymers of poly(isoprene : styrene) have been calculated from the equation derived by Froelich and Benoit for a two- sequence block copolymer. Expansion factors have been recalculated assuming a linear relation for [η]θ with respect to composition employing published values for polystyrene and polyisoprene. The results are discussed in relation to possible conformations of block copolymers.

Long-Range Ordering of Block Copolymer Cylinders Driven by Combining Thermal Annealing and Substrate Functionalization

ACS Nano ◽  
2013 ◽  
Vol 7 (3) ◽  
pp. 2000-2011 ◽  
Author(s):  
Ming-Shiuan She ◽  
Ting-Ya Lo ◽  
Rong-Ming Ho
Keyword(s):  
Block Copolymer ◽  
Thermal Annealing ◽  
Long Range ◽  
Long Range Ordering

scholarly journals Characterizing block-copolymer micelles used in nanomedicines via solution static scattering techniques

2021 ◽  
Author(s):  
Isamu Akiba ◽  
Kazuo Sakurai
Keyword(s):  
Block Copolymer ◽  
Block Copolymers ◽  
Static Solution ◽  
Theoretical Background ◽  
Hydrophobic Drugs ◽  
Safety And Efficacy ◽  
Critical Quality Attributes ◽  
Regulatory Authorities ◽  
Block Copolymer Micelles ◽  
Copolymer Micelles

AbstractBlock copolymers are well recognized as excellent nanotools for delivering hydrophobic drugs. The formulation of such delivery nanoparticles requires robust characterization and clarification of the critical quality attributes correlating with the safety and efficacy of the drug before applying to regulatory authorities for approval. Static solution scattering from block copolymers is one such technique. This paper first outlines the theoretical background and current models for analyzing this scattering and then presents an overview of our recent studies on block copolymers.

Bicontinuous Cubic Block Copolymer Photonic Crystals

2002 ◽  
Vol 14 (24) ◽  
pp. 1850-1853 ◽  
Author(s):  
A.M. Urbas ◽  
M. Maldovan ◽  
P. DeRege ◽  
E.L. Thomas
Keyword(s):  
Block Copolymer ◽  
Photonic Crystals ◽  
Bicontinuous Cubic

scholarly journals Engineering block copolymer materials for patterning ultra-low dimensions

2020 ◽  
Vol 5 (10) ◽  
pp. 1642-1657
Author(s):  
Cian Cummins ◽  
Guillaume Pino ◽  
Daniele Mantione ◽  
Guillaume Fleury
Keyword(s):  
Thin Film ◽  
Block Copolymer ◽  
Block Copolymers ◽  
Low Dimensions ◽  
Processing Strategies ◽  
Synthetic Routes ◽  
Film Processing ◽  
Thin Film Processing

Recently engineered high χ-low N block copolymers for nanolithography are evaluated. Synthetic routes together with thin film processing strategies are highlighted that could enable the relentless scaling for logic technologies at sub-10 nanometres.

scholarly journals Poly(N-(2-hydroxypropyl)methacrylamide)–valproic acid conjugates as block copolymer nanocarriers

2017 ◽  
Vol 8 (34) ◽  
pp. 4983-4987 ◽  
Author(s):  
Jawaher A. Alfurhood ◽  
Hao Sun ◽  
Christopher P. Kabb ◽  
Bryan S. Tucker ◽  
James H. Matthews ◽  
...  
Keyword(s):  
Valproic Acid ◽  
Block Copolymer ◽  
Block Copolymers ◽  
Polymer Carrier ◽  
Biological Compatibility ◽  
Hydroxypropyl Methacrylamide

We report nanoassemblies based on block copolymers of N-(2-hydroxypropyl)methacrylamide (HPMA) in which drug cleavage enhances the biological compatibility of the original polymer carrier by regeneration of HPMA units.

Effect of block copolymer architecture on compatibility: 2. Epoxidized styrene-butadiene star block copolymers with chlorinated polymers

Polymer ◽  
1994 ◽  
Vol 35 (7) ◽  
pp. 1425-1432 ◽  
Author(s):  
Stathis N. Koklas ◽  
Kostas G. Gravalos ◽  
Nikos K. Kalfoglou
Keyword(s):  
Block Copolymer ◽  
Block Copolymers ◽  
Star Block Copolymers ◽  
Styrene Butadiene
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