scholarly journals pH-Responsive non-ionic diblock copolymers: protonation of a morpholine end-group induces an order–order transition

2016 ◽  
Vol 7 (1) ◽  
pp. 79-88 ◽  
Author(s):  
N. J. W. Penfold ◽  
J. R. Lovett ◽  
N. J. Warren ◽  
P. Verstraete ◽  
J. Smets ◽  
...  
Keyword(s):  
Diblock Copolymer ◽  
Diblock Copolymers ◽  
Order Transition ◽  
Ph Responsive ◽  
End Group

Protonation of a terminal morpholine group on PGMA50-PHPMA140 diblock copolymer nanoparticles induces a reversible worm-to-sphere order-order transition.

scholarly journals Stimulus-responsive non-ionic diblock copolymers: protonation of a tertiary amine end-group induces vesicle-to-worm or vesicle-to-sphere transitions

2017 ◽  
Vol 8 (1) ◽  
pp. 272-282 ◽  
Author(s):  
Nicholas J. W. Penfold ◽  
Joseph R. Lovett ◽  
Pierre Verstraete ◽  
Johan Smets ◽  
Steven P. Armes
Keyword(s):  
Tertiary Amine ◽  
Diblock Copolymer ◽  
Diblock Copolymers ◽  
Solution Ph ◽  
Hydroxypropyl Methacrylate ◽  
Stimulus Responsive ◽  
End Group

Morpholine-functionalised poly(glycerol monomethacrylate)-poly(2-hydroxypropyl methacrylate) diblock copolymer vesicles are transformed into worms or spheres on lowering the solution pH.

scholarly journals pH-Responsive diblock copolymers with two different fluorescent labels for simultaneous monitoring of micellar self-assembly and degree of protonation

2018 ◽  
Vol 9 (21) ◽  
pp. 2964-2976 ◽  
Author(s):  
Jeppe Madsen ◽  
George Madden ◽  
Efrosyni Themistou ◽  
Nicholas J. Warren ◽  
Steven P. Armes
Keyword(s):  
Diblock Copolymer ◽  
Self Assembly ◽  
Diblock Copolymers ◽  
Fluorescent Labels ◽  
Ph Responsive

Facile labelling of both blocks of a pH-responsive diblock copolymer with different fluorophores allows monitoring of polymer aggregation and deprotonation.

Effect of end group on the micelle properties of diblock copolymers of ethylene oxide and 1,2-butylene oxide

2001 ◽  
Vol 3 (18) ◽  
pp. 4037-4043 ◽  
Author(s):  
Antonis Kelarakis ◽  
Shao-Min Mai ◽  
Vasiliki Havredaki ◽  
V. Mark Nace ◽  
Colin Booth
Keyword(s):  
Ethylene Oxide ◽  
Diblock Copolymers ◽  
End Group

Dual pH-responsive micelles with both charge-conversional property and hydrophobic–hydrophilic transition for effective cellular uptake and intracellular drug release

2016 ◽  
Vol 7 (12) ◽  
pp. 2202-2208 ◽  
Author(s):  
Shuai Li ◽  
Zhouxiang Zhao ◽  
Wei Wu ◽  
Chunmei Ding ◽  
Jianshu Li
Keyword(s):  
Drug Delivery ◽  
Drug Release ◽  
Cellular Uptake ◽  
Diblock Copolymers ◽  
Effective Drug ◽  
Ph Responsive ◽  
A Charge

Two types of diblock copolymers are synthesized to construct dual pH-responsive micelles with a charge-conversional property for effective drug delivery.

Mechanical Properties of Blends of Crystallizable Polybutadienes Containing Amorphous Polybutadiene Diblock Copolymers

1994 ◽  
Vol 67 (2) ◽  
pp. 342-347
Author(s):  
Moira Marx Nir ◽  
Robert E. Cohen
Keyword(s):  
Mechanical Properties ◽  
Molecular Weight ◽  
Surface Area ◽  
Diblock Copolymer ◽  
Diblock Copolymers ◽  
Tensile Failure ◽  
Interfacial Surface ◽  
Failure Properties ◽  
Enhanced Properties

Abstract Tensile failure properties of syndiotactic 1,2 polybutadiene/trans 1,4 polybutadiene crystalline blends are improved by addition of 5–10% amorphous 1,2 polybutadiene/1,4 polybutadiene diblock copolymer. The effect of block molecular weight and microphase behavior of the diblock copolymer was investigated. Heterogeneous diblocks enhance blend properties to a greater extent than homogeneous diblocks. In blends with enhanced properties, percent coverage of interfacial surface area by diblock is on the order of 10%.

The Ordered Bicontinuous Double Diamond Structure in Binary Blends of Diblock Copolymer and Homopolymer.

1989 ◽  
Vol 171 ◽  
Author(s):  
Karen I. Winey ◽  
Edwin L. Thomas
Keyword(s):  
Molecular Weight ◽  
Diblock Copolymer ◽  
Diblock Copolymers ◽  
Composition Range ◽  
Volume Fraction ◽  
Diamond Structure ◽  
Binary Blends ◽  
Resultant Effect ◽  
Strong Segregation ◽  
Double Diamond

ABSTRACTWe report the observation of the ordered bicontinuous double diamond (OBDD) structure in binary blends of poly(styrene-isoprene) diblock copolymer and homopolystyrene. The overall polystyrene volume fraction range is 64 - 67 PSvol% for the OBDD structure in binary blends of a lamellar diblock (SI 27/22) and a homopolymer (14.0 hPS). This composition range is approximately within the polystyrene volume fraction range established for pure diblock copolymers in the strong segregation regime having the OBDD structure. Ordered lamellae are observed at approximately 65 PSvol% when the homopolystyrene molecular weight is greater than the molecular weight of the polystyrene block of the copolymer. This observation is discussed in terms of the decreased degree of mixing between the homopolymer and the corresponding block and the resultant effect on the interfacial curvature.

scholarly journals pH-Responsive Schizophrenic Diblock Copolymers Prepared by Polymerization-Induced Self-Assembly

2017 ◽  
Vol 50 (16) ◽  
pp. 6108-6116 ◽  
Author(s):  
Sarah L. Canning ◽  
Thomas J. Neal ◽  
Steven P. Armes
Keyword(s):  
Self Assembly ◽  
Diblock Copolymers ◽  
Ph Responsive

Self-Assemble Behavior of Amphiphilic Diblock Copolymer of Methoxy Poly (Ethylene Glycol)/Polyester

2011 ◽  
Vol 295-297 ◽  
pp. 11-15
Author(s):  
Hao Zhou ◽  
Qing Hong Liang ◽  
Xiang Ke Shi ◽  
Li Hua Lu ◽  
Li Qun Zhang ◽  
...  
Keyword(s):  
Polyethylene Glycol ◽  
Light Scattering ◽  
Diblock Copolymer ◽  
Diblock Copolymers ◽  
Average Diameter ◽  
Core Shell ◽  
Amphiphilic Diblock Copolymer ◽  
Amphiphilic Diblock Copolymers ◽  
Methoxy Polyethylene Glycol ◽  
Solution Polycondensation

Amphiphilic diblock copolymers based on methoxy polyethylene glycol (MePEG), 1, 6-hexanediol and maleic anhydride with different molar composition were synthesized by solution polycondensation. Self-assemble behavior of amphiphilic diblock copolymer in different solvents by dialyzing technique was discussed. The micelle morphologhy was observed by TEM. It was found that well core-shell MePEG1900/Polyester 2162 copolymer nanoparticles can be formed by self-assemble in acetone solution. In addition, the size of nanospheres measured using dynamic light scattering exhibited a narrow monodisphere size distribution and an average diameter in the ranger of less than 200nm.

pH-responsive micelles and vesicles formed from a water-soluble schizophrenic diblock copolymer

2014 ◽  
Vol 45 (6) ◽  
pp. 3117-3123 ◽  
Author(s):  
Ryusuke Enomoto ◽  
Mehul Khimani ◽  
Pratap Bahadur ◽  
Shin-ichi Yusa
Keyword(s):  
Diblock Copolymer ◽  
Water Soluble ◽  
Ph Responsive

Mussel-inspired construction of thermo-responsive double-hydrophilic diblock copolymers-decorated reduced graphene oxide as effective catalyst supports for highly dispersed superfine Pd nanoparticles

Nanoscale ◽  
2018 ◽  
Vol 10 (26) ◽  
pp. 12487-12496 ◽  
Author(s):  
Haichao Duan ◽  
Yu Yang ◽  
Jianhua Lü ◽  
Changli Lü
Keyword(s):  
Graphene Oxide ◽  
Catalytic Activity ◽  
Reduced Graphene Oxide ◽  
Diblock Copolymer ◽  
Diblock Copolymers ◽  
Pd Nanoparticles ◽  
Catalyst Supports ◽  
High Catalytic Activity ◽  
Reduced Graphene ◽  
Highly Dispersed

We report a facile, mussel-inspired construction of a thermo-responsive diblock copolymer-anchored rGO support for superfine PdNPs with high catalytic activity.

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