Results 21 to 30 of about 92,115 (282)

Fabrication routes for one-dimensional nanostructures via block copolymers

open access: yesNano Convergence, 2017
Nanotechnology is the field which deals with fabrication of materials with dimensions in the nanometer range by manipulating atoms and molecules. Various synthesis routes exist for the one, two and three dimensional nanostructures. Recent advancements in
Maithri Tharmavaram   +2 more
doaj   +1 more source

Comment on “Quantify the contribution of chain length heterogeneity on block copolymer self-assembly”

open access: yesGiant, 2021
The effects of molecular weight distribution on the self-assembly of lamella-forming AB-diblock copolymers with polydisperse A-blocks are examined using the self-consistent field theory applied to the freely-jointed chain (FJC) model of polymers.
Chi To Lai, An-Chang Shi
doaj   +1 more source

Stereocomplex formation in ABA triblock copolymers of poly(lactide) (A) and poly(ethylene glycol) (B) [PDF]

open access: yes, 1995
Two series of triblock copolymers of poly(ethylene glycol) (PEG, number-average molecular weight [bar M ]n = 6000) and poly(L-lactide) (PLLA) or poly(D-lactide) (PDLA) were prepared by ring-opening polymerization of lactide initiated by PEG end groups ...
Ankone, Marc J.K.   +3 more
core   +2 more sources

Separation of Poly(styrene-block-t-butyl methacrylate) Copolymers by Various Liquid Chromatography Techniques

open access: yesThe Scientific World Journal, 2012
The separation of a mixture of three poly(styrene-block-t-butyl methacrylate) copolymers (PS-b-PtBMA), consisting of polystyrene (PS) blocks of similar length and t-butyl methacrylate (PtBMA) blocks of different lengths, was performed using various ...
Tina Šmigovec Ljubič   +3 more
doaj   +1 more source

Phospholipid-mimicking block, graft, and block-graft copolymers for phase-transition microbubbles as ultrasound contrast agents

open access: yesFrontiers in Pharmacology, 2022
Background: Lipid and polymer microbubbles (MBs) are widely used as ultrasound contrast agents in clinical diagnosis, and possess great potential in ultrasound-mediated therapy due to their drug loading function.
Jianbo Huang   +3 more
doaj   +1 more source

Stereo block copolymers of L- and D-lactides [PDF]

open access: yes, 1990
Sequential diblock copolymers composed of L- and D-lactic acid residues were synthesized through a living ring-opening polymerization of L- and D-lactide initiated by aluminium tris(2-propanolate).
Dijkstra, Pieter J.   +2 more
core   +3 more sources

Phase Behavior of Melts of Diblock-Copolymers with One Charged Block [PDF]

open access: yes, 2019
In this work we investigated the phase behavior of melts of block-copolymers with one charged block by means of dissipative particle dynamics with explicit electrostatic interactions.
Chertovich, Alexander V.   +2 more
core   +2 more sources

Highly Efficient One-Pot Synthesis of COS-Based Block Copolymers by Using Organic Lewis Pairs

open access: yesMolecules, 2018
A one-pot synthesis of block copolymer with regioregular poly(monothiocarbonate) block is described via metal-free catalysis. Lewis bases such as guanidine, quaternary onium salts, and Lewis acid triethyl borane (TEB) were equivalently combined and used ...
Jia-Liang Yang   +4 more
doaj   +1 more source

Synthesis of Fluorinated Amphiphilic Block Copolymers Based on PEGMA, HEMA, and MMA via ATRP and CuAAC Click Chemistry

open access: yesInternational Journal of Polymer Science, 2014
Synthesis of fluorinated amphiphilic block copolymers via atom transfer radical polymerization (ATRP) and Cu(I) catalyzed Huisgen 1,3-dipolar cycloaddition (CuAAC) was demonstrated.
Fatime Eren Erol   +3 more
doaj   +1 more source

Density Functional Theory for Block Copolymer Melts and Blends

open access: yes, 2004
We derive an expression for the free energy of the blends of block copolymers expressed as a functional of the density distribution of the monomer of each block.
Doi, Masao, Uneyama, Takashi
core   +1 more source

Home - About - Disclaimer - Privacy