Regulation of the cis-1,4- and trans-1,4-Polybutadiene Multiblock Copolymers via Chain Shuttling Polymerization Using a Ternary Neodymium Organic Sulfonate Catalyst

2017 ◽  
Vol 50 (20) ◽  
pp. 7887-7894 ◽  
Author(s):  
Quanquan Dai ◽  
Xuequan Zhang ◽  
Yanming Hu ◽  
Jianyun He ◽  
Ce Shi ◽  
...  
Keyword(s):  
Multiblock Copolymers ◽  
Chain Shuttling Polymerization

In-Depth Analysis of the Nonuniform Chain Microstructure of Multiblock Copolymers from Chain-Shuttling Polymerization

2021 ◽  
Author(s):  
Gaia Urciuoli ◽  
Antonio Vittoria ◽  
Giovanni Talarico ◽  
Davide Luise ◽  
Claudio De Rosa ◽  
...  
Keyword(s):  
Multiblock Copolymers ◽  
Depth Analysis ◽  
Chain Shuttling Polymerization

Morphological studies of linear (AB)n multiblock copolymers and their blends

1992 ◽  
Vol 50 (1) ◽  
pp. 384-385
Author(s):  
Richard J. Spontak ◽  
Steven D. Smith ◽  
Arman Ashraf
Keyword(s):  
Electron Microscopy ◽  
Microphase Separation ◽  
Multiblock Copolymers ◽  
First Order ◽  
Morphological Studies ◽  
Transmission Electron ◽  
First Order Phase Transition ◽  
Covalently Bonded ◽  
Total Molecular Weight ◽  
First Order Phase

Block copolymers are composed of sequences of dissimilar chemical moieties covalently bonded together. If the block lengths of each component are sufficiently long and the blocks are thermodynamically incompatible, these materials are capable of undergoing microphase separation, a weak first-order phase transition which results in the formation of an ordered microstructural network. Most efforts designed to elucidate the phase and configurational behavior in these copolymers have focused on the simple AB and ABA designs. Few studies have thus far targeted the perfectly-alternating multiblock (AB)n architecture. In this work, two series of neat (AB)n copolymers have been synthesized from styrene and isoprene monomers at a composition of 50 wt% polystyrene (PS). In Set I, the total molecular weight is held constant while the number of AB block pairs (n) is increased from one to four (which results in shorter blocks). Set II consists of materials in which the block lengths are held constant and n is varied again from one to four (which results in longer chains). Transmission electron microscopy (TEM) has been employed here to investigate the morphologies and phase behavior of these materials and their blends.

Super2- Structures in Polydisperse Multiblock-Copolymers

1997 ◽  
Vol 7 (10) ◽  
pp. 1489-1497 ◽  
Author(s):  
A. N. Semenov
Keyword(s):  
Multiblock Copolymers

Toward Olefin Multiblock Copolymers with Tailored Properties: A Molecular Perspective

2021 ◽  
pp. 2100003
Author(s):  
Yousef Mohammadi ◽  
Mohammad Reza Saeb ◽  
Alexander Penlidis ◽  
Esmaiel Jabbari ◽  
Florian J. Stadler ◽  
...  
Keyword(s):  
Multiblock Copolymers

Multiblock Copolymers by Thiol Addition Across Norbornene

2014 ◽  
Vol 3 (5) ◽  
pp. 453-457 ◽  
Author(s):  
Catherine N. Walker ◽  
Joel M. Sarapas ◽  
Vanessa Kung ◽  
Ashley L. Hall ◽  
Gregory N. Tew
Keyword(s):  
Multiblock Copolymers

Simulation of phase separation in melts of reacting multiblock copolymers

2011 ◽  
Vol 53 (12) ◽  
pp. 1207-1216 ◽  
Author(s):  
A. A. Gavrilov ◽  
D. V. Guseva ◽  
Ya. V. Kudryavtsev ◽  
P. G. Khalatur ◽  
A. V. Chertovich
Keyword(s):  
Phase Separation ◽  
Multiblock Copolymers

Formation of microphase-separated structure with half pitch less than 5.0nm formed by multiblock copolymers for nanolithographic application

2016 ◽  
Author(s):  
T. Kosaka ◽  
Y. Kawaguchi ◽  
T. Himi ◽  
T. Shimizu ◽  
K. Hirahara ◽  
...  
Keyword(s):  
Multiblock Copolymers

Tricomponent Supramolecular Multiblock Copolymers withTunable Composition via Sequential Seeded Growth

2021 ◽  
Author(s):  
Aritra Sarkar ◽  
Ranjan Sasmal ◽  
Angshuman Das ◽  
Akhil Venugopal ◽  
Sarit Agasti ◽  
...  
Keyword(s):  
Multiblock Copolymers ◽  
Seeded Growth
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