scholarly journals Exploiting Molecular Weight Distribution Shape to Tune Domain Spacing in Block Copolymer Thin Films

2018 ◽  
Vol 140 (13) ◽  
pp. 4639-4648 ◽  
Author(s):  
Dillon T. Gentekos ◽  
Junteng Jia ◽  
Erika S. Tirado ◽  
Katherine P. Barteau ◽  
Detlef-M. Smilgies ◽  
...  
Keyword(s):  
Thin Films ◽  
Molecular Weight ◽  
Block Copolymer ◽  
Molecular Weight Distribution ◽  
Weight Distribution ◽  
Distribution Shape

Effect of block molecular weight distribution on the structure formation in block copolymer/homopolymer blends

2011 ◽  
Vol 50 (2) ◽  
pp. 106-116 ◽  
Author(s):  
Jessica Listak ◽  
Xiaolong Jia ◽  
Andrzej Plichta ◽  
Mingjiang Zhong ◽  
Krzysztof Matyjaszewski ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Block Copolymer ◽  
Structure Formation ◽  
Molecular Weight Distribution ◽  
Weight Distribution ◽  
Homopolymer Blends

Achieving molecular weight distribution shape control and broad dispersities using RAFT polymerizations

2021 ◽  
Author(s):  
Stephanie I. Rosenbloom ◽  
Renee J. Sifri ◽  
Brett P. Fors
Keyword(s):  
Molecular Weight ◽  
Molecular Weight Distribution ◽  
Weight Distribution ◽  
Shape Control ◽  
Chain Transfer ◽  
Distribution Shape ◽  
Reversible Addition ◽  
Transfer Agents

Metered additions of chain transfer agents are used to control molecular weight distribution (MWD) features in reversible addition-fragmentation chain-transfer polymerizations, giving polymers with tailored MWD shapes and dispersities as high as 6.2.

scholarly journals Manipulation of Molecular Weight Distribution Shape as a New Strategy to Control Processing Parameters

2017 ◽  
Vol 38 (19) ◽  
pp. 1700352 ◽  
Author(s):  
Milena Nadgorny ◽  
Dillon T. Gentekos ◽  
Zeyun Xiao ◽  
S. Parker Singleton ◽  
Brett P. Fors ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Molecular Weight Distribution ◽  
Weight Distribution ◽  
Processing Parameters ◽  
Distribution Shape ◽  
New Strategy

scholarly journals Preparation of Quaternary Amphiphilic Block Copolymer PMA-b-P (NVP/MAH/St) and Its Application in Surface Modification of Aluminum Nitride Powders

Molecules ◽  
2021 ◽  
Vol 26 (19) ◽  
pp. 5884
Author(s):  
Yu Wang ◽  
Guangdong Zhu ◽  
Shun Wang ◽  
Jianjun Xie ◽  
Zhan Chen ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Block Copolymer ◽  
Aluminum Nitride ◽  
Molecular Weight Distribution ◽  
Weight Distribution ◽  
Hot Water ◽  
Amphiphilic Block Copolymer ◽  
Vinyl Pyrrolidone ◽  
Charge Transfer Complexes ◽  
Nuclear Magnetic Spectroscopy

Poly(methyl acrylate)-b-poly(N-vinyl pyrrolidone/maleic anhydride/styrene) (PMA-b-P (NVP/MAH/St)) quaternary amphiphilic block copolymer prepared by reversible addition-fragmentation chain transfer (RAFT) was used to improve the anti-hydrolysis and dispersion properties of aluminum nitride (AIN) powders that were modified by copolymers. Its structure was characterized by Fourier transform infrared spectroscopy (FT-IR) and Hydrogen nuclear magnetic spectroscopy (1H-NMR). The results demonstrate that the molecular weight distribution of the quaternary amphiphilic block copolymers is 1.35–1.60, which is characteristic of controlled molecular weight and narrow molecular weight distribution. Through charge transfer complexes, NVP/MAH/St produces a regular alternating arrangement structure. After being treated with micro-crosslinking, AlN powder modified by copolymer PMA-b-P(NVP/MAH/St) exhibits outstanding resistance to hydrolysis and can be stabilized in hot water at 50 °C for more than 14 h, and the agglomeration of powder particles was improved remarkably.

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