AI Article Synopsis
- The study showcases a new method for polymerizing N-vinylformamide (NVF) using purple light, resulting in polymers with specific weights and low variability.
- High accuracy in the polymer's structure is confirmed through advanced mass spectrometry techniques and experiments that extend the polymer chain.
- The process is demonstrated by creating and analyzing a new diblock copolymer, which can be further transformed into a pH-responsive material through selective hydrolysis.
Article Abstract
Photo-iniferter reversible addition-fragmentation chain transfer (PI-RAFT) polymerization of N-vinylformamide (NVF) is demonstrated by using purple light. PNVFs with predetermined molar masses and narrow molar mass distributions are obtained. High RAFT chain-end fidelity is confirmed by matrix-assisted laser desorption ionization time-of-flight (MALDI-TOF) and electrospray-ionization time-of-flight mass spectrometry (ESI-TOF-MS), and chain extension experiment. To demonstrate the potential of this approach, an original poly(N-vinylpyrrolidone)-b-poly(N-vinylformamide) (PVP-b-PNVF) diblock copolymer is synthesized and characterized by aqueous size-exclusion chromatography (SEC), asymmetric flow field-flow fractionation (A4F), and H diffusion-ordered spectroscopy nuclear magnetic resonance ( H DOSY NMR). Finally, selective hydrolysis of PNVF block to corresponding pH-responsive poly(N-vinylpyrrolidone)-b-poly(N-vinylformamide) (PVP-b-PVAm) is performed.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1002/marc.202200729 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!