Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of method for synthesizing sodium polystyrene sulfonate with ruthenium terpyridine initiator

A technology of sodium polystyrene sulfonate and ruthenium terpyridine, applied in the field of synthesizing sodium polystyrene sulfonate, synthesizing uniform molecular weight, and controllable PSS, which can solve the development limitation of photo-induced RAFT polymerization and the narrow wavelength range of photo-polymerization , low initiator initiation efficiency and other issues, to achieve the effect of good product quality, strong stability and high preparation efficiency

Inactive Publication Date: 2019-01-29
QINGDAO UNIV
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the development of photoinitiated RAFT polymerization has been limited due to the narrow wavelength range that can initiate photopolymerization, the low efficiency of initiators, and the environmental safety caused by the pollution of initiators to the environment.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of method for synthesizing sodium polystyrene sulfonate with ruthenium terpyridine initiator
  • A kind of method for synthesizing sodium polystyrene sulfonate with ruthenium terpyridine initiator
  • A kind of method for synthesizing sodium polystyrene sulfonate with ruthenium terpyridine initiator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1. Using ruthenium terpyridine as a photoinitiator to initiate RAFT polymerization to prepare polymer PSS:

[0029] (1) Put 40mg RAFT reagent (4-cyano-4-ethyltrithiovaleric acid, CETP), 4g sodium p-styrenesulfonate and 5mg ruthenium terpyridyl in a 50mL volumetric flask with 8mL water and 9mL di Oxycycline was dissolved to obtain a reagent for subsequent use;

[0030] (2) feed nitrogen into the volumetric flask equipped with reagent in step (1) to remove oxygen for 70 minutes;

[0031] (3) irradiating the volumetric flask after deoxygenation in step (2) for 24h under the blue light of 200W;

[0032] (4) dialyze the product obtained in step (3) in ultrapure water for 4 days, then put it into a vacuum box and dry it to obtain the polymer PSS;

[0033] 2. Pyrene functionalization of RAFT reagent (CETP):

[0034] (1) Dissolve 0.5g pyrenemethanol, 0.73g CETP, 0.6383g dicyclohexylcarbodiimide (DCC) and 0.0378g 4-dimethylaminopyridine (DMAP) in 10mL tetrahydrofuran (THF) re...

Embodiment 2

[0043] In this example, the synthesized PCETP and pyrene-functionalized PSS were characterized by NMR. figure 2 A is the NMR characterization of PECTP, figure 2 B is the NMR characterization of pyrene-functionalized PSS. Through the analysis of each peak position on the NMR spectrum, it is proved that the PCETP and pyrene functionalized PSS were successfully synthesized in this example.

Embodiment 3

[0045] The present embodiment has characterized the molecular weight, dispersity and conversion rate of PSS, as image 3 As shown in A, the reaction time increased, and the conversion rate of the pyrene functionalized polymer PSS was higher and higher, reaching 79% after 24 hours; as image 3 As shown in B, the difference between the molecular weight of the polymer measured by gel permeation chromatography (GPC) and the theoretical molecular weight is within 2%, and the molecular weight distribution of the pyrene-functionalized PSS is very narrow, less than 1.28.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the technical field of chemical synthesis and relates to a method for synthesizing PSS (poly(sodium-styrenesulfonate)) with uniform molecular weight and controllability by polymerization of reversible addition fragmentation chain transfer (RAFT) based on terpyridyl ruthenium serving as a photoinitiator. The method comprises: preparing PSS mainly from 4-cyano-4-ethyltrithiopentanoic acid, sodium p-styrenesulfonate and terpyridyl ruthenium, using pyrenemethanol, 4-cyano-4-ethyltrithiopentanoic acid (CETP), dicyclohexylcarbodiimide (DCC), 4-dimethylaminopyridine (DMAP) and tetrahydrofuran (THF) to prepare a functionalized RAFT reagent (4-cyano-4-ethyltrithiopentanoic acid CETP), and the using the functionalized RAFT reagent (4-cyano-4-ethyltrithiopentanoic acid CETP) to prepare PSS. The preparation process is simple, preparation efficiency is high, product quality is good, product stability is high, and a product is friendly to application environments.

Description

Technical field: [0001] The invention belongs to the technical field of chemical synthesis, and relates to a method for synthesizing polystyrene sodium sulfonate (PSS), in particular to a method based on ruthenium terpyridine as a photoinitiator, which is polymerized by reversible addition-fragmentation chain transfer (RAFT). A method for synthesizing PSS with uniform and controllable molecular weight under the irradiation of blue light at room temperature. Background technique: [0002] PSS is an excellent anionic polyelectrolyte, and PSS solution is a water-soluble polymer with unique functions, which is reused in various fields of industry, such as reactive emulsifiers, water-soluble polymers (coagulant , dispersant, container cleaning agent, cosmetics, etc.), water treatment agent (dispersant, flocculant), sulfur exchange resin (membrane), photo agent (membrane), semiconductor, image film, heat conduction products, etc. In the above-mentioned fields of application, vari...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08F112/14C08F2/48C08F2/38
CPCC08F112/14C08F2500/03C08F2/48C08F2/38
Inventor 刘敬权许元红陈涛
Owner QINGDAO UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com