CO2 switchable dual responsive polymers as draw solutes for forward osmosis desalination

2013 ◽  
Vol 49 (75) ◽  
pp. 8377 ◽  
Author(s):  
Yufeng Cai ◽  
Wenming Shen ◽  
Rong Wang ◽  
William B. Krantz ◽  
Anthony G. Fane ◽  
...  
Keyword(s):  
Forward Osmosis ◽  
Responsive Polymers ◽  
Dual Responsive

Steric hindrance effect on the thermo- and photo-responsive properties of pyrene-based polymers

2018 ◽  
Vol 42 (8) ◽  
pp. 5698-5708 ◽  
Author(s):  
Junqiu Liao ◽  
Shenglan Liu ◽  
Yongjie Yuan ◽  
Hailiang Zhang
Keyword(s):  
Steric Hindrance ◽  
Responsive Polymers ◽  
Dual Responsive ◽  
Type Phase ◽  
Phase Behaviors

We synthesized a novel series of pyrene-based thermo- and photo-dual responsive polymers named poly(pyren-1-yl-o(m,p)-vinylbenzoate) (P(Py-o(m,p)-VB)). And the influence of the steric hindrance effect on LCST-type phase behaviors and photocleavage properties has been studied.

Temperature and pH dual-responsive poly(vinyl lactam) copolymers functionalized with amine side groups via RAFT polymerization

2016 ◽  
Vol 7 (31) ◽  
pp. 5011-5022 ◽  
Author(s):  
Huan Peng ◽  
Wenjing Xu ◽  
Andrij Pich
Keyword(s):  
Raft Polymerization ◽  
Responsive Polymers ◽  
Dual Responsive ◽  
Alkaline Conditions

A series of statistical copolymers based on cyclic N-vinyl lactams and N-vinylformamide were synthesized via RAFT polymerization. Tempertaure/pH dual responsive polymers were obtained via hydrolysis the copolymers in alkaline conditions.

scholarly journals Polymer Having Dicationic Structure in Dumbbell Shape for Forward Osmosis Process

Polymers ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 571 ◽  
Author(s):  
Taehyung Kim ◽  
Changha Ju ◽  
Chanhyuk Park ◽  
Hyo Kang
Keyword(s):  
Aqueous Solutions ◽  
Pure Water ◽  
Water Flux ◽  
Forward Osmosis ◽  
Feed Solution ◽  
Solution Temperature ◽  
Solute Flux ◽  
Responsive Polymers ◽  
Draw Solution ◽  
Efficient Recovery

The thermal-responsive polymers, poly(alkane-1,#-diylbis(tri-n-butylphosphonium) 4-vinylbenzenesulfonate) (PSSBP#, # = 8, 6, and 4), where # is the number of carbon atoms in the central bridge structure of the dicationic phosphonium moiety, were synthesized to examine their potential application as draw solutes in forward osmosis (FO). The polymers exhibited low critical solution temperature (LCST) characteristics in aqueous solutions, which is essential for recovering a draw solute from pure water. The LCSTs of the 20 wt% aqueous solutions of PSSBP8, PSSBP6, and PSSBP4 were confirmed to be approximately 30, 38, and 26 °C, respectively, which is advantageous in terms of energy requirements for the recovering draw solute. When the concentration of the PSSBP4 draw solution was 20 wt%, water flux and reverse solute flux were approximately 1.61 LMH and 0.91 gMH, respectively, in the active layer facing the draw solution (AL-DS) system when the feed solution was distilled water. The PSSBP# thermal-responsive draw solute has considerable potential for use as a next-generation draw solute because of its excellent osmotic performance and efficient recovery. Therefore, this study provides inspiration for novel ideas regarding structural transformations of polymers and their applicability as draw solutes.

Synthesis of thermal and oxidation dual responsive polymers for reactive oxygen species (ROS)-triggered drug release

2015 ◽  
Vol 6 (5) ◽  
pp. 738-747 ◽  
Author(s):  
Chunsheng Xiao ◽  
Jianxun Ding ◽  
Lili Ma ◽  
Chenguang Yang ◽  
Xiuli Zhuang ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Drug Release ◽  
Main Chain ◽  
Reactive Oxygen ◽  
Oxygen Species ◽  
Responsive Polymers ◽  
Dual Responsive ◽  
Responsive Polymer ◽  
Triggered Drug Release

A PEG-based main chain thermo-responsive polymer with oxidation-triggerable thioether groups: synthesis, characterization and its use for ROS-responsive drug release.

Nitrogen Rich CO2-Responsive Polymers as Forward Osmosis Draw Solutes

2019 ◽  
Vol 58 (50) ◽  
pp. 22579-22586
Author(s):  
Sarah N. Ellis ◽  
Anna Riabtseva ◽  
Ryan R. Dykeman ◽  
Sam Hargreaves ◽  
Tobias Robert ◽  
...  
Keyword(s):  
Forward Osmosis ◽  
Responsive Polymers

scholarly journals Nanofibers for textile waste water management

2019 ◽  
Vol 14 (2) ◽  
pp. 297-310 ◽  
Author(s):  
Joginder singh Paneysar ◽  
Snehal Sawant ◽  
Meng Hei Ip ◽  
Sukhwinder kaur Bhullar ◽  
Stephen Barton ◽  
...  
Keyword(s):  
Textile Industry ◽  
Dye Removal ◽  
Dye Adsorption ◽  
Textile Wastewater ◽  
Wastewater Management ◽  
Freundlich Isotherms ◽  
Responsive Polymers ◽  
Dual Responsive ◽  
Ft Ir ◽  
Scavenging Efficiency

Abstract Currently, textile wastewater management focuses on dye removal efficiency and operating costs. Dual responsive polymers are choice materials because they can extract diverse organic compounds from water at their phase transition point. They are copolymers of the acrylamide class, and have been fully characterized by FT-IR, 1H-NMR, DSC, GPC and surface area analysis. Of the five dual responsive polymers, the copolymer of NIPAAM and DMAEMA (CoP-1) offers the best extraction of acidic and basic dyes from wastewater. All copolymers investigated can achieve better than 90% dye removal when used at 4 mg/ml concentration. This dye-scavenging efficiency increases to almost 99% at 3 mg/ml, on conversion of the copolymers to nanofibers in 300 to 500 nm size. Langmuir and Freundlich isotherms were constructed to study the mechanism of dye adsorption. The nanofibers have been shown to be reusable for removal of dyes from water, suggesting that such systems may add benefit to current dye removal methods from textile industry wastewater.

Oxidation and temperature dual responsive polymers based on phenylboronic acid and N-isopropylacrylamide motifs

2016 ◽  
Vol 7 (7) ◽  
pp. 1494-1504 ◽  
Author(s):  
Mei Zhang ◽  
Cheng-Cheng Song ◽  
Ran Ji ◽  
Zeng-Ying Qiao ◽  
Chao Yang ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Phenylboronic Acid ◽  
Responsive Polymers ◽  
Dual Responsive

Oxidation and temperature dual responsive copolymers using ROS as a target for drug delivery have been demonstrated.

Amino-functional polyethers: versatile, stimuli-responsive polymers

2020 ◽  
Vol 11 (24) ◽  
pp. 3940-3950 ◽  
Author(s):  
Patrick Verkoyen ◽  
Holger Frey
Keyword(s):  
Ring Opening ◽  
Review Article ◽  
Stimuli Responsive ◽  
New Class ◽  
Stimuli Responsive Polymers ◽  
Responsive Polymers

Amino-functional polyethers have emerged as a new class of “smart”, i.e. pH- and thermoresponsive materials. This review article summarizes the synthesis and applications of these materials, obtained from ring-opening of suitable epoxide monomers.

Smart Drug Release Systems Based on Stimuli-Responsive Polymers

2013 ◽  
Vol 13 (9) ◽  
pp. 1369-1380 ◽  
Author(s):  
Guangyan Qing ◽  
Minmin Li ◽  
Lijing Deng ◽  
Ziyu Lv ◽  
Peng Ding ◽  
...  
Keyword(s):  
Drug Release ◽  
Stimuli Responsive ◽  
Stimuli Responsive Polymers ◽  
Responsive Polymers ◽  
Smart Drug
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