Methacrylate and Styrene Block Copolymer Synthesis by Cu‐Mediated Chain Extension of Acrylate Macroinitiator in a Semi‐batch Reactor

2021 ◽  
pp. 2100043
Author(s):  
Morgan J. Cooze ◽  
Hayden M. Deacon ◽  
Katrina Phe ◽  
Robin A. Hutchinson
Keyword(s):  
Block Copolymer ◽  
Batch Reactor ◽  
Chain Extension

SAN-b-P4VP Block Copolymer Synthesis by Chain Extension from RAFT-Functional Poly(4-vinylpyridine) in Solution and in Emulsion

2007 ◽  
Vol 40 (20) ◽  
pp. 7132-7139 ◽  
Author(s):  
Jelena Božović-Vukić ◽  
Hector Tello Mañon ◽  
Jan Meuldijk ◽  
Cor Koning ◽  
Bert Klumperman
Keyword(s):  
Block Copolymer ◽  
Chain Extension

An efficient process for the Cu(0)-mediated synthesis and subsequent chain extension of poly(methyl acrylate) macroinitiator

2019 ◽  
Vol 4 (11) ◽  
pp. 2000-2010 ◽  
Author(s):  
Niloofar Shirali Zadeh ◽  
Morgan J. Cooze ◽  
Nathaniel R. Barr ◽  
Robin A. Hutchinson
Keyword(s):  
Block Copolymers ◽  
Efficient Method ◽  
Methyl Acrylate ◽  
Batch Reactor ◽  
Chain Extension ◽  
Efficient Process

A process combining a continuous tubular and a semi-batch reactor is established as an efficient method for the synthesis of block copolymers.

scholarly journals The Block Copolymer Shuffle in Size Exclusion Chromatography: The Intrinsic Problem with Using Elugrams to Determine Chain Extension Success

2021 ◽  
Author(s):  
Kai Philipps ◽  
Tanja Junkers ◽  
Jasper Michels
Keyword(s):  
Molecular Weight ◽  
Block Copolymer ◽  
Size Exclusion Chromatography ◽  
Size Exclusion ◽  
Chain Extension ◽  
Molecular Weight Determination ◽  
Macromolecular Synthesis ◽  
Exclusion Chromatography

Size exclusion chromatography (SEC) based on direct homopolymer calibration is the preferred method for molecular weight determination in macromolecular synthesis. However, using the same method and calibration in block copolymer...

scholarly journals Evaluation of Isoprene Chain Extension from PEO Macromolecular Chain Transfer Agents for the Preparation of Dual, Invertible Block Copolymer Nanoassemblies

2010 ◽  
Vol 43 (17) ◽  
pp. 7128-7138 ◽  
Author(s):  
Jeremy W. Bartels ◽  
Solène I. Cauët ◽  
Peter L. Billings ◽  
Lily Yun Lin ◽  
Jiahua Zhu ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Chain Transfer ◽  
Chain Extension ◽  
Macromolecular Chain ◽  
Transfer Agents

MACROSCOPIC " SINGLE CRYSTALS " OF AN S-B-S THREE BLOCK COPOLYMER

1971 ◽  
Vol 32 (C5) ◽  
pp. C5a-295-C5a-300
Author(s):  
A. KELLER ◽  
J. DLUGOSZ ◽  
M. J. FOLKES ◽  
E. PEDEMONTE ◽  
F. P. SCALISI ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Single Crystals

Photocatalytic degradation of methylene blue from aqueous solutions using nanopillars-TiO2 thin films: Batch reactor studies

2018 ◽  
Vol 18 (3) ◽  
pp. 81-91 ◽  
Author(s):  
C. Lalhriatpuia
Keyword(s):  
Thin Films ◽  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Organic Carbon ◽  
Photocatalytic Degradation ◽  
Batch Reactor ◽  
Tio2 Thin Films ◽  
Initial Concentration ◽  
Bet Specific Surface Area ◽  
Interfering Ions

Nanopillars-TiO2 thin films was obtained on a borosilicate glass substrate with (S1) and without (S2) polyethylene glycol as template. The photocatalytic behaviour of S1 and S2 thin films was assessed inthe degradation of methylene blue (MB) dye from aqueous solution under batch reactor operations. The thin films were characterized by the SEM, XRD, FTIR and AFM analytical methods. BET specific surface area and pore sizes were also obtained. The XRD data confirmed that the TiO2 particles are in its anatase mineral phase. The SEM and AFM images indicated the catalyst is composed with nanosized pillars of TiO2, evenly distributed on the surface of the substrate. The BET specific surface area and pore sizes of S1 and S2 catalyst were found to be 5.217 and 1.420 m2/g and 7.77 and 4.16 nm respectively. The photocatalytic degradation of MB was well studied at wide range of physico-chemical parameters. The effect of solution pH (pH 4.0 to 10.0) and MB initial concentration (1.0 to 10.0 mg/L) was extensively studied and the effect of several interfering ions, i.e., cadmium nitrate, copper sulfate, zinc chloride, sodium chloride, sodium nitrate, sodium nitrite, glycine, oxalic acid and EDTA in the photocatalytic degradation of MB was demonstrated. The maximum percent removal of MB was observed at pH 8.0 beyond which it started decreasing and a low initial concentration of the pollutant highly favoured the photocatalytic degradation using thin films and the presence of several interfering ions diminished the photocatalytic activity of thin films to some extent. The overall photocatalytic activity was in the order: S2 > S1 > UV. The photocatalytic degradation of MB was followed the pseudo-first-order rate kinetics. The mineralization of MB was studied with total organic carbon measurement using the TOC (total organic carbon) analysis.

Preparation of La-doped TiO$lt;inf$gt;2$lt;/inf$gt; Ultrafiltration Membrane by Templating of Block Copolymer

2015 ◽  
Vol 30 (2) ◽  
pp. 171 ◽  
Author(s):  
CHEN Tao-Tao ◽  
LI Dan ◽  
JING Wen-Heng ◽  
FAN Yi-Qun ◽  
XING Wei-Hong
Keyword(s):  
Block Copolymer ◽  
Ultrafiltration Membrane ◽  
La Doped

Urban pollution control strategy: SBR technology to treat agricultural waste from pig farm in Indonesia

2019 ◽  
Vol 2 (2) ◽  
pp. 21
Author(s):  
Lindawati Lindawati
Keyword(s):  
Cost Estimation ◽  
Batch Reactor ◽  
Agricultural Waste ◽  
Cost Effective ◽  
Land Application ◽  
Pig Manure ◽  
Small Scale ◽  
Piggery Wastewater ◽  
Pig Farm ◽  
Number Of Customers

Reduction of food rations and shortages is one of the impacts of the increasing human population. Food sector industries then try to cope with the fast growing number of customers. Agribusiness sector gains its popularity in these recent years, including pig farm. The increase trend of animal farming industry is likely to bring increasing pollution problem unless effective treatment methods are used. The main problems related to the pig farm include odor nuisance and pig manure disposal. The existing land application of piggery wastewater is the traditional way to discharge the wastewater. This may yield in land and water contamination, due to the accumulation of unused nutrients by crop plant. A case study of a large commercial pig farm from Australia is proposed to apply in smaller scale in Indonesia. Operational strategies for the small-scale SBR (Sequencing Batch Reactor) treating piggery effluent were developed based on lab-scale experiments. Due to SBR characteristics, which are money-saving and space-saving, it is very suitable to be applied in urban area. An economic evaluation was made of various process options. The cost estimation showed that SBR is a cost effective process, allowing operational batches to be adjusted to reduce unnecessary aeration cost. A reduction in the aeration cost was achieved by shortening the batch time from 24-h to 8-h. A comparison of three different SBR options showed that smaller size reactors could be more flexible and cost effective when compared with the larger ones.

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